Pandoc Changelog

What's new in Pandoc 3.1.13

Apr 7, 2024

Org reader:
Fix treatment of id property under heading (#9639).
DocBook reader:
Add empty title to admonition div if not present (#9569). This allows admonition elements (e.g. <note>) to work with gfm admonitions even if the <title> is not present.
DokuWiki reader:
Link text cannot contain formatting (e.g., // is not italics) (#9630).
An explicitly empty link text ([[url|]]) works the same as an omitted link text (#9632).
Typst reader:
Support Typst 0.11 table features: col/rowspans, table head and foot (#9588).
Parse cell col/rowspans.
CSLJson writer:
Put $ or $$ around math in csljson output (#9616).
ConTeXt writer:
Fix options order with externalfigure. The dimensions should come beforeafter the class if both are present.
Typst writer:
Put label after Span, not before. Labels get applied to preceding markup item.
Support Typst 0.11 table features (#9588): colspans, rowspans, cell alignment overrides, relative column widths, header and footer, multiple table bodies with intermediate headers. Row heads are not yet supported.
The default typst template has been modified so that tables don’t have lines by default. As is standard with pandoc, we only add a line under a header or over a footer. However, a different default stroke pattern can easily be added in a template.
More reliable escaping in inline [..] contexts (#9586). For example, we need to escape [1. April] or it will be treated as an ordered list.
Handle unnumbered on headings (#9585).
LaTeX writer:
Fix math inside strikeout (#9597).
Text.Pandoc.Writers.Shared:
Export isOrderedListMarker [API change].
Change lhs tests so they don’t use --standalone. This will avoid test failures due to minor changes in skylighting versions, e.g. #9589.
Use latest texmath, typst.
Require pandoc-lua-marshal 0.2.6 (#9613, Albert Krewinkel). Fixes an issue arising when the value of content properties on BlockQuote, Figure, and Div elements was an empty list.
Update lua-filters.md (#9611, Carlos Scheidegger).

New in Pandoc 3.1.12.3 (Mar 18, 2024)

Markdown reader: Fix bug with footnotes at end of fenced div (#9576).
LaTeX reader:
Improve tokenization of @ (#9555). Make tokenization sensitive to makeatletter/makeatother. Previously we just always treated @ as a letter. This led to bad results, e.g. with the sequence @. E.g., a@ b would parse as “ab” and a@b as “a”.
Make withRaw work inside parseFromToks (#9517). This is needed for raw environments to work inside table cells.
Better handling of table colwidths (#9579). Previously the parser just failed if the column width specified in p{} wasn’t a multiple of linewidth. This led to cases where content was skipped.
Typst writer:
Add ‘kind’ parameter to figures with tables (#9574).
Avoid unnecessary box around image in figure (#9236).
Omit width/height in images unless explicitly specified (#9236). Previously we computed width/heigth for images that didn’t have size information, because otherwise typst would expand the image to fit page width. This typst behavior has changed in 0.11. This change fixes a bug in which images would sometimes overflow page margins, depending on their intrinsic size.
Don’t add hard-coded inset to tables (#9580). Instead, set this globally in the default template, allowing it to be customized.
LaTeX template: Fix block headings support for unnumbered paragraphs (#9542, #6018, Oliver Fabel).
HTML templates: Replace polyfill provider (#9537, @SukkaW). Replace polyfill.io with cdnjs.cloudflare.com/polyfill. polyfill.io has been acquired by Funnull, and the service has become unstable.
Korean translations: delete colon in translation for ‘to’. This was invalid YAML, and not desired anyway, since a colon is added.
Use latest commonmark, commonmark-extensions. This fixes a 3.12 regression in parsing of commonmark/gfm autolinks (jgm/commonmark-hs#151).
Depend on djot 0.1.1.3, which fixes a serious parsing bug affecting regular paragraphs after lists.
Depend on latest skylighting, skylighting-core, typst-hs, texmath.
MANUAL.txt: Change broken link to IDML cookbook (#9563).

New in Pandoc 3.1.12.2 (Mar 1, 2024)

Docx reader:
Ensure that table captions are counted (#9518).
Detect caption by style name not id (#9518). The styleId can change depending on the localization.
Avoid emitting empty paragraph where caption was.
Markdown reader: fix regression in link parsing with wikilinks extensions (#9481). This fixes a regression introduced in 3.1.12.
Org reader/writer: support admonitions (#9475).
Org writer: omit extra blank line at end of quote block.
Typst writer: ensure that -, +, etc. are escaped at beginning of block (#9478). Our recent relaxing of escaping (#9386) caused problems for things like emphasized - characters that were rendered using #strong[-]#. This now gets rendered as #strong[-].
LaTeX writer: fix bug when a language is specified in two different ways (#9472). If you used lang: de-DE but then had a span or div with lang=de, the preamble would try to load ngerman twice, leading to an error. This fix ensures that a language is only loaded once.
Docx writer: Don’t copy over footnotePr in settings.xml from reference.docx (#9522).
EPUB writer: omit EPUB2-specific meta tag on EPUB3 (#9493). This caused a validation failure in epubs with cover images.
Lua: avoid crashing when an error message is not valid UTF-8 (Albert Krewinkel).
Text.Pandoc.SelfContained:
Add role="img" to svgs.
Add aria-label to svg elements with alt text if present. Screen readers ignore alt attributes on svg elements but do pay attention to aria-label (#9525).
Text.Pandoc.Shared: Fix regression in section numbering in makeSections (#9516). Starting with pandoc 3.1.12, unnumbered sections incremented the section number.
Text.Pandoc.Class: fix openUrl TLS negotiation (#9483). With the release of TLS 2.0.0, the TLS library started requiring Extended Main Secret for the TLS handshake. This caused problems connecting to zotero’s server and others that do not support TLS 1.3. This commit relaxes this requirement.
Depend on djot 0.1.1.0 (fixes rendering on multiline block attributes).
Use new releases of skylighting-format-blaze-html (#9520). Fixes auto-wrapping of long source lines in HTML print media.
Use new commonmark-extensions (fixes issue with the rebase_relative_paths extension when used with commonmark/gfm.
Makefile: improve epub-validation target (#9493). Use --epub-cover-image to catch issues that only arise with that.

New in Pandoc 3.1.12.1 (Feb 18, 2024)

New in Pandoc 3.1.12 (Feb 15, 2024)

Add djot as input and output format. Djot is a light markup syntax (https://djot.net).
New module Text.Pandoc.Readers.Djot [API change]. The function readDjot is also exported by Text.Pandoc.Readers.
New module Text.Pandoc.Writers.Djot [API change]. The function writeDjot is also exported by Text.Pandoc.Writers.
--number-sections now uses the first digit for the number of the top-level section, no matter what its level. So if the top-level section is level-2, numbers will be 1, 2, etc. rather than 0.1, 0.2, as in the past (#5071). For some backwards compatibility, we revert to the old behavior when the --number-offset option is used.
DocBook reader:
Better handling of <procedure> and <substeps> (#9341): <procedure> now gets parsed as an ordered list, and <substeps> as a sublist.
Man reader:
Move spaces outside of emph/strong (#9445).
MediaWiki reader:
Don’t make leading blanks underscores in image links (#9425).
Allow lowercase image: (#9424).
BibTeX reader:
Support pagetotal in converting BibLaTeX.
Markdown reader:
Fix wikilinks extensions to allow newlines in titles (#9454).
EPUB reader:
Don’t put # characters in identifiers.
LaTeX reader:
Improve treatment of cref, Cref (#7463). Use the reference-type ref+label and ref+Label. Also, associate with vref ref instead of ref+page.
Limited support for Cref (#7463).
Generate relative widths for linewidth, textheight (#9388).
Typst reader:
Fix handling of overline (#9294). Due to a typo, it was being incorrectly rendered as an underset.
Improve handling of inline #quote (#9413).
Fix handling of dot(), tilde(), ddot() (jgm/typst-hs#38).
Fix character used for norm (jgm/typst-hs#38).
Typst writer:
Use reference form (e.g. @jones2000[p. 30]) for citations when possible.
Use #ref or @ for links with reference-type="ref" (#7463). This attribute is added to LaTeX cref, for example.
Improve citation support (#9452). Emit form: "prose" or form: "year" qualifiers if the citation is author-in-text or suppress-author. Strip initial comma from suffix, since typst will add an extra one.
Unescape URI escapes in image paths (#9389).
Handle labels and citaiton ids with spaces and other special characters (#9387). In these cases, we produce an explicit label() rather than using <> or @.
Avoid producing illegal labels (#9387).
Avoid unnecessary escapes (#9386).
LaTeX writer:
Make writer sensitive to empty_paragraphs extension (#9443).
Fix beamer highlighting (mh4ckt3mh4ckt1c4s).
Create valid table even when table is empty (#9350).
Set font fallback for babel main font (Max Heller).
Add some kerns where needed between quotes (#9371).
HTML writer:
Add suffix to multiple footnote section ids, so they are unique (Sam May). This is necessary when --reference-location is block or section.
EPUB writer:
Add ARA roles for accessibility (#9378, Iacobus1983). Footnote references are given role “doc-noteref”, footnote text gets “doc-footnote”, and nav gets “doc-toc”.
Ensure that an alt attribute is always added (#9354). This seems to be required by iBooks; even an empty alt attribute will satisfy it.
Add xml:lang to package element (#9372).
Add accessibility metadata to EPUB metadata (#9372, #9400, Iacobus1983 and John MacFarlane). Reasonable default values are used to ensure that pandoc’s EPUBs conform to the EU Accessibilty Act requirements, but values can be overridden using metadata.
Docx writer:
Restore ability to center-justify table (#9393). The fix to #5947 caused all tables to be left indented. This was necessary to avoid extra indentation in table cells when a table appeared in a list item. This change makes the changes conditional, so that they only affect tables in list items.
Man writer:
Fix bug with long URLs (#9458). URLs with more than 68 characters didn’t display properly because of wrapping.
Support (limited) syntax highlighting in code blocks (#9446). Currently only boldface and italics are supported. The monochrome style might be of use for those generating man pages.
Org writer:
Escape special lines in code blocks (#9218, Albert Krewinkel).
Markdown writer:
Use different width fences for nested divs (#9450). Outer divs have longer fences. This aids clarity for the reader, making it easier to see where the div ends. It also makes the output compatible with some other implementations, e.g. micromark, which require different-width fences for nesting.
Fix output for pipe tables with a huge number of columns (#9346). Previously we got invalid pipe tables when the number of table columns exceeded the setting of --columns.
Powerpoint writer:
Fix regression in layout for slides with figures (#9442).
Use internal column widths in pptx writer tables (#5706, Tomas Dahlqvist). The table writer used to only divide all available width evenly for all columns. In this update the code uses the incoming widths if they are available. If they are not set the earlier even distribution is used. Some of the golden templates are adjusted slightly because of different rounding when using the new calculation model.
Custom writers:
Fix handling of common state (#9229, Albert Krewinkel). The CommonState (PANDOC_STATE in Lua) may change between the time that a custom writer script is first loaded and when the writer is run. However, the writer was always using the initial state, which led to problems, e.g. when the mediabag was updated in a filter, as those updates where not visible to the writer. The state is now updated right before the writer function runs.
Text.Pandoc.SelfContained:
Fix id replacements in SVGs with clipping paths (#9420). This fixes --embed-resources when SVGs have clip-path attributes.
Fix size of duplicated SVGs with --embed-resources (#9439).
ConTeXt template: support font fallback (#9361, Lawrence Chonavel).
Text.Pandoc.Shared:
addPandocAttributes: use wrapper attribute, not wrap, for Divs and Spans added as wrappers to hold attributes on elements that do not accept them.
makeSections behavior changes:
When the optional base level parameter is provided, we no longer ensure that the sequence of heading levels is gapless (#9398). Instead, we set the lowest heading level to the specified base level, and adjust the others accordingly. If an author wants to skip a level, e.g. from level 1 to level 3, they can do that. In general, the heading levels specified in the source document are preserved; makeSections only puts them into a hierarchical structure.
Section numbers are now assigned differently, as described above under --number-sections changes (#5071).
Improve makeSections code for section number calculation.
Text.Pandoc.Chunks:
Autogenerate unique ids for sections missing them (#9383). This is needed for TOC generation to work properly. We can’t create TOC links if there are no ids. This fixes some EPUB validation issues we’ve been getting since switching over to Chunks for chunking.
Improve fixTOCTreePaths. We weren’t adding ids for section headings that don’t head a chunk, but these headings are needed for a TOC.
Lua: catch encoding error in pandoc.read (#9385, Albert Krewinkel). Fixed a bug that could lead to an un-catchable error and program termination when pandoc.read was called with invalid UTF-8 input.
LaTeX template: support font fallback (lawcho). This support is LuaLaTeX-specific. See MANUAL.txt for documentation.
Text.Pandoc.Readers: Add readMan to exports [API change] (George Stagg).
Text.Pandoc.PDF:
Reliably detect when TOC has changed (#9295). Sometimes the TOC changes but there are no warnings: this happens when no labels are present. In this case we must rerun LaTeX. So we now take the SHA1 hash of the TOC file and rerun LaTeX if it changes between runs.
Increase maximum number of LaTeX runs to 4 (#9299). On some documents, 4 runs are needed (e.g. when a LastPage reference is used).
Avoid readFileLazy, which caused improperly cleaned-up temp directories on Windows (#9460).
MANUAL.txt:
Harmonize spelling of Markdown and MultiMarkdown (#9402, Salim B).
Add <pre> to list of exceptions for markdown_in_html_blocks extension (#9305).
Add clarification to docs for --resource-path (#9417).
Makefile: Validate generated EPUB as part of prerelease checks.
Add validation for docx golden files to CI (Edwin Török).

New in Pandoc 3.1.11.1 (Jan 6, 2024)

Docx reader:
Fix HYPERLINK with only switch and no argument (#9246).
Org reader:
Parse caption and label for grid tables (#9279).
MediaWiki reader:
Handle multiline math in list items (#9293).
OPML writer:
Respect --wrap options & --columns in contents of notes (#9297).
ODT/OpenDocument writers:
Properly handle highlighting styles (#9287). These styles were going into an office:styles element in content.xml, but this is invalid. Instead they must go in styles.xml. The variable highlighting-styles no longer has any effect on the default opendocument template, and highlighting styles are not included in opendocument output.
Markdown writer:
Add table identifier at end of caption if present (#9279).
Text.Pandoc.PDF:
Expand list of environment variables to display in verbose output (#9303).
Ensure that we find all the LaTeX warnings requiring a rerun (#9284). This should fix a regression from 3.1.9 that led to incorrect alignments in tables (and possibly other issues).
Docx writer:
Ensure that pandoc’s output validates (Edwin Török, #9273, #9269, John MacFarlane, #9265, #9266, #9264).
Don’t emit empty table rows, which seem to cause problems for Word (#9224).
LaTeX writer:
Omit superfluous page locator label when used with --natbib or --biblatex (#9275). These will treat a bare number as a page locator, and they will be able to localize it. Note that the recognition of the locator label is locale-sensitive; if lang is de, then S. 33 is a page reference, and p. 33 is not!
Text.Pandoc.Chunks: Fine tune makeChunks (#9281).
Ensure that chunks not based on sections (those with the “preamble” class) get unique identifiers, by appending chunk number.
This will also ensure that they get unique path names when the path is generated from the identifier.
Default HTML5 template: remove html5shiv (and support for IE < 9).
Makefile:
Fix make quick-stack: j was expecting a number (Edwin Török).
Run built pandoc (instead of pandoc in path).
Add validate-epub target, using epubcheck to test the golden files.
Add validate-docx-golden-tests target.

New in Pandoc 3.1.11 (Dec 16, 2023)

New in Pandoc 3.1.10 (Dec 13, 2023)

Link pandoc-cli version to pandoc version. Henceforth pandoc-cli’s version will be synchronized with pandoc’s, and pandoc-cli will depend on an exact pandoc version. This will avoid confusion by ensuring that cabal install pandoc-cli-X.Y.Z installs pandoc version X.Y.Z. It will make things more straightforward for upstream packagers (see #9232). This scheme does not follow the Haskell PVP, but that should cause no harm, because this package does not expose a library.
Add alerts markdown extension. This enables GitHub style markdown alerts as a commonmark extension. This extension is now default for gfm. It can’t be used with markdown, only with commonmark and variants.
Markdown reader:
Preserve newlines in math instead of changing to spaces. Otherwise we can get unwanted results if there’s a % comment (#9193).
Make attributes work with reference links (#9171).
HTML reader:
Improve handling of invalidly nested sublists (#9187, cf. #8150).
MediaWiki reader:
Allow attribute keys with hyphens (#9178).
ODT reader:
Support attr text:continue-numbering (#8979, Stephan Meijer).
Typst reader:
Allow references (e.g. @foo) to become citations if there is no corresponding label in the document.
Collapse adjacent cite elements.
Handle supplements in cite.
Change cite (only one key allowed, a label) (typst 0.9 breaking change).
Support quote element (typst 0.9).
LaTeX reader:
Handle otherlanguage environment and language-name environments like begin{french}...end{french} (#9202).
Fix theorem label parsing (#8872, Hikaru Ibayashi).
Docx reader:
Unwrap content of shaped textboxes (Stephan Meijer, #9214).
Improve handling of w:sym (#9220). We now look up symbols in symbol fonts using the table defined at Text.Pandoc.Readers.Docx.Symbols.
Add unexported module Text.Pandoc.Readers.Docx.Symbols. This gives us a table to use to resolve characters included in docx via w:sym element.
Man reader:
Properly handle .sp macro inside lists and block quotes (#9201).
LaTeX writer:
Fix bug with big footnotes inside emphasis (#8982, Hikaru Ibayashi).
Handle identifiers inside heading contents. phantomsection can’t be used in this case, so we need hypertarget (#9209).
LaTeX template:
Include bookmark package unconditionally. This package produces better PDF bookmarks than hyperref and does it on the first pass.
Typst writer:
Use quote for block quotes.
Support --toc-depth as in other writers (#9242).
Put inline image dimensions on enclosing box, not image (#9104).
Better handling of tables with captions (#9194). We now put these in a figure with a caption argument.
Update typst writer to typst 0.9 citation format (#9188).
Typst template:
Remove custom definition of blockquote in default template. (We now use built-in quote.)
Support table of contents.
Support csl (#9186, Ian Max Andolina). Typst now supports CSL for its native citation engine, so pandoc should use a specified csl style in the template, falling back to bibliographystyle if csl is not specified.
Docx writer:
Use different style for block quotes in notes (#9243). Using “Footnote Block Text” for the style name, so it can be given a different font size if footnotes are.
Allow embedded fonts to be used in reference.docx (#6728).
HTML5 writer:
To conform to validator’s expectations, doc-footnote role is used with aside and doc-endnotes with section.
aside is used only for notes at ends of sections or blocks; if all the notes come at the end of the document, section is used so we can have the doc-endnotes role.
JATS writer:
Handle case where there is material after refs div (#9166). Previously in such cases the references were not being moved to back matter.
Ms writer:
Don’t do normal escapes in filename arguments for PSPIC etc.
T.P.RoffChar: escape - as -. The groff_man (7) man page indicates that - characters will be treated as typographic hyphens and are not appropriate for cases where the output should be copy-pasteable as an ASCII hyphen-minus character. (E.g. in command line options.) However, until a recent update groff man did not actually do this; it treated - and - the same. With the new update (1.23.0) the two are distinguished (see https://lwn.net/Articles/947941/ for background), so now it is important that pandoc escape -.
Text.Pandoc.Extension: add Ext_alerts constructor [API change].
Text.Pandoc.PDF: We now default to running LaTeX only once in producing a PDF (instead of twice). This is made possible by the shift to the bookmark package, which does not require a second pass for PDF bookmarks. If a table of contents is present, we still have to run three times to get the page numbers, and if beamer is used we still do a minimum of two runs.
Text.Pandoc.Shared:
renderTags': use minimized tag for rect.
Allow svg path element to be minimized.
Export combineAttr [API change].
Improve isTightList so that it recognizes an item containing only a list which is itself tight as potentially an item in a tight list (#9161).
Text.Pandoc.MIME: Ensure we use .svg not .svgz as extension for image/svg+xml mime type. This fixes issues with embedded SVG images in docx output, among other things (#9195).
Text.Pandoc.Class: openURL improvements for data uris. Only treat data URI as base64 if ‘;base64’ is specified. Otherwise treat as UTF-8 (not 100% reliable but should cover most other cases). Strip off ;base64 (or ;charset=... or whatever) from mime type (#9195).
Text.Pandoc.SelfContained: Improve treatment of embedded SVGs (#9206, #8948).
Ensure unique ids for elements by prefixing SVG id.
Ensure SVG id attribute except when use element is used.
Remove width, height attributes from svg element when use element is used. Instead, add width and height 100% to the use element. This seems to get the sizing right.
Text.Pandoc.Citeproc: Don’t link citations if suppress-bibliography specified, for there will be nothing to link to (#9163).
epub.css: add styling for sup and sub (#9160).
Switch from base64 to base64-bytestring (#9233).
Use newest versions of commonmark, commonmark-extensions, commonmark-pandoc, texmath, typst, skylighting, skylighting-core.
Benchmark: use standalone documents for reader tests. Otherwise typst reader benchmark fails. Note: this means that we are now parsing longer documents, so bench results on readers won’t be comparable to before.
MANUAL.txt: update defaults file docs for bibliography fields (#9173). Recommend using top-level bibliography csl, etc. instead of a nested metadata field. Reason: ${USERDATA} and ${HOME} are only expanded in these contexts, not in metadata.
Move man pages to pandoc-cli package (#9245).

New in Pandoc 3.1.9 (Oct 28, 2023)

Make reference-section-title work with jats+element_citations (#9021).
Add bits as synonym of jats as input format.
JATS reader:
Modify JATS reader to handle BITS too (#9138, Julia Diaz). Add provision for title-group, book, book-part-wrapper, book-meta, book-part-meta, book-title, book-title-group, index, toc, legend, title, collection-meta
Fix handling of alt-text (#9130, Julia Diaz). Previously we were looking for an attribute that doesn’t exist in JATS; alt-text is provided by a child element.
CommonMark reader:
Handle Ext_tex_math_gfm (#9121). Parse GFM-specific math constructions when tex_math_gfm enabled.
DokuWiki reader:
Allow autolinks to be avoided using e.g. https:%%//%%... (#9153).
Parse <code> and <file> as block-level code (#9154). Previously we treated them as inline code in some contexts, but that is not how DokuWiki works.
LaTeX reader:
Better handle spacing commands hfill, vfill, hskip, vskip, etc. (#9150).
Fix incorrect abbreviation for astronomical unit (#9125, Michael McClurg).
Markdown reader:
Fix blindspot with superscript in links (#8981). Previously [^super^](#ref) wasn’t parsed as a link, due to code that was meant to prevent footnote markers from being recognized as reference links. This commit tightens up that code to avoid this bad effect. We have also added a new restriction on footnote labels: they cannot contain the characters ^, [, or ]. Though this is technically a breaking change, we suspect that the impact will be minimal, as it’s very unlikely people would be using these characters in their note labels.
Don’t apply --default-image-extension to data URIs (#9118).
More accurate check that a normalCite is not a link, bracketed span, or reference (#9080).
HTML reader:
Allow th to close td and vice versa (#9090).
Parse task lists using input elements (#9047, Seth Speaks).
Creole reader:
Handle empty cells correctly (#9141, Sascha Wilde).
Org writer:
Escape literal *, |, # at beginning of line with ZWS (#9159).
ICML writer:
Prevent doubled attributes (#9158).
Powerpoint writer:
Fix a corruption error caused when the document used both a regular png and a png in a data URI (#9113). (Similarly for any other image format.) The problem was that duplicate entries in [Content Types].xml were being created, one for the mime type image/png, one for image/png;base64.
LaTeX writer:
Fix rowspans in tables so they use the width of the column (= as the width parameter) (#9140).
Don’t treat table as “simple” if they have col widths. This should help fix a problem wherein some grid tables with colspans were overly wide (#9140).
Fix uneven indents in line block output (#9088).
JATS writer: fix 3.1.4 regression in handling block-level metadata (#9092).
Ms writer: improvements in image handling (#4475).
PDFPIC is now used for PDF images in figures.
Inline images that are postscript or PDF are rendered using PSPIC or PDFPIC. This isn’t ideal, because they will still be rendered as if in a separate paragraph, but it’s probably better than just printing the image name.
Units are included in height.
HTML writer:
If raw format is an HTML side deck format, emit it (James J Balamuta).
Typst writer:
Add #box around image to make it inline. (#9104) An #image by itself in typst is a block-level element. To force images to be inline (as they are in pandoc), we need to add a box with an explicit width. When a width is not given in image attributes, we compute one from the image itself, when possible.
Don’t allow long heading to wrap (#9132).
Escape ( (#9137). If unescaped ( occurs in certain contexts, it can be parsed as function application.
Man writer:
Fix some spacing issues around links (#9120). We need to use c before a .UR or .MT, to avoid an extra space, and also after. To ensure that a space at the beginning of the following line doesn’t get swallowed up, we escape it with .
Use UR, MT macros for URLs, emails (#9120).
Text.Pandoc.Extensions:
Add Ext_tex_math_gfm constructor to Extension (#9121). [API change]. This handles two GitHub-specific syntaxes for math. This is now default for gfm, in addition to tex_math_dollars.
Remove duplicates for Ext_raw_html and Ext_pipe_tables in some of the lists (Tim Stewart).
Text.Pandoc.Metadata: Add helpful message on some metadata YAML errors (#9155).
Text.Pandoc.Shared:
splitSentences: don’t split after initials. This improves the man and ms writer output, preventing sentence breaks after initials.
Add addPandocAttributes function [API change]. This is meant to simplify addition of attributes to Pandoc elements: for elements that don’t have a slot for attributes, an enclosing Div or Span is added to hold the attributes.
MANUAL.txt:
Clarify that formatting can’t cross line boundaries in line blocks (#9119).
Fix legacy option for citation (#8737, 3w36zj6)
Update et translations (priiduonu).
Updated no translations (Stephan Daus). Renamed no.yaml (macrolanguage Norwegian) to nb.yaml (Norwegian Bokmål). Created soft symbolic link from no.yaml pointing to nb.yaml.
Lua subsystem: Use the newest LPeg version (lpeg-1.1.*) (#9107, Albert Krewinkel).
Default epub.css: Apply style to h6, format styles, and combine identical styles under shared selectors (samuel-weinhardt).
Update nix flake with dependencies (piq9117).
LaTeX template: fix CSLBlock vertical space (John Purnell).
Allow tasty 1.5 and Diff 0.5.
Require commonmark-extensions 0.2.4, commonmark 0.2.4.
Require texmath 0.12.8.4. This should improve math in powerpoint, fixing empty boxes around roots in some cases.
Require typst 0.3.2.1

New in Pandoc 3.1.8 (Sep 9, 2023)

New in Pandoc 3.1.7 (Aug 31, 2023)

Org reader:
Don’t parse alphabetical lists unless the fancy_lists extension is enabled (#9042).
Allow escaping commas in macro arguments (Amneesh Singh).
JATS reader:
Support for <permissions> metadata (#9037, Julia Diaz). metadata objects with multiple fields are created, matching the structure in JATS.
Correct name of JATS element attrib.
Markdown reader:
Support images with wikilink syntax, e.g. ![[foo|bar]], when one of the wikilinks extension is enabled (#8853).
Allow a citation or reference link to be parsed after a ! (#8254).
Fix dropped ! before nonexistent reference (#9038).
LaTeX writer:
Fix regression in escaping URLs (#9043).
Use cite and bibitem to link up citations, even with citeproc. (#9031). This will give us better accessibility; when tagging is enabled, the citation can be linked to the bibliography entry. This changes some of the details of the layout and the default template. We now make CSLReferences a special enumitem list that will contain bibitems. Internal links inside citations to ids beginning in ref- are creating using cite instead of hyperref.
Use phantomsection and label instead of hypertarget (#9022).
Use hyperref for LaTeX internal links, hyperlink for beamer (since hyperref doesn’t seem to work) (#9022).
Backslash-escape % and # in URLs (#9014).
JATS writer:
Fix placement of ref-list when no title is specified for the reference section (#9017). (In this case we place it in back with an empty title.)
Man writer:
Avoid a .PP right after a section heading (#9020). This is at best a no-op (in groff man and mandoc) and at worst (in some formatters) may create extra whitespace.
We revert the fanciness introduced in #7506, which employs a custom font name V and a macro that makes this act like boldface in a terminal and monospace in other formats. Unfortunately, this code uses a mechanism that is not portable (and does not work in mandoc) (#9020).
Instead of using V for inline code, we simply use CR. Note that f[CR] is emitted instead of plain f[C], because there is no C font in man. (This produces warnings in recent versions of groff, #9020.)
For code blocks, we now use the .EX and .EE macros, together with .IP for spacing and indentation. This gives more standard code that can be better interpreted e.g. by mandoc (#9020).
Man template: don’t emit .hy, regardless of setting of hyphenate variable (#9020).
LaTeX template: special redefinition of st for CJK (#9019). soul’s version raises on error on CJK text.
Use latest skylighting-format-blaze-html (#7248). This works around a longstanding iOS Safari bug that caused long lines to be displayed in a different font size in highlighted code.
Allow skylighting 0.14 (and require it in pandoc core).
Allow text 2.1.

New in Pandoc 3.1.6.2 (Aug 23, 2023)

New in Pandoc 3.1.6.1 (Aug 7, 2023)

New in Pandoc 3.1.6 (Jul 21, 2023)

Fix new variant of the vulnerability in CVE-2023-35936. Guilhem Moulin noticed that the fix to CVE-2023-35936 was incomplete. An attacker could get around it by double-encoding the malicious extension to create or override arbitrary files.
--embed-resources: Use inline SVG instead of data uris for SVG images in HTML5 (#8948). Note that SelfContained does not have access to the writer name, so we check for HTML5 by determining whether the document starts with <DOCTYPE! html>. This means that inline SVG won’t be used when generating document fragments.
Fix regression on short boolean arguments (#8956). In 3.1.5 boolean arguments were allowed an optional argument (true|false). This created a regression for uses of fused short arguments, e.g. -somyfile.html, which was equivalent to -s -omyfile.html, but now raised an error because pandoc attempted to parse o as a boolean true or false. This change allows the fused short arguments to be used again. Note that -strue will be interpreted as -s with an argument true, not as -s -t -rue. It is best to use long option names with the optional boolean values, to avoid confusion.
Make --epub-title-page’s argument optional. It takes a boolean argument, and now that all of our boolean flags take such an argument, we can make this one optional for consistency.
Improve errors for illegal output formats. Previously if you did pandoc -s -t bbb, it would give you an error about the missing bbb template instead of saying that bbb is not a supported output format.
Improve errors for incorrect command-line option values (#8879). Always give the name of the relevant argument.
Fix typo on error message for incorrect --preserve-tabs argument. Thanks @fsoedjede
Docx reader: use SVG version of image if present (#7244). Previously the backup PNG was exported even if an SVG was present, but the SVG should be preferred.
Typst reader: fix regression in recognition of display math (#8949). The last release caused all math to be parsed as inline math.
JATS writer: don’t use <code> for inline code (#8889). It is intended for block-level code.
HTML writer: don’t make line blocks sensitive to --wrap (#8952).
RST writer: fix figure handling (#8930, #8871). This fixes a number of regressions from pandoc 2.x. Properly handle caption, alt attribute in figures. No longer treat a paragraph with a single image in it as a figure (we have a dedicated Figure element now).
Docx writer: Copy “mirror margins” property from reference.docx (#8946).
Text.Pandoc.UTF8: Deprecate decodeArg which is now a no-op. This was needed for old base versions which we no longer support.
Use released skylighting, typst.
Allow latest commonmark-extensions. This allows entities in wikilinks.
Switch back to using ghc 9.2 for linux and Windows binary releases (#8947, #8955). With ghc 9.4+, we were getting AVX instructions in the amd64 binary, which aren’t supported on older hardware. For maximum compatibility we switch back to ghc 9.2, which doesn’t cause the problem. (As documented, ghc should not be emiting these instructions, so we aren’t clear on the diagnosis, but the cure has been tested.)
Change Windows release build to use cabal instead of stack.

New in Pandoc 3.1.5 (Jul 7, 2023)

Allow all boolean flags to take an optional true or false value (#8788, Sam S. Almahri). The default is true if no value is specified, so this is fully backwards-compatible.
Support --id-prefix for markdown output (#8878)
Markdown reader:
Add strictness annotations to fix a memory leak (#8762).
Typst reader:
Use typst-hs 0.3.0.0, which is more robust, fixes many bugs, and targets typst 0.6.
Package loading is now supported, as long as the package has been cached or is local.
Rewrite Typst reader in a way that makes it easier to extend.
Filter out CR in raw.
Handle block content for link element.
Handle block-level content in text element.
Handle style, align, place in inline contexts too.
Improve info message for skipped elements.
Add typst reader tests (#8942).
MediaWiki reader:
Revise treatment of “link trail.” Previously we only included ASCII letters. That is correct for English but not for, e.g., Spanish (see comment in #8525). A safer approach is to include all letters except those in the CJK unified ideograph ranges.
AsciiDoc writer:
Make modern AsciiDoc the target for asciidoc (#8936). The AsciiDoc community now regards the dialect parsed by asciidoctor as the official AsciiDoc syntax, so it should be the target of our asciidoc format. The asciidoc output format now behaves like asciidoctor used to. asciidoctor is a deprecated synonynm. For the old asciidoc behavior (targeting the Python script), use asciidoc_legacy. The templates have been consolidated. Instead of separate default.asciidoctor and default.asciidoc templates, there is just default.asciidoc.
Text.Pandoc.Writers.AsciiDoc API changes:
writeAsciiDoc now behaves like writeAsciiDoctor used to.
writeAsciiDoctor is now a deprecated synonym for writeAsciiDoc.
New exported function writeAsciiDocLegacy behaves like writeAsciDoc used to.
Update line-through for asciidoc writer to custom inline style (#8933, Kevin Broch).
Typst writer:
Support unlisted class in headings (#8941).
Consolidate bibliography files into one #bibliography command (#8937).
Improve handling of autolinks (#8931).
Docx writer:
Make relative widths work in tables. This didn’t work before because we were missing an attribute that tells Word to used fixed widths rather than computing optimal ones.
DokuWiki writer: fix lists with Div elements (#8920). The DokuWiki writer doesn’t render Divs specially, so their presence in a list (e.g. because of custom-styles) need not prevent a regular DokuWiki list from being used. (Falling back to raw HTML in this case is pointless because no new information is given.)
LaTeX writer:
Fix babel name for fa (should be persian).
Prevent babel language from being imported twice (#8925).
Text.Pandoc.Class:
Add toTextM [API change]. This is like Text.Pandoc.UTF8.toText, except:
it takes a file path as first argument, in addition to bytestring contents
it raises an informative error with source position if the contents are not UTF8-encoded
This replaces utf8ToText whenever we have the filename and are in a PandocMonad instance. This will lead to more informative error messages for UTF8-encoding, indicating the file path and byte offset where the error occurs (#8884).
Remove invalid term “Subject” from Turkish translations (#8921).
stack.yaml: add pkg-config to nix packages (#8927, pacien).
Allow aeson 2.2.
MANUAL: Add clarification on –section-divs. Closes #8882.

New in Pandoc 3.1.4 (Jun 24, 2023)

Fix a security vulnerability in MediaBag and T.P.Class.IO.writeMedia. This vulnerability, discovered by Entroy C, allows users to write arbitrary files to any location by feeding pandoc a specially crafted URL in an image element. The vulnerability is serious for anyone using pandoc to process untrusted input. The vulnerability does not affect pandoc when run with the --sandbox flag.
Allow epub-title-page to be used in defaults files (#8908).
Issue Extracting info message (in --verbose mode) when using --extract-media or extracting media temporarily in PDF production.
HTML reader: Update TableBody RowHeadColumns caculation (#8634, Ruqi). This change sets RowHeadColumns to the minimum value of each row, which gives better results in cases where rows have different numbers of leading th tags.
Dokuwiki reader: retain image query parameters as attributes (#8887, echo0).
Textile reader: Add support for link references (#8706, Stephen Altamirano). Textile supports what it calls “link alias”, which are analogous to Markdown’s reference-style links.
LaTeX reader: support alt text on images (#8743, Albert Krewinkel).
Commonmark reader: Make implicit_figures work again. Support for this (introduced in #6350) disappeared when we made an architectural change.
JATS reader:
Add footer and multiple body parsing to table reader (#8765, Noah Malmed).
Parse references title from ref-list (#8365).
JATS writer:
Make --number-sections work.
Include title in ref-list (#8364). Previously the reference title ended up in a separate section at the back of the body instead of in the ref-list in the back matter.
Mediawiki writer: allow highlighting to work for F# language (Adelar da Silva Queiróz).
LaTeX writer: Fix escaping of & in href and url (#8903).
Docx writer:
Fix localization of “Abstract” title (#8702).
Allow abstract-title to be specified in docx metadata (#8794).
CunkedHTML writer: Make math work in top-level page (#8915).
Text.Pandoc.Logging: add new log message type ScriptingWarning [API change] (Albert Krewinkel).
Lua: report warnings from Lua scripts (Albert Krewinkel). Lua’s warning system is plugged into pandoc’s reporting architecture. Warnings that are raised with the Lua warn function are now reported together with other messages.
Use crypton-connection instead of connection (#8896, Felix Yan). Follows the change introduced in tls 1.7.0.
Bump versions for skylighting-core, skylighting.
Include lua/module/sample.svg in cabal extra-source-files (Felix Yan).
Add Nynorsk (New Norwegian) translations (Per Christian Gaustad).
Add tests for fillMediaBag/extractMedia.
INSTALL.md:
Mention alternatives to LaTeX to generate PDF (Norwid Behrnd).
Update Linux install links (harabat).
Pandoc-extras.md: add to “Academic publishing workflows” (#8696, Vladimir Alexiev).

New in Pandoc 3.1.3 (Jun 7, 2023)

New output format: typst.
New module: Text.Pandoc.Readers.Typst [API change].
DocBook reader:
Support more emphasis roles (Albert Krewinkel). The role “bf” is taken to indicate “bold face”, i.e., “strongly emphasized” text, while “underline” leads to underlined text.
JATS reader:
Improve title and label parsing in the JATS reader (#8718, Noah Malmed.)
Add rowspan, colspan and alignment to cells in jats table reader (#8408, Noah Malmed)
Org reader (Albert Krewinkel):
Require abstract environment to use lowercase.
Treat #+NAME as synonym for #+LABEL (#8578).
ODT reader:
Allow lists in table cells (#8892).
Allow frames inside spans (#8886).
RST reader:
Fix sorting on anonymous keys (#8877). This fixes a link resolution bug bug affecting RST documents with anonymous links.
HTML reader:
Fix iframe with data URI of an image (#8856). In this case we don’t want to try to parse the data at the URL. Instead, create an image inside a div.
RTF reader:
Fix bug in table parsing (#8767). In certain cases, text before a table was being incorporated into the table itself.
Docx reader:
Introduce support for Intense Quote (Stephan Meijer).
Markdown reader:
Disallow escaping of ~ and " in markdown_strict (#8777, Albert Krewinkel). This matches the behavior of the legacy Markdown.pl as well as what is described in the manual.
LaTeX reader: ignore args to column type in multicolumn (#8789).
HTML writer:
Use first paragraph in task item as checkbox label (#8729, Albert Krewinkel).
Ms writer:
Coerce titles to inlines (#8835). Block-level formatting is not allowed inside .TL.
LaTeX writer:
Fix width for multicolumn simple table (#8831).
Jira writer:
Use first code block class as highlighting language (#8814, Albert Krewinkel). The writer no longer searches the list of classes for a known programming language but always uses the first class in that list as the language identifier.
OpenDocument writer:
Handle row header column cells as header cells (#8764, Michael Stahl).
Fix invalid text:p inside text:p from meta (#8256).
ODT writer:
Don’t add settings.xml (Michael Stahl). This will cause defaults to be used, which is what we want.
Don’t add unnecessary Configurations2 directory (Michael Stahl).
Don’t add thumbnail (Michael Stahl).
Put manifest.version on directory file-entry (Michael Stahl). See ODF 1.3 part 2, 4.16.14.1.
Stop validator complaints by producing ODF 1.3 (Michael Stahl).
MediaWiki writer:
Remove links from inside links in mediawiki writer (#8739, Wout Gevaert).
Typst writer:
Omit bibliography if citations not enabled (#8763). With this change, the typst writer will omit the #bibliography command when citations is not enabled. (If you want to use pandoc’s own --citeproc, you should combine it with -t typst-citations to disable native typst citations.
Use <..> for labels, create internal links.
Use #footnote for notes (#8893).
Fix alignment issue in lists. It’s an aesthetic issue only; the first line had an extra space indent after the list marker.
Commonmark writer:
Use shortcut reference links: commonmark supports these.
EPUB template: add lang attribute to <html> (Gabriel Lewertoski).
Template styles.html: fix task-list styling in reveal.js (#8731, Albert Krewinkel).
LaTeX template: Fix babelfont (#8728).
Text.Pandoc.Parsing:
Remove unnecessary ‘spaces’ in parseFromString.
Text.Pandoc.ImageSize: Drop BOM at start of SVG if present. Otherwise our code can fail to determine image size.
Lua subsystem:
Fix value of PANDOC_SCRIPT_FILE for custom readers & writers (#8781, Albert Krewinkel). The value did not hold the actual file path for scripts in the custom folder of the datadir.
Fix YAML in translation files for cs and pl (#8787).
Fix pdf output via typst (#8754). One must now use typst compile rather than typst.
MANUAL.txt:
Added note that the user will need to create the user data dir (#8727).
Add wikilinks to non-default extensions (Ilona).
Update link to custom djot writer (Albert Krewinkel).
Better link to citation syntax.
Fix typo (sdhoward).
Note that # fancy list markers don’t work with commonmark (#8772, William Lupton).
Add commonmark fenced_div note (#8773, William Lupton).
Move highlighting documentation, with minor adjustments (William Lupton).
Fix inaccurate statement about spaces and tabs in template syntax (Frank Seifferth).
Update documentation for org-mode (Christian Christiansen, #8716).
doc/lua-filter.md:
Fix typos (#8734, perro tuerto).
Fix anchor (Toni Dietze).
Use full field name in example (#8857, Matt Dodson).
Fix copy-paste error (#8798, thron7).
CONTRIBUTING.md: update info on ghc versions.
INSTALL.md:
Fix cabal install instructions (Albert Krewinkel).
Use more relevant link to NetBSD/pkgsrc entry (Charlotte Koch).
Fix Windows install instructions for winget (#8799).
Tests: Rename test/docx/block_quotes_parse_indent.native for consistency (Stephan Meijer).
Add tls constraint on cabal.project. This is needed to avoid problems caused by the transition to crypton.
Require texmath 0.12.8.

New in Pandoc 3.1.2 (Mar 28, 2023)

Add a Lua REPL (Albert Krewinkel). This can be started with pandoc lua -i. It is also possible to instruct a filter to open the REPL at a certain point, for debugging (see pandoc.cli.repl).
Support typst as a --pdf-engine.
Add typst writer (#8713). New module Text.Pandoc.Writers.Typst, exporting writeTypst [API change].
Org reader:
Allow zero width space as an escape character (#8716, Christian Christiansen). Allow the character U+200B to be used as an escape character as described in the Org-mode documentation (https://orgmode.org/manual/Escape-Character.html).
DocBook reader:
Handle “book” for xref references (#8712, Andres Freund) This also adds a test xref to book and part.
Handle <part> (#8712).
HTML reader:
Fix behavior with -native_spans-raw_html (#8711). Previously with this configuration, <span>s were not treated as inline elements at all.
HTML writer:
Avoid duplicate classes (#8705).
Use img element instead of embed for .svg.gz and .png.gz etc. (#8699).
HTML writer footnotes changes (#8695): when --reference-location=section or =block, use an aside element for the notes rather than a section. When --reference-location=section, include the aside element inside the section element, rather than outside. (In slide shows, this option causes footnotes on a slide to be displayed at the bottom of the slide.)
EPUB writer:
Use different structure for epub footnotes (#8676, see #8672, #5583). Many EPUB readers are thrown off by pandoc’s current footnote output. Both the ol and the fact that the footnote backlink is at the end of the note seem to pose problems. With this commit, we now create a list of aside (or div) elements, instead of an ordered list. Each element begins with a note number that is linked back to the note reference. (So, the backlink occurs at the beginning rather than the end.) Thanks to @Porges and @lewer.
Docx writer:
Include abstract title (#8702). Uses localized term for abstract.
Markdown writer:
Use implicit figures if there’s a caption but no alt (#8689, Albert Krewinkel).
Jira reader (Albert Krewinkel):
Add panel title as nested div (#8681).
Require jira-wiki-markup 1.5.1 (#8680). This fixes a bug in the parser that caused text between two exclamation marks to be parsed as an image. The first ! of image markup must now be followed by a non-space character; otherwise, the enclosed text is parsed as normal content.
Ms writer:
Fix handling of Figure (#8660).
ICML writer:
Fix images with data (#8675). The Contents element should be inside Properties.
LaTeX writer:
Add Chinese to Babel languages.
Fix background image in Beamer when there are figure environments (#8671, Martín Pozo).
LaTeX template:
Add babelfonts variable to default LaTeX template. This allows specifying certain fonts to be used with certain babel languages. Thanks to Frederik Elwert.
Fix highlight/underline with lualatex (#8707). We need the lua-ul package instead of soul, which doesn’t work with lualatex.
Lua (Albert Krewinkel):
Add pandoc.cli.repl function
Fix json.encode for nested AST elements. Ensures that objects with nested AST elements can be encoded as JSON.
Auto-generate docs for pandoc modules.
Load text module as pandoc.text. This only affects the name in the Lua-internal documentation. It is still possible to load the modules via require 'text', although this is deprecated.
Move docs from module text to pandoc.text The latter is easier to use and more consistent with the other modules.
Keep the Lua stack clean A metatable used during initialization was not properly removed from the stack. Likewise, accessing the CommonState from Lua previously led to the pollution of the Lua stack with a left-over value.
Add function pandoc.format.from_path.
Allow to get the JSON encoding of log messages.
Text.Pandoc.Format: Add new function formatFromFilePaths [API change] (#8710, Albert Krewinkel).
The old Text.Pandoc.App.FormatHeuristics module has been removed.
In --version, use Windows %APPDATA% variable to describe user data dir (#8686, Pablo Rodríguez).
Text.Pandoc.App.CommandLineOptions: don’t lowercase arg to --from/--read (Albert Krewinkel). This prevented users to use custom writers with uppercase characters in their filenames. Format-normalization, including lower-casing of format identifiers, happens during format parsing.
Documentation:
Add doc/nix.md.
Add doc/extras.md. This was formally in the website repo.
doc/lua-filters.md: improve docs for pandoc.zip.
Factor out make_macos_release.sh from the release candidate workflow. Use cabal instead of stack to build the macos binary.
Modify linux/make_artifacts.sh so it will work on cirrus.
Switch to hslua-2.3
Depend on latest releases of texmath, doclayout.

New in Pandoc 3.1.1 (Mar 6, 2023)

EPUB reader: Give additional information in error if the epub zip container can’t be unpacked.
TSV reader: don’t gobble tabs as whitespace (#8661).
Org reader: accept empty tables (#8659).
LaTeX reader: fix multiplication syntax for tabular (#8658). We recognized *{6}{...} but not *6{...} or *6c.
Docx reader: parse image alt texts in LibreOffice generated files. LibreOffice tags images slightly differently than Word; this change lets the parses take that difference into account when looking for an image description (alt text).
DocBook reader:
Fix <xref> references to tables in DocBook files (#8626, Pavol Otto).
Parse figure as a Figure element in the AST (#8668).
JATS reader: avoid generating duplicate figure captions (#8669).
RST reader: align with spec in syntax for role names (#8653). In particular, we now allow colons in row names.
Add note on converting from .doc format to FAQs (#8654).
Trap error in getAppUserDataDirectory (#8648). This can raise an error if pandoc is run in a non-user environment.
LaTeX writer: do not use longtable foot with Beamer (#8638, Albert Krewinkel). The table foot is made part of the table body, as otherwise it won’t show up in the output. The root cause for this is that longtable cannot detect page breaks in Beamer.
LaTeX template: Add CJKsansfont and CJKmonofont for XeLaTeX (#8656, Yudong Jin). CJKsansfont and CJKmonofont will be set for xelatex only if CJKmainfont is also provided.
URL style in ConTeXt (#8612, Thomas Hodgson). Previously, a URL like this would be in monospace text: useURL[url1][https://example.com]. Now, it will match the main text unless the linkstyle variable is set, which controls the styling of all links. Closes #8602.
Asciidoc writer: Properly escape | in table cells (#8665).
asciidoc{,tor} template: fix revision date when author is unset (#8637, arcnmx). Revision line syntax is only valid in combination with an author line, so the date attribute must be set explicitly when the author is missing
HTML writer: allow “track” element to be treated as block-level HTML (#8629).
Include needed polyfill when MathJaX is used (#8625).
JATS writer: include alt-text in <graphic>, <inline-graphic> elements (#8631, Albert Krewinkel).
Chunked HTML writer: Retain metadata in processing sections for chunked HTML (#8620). Previously we suppressed metadata in all but the top page, in order to prevent the title block from being printed on every page. This prevented use of custom variables set by metadata fields. This commit moves to a better solution: a conditional in the default template restricts the title block to the top page.
Lua API:
Add new function pandoc.system.cputime (Albert Krewinkel). The function returns the CPU time consumed by pandoc and can be used to benchmark Lua computations.
Add module pandoc.json to handle JSON encoding (#8605, Albert Krewinkel).
Use pandoc-lua-marshal 0.2.1 (Albert Krewinkel). All major AST elements now have __tojson metamethods that return the JSON representation of an element. This allows to JSON-encode these elements with libraries that respect the __tojson metamethod, including dkjson.
Use latest zip-archive. This allows pandoc to open certain epubs that it could not open before.
Use commonmark-extensions 0.2.3.4. This fixes some bugs involving definition lists and inline formatting.
Use latest skylighting-format-context
MANUAL.txt:
Document chunk-template in defaults file.
Remove obsolete “raw content in a style” section.
Revise documentation for --mathml to reflect support in all major browsers (#8667).
docs/custom-readers.md: Update JSON parsing example. The example now uses the built-in pandoc.json library to parse the API output.
doc/press.md: Add article on CiTO in J Cheminform by @egonw.
doc/lua-filters.md: fix typo in run_json_filter (Morgan Willcock).

New in Pandoc 3.1 (Feb 10, 2023)

New in Pandoc 3.0.1 (Jan 25, 2023)

New in Pandoc 3.0 (Jan 18, 2023)

Split pandoc-server, pandoc-cli, and pandoc-lua-engine into separate packages (#8309). Note that installing the pandoc package from Hackage will no longer give you the pandoc executable; for that you need to install pandoc-cli.
Pandoc now behaves like a Lua interpreter when called as pandoc-lua or when pandoc lua is used (#8311, Albert Krewinkel). The Lua API that is available in filters is automatically available to the interpreter. (See the pandoc-lua man page.)
Pandoc behaves like a server when called as pandoc-server or when pandoc server is used. (See the pandoc-server man page.)
A new command-line option --list-tables, causes tables to be formatted as list tables in RST (#4564, with Francesco Occhipinti).
New command line option: --epub-title-page=true|false allows the EPUB title page to be omitted (#6097).
--reference-doc can now accept a URL argument (#8535) and load a remote reference doc.
--version output no longer contains version info for dependent packages. Instead, it contains a “Features” line that indicates whether the binary was compiled with support for acting as a server, and for using Lua filters and Custom writers.
A new option --split-level replaces --epub-chapter-level and affects both EPUB and chunked HTML output. --epub-chapter-level will still work but is deprecated.
Multiple input files with --file-scope: fix case where the links are URL-encoded, e.g. with %20 (#8467).
Produce error if --csl is used more than once (#8195, Prat).
Remove deprecated --atx-headers option.
Remove deprecated option --strip-empty-paragraphs.
In --verbose mode add message when running citeproc (as with other filters).
Add new mark extension for highlighted text in Markdown, using == delimiters (#7743).
Add new extensions wikilinks_title_after_pipe and wikilinks_title_before_pipe for commonmark and markdown. (#2923, Albert Krewinkel). The former enables links of style [[Name of page|Title]] and the latter [[Title|Name of page]]. Titles are optional in both variants, so this works for both: [[https://example.org]], [[Name of page]]. The writer is modified to render links with title wikilink as a wikilink if a respective extension is enabled. Pandoc will use wikilinks_title_after_pipe if both extensions are enabled.
Add prefixes to identifiers with --file-scope (#6384). This change only affects the case where --file-scope is used and more than one file is specified on the command line. In this case, identifiers will be prefixed with a string derived from the file path, to disambiguate them. For example, an identifier foo in contents/file1.txt will become contents__file1.txt__foo. Links will be adjusted accordingly: if file2.txt links to file1.txt#foo, then the link will be changed to point to #file1.txt__foo. Similarly, a link to file1.txt will point to #file1.txt. A Div with an identifier derived from the file path will be added around each file’s content, so that links to files will still work.
New output format: chunkedhtml. This creates a zip file containing multiple HTML files, one for each section, linked with “next,” “previous,” “up,” and “top” links. (If -o is used with an argument without an extension, it is treated as a directory and the zip file is automatically extracted there, unless it already exists.) The top page will contain a table of contents if --toc is used. A sitemap.json file is also included. The option --split-level determines the level at which sections are to be split.
Support complex figures (Albert Krewinkel, Aner Lucero). There is now a dedicate Figure block constructor for figures. The old hack of representing a figure as Para [Image attr [..alt..] (source, "fig:title")] has been dropped. Here is a summary of figure support in different formats:
Markdown reader: paragraphs containing just an image are treated as figures if the implicit_figures extension is enabled. The identifier is used as the figure’s identifier and the image description is also used as figure caption; all other attributes are treated as belonging to the image.
Markdown writer: figures are output as implicit figures if possible, via HTML if the raw_html extension is enabled, and as Div elements otherwise.
HTML reader: <figure> elements are parsed as figures, with the caption taken from the respective <figcaption> elements.
HTML writer: the alt text is no longer constructed from the caption, as was the case with implicit figures. This reduces duplication, but comes at the risk of images that are missing alt texts. Authors should take care to provide alt texts for all images. Some readers, most notably the Markdown reader with the implicit_figures extension, add a caption that’s identical to the image description. The writer checks for this and adds an aria-hidden attribute to the <figcaption> element in that case.
JATS reader: The <fig> and <caption> elements are parsed into figure elements, even if the contents is more complex.
JATS writer: The <fig> and <caption> elements are used write figures.
LaTeX reader: support for figures with non-image contents and for subfigures.
LaTeX writer: complex figures, e.g. with non-image contents and subfigures, are supported. The subfigure template variable is set if the document contains subfigures, triggering the conditional loading of the subcaption package. Contants of figures that contain tables are become unwrapped, as longtable environments are not allowed within figures.
DokuWiki, Haddock, Jira, Man, MediaWiki, Ms, Muse, PPTX, RTF, TEI, ZimWiki writers: Figures are rendered like Div elements.
Asciidoc writer: The figure contents is unwrapped; each image in the the figure becomes a separate figure.
Classic custom writers: Figures are passed to the global function Figure(caption, contents, attr), where caption and contents are strings and attr is a table of key-value pairs.
ConTeXt writer: Figures are wrapped in a “placefigure” environment with startplacefigure/endplacefigure, adding the features caption and listing title as properties. Subfigures are place in a single row with the startfloatcombination environment.
DocBook writer: Uses mediaobject elements, unless the figure contains subfigures or tables, in which case the figure content is unwrapped.
Docx writer: figures with multiple content blocks are rendered as tables with style FigureTable; like before, single-image figures are still output as paragraphs with style Figure or Captioned Figure, depending on whether a caption is attached.
DokuWiki writer: Caption and “alt-text” are no longer combined. The alt text of a figure will now be lost in the conversion.
FB2 writer: The figure caption is added as alt text to the images in the figure; pre-existing alt texts are kept.
ICML writer: Only single-image figures are supported. The contents of figures with additional elements gets unwrapped.
OpenDocument writer: A separate paragraph is generated for each block element in a figure, each with style FigureWithCaption. Behavior for single-image figures therefore remains unchanged.
Org writer: Only the first element in a figure is given a caption; additional block elements in the figure are appended without any caption being added.
RST writer: Single-image figures are supported as before; the contents of more complex images become nested in a container of type float.
Texinfo writer: Figures are rendered as float with type figure.
Textile writer: Figures are rendered with the help of HTML elements.
XWiki: Figures are placed in a group.
Changes in custom readers/writers:
It is now possible to have a custom reader and a custom writer for a format together in the same file. The file may also define a custom template for the writer.
Pandoc now checks the folder custom in the user’s data directory for a matching script if it can’t find one in the local directory. Previously, the readers and writers data directories were searched for custom readers and writers, respectively. Scripts in those directories must be moved to the custom folder.
Custom readers used to implement a fallback behavior that allowed to consume just a string value as input to the Reader function. This has been removed, the first argument is now always a list of sources. Use tostring on that argument to get a string.
New module Text.Pandoc.Writers.ChunkedHTML, exporting writeChunkedHtml [API change].
We now set the pandoc-version variable centrally rather than in the writers. One effect is the man writer now emits a comment with the pandoc versio
Pandoc-server:
Add simple CORS support to pandoc-server (#8427).
Print message to stderr when starting the server.
Docx reader:
Mark unnumbered headings with class unnumbered (#8148, Albert Krewinkel). This change ensures good conversion results when converting with --number-sections.
Support parsing of highlighted text.
Fix handling of oMathPara in w:p with other content (#8483).
ODT reader:
Fix relative links. ODT adds a ../ to relative links (see #3524); this needs to be removed when converting from ODT.
Handle “section” elements (#8409).
Rename Text.Pandoc.Readers.Odt -> Text.Pandoc.Readers.ODT, for consistency with Writers.ODT. Rename readOdt -> readODT. [API change]
DocBook reader:
Support href on link even in a fragment (#8437). (We now just look for an href attribute without worrying about the namespace.)
Parse title from imageobject/objectinfo (#8437).
JATS reader:
Handle uri element in references (#8270).

New in Pandoc 2.19.2 (Aug 22, 2022)

New in Pandoc 2.19.1 (Aug 19, 2022)

Add server capabilities.
New exported module Text.Pandoc.Server [API change].
The pandoc executable now starts up a web server when renamed or symlinked as pandoc-server, and functions as a CGI program when renamed or symlinked as pandoc-server.cgi. See the man page for pandoc-server for full documentation.
Text.Pandoc.App.Opts: Redo FromJSON for Opt so that optional values can be omitted (in which case the values from defaultOptions are used).
Org reader: treat “abstract” block as metadata (Albert Krewinkel, #8204). A block of type “abstract” is assumed to define the document’s abstract. It is transferred from the main text to the metadata.
Org template: add abstract from metadata as block of type “abstract” (#8204).
HTML writer: use flex property for column widths (Albert Krewinkel, #8232).
LaTeX writer:
Add label to tables that have an identifier (Albert Krewinkel, #8219). Tables with an identifier are marked with a label. A caption is always included in this case, even if the caption is empty.
Use textquotesingle for straight quotes in text.
Fix widths of multicolumn cells (#8218).
LaTeX template: fix behavior of colorlinks variable (Albert Krewinkel, #8226). Fixes a regression in 2.19 that required the boxlinks variable to be set in addition to the usual link coloring variables. Otherwise links were never colored in LaTeX PDF output.
Text.Pandoc.Highlighting: Export lookupHighlightingStyle [API change]. Previously this lived in an unexported module Text.Pandoc.App.CommandLineOptions, under the name lookupHighlightStyle.
Text.Pandoc.App:
Remove unneeded MonadIO constraints in readSources.
Factor out convertWithOpts' from convertWithOpts. This runs in any PandocMonad, MonadIO, MonadMask instance. So far it is not exported, but it might find a use later.
Support --strip-comments in commonmark/gfm (#8222). This change makes the commonmark reader sensitive to readerStripComments.
Lua: add function pandoc.utils.citeproc (Albert Krewinkel). The function runs the citeproc processor on a Pandoc document. Exposing this functionality to Lua allows to make citation processing part of a filter or writer, simplifies the creation of multiple bibliographies, and enables the use of varying citation styles in different parts of a document.
Refactor linux/make_artifacts.sh.
Update INSTALL.md installation from source instructions.
Use base64 package instead of base64-bytestring. It is supposed to be faster and more standards-compliant.
trypandoc improvements:
Add dropdown with canned examples.
Add citeproc support.
Support csv, bibliographic and binary formats.
Add load from file.
Add permalink. Don’t always reload page.
Use vanilla JS and CSS + the new pandoc-server.cgi.
Allow haddock-library-1.11.0.
Convert tool/extract-changes.hs to a Lua filter.

New in Pandoc 2.19 (Aug 4, 2022)

Add --embed-resources flag (Elliot Bobrow, #7331). This can be used to embed resources without implying --standalone. Deprecate --self-contained in favor of --embed-resources --standalone.
Allow environment variable interpolation in highlight-style and pdf-engine fields in defaults files (#8061; Jaehwang Jung, #8073).
Allow placing custom readers and writers in user data directory (Albert Krewinkel, #8112) (readers and writers subdirectories).
Add tsv (tab separated values) as an input format (#7974). [API change]: Text.Pandoc.Readers.CSV now exports readTSV. Internal change: In Text.Pandoc.CSV, CSVOptions has changed so that csvQuote takes a Maybe value.
Add tex_math_dollars to gfm default extensions (reflecting gfm’s new support for math).
RST, Org, Markdown readers: support rowspans and colspans in grid tables (#8202, Albert Krewinkel). Note: the writers does not yet support these more complex grid table features, so these complex grid tables will not round-trip.
HTML, LaTeX, and MediaWiki readers: use formatCode (#8162, #8129, Elliot Bobrow). This moves formatting from inside inline code elements to the outside, since pandoc’s Code element only takes string content.
Markdown reader:
Don’t parse inline notes with blank lines inside (#8028).
Allow attributes in special spans (e.g. smallcaps, underline) (Albert krewinkel, #4102). These spans are parsed as SmallCaps or Underline elements, but any attributes are included in a wrapping Span.
HTML reader:
Allow sublists that are not marked as items (Albert Krewinkel, #8150). This is technically invalid HTML, but it can be found in the wild and browsers handle it.
Org reader (Albert Krewinkel):
Recognize absolute paths on Windows (Albert Krewinkel, #8201).
Recognize {webp,jxl} files as images (YI).
Allow attrs for Org tables (Albert Krewinkel, #8049). Tables with attributes are no longer wrapped in Div elements; attributes are added directly to the table element.
Support line selection in INCLUDE directives (Brian Leung, #8060).
Fix Post / Pre mixup when setting emphasis chars (Amir Dekel, #8134).
LaTeX reader:
Support includesvg (#8027).
Unescape characters in lstinline inside passthrough (#8179).
Improve mathEnvWith (#8122). When converting e.g. an align environment to an aligned environment inside a Math element, we need to include a newline before the end{aligned}, since the previous line might end in a comment.
Fix treatment of extensions for input in LaTeX reader (#8092). Previously we required a .tex extension, but TeX allows any extension for input (as opposed to include).
RTF reader:
support nosupersub (#8170).
TikiWiki reader:
Support underlined text
DocBook reader:
Improved reading <xref> elements (Frerich Raabe, #8065).
JATS reader:
Strip ref- prefix from ref id in xref (#8007).
Support edition in references (#8087).
RIS reader:
Make parser more forgiving (#8034). Allow blank lines after entries. Allow entries with no space after the -, provided they just have a newline, e.g. DB -n.
Get right order of names (#8055).
MediaWiki reader:
Allow HTML comment after row start (#8110).
DokuWiki reader:
The tex_math_dollars extension is now supported for dokuwiki (but off by default) (#8178).
Content inside <latex>...</latex> is parsed as raw LaTeX inline, and inside <LATEX>..</LATEX> as raw LaTeX block (#8178).
The behavior of <php>...</php> is changed, so that instead of producing a code block, it produces raw HTML with <?php ... ?>.
LaTeX writer:
Improve grouping with autocites (#8088).
Extend list of book documentclasses (Wentau Han, #8053).
Fix width of multicolumn cells (Albert Krewinkel, #8090). Cells spanning multiple columns must be given an explicit width, calculated from the table properties.
Beamer: allow containsverbatim as alternative to fragile (#8080).
HTML writer:
Add ‘footnotes’ identifier to footnotes section (#8043).
Fix bug with --number-offset. This formerly caused section divs to be produced, even when --section-divs was not specified (#8097).
Use CSS flexboxes for columns (Albert Krewinkel). This allows an arbitrary number of columns, while the previous approach assumed exactly two columns.
Allow “spanlike” classes to be combined (see #8194). Previously classes like “underline” and “marked” had to be the first class in a span in order for the span to be interpreted as a “ul” or “mark” element. This commit allows these special classes to be “stacked,” e.g. [test]{.mark .underline}; in addition, the special classes are no longer required to come first in the list of classes.
Avoid doubled style attribute when height and width are added to style because of an image, but the image already has a style attribute (#8047).
Do not include the deprecated doc-endnote role (#8030). doc-endnote was deprecated in DPUB-ARIA 1.1.
Remove extra soft break for tasklist (black-desk, #8142). Browser will display the extra newline character between checkbox and text as a space, which make tasklist items cannot be aligned.
EPUB writer:
Allow choice of math method for v3 (#8164). Previously we always used MathML for math in EPUB3, because the spec includes MathML. But this is not widely supported by readers, so it seems better to allow users to choose their math method as they can with EPUB2 or HTML. NOTE: Existing workflows that produce EPUBv3 documents including math will be affected by this change. You must add --mathml to your command line if you want to continue producing MathML.
RST writer:
Fix missing spaces with nested inlines (#8182).
Always escape literal backslash (#8178).
Ms writer:
Add comment in preamble stating generator.
Fix roff ms syntax highlighting definitions (#8175, thanks to Branden Robinson).
ConTeXt writer:
Support complex table structures (Albert Krewinkel, #8116). The following table feature are now supported in ConTeXt:
colspans,
rowspans,
multiple bodies,
row headers, and
multi-row table head and foot.
The wrapping placetable environment is also given a reference option with the table identifier, enabling referencing of the table from within the document.
Unify link handling (Albert Krewinkel, #8096). Autolinks, i.e. links with content that’s the same as the linked URL, are now marked with the url command. All other links, both internal and external, are created with the goto command, leading to shorter, slightly more idiomatic code. As before, autolinks can still be styled via setupurl, other links via setupinteraction.
Use “sectionlevel” environment for headings (Albert Krewinkel, #5539). The document hierarchy is now conveyed using the startsectionlevel/stopsectionlevel by default. This makes it easy to include pandoc-generated snippets in documents at arbitrary levels. The more semantic environments “chapter”, “section”, “subsection”, etc. are used if the --top-level-division command line parameter is set to a non-default value.
Docx writer:
Add w:lang to rPr for Span and Div with lang attribute, so that Word can know that “Apfel” is not a spelling error (#8026).
Prevent crashing when handling invalid tables (Albert Krewinkel, #8102). Tables with different numbers of cells per row would sometimes crash pandoc. This fix prevents this by cutting off overlong rows.
ICML writer:
Support custom-style attribute on Table (#8079).
AsciiDoc writer:
Fix commas in link text (#8070). Commas in link text trigger interpretation of attributes. To block this, we replace them with numeric entities.
Fix underline. We were rendering it as +++text+++; this is now changed to [.underline]#text#. See comment at #8070 (comment).
FB2 writer:
Fix handling of non-section Divs (#8123).
Markdown writer:
Disable soft wrapping when hard_line_breaks enabled (#8035). We were already doing this for markdown; this commit does the same thing for markua and commonmark and gfm.
Avoid excessive indentation on bullet lists for commonmark, markua, gfm. They are now nested by 2 spaces instead of 4 (#8011).
Text.Pandoc.Class:
Add new function findFileWithDataFallback [API Change] (Albert Krewinkel).
fillMediaBag: Keep attributes of original image on Span (Albert Krewinkel, #8099). Images that cannot be fetched are replaced with a Span that contains the image’s description. The span now also retains all original image attributes and inherits all attributes of the image. Furthermore, the classes image and placeholder are added, and path and title are store in attributes original-image-src and original-image-title, respectively.
Text.Pandoc.Shared:
makeSections: don’t make a section for a div with class “fragments” (#8098).
Ensure that Nulls are ignored by makeSection and in segmenting slides (#8155).
Add formatCode function to Text.Pandoc.Shared [API change] (Elliot Bobrow, #8129).
taskListItemToAscii: handle asciidoctor’s characters (#8011). Asciidoctor uses different unicode characters for task lists; we should recognize them too and be able to convert them to ascii task lists in formats like gfm.
Deprecate deLink and mark for later removal.
Text.Pandoc.Writers.Shared:
toTableOfContents: Don’t replace links with empty spans in TOC (#8020).
Text.Pandoc.Readers.Metadata:
Ensure that metadata values w/o trailing newlines are parsed as inlines, as the manual states. Previously, they were parsed as inlines if they would otherwise have been a single Plain or Para, but otherwise left unchanged. This led to some quirky results (e.g. #8143). We now use the general function blocksToInlines from T.P.Shared.
Text.Pandoc.Parsing:
Simplify gridTableWith', gridTableWith [API Change] (Albert Krewinkel). The functions gridTableWith and gridTableWith' no longer takes a boolean argument that toggles whether a table head should be parsed: both, tables with heads and without heads, are always accepted now.
Lua subsystem (Albert Krewinkel):
Extend pandoc.system module (Albert Krewinkel, #8184). The module now has the additional functions list_directory, make_directory, and remove_directory. This makes it easier to write cross-platform scripts that need to inspect or modify the file system.
Require pandoc-lua-marshal 0.1.7. Adds a clone methods to Pandoc objects and allows to pass Blocks in instead of full Caption elements.
Add fields pandoc.readers and pandoc.writers (#8177). The set of supported input and output formats is made available to Lua users.
Ensure that tables marshaled via JSON arrays behave like Lists. This allows to invoke methods like map and includes on lists like PANDOC_WRITER_OPTIONS.extensions.
Require hslua-2.2.1, unless lua53 flag is set, and do not reset foreign encoding before running Lua. This fixes a problem where the encoding used for Lua filenames would sometimes mismatch the encoding used by the OS.
Simplify module loading code. Modules are now loaded directly; the special pandoc Lua package searcher is no longer necessary and has been removed.
Add function pandoc.mediabag.fill (#8104). The function allows to fill the mediabag with all images in a given document. Images that cannot be fetched are replaced with a Span containing the image description.
Populate mediabag after filters have run (Albert Krewinkel, #8099). The mediabag is filled with document resources after the filters have run. This allows, for example, filter authors to modify image paths before pandoc tries to fetch the images. Lua filters that rely on a filled mediabag can use the new pandoc.mediabag.fill function to perform that action in the filter.
Ms template: redefine rather than removing .CH macro (#8175).
JATS template (Albert Krewinkel, except as noted):
Include particles, prefix, suffix in names.
Mark authors with cor-id as corresponding authors. Corresponding authors are marked by setting the attribute corresp="yes" in their respective <contrib> element.
Unconditionally include permissions element (#8040). Fixes a bug that caused license information to be omitted when no copyright information was provided.
Follow JATS4R recommendation and PudMed Central for license URI (Castedo Ellerman, #8041).
LaTeX template:
Rename textormath to TextOrMath (Hos Es, #8036).
Fix links-as-notes (Albert Krewinkel, #8077).
HTML template styles:
Remove span.underline rule. This is superfluous now that we render Underline as <u>.
Improve CSS for task lists (#8151).
LaTeX template: Add boxlinks variable for LaTeX/PDF output (#8198). If boxlinks is set but colorlinks is not, then boxes will be printed around links (hidelinks will not be set in hypersetup).
--self-contained: Handle url() in <style> elements (#8193).
Text.Pandoc.PDF: use SHA1 hash of filename when converting SVG. The previous code threw away the directory component of the filename in constructing a new one. This led to surprising results if you had e.g. foo/pic.svg and bar/pic.svg; in the final PDF they’d be the same image, because the latter would overwrite the former in the temp directory.
Remove Muse reader round-trip tests. These are nondeterministic and have repeatedly failed on strange edge cases.
Update fonts MIME following IANA recommendation (Gabriel Lewertowski, #8127).
Future compat change for liftA2 export from Prelude (Georgi Lyubenov, #8132).
Update default.csl from the latest chicago-author-date.csl.
Update manfilter.hs for greater portability (#8045). The tables in our man pages were not rendering correctly with mandoc, now used by default with macOS. mandoc doesn’t allow man formatting inside table cells. For maximum portability, we now render the tables in plain format and include them as code blocks in the man page.
CI: update macos container version (#8197, Sukka).
Add nightly flag. This causes a -nightly-COMPILEDATE suffix to be added the the output of --version (#8016). This is used in the nightly CI builds.
Update dependencies (aeson, skylighting, pandoc-lua-marshall, citeproc, texmath).
Documentation improvements (thanks to Jiří Wolker, Castedo Ellerman, Albert Krewinkel, Bastien Dumont, Cezar Drożak, Benjamin Wuethrich, Ivan Panchenko, Sukil Etxenike, Masataka Ogawa).

New in Pandoc 2.18 (May 11, 2022)

New input formats: endnotexml (EndNote XML bibliography), ris (RIS bibliography).
A RIS bibliography file may now be used with --citeproc.
Citeproc: Allow a formatted bibliography to be placed in metadata fields via a Div with class refs (#7969, #526). Thus, one can include a metadata field, say refs, whose content is an empty div with id refs, and the formatted bibliography will be put into this metadata field. It may then be interpolated into a template using the variable refs.
Ensure that you don’t get PDF output to terminal. -t pdf now behaves like -t docx and gives an error unless the output is redirected.
--version now prints hslua version (#7929) and Lua version (#7997, Albert Krewinkel).
Change --metadata-file parsing so that, when the input format is not markdown or a markdown variant, pandoc’s markdown is used (#6832, #7926). When the input format is a markdown variant, the same format is used. Reason for the change: it doesn’t make sense to run the markdown parser with a set of extensions designed for a non-markdown format, and this dramatically limits what people can do in metadata files.
Trim whitespace from math in --webtex (#7892). This fixes problems with –webtex and markdown output, when display math starts or ends with a newline.
New exported module Text.Pandoc.Readers.EndNote, exporting readEndNoteXML, readEndNoteXMLCitation, and readEndNoteXMLReferences. [API change]
--self-contained: issue warning rather than failing with an error if a resource can’t be found (#7904).
New exported module, Text.Pandoc.Readers.RIS, exporting readRIS (#7894).
LaTeX reader:
Handle subequations as inline math environment (#7883).
Rudimentary support for vbox (#7939).
Support today (#7905).
Handle label and ref for footnotes (#7930).
Allow inline groups starting with bgroup (#7953).
Use custom TokStream that keeps track of whether macros are expanded. This allows us to improve performance a bit by avoiding unnecessary runs of the macro expansion code (e.g. from 24 ms to 20 ms on our standard benchmark).
Further optimizations for inline parsing.
Better handling of usepackage. If the package is local but causes parse errors, parse everything up to the error and skip the rest. Issue a CouldNotParseIncludeFile warning indicating that parsing failed at that point.
Text.Pandoc.Readers.LaTeX.Parsing: Monoid and Semigroup instances for TokStream.
HTML reader:
Give warnings and emit empty note when parsing <a epub:type="noteref"> and the identifier doesn’t correspond to anything in the note table (#7884). Previously we just silently skipped these cases.
Fix parsing of epub footnotes (#7884).
DocBook reader:
Handle complete set of entities as specified at https://www.w3.org/2003/entities/2007doc/byalpha.html (#7938).
Handle abstract in info section (#7747).
Improve info parsing.
Simplify metadata parsing code (#7747). Handle abstract as block-level content. Report skipped info elements with --verbose.
Handle address and coyright in metadata (#7747).
DokuWiki reader:
Add DokuWiki table alignment (#5202, damon-sava-stanley).
RST reader:
Fix treatment of headerless simple tables (#7902).
Wrap math in Span to preserve attributes (#7998, Albert Krewinkel). Math elements with a name, classes, or other fields are wrapped in a Span with these attributes.
JATS reader:
Improve handling of fn-group elements (#6348, Albert Krewinkel). Footnotes in <fn-group> elements are collected and re-inserted into the document as proper footnotes in the place where they are referenced.
Handle pub-date (#8000).
Support PMID, DOI, issue in citations (#7995).
Improve refs parsing. Handle issn and isbn; use simpler form for issued date.
Strip ‘ref-’ from ref id in constructing CSL id. This allows better round-tripping, because the JATS writer adds the ref- prefix to the citation id to get the ref element’s id.
Org reader:
Allow “:” in property drawer keys (Lucas V. R). Any non-space character is allowed as property drawer key, including “:” itself (so it is not really a delimiter). The real delimiter is a space character, so in a drawer like
:PROPERTIES:
::k:ey:: value
:END:
“:k:ey:” is a key with value “value”.
Allow comments above property drawer.
More flexible LaTeX environments (Lucas V. R).
Handle #+bibliography: as metadata so that it can work with --citeproc.
Parse #+print_bibliography: as Div with id refs.
Allow multiple #+bibliography:.
Markdown reader:
Allow one-column pipe tables with pipe on right (#7919).
Remove restriction on identifiers, so they no longer need to begin with a letter (#7920).
Docx reader:
Enable citations extension for docx reader (#7840). When enabled, Zotero, Mendeley, and EndNote citations embedded in a docx are parsed as native pandoc citations. (When disabled, the generated citation text and bibliography are passed through as regular text.) The bibliography generated by the plugin is suppressed. Instead, bibliographic data embedded in citation items is added to the references metadata field so that it can be used with --citeproc.
Docbook writer:
Interpret links without contents as cross-references (#7360, Jan Tojnar). Links without text contents are converted to <xref> elements. DocBook processors will generate appropriate cross-reference text when presented with an xref element.
Docx writer:
Single numbering ID for examples (#7895, mjfs). This change ensures that example list items all belong to a single number sequence, so that if items are added or deleted in a word processor, the other items will renumber automatically.
Add bookmark with table id to table (#7989, Nikolai Korobeinikov, #7285). This allows tables with ids to be linked to.
Ipynb writer:
Handle metadata better (#7928). Previously we used the markdown writer to render metadata. This had some undesirable consequences (e.g. en dash expanded to -- when smart enabled), so now we use the plain writer.
LaTeX writer:
Avoid extra space before CSLRightInline (#7932).
Add scrreport to chaptersClasses (#6168, ivardb).
Support page,trim,clip attributes on images (#7181).
Add () after booktabs rules (#8001). These commands take optional arguments with () and [], which can lead to problems if the content of the table cell begins with these characters.
RST writer:
Support all standard metadata (“bibliographic”) fields.
HTML writer: performance improvements.
Org writer:
Stop indenting property drawers, quote blocks (#3245, Albert Krewinkel). This follows the current default org-mode behavior.
Markdown writer:
Move table-related code into submodule (Albert Krewinkel).
Don’t produce redundant header identifier when the gfm_auto_identifiers extension is set (#7941).
Update escaping rules for . We now escape only if raw_tex is enabled or it is followed by a non-alphanumeric.
JATS writer:
Encode author “others” as <etal/> (Albert Krewinkel). Citeproc adopted the BibTeX convention to use the author name “others” when there are additional authors that are not named. JATS uses the <etal> element for this.
Avoid doubled ref-list element (#7990). Previously when generating JATS with the element_citations extension enabled, the references were put in a doubly-nested ref-list element (<ref-list><ref-list>...).
Keep edition info in element citations (#7993, Albert Krewinkel).
Fix handling of CSL variable ‘page’ (not ‘pages’ as we had before). It should go to ‘lpage’ and ‘rpage’, not ‘page-range’.
EPUB writer: refactor for clarity (#7991, Jonathan Dönszelmann, Ola Wolska, Ivar de Bruin, Jaap de Jong).
Custom writer (Albert Krewinkel):
Support new-style Writer function (Albert Krewinkel). See the documentation for custom writers for details.
Produce stacktrace if Writer function fails
Text.Pandoc.Logging: add CouldNotParseIncludeFile constructor for LogMessage [API change].
Text.Pandoc.Shared:
Put id attributes on TOC entries (#7907, damon-sava-stanley). Naming scheme of id is “toc-” + id of linked to header/section. Effects HTML, Markdown, Powerpoint, and RTF.
Define ordNub as alias for nubOrd from containers package (#7963, Albert Krewinkel).
Export ensureValidXmlIdentifiers. This function changes identifiers that don’t start with letters, and internal links to these identifiers, making them compatible with XML standards. The change is simple: we add id_ to the front. There is potential for duplication if there are already id_... identifiers defined, but this seems rare enough not to worry too much about.
Ensure that valid XML identifiers are used in Docbook, EPUB, FB2, HTML4, S5, Slidy, Slideous, ICML, ODT, TEI writers. Thus, if you convert [anchor]{#1} and [link to](#1), id_1 will be used instead of 1 for the identifier.
Lua (Albert Krewinkel).
Add module pandoc.layout to format and layout text.
Move custom writer code into Lua hierarchy.
Use pandoc-lua-marshal 0.1.5.
Allow any type of callable object as argument to List functions filter, map, and find_if. These previously required the argument to be of type function, which was too restrictive.
Inline: the type of Image captions is now Inlines instead of List.
Allow passing Sources to pandoc.read (#8002).
Text.Pandoc.PDF:
Restore wkhtmltopdf as default pdf engine for HTML (Albert Krewinkel).
Allow custom writer as format if engine is explicitly specified (#7898, Albert Krewinkel). Note that it may be necessary to explicitly specify a template on the command line.
Text.Pandoc.MediaBag: improve detection of absolute paths (#7881).
Text.Pandoc.Extensions:
Remove raw_tex extension from list of commonmark extensions, and from the commonmark_x defaults. commonmark doesn’t parse raw TeX, and it doesn’t make sense to write it if we don’t parse it.
Remove native_divs from allowed gfm extensions (#7965). This allows <div> to be suppressed using -raw_html. Previously native_divs was enabled but could not be suppressed, because it was not in the list of available extensions for commonmark-based formats.
Text.Pandoc.Parsing:
Partition module into (internal) submodules (#7962, Albert Krewinkel).
Unify grid table parsing (#7971, Albert Krewinkel). Grid table parsing in Markdown and RST are updated use the same functions. Functions are generalized to meet requirements for both formats. This change also lays the ground for further generalizations in table parsers, including support for advanced table features. [API change] in Text.Pandoc.Parsing:
Parse results of functions tableWith' and gridTableWith' are now a mf TableComponents instead of a quadruple of alignments, column widths, header rows and body rows.
Additional exports from Text.Pandoc.Parsing: tableWith', TableComponents, TableNormalization, toTableComponents, toTableComponents'.
Text.Pandoc.XML.Light: add versions of the parsers that allow specifying a custom entity map. Exports new functions: parseXMLElementWithEntities, parseXMLContentsWithEntities [API change].
Text.Pandoc.Writers.GridTable: improve module documentation (Albert Krewinkel).
Text.Pandoc.Parsing.GridTable: simplify column handling code (Albert Krewinkel).
Text.Pandoc.MIME: Add mime type for mkv extension (#7181).
Text.Pandoc.Asciify: Fix regression with ascii_identifiers and Turkish undotted i (#8003).
Relax upper bound for hslua, allow hslua-2.2. (#7929) Lua 5.4 is used by default after this is merged. Packagers may still include Lua 5.3 instead by building pandoc with --constraint='hslua <2.2'. Differences between 5.3 and 5.4 should not generally affect pandoc Lua filters. See list of incompatible changes here: https://www.lua.org/manual/5.4/manual.html#8.1
JATS template: allow multiple licenses (Albert Krewinkel).
LaTeX template:
Skip babelprovide if babel-lang is empty (#7945) to avoid an error.
Move hyperref near end of preamble (#5811). It now comes after header-includes and right before title, author, date, abstract. Note: Users who presuppose hyperref in their header-includes will now have to add usepackage{hyperref} to their header-includes to make it available there. (The redundant usepackage will do no harm in this case.)
Remove special redefinition of sout. This used to be necessary to avoid problems with hyperref, when headings contain strikeout text, but it does not seem to be necessary any more (tested).
Tests: improve location reporting of failing tests (Albert Krewinkel).
Add tests for idempotency of makeSections (#7950).
Add armhf support in linux build script (#7944, Tony).
Use latest pandoc-types, so that toJSONFilter will work with Meta and MetaValue.
Use latest doclayout, texmath, commonmark, citeproc.
INSTALL.md: add reference to install via winget (#7951, Guriy Samarin).
MANUAL.txt:
Document way to get list in block quote in slide shows (#7916).
Minor changes to security section.
Note that smart works for html input.
Fix typos (#7934, Dimitris Apostolou).
Fix documentation for citations and org mode.
Remove claim that --self-contained does not work with --mathjax (#682).
doc/org.md: remove obsolete citations section. This mostly described citation formats we no longer support.
doc/lua-filters.md: Fix typo (#7981, Mario Lang).
Makefile: Use cabal for default build
Add lua53 cabal flag. It is false by default. If set to true, compile with hslua 2.1 and Lua 5.3, otherwise hslua 2.2 and Lua 5.4.

New in Pandoc 2.17.1.1 (Jan 31, 2022)

New in Pandoc 2.17.1 (Jan 30, 2022)

Support pagedjs-cli as pdf engine (#7838, Albert Krewinkel). PagedJS is a polyfill and supports the Paged Media standards by the W3C. https://www.pagedjs.org/
CommonMark reader: fix source position after YAML metadata (#7863).
LaTeX reader:
Remove retokenizing in rawLaTeXParser.
Ensure that raggedright doesn’t gobble an argument (#7757).
Improve descItem. For some reason we were skipping arbitrary blocks before item. This is now changed to “skip whitespace and comments.”
Improve handling of newif. Adding a pair of braces around the second argument of def prevents LaTeX from an emergency stop on input like the following (#6096).
Docx reader: Parse both Zotero citation and bibliography as FieldInfo (#7840).
LaTeX writer:
Allow arbitrary frameoptions to be passed to a beamer frame, using the frameoptions attribute (#7869).
Add s and squeeze to recognized beamer frameoptions (#7869).
Markdown writer: handle explicit column widths with pipe tables (#7847). If a table has explicit column width information and the content extends beyond the --columns width, we need to adjust the widths of the pipe separators to encode this width information.
Docx writer: Separate tables even with RawBlocks between (#7224, Michael Hoffmann). Adjacent docx tables need to be separated by an empty paragraph. If there’s a RawBlock between tables which renders to nothing, be sure to still insert the empty paragraph so that they will not collapse together.
Man writer: use custom font V for inline code (#7506). The V font is defined conditionally, so that it renders like CB in output formats that support that, and like B in those that don’t (e.g. the terminal). Aliases also defined for VI, VB, VBI.
Asciidoc writer: Support checklists in asciidoctor writer (#7832, Nikolai Korobeinikov, ricnorr). The checklist syntax (similar to task_list in markdown) seems to be an asciidoctor-only addition.
HTML writer:
Avoid duplicate “style” attributes on table cells (#7871).
Don’t break lines inside code elements. With the new (default) line wrapping of HTML, in conjunction with the default CSS which includes code { whitespace: pre-wrap; }, spurious line breaks could be introduced into inline code (#7858).
Custom writer: preserve order of element attributes (#7489, Albert Krewinkel). Attribute key-value pairs are marshaled as AttributeList, i.e., as a userdata type that behaves both like a list and a map. This allows to preserve the order of key-value pairs.
Switch to hslua-2.1 (Albert Krewinkel). This allows for some code simplification and improves stability.
Don’t read files outside of user data directory (Even Brenden). If a file path does not exist relative to the working directory, and it does exist relative to the user data directory, but outside of of the user data directory, do not read it. This applies to readDataFile and readMetadataFile in PandocMonad and, by extension, any module that uses these by passing them relative paths.
Text.Pandoc.Class.makeCanonical: Correctly handle consecutive “..”s at the beginning of a path (Even Brenden). Prior to this commit, ../../file would evaluate o file, when it should be unchanged.
Search for metadata files in $DATADIR/metadata (#7851, Even Brenden). If files specified with --metadata-file are not found in the working directory, look in $DATADIR/metadata (#5876).
Text.Pandoc.Class: export readMetadataFile [API change] (#5876).
Text.Pandoc.Error: export new PandocCouldNotFindMetadataFileError constructor for PandocError [API change] (#5876).
Avoid putting a frame around speaker notes in beamer (#7857). If speaker notes (a Div with class ‘notes’) occur right after a section heading, but above slide level, the resulting note{..} caommand should not be wrapped in a frame, as that will cause a spurious blank slide.
CSS in HTML template: adjust #TOC and h1 on mobile (#7835, Mauro Bieg).
Text.Pandoc.Readers.LaTeX.Parsing: don’t export totoks. Make the first param of tokenize a SourcePos instead of SourceName, and use it instead of totoks.
Text.Pandoc.Shared: Modify stringify so it ignores [Citation] inside Cite (#7855). Otherwise we’ll sometimes get two copies of things, one from the citationPrefix or citationSuffix and another from the embedded fallback text. When there is no fallback text, we’ll get no content. However, it really isn’t an alternative to just rely on the result of running query on the embedded Citations; this will result in a jumble of text rather than anything structured.
Omit --enable-doc in the cabal haddock invocation in tools/build-and-upload-api-docs.sh.
Text.Pandoc.App.Opt: fix logic bug in fullDefaultsPath. Previously we would (also) search the default user data directory for a defaults file, even if a different user data directory was specified using --data-dir. This was a mistake; if --data-dir is used, the default user data directory should not be searched.
Text.Pandoc.Shared: defaultUserDataDir behavior change (#7842). If the XDG data directory is not defined (e.g. because it’s not supported in the OS or HOME isn’t defined), we return the empty string instead of raising an exception.
Update command tests to distinguish stderr and test exit status.
MANUAL: add that speaker notes can be used with beamer (#7856).
Update build-and-upload-api-docs.sh.
Document --trace option. Document no-check-certificate in defaults files. Document ‘sandbox’ option for defaults files. (#7873).
Fix pattern syntax in sample readability custom reader.
doc/custom-readers.lua: add example for “readable HTML.”
Fix message in man page about where code can be found.
manfilter.lua: remove extra indent in table cells with code blocks.
Fix lua-filters documentation for table column widths (#7864).
epub.doc: Update links to KindleGen (#7846, Benson Muite, Mauro Bieg). KindleGen has been deprecated and we need to link to archived versions.
Use tables in defaults files documentation, so each default option is paired with the corresponding command-line option (Carsten Allefeld).
Use skylighting 0.12.2.
Add pandoc-lua-marshal to Nix shell (#7849, Even Brenden).

New in Pandoc 2.17.0.1 (Jan 15, 2022)

New in Pandoc 2.17 (Jan 13, 2022)

Support markua as an output format (#1871, Tim Wisotzki and Saumel Lemmenmeier). Markua is a markdown variant used by Leanpub.
Add text wrapping for HTML output (#7764). Previously the HTML writer was exceptional in not being sensitive to the --wrap option. With this change --wrap now works for HTML. The default (as with other formats) is automatic wrapping. Note that the contents of script, textarea, and pre tags are always laid out with the flush combinator, so that unwanted spaces won’t be introduced if these occur in an indented context in a template.
Don’t read sources until in/out format are verified (#7797).
Issue error with --list-extensions for invalid formats (#7797).
Make --citeproc recognize .yml as well as .yaml extensions as YAML bibliography files (#7707, Jörn Krenzer).
Use latest version of KaTeX with --katex.
Fix parsing of footnotes in --metadata-file (#7813). Previously non-inline footnotes were not being parsed.
ODT reader:
Parse list-header as a list item (Tuong Nguyen Manh).
Commonmark reader:
Put sourcepos attribute on header, not enclosing div with -f commonmark+sourcepos (#7769).
Markdown reader:
Don’t allow ^ at beginning of link or image label (#7723). This is reserved for footnotes. Fixes regression from 0a93acf.
Fix parsing of “bare locators” after author-in-text citations. Previously @item [p. 12; @item2] was incorrectly parsed as three citations rather than two. This is now fixed by ensuring that prefix doesn’t gobble any semicolons.
Revert changes to inlinesInBalancedBrackets (commit fa83246), which caused regressions.
Improve detection of pipe table line widths (#7713). Fixed calculation of maximum column widths in pipe tables. It is now based on the length of the markdown line, rather than a “stringified” version of the parsed line. This should be more predictable for users. In addition, we take into account double-wide characters such as emojis.
Custom (Lua) readers:
First argument is now a list of sources instead of the concatenated text (Albert Krewinkel). The list structure can easily be converted to a string by applying tostring, but it is also possible to access the elements (each with a text and name). A small example is added to the custom reader documentation, showcasing its use in a reader that creates a syntax-highlighted code block for each source code file passed as input. Existing readers will still work through a fallback mechanism, issuing a deprecation notice.
Org reader:
Parse official org-cite citations (#7329). We also support the older org-ref style as a fallback. We no longer support the “markdown style” or “Berkeley style” citations.
Support alphabetical (fancy) lists (Lucas Viana). When the fancy_lists extension is enabled, alphabetical list markers are allowed, mimicking the behaviour of Org Mode when org-list-allow-alphabetical is enabled.
Support counter cookies in lists (Lucas Viana). Such cookies are used to override the item counter in ordered lists. In org it is possible to set the counter at any list item, but since Pandoc AST does not support this, we restrict the usage to setting an offset for the entire ordered list, by using the cookie in the first list item.
Allow trailing spaces after key/value pairs in directives (Albert Krewinkel). Ensures that spaces at the end of attribute directives like #+ATTR_HTML: :width 100% (note the trailing spaces) are accepted.
LaTeX reader:
Omit visible content for label{...}. Previously we included the text of the label in square brackets, but this is undesirable in many cases. See discussion in #813 (comment).
Improve references (#813). Resolve references to theorem environments. Remove the Span caused by “label” in figure, table, and theorem environments; this had an id that duplicated the environments’ id.
Fix semantics of ref. We were including the ams environment type in addition to the number. This is proper behavior for cref but not for ref. To support cref we need to store the environment label separately.
Add babel mappings for Guajati (gu) and Oriya (or) (#7815).
Fix typo panjabi -> punjabi in babel mappings (#7814).
HTML reader:
Parse attributes on links and images (#6970).
Docx reader:
Handle multiple pic elements inside a drawing (#7786).
Change elemToParPart to return [ParPart] instead of ParPart. Also remove NullParPartconstructor, as it is no longer needed. This will allow us to handle elements that contain multiple ParParts, e.g. w:drawing elements with multiple pic:pic.
DocBook reader:
Collapse internal spaces in literal and other similar tags (#7821), as the standard docbook toolchain does.
Be sensitive to spacing=“compact” in lists (#7799). When spacing="compact" is set, Para elements are turned into Plain, so we get a “tight” list.
Markdown writer:
Add new exported function writeMarkua from Text.Pandoc.Writers.Markdown [API change] (#1871, Tim Wisotzki and Saumel Lemmenmeier).
Fix indentation issue in footnotes (#7801).
Avoid extra space before citation suffix if it already starts with a space.
Ensure semicolon between the locator and the next citation when an author-in-text citation has a locator and following citations.
Improve escaping for # (#7726).
Custom (Lua) writers:
Allow variables to be set via second return value of Doc (#6731, Albert Krewinkel). New templates variables can be added by giving variable-value pairs as a second return value of the global function Doc. Example:
function Doc (body, meta, vars)
vars.date = vars.date or os.date '%B %e, %Y'
return body, vars
end
Provide global PANDOC_WRITER_OPTIONS (#6731, Albert Krewinkel).
Assign default Pandoc object to global PANDOC_DOCUMENT (Albert Krewinkel). The default Pandoc object is now non-strict, i.e., only the parts of the document that are accessed will be marshaled to Lua. A special type is no longer necessary. This change also makes it possible to use the global variable with library functions such as pandoc.utils.references, or to inspect the document contents with walk().
LaTeX writer:
Fix typo panjabi -> punjabi in babel mappings (#7814).
MediaWiki writer:
Remove redundant display text for wiki links (Jesse Hathaway).
Docx writer:
Handle bullets correctly in lists by not reusing numIds (#7689, Michael Hoffmann). This fixes a bug in which a Div in a list item would receive bullets on its contained paragraphs.
Org writer:
Fix list items starting with a code block or other non-paragraph content (#7810).
Avoid blank lines after tight sublists (#7810).
Fix extra blank line inserted after empty list item (#7810).
Don’t add blank line before lists (#7810).
Support starting number cookies (Lucas Viana). This is necessary for lists that start at a number other than 1.
Support the new org-cite syntax (#7329).
Haddock writer:
Avoid blank lines after tight sublists (#7810).
Ipynb writer:
Ensure deterministic order of keys.
Handle cell output with raw block of markdown (#7563, Kolen Cheung). Write RawBlock of markdown in code-cell output. This is designed to fit the behavior of #7561, which makes the ipynb reader parse code-cell output with mime “text/markdown” to a RawBlock of markdown. This commit makes the ipynb writer writes this RawBlock of markdown back inside a code-cell output with the same mime, preserving this information in round-trip.
In choosing between multiple output options, always favor those marked with the output format over images (Kolen Cheung). Previously, both fmt == f case and Image have a rank of 1.
Ipynb reader & writer: properly handle cell “id” (#7728). This is passed through if it exists (in Nb4); otherwise the writer will add a random one so that all cells have an “id”.
Ms writer:
Properly encode strings for PDF contents (#7731).
JATS writer:
Keep quotes in element-citations (Albert Krewinkel). Fixed a bug that lead to quote characters being lost in element-citations.
RTF writer:
Properly handle images in data URIs (#7771).
Commonmark writer:
Allow ‘)’ delimiters on ordered lists.
RST writer:
Avoid extra blank line after empty list item (#7810).
HTML writer:
Make line breaks more consistent. With --wrap=none, we now output line breaks between block-level elements. Previously they were omitted entirely, so the whole document was on one line, unless there were literal line breaks in pre sections. This makes the HTML writer’s behavior more consistent with that of other writers. Also, regardless of wrap settings, put newline after <dd> and after block-level elements in the footnotes section. And add a line break between an img tag and the associated figcaption.
reveal.js: Make sure images with r-stretch are not in p tags. They must be direct children of the section. There was previously code to make this work with the older class name stretch, but the name has changed in reveal.js.
reveal.js: don’t add r-fit-text class to section. It must go on the header only.
AsciiDoc writer:
Improve detection of intraword emphasis (#7803).
OpenDocument writer:
Fix vertical alignment bug with display math (#7777). Previously some displayed formulas would be floated above a preceding text line. This is fixed by setting vertical-rel to text rather than paragraph-content.
JATS template (Albert Krewinkel):
Fix position of contrib affiliations in authoring set. Any <aff> element must come before any <email> element.
Fix affiliation tagging in articleauthoring output. Affiliations were xlinked even in the articleauthoring tag set, but <aff> are not allowed as children of contrib-group elements in that tag set. Each affiliation must be listed directly in the contrib element.
Add support for article subtitles.
EPUB template:
Include abstract in default template.
Ensure that the essential styles needed by pandoc (styles.html partial) are included in the templates. This is important for correct formatting of CSL bibliographies. Note that much of the styling in styles.html will be ignored for EPUB, because of the conditional on document-css. Setting the document-css variable will cause it not to be ignored.
HTML template: Add abstract (#7588, Jannik Buhr, John MacFarlane). By default, a localized title (the word “Abstract”) will be used, unless the variable abstract-title is set.
ConTeXt template: Make title appear in PDF title bar. This is recommended for accessibility reasons. Note: doesn’t work with macOS Preview.app.
reference.pptx: change to use 16:9 aspect ratio, Powerpoint’s default.
Text.Pandoc.Writers:
Do not export writeCustom [API change]. This ensures that all writers exported in T.P.Writers are parameterized and work with any PandocMonad type. This is consistent with T.P.Readers, as readCustom is not exported from that module either.
Text.Pandoc.Writers.Shared:
endsWithPlain now returns True if the list ends with a list that ends with a Plain, and so on recursively (#7810).
Text.Pandoc.Class.IO:
writeMedia: unescape percent-encoding in creating file path. This addresses a problem with spaces in image filenames when creating PDFs (#7819); it also affects --extract-media.
New internal module Text.Pandoc.Writers.Blaze, exporting layoutMarkup. This converts a blaze Html structure into a doclayout Doc Text.
Text.Pandoc.Extensions:
parseFormatSpec: cleaner error message for invalid extensions.
Text.Pandoc.MediaBag:
Fix bug in extractMedia, which caused the test for .. in paths to fail, with the result that images with .. in the path name could be extracted outside of the directory specified by extractMedia. It also led a check for media in resource paths to fail in the docx reader.
Text.Pandoc.Citeproc:
Avoid adding comma before an author-in-text citation in a note if it begins with a title (no author) (#7761).
Text.Pandoc.Citeproc.Locator now exports toLocatorMap, LocatorInfo, and LocatorMap. The type of parseLocator has changed, so it now takes a LocatorMap rather than a Locale as parameter, and returns a LocatorInfo instead of a tuple.
Fix citation locator detection for German. toLocatorMap now stores keys case-folded. We want to do a case-insensitive comparison when parsing locators, so that e.g. both Chap. and chap. work. Previously we case-folded terms when doing the lookup, but they weren’t case-folded in the map itself, which led to locator-detection breaking for German (where the terms have uppercase letters).
Lua (Albert Krewinkel):
Allow single elements as singleton MetaBlocks/MetaInlines. Single elements should always be treated as singleton lists in the Lua subsystem.
Add pandoc.template module. The module provides a compile function to use strings as templates.
Add pandoc.WriterOptions constructor.
Add function pandoc.write.
Provide global PANDOC_WRITER_OPTIONS (#5221).
The function Text.Pandoc.Filter.applyFilters now takes a filter environment of type Environment, instead of a ReaderOptions value [API change].
The Environment type is exported from Text.Pandoc.Filter and allows to combine ReaderOptions and WriterOptions in a single value [API change].
Global, exported from Text.Pandoc.Lua, has a new type constructor PANDOC_WRITER_OPTIONS [API change].
Add constructors pandoc.Blocks and pandoc.Inlines. The functions convert their argument into a list of Block and Inline values, respectively. When applied to a string, they split the string into Str elements separated by Space or SoftBreak (#7712).
Support topdown traversals The traversal order of filters can now be selected by setting the key traverse of the filter to either 'topdown' or 'typewise'; the default remains 'typewise'. Topdown traversals can be cut short by returning false as a second value from the filter function. No child-element of the returned element is processed in that case.
Marshal ReaderOptions field extensions, track_changes via JSON. Extensions are now available as a list of strings; the track-changes settings are given as the kebab-case representation used in JSON.
Allow binary (byte string) readers to be used with pandoc.read.
Use global state when parsing documents in pandoc.read. The function pandoc.read is updated to use the same state that was used while parsing the main input files. This ensures that log messages are preserved and that images embedded in the input are added to the mediabag.
Cleanup stack in peekReadOptionsTable. A ReaderOptions element was left on top of the stack when the peekReadOptionsTable function was invoked.
walk methods are added to Pandoc, Block, Inline, Blocks, Inlines values; the methods are similar to pandoc.utils.walk_block and pandoc.utils.walk_inline, but apply to filter to the element’s contents.
Functions of name Doc are no longer accepted as alternatives for Pandoc filter functions. This functionality was undocumented.
Improve handling of empty caption, body by from_simple_table #7776). Create truly empty table caption and body when these are empty in the simple table.
Change representation of TableHead, TableFoot, and Row values (#7718). The objects now also follow the principle that element attributes are accessible through the .attr field. Rows in TableHead and TableFoot are available via the .rows field. Row objects have a .cells field, containing the list of table cells.
Simplify code of pandoc.utils.stringify. Minor behavior change: plain strings nested in tables are now included in the result string.
Simplify and deprecate function pandoc.utils.equals. The function is no longer required for element comparisons; it is now an alias for the == operator.
Add function pandoc.utils.references (#7752).
Add new library function pandoc.utils.type. The function behaves like the default type function from Lua’s standard library, but is aware of pandoc userdata types. A typical use-case would be to determine the type of a metadata value.
Fix return types of blocks_to_inlines, make_sections. Ensures the returned lists have the correct type (Inlines and Blocks, respectively).
Use more natural representation for Reference values Omit false boolean values, push integers as numbers.
Lua: use package pandoc-lua-marshal (#7719, Albert Krewinkel). The marshaling functions for pandoc’s AST are extracted into a separate package. The package comes with a number of changes:
Pandoc’s List module was rewritten in C, and error messages were improved.
Lists of Block and Inline elements are marshaled using the new list types Blocks and Inlines, respectively. These types currently behave identical to the generic List type, but give better error messages. This also opens up the possibility of adding element-specific methods to these lists in the future.
Elements of type MetaValue are no longer pushed as values which have .t and .tag properties. This was already true for MetaString and MetaBool values, which are still marshaled as Lua strings and booleans, respectively. Affected values:
MetaBlocks values are marshaled as a Blocks list;
MetaInlines values are marshaled as a Inlines list;
MetaList values are marshaled as a generic pandoc Lists.
MetaMap values are marshaled as plain tables and no longer given any metatable.
Cell values are now marshaled as userdata objects; a constructor function for table cells is provided as pandoc.Cell.
The test suite for marshaled objects and their constructors has been extended and improved.
A bug in Citation objects, where setting a citation’s suffix modified it’s prefix, has been fixed.
Inlines, Blocks, and List objects now have an __eq metamethod, testing equality by comparing two lists element-wise.
Powerpoint tests: shorten lines by grouping tests (Albert Krewinkel). This makes the test output more pleasant to read in narrow terminal windows.
make check: check for unreleased dependencies.
Add tools/build-and-upload-api-docs.sh.
Update cabal description.
MANUAL.txt: Add section on EPUB styling.
MANUAL.txt: clarify “standard Markdown” as “original Markdown” (#7802, Martin Fischer).
doc/custom-writers.md: use filter to include source of example.
Add an example to doc/custom-readers.md.
Fix typo in custom-readers.md (#7722, Mauro Bieg).
doc/jats.md: add link to JATS documentation (Martin Fischer).
doc/lua-filters.md: many improvements (Albert Krewinkel, John MacFarlane).
Use commonmark-extensions 0.2.3. This allows a bare-word class attribute on fenced divs.
Use ipynb 0.2.
Use citeproc 0.6.0.1.
Use texmath 0.12.4.
Use doctemplates 0.10.0.1.

New in Pandoc 2.16.2 (Nov 22, 2021)

Add interface for custom readers written in Lua (#7669). Users can now do -f myreader.lua and pandoc will treat the script myreader.lua as a custom reader, which parses an input string to a pandoc AST, using the pandoc module defined for Lua filters. A sample custom reader can be found in data/creole.lua. Also see documentation in doc/custom-readers.md.
New module Text.Pandoc.Readers.Custom, exporting readCustom [API change].
Allow plain to be used in raw attribute syntax.
Accept empty --metadata-file (#7675). This was a regression from 2.15 behavior.
Markdown reader: Improve inlinesInBalancedBrackets. This is just a small improvement in terms of performance, but it’s simpler and more direct code. Also, we avoid parsing interparagraph spaces in balanced brackets, as the original did.
BibTeX reader: Properly handle commented lines in BibTeX/BibLaTeX (#7668).
RST reader: handle class attribute for for custom roles (#7699, willj-dev). Previously the class attribute was ignored, and the name of the role used as the class.
DocBook reader:
Add <titleabbr> support (Rowan Rodrik van der Molen).
Support for <indexterm> (#7607, Rowan Rodrik van der Molen).
LaTeX reader:
Add rudimentary support for autoref (#7693).
Add ‘uri’ class when parsing url, for consistency with treatment of autolinks in other formats (#7672).
JATS reader: Capture alt-text in figures (#7703, Aner Lucero).
MediaWiki writer: use HTML spans for anchors when header has id (#7697). We need to generate a span when the header’s ID doesn’t match the one MediaWiki would generate automatically. Note that MediaWiki’s generation scheme is different from pandoc’s (it uses uppercase letters, and _ instead of -, for example). This means that in going from markdown to mediawiki, we’ll now get spans before almost every heading, unless explicit identifiers are used that correspond to the ones MediaWiki auto-generates. This is uglier output but it’s necessary for internal links to work properly.
Markdown writer: don’t create autolinks when this loses information (#7692). Previously we sometimes lost attributes when rendering links as autolinks.
Text.Pandoc.Readers.Metadata: allow multiple YAML documents when parsing YAML for yamlBsToRefs. Some people use --- as the end delimiter in YAML bibliography files, which causes the yaml library to emit an error unless we explicitly allow multiple YAML documents (and just consider the first).
JATS writer:
Ensure figures are wrapped with <p> in list items (Albert Krewinkel). This prevents the generation of invalid output.
Add URL to element citation entries (Albert Krewinkel). The URL of a reference, if present, is added in tag <uri> to element-citation entries.
HTML writer: Don’t create invalid data- attribute for empty attribute key (#7546).
LaTeX writer:
Babel mappings: use ancientgreek for grc.
With -t latex-smart, don’t generate ldots from ellipsis (#7674). Instead just use unicode ellipsis.
JATS template: fix equal-contrib attribute (Albert Krewinkel). The standard requires the value to be either yes or no, but is was set to true for authors who contributed equally.
reveal.js template: Add disableLayout variable (Christophe Dervieux).
Text.Pandoc.Error: sort errors in handleError by exit code (Albert Krewinkel).
Text.Pandoc.Writers.Shared: Improve toLegacyTable (#7683, Christian Despres).
Lua subsystem:
Include lpeg module (#7649, Albert Krewinkel). Compiles the lpeg library (Parsing Expression Grammars For Lua) into the program. Package maintainers may choose to rely on package dependencies to make lpeg available, in which case they can compile the with the constraint lpeg +rely-on-shared-lpeg-library. lpeg and re are always made available in global variables, without the need for a require.
Set lpeg and re as globals; allow shared lib access via require. The lpeg and re modules are loaded into globals of the respective name, but they are not necessarily registered as loaded packages. This ensures that
the built-in library versions are preferred when setting the globals,
a shared library is used if pandoc has been compiled without lpeg, and
the require mechanism can be used to load the shared library if available, falling back to the internal version if possible and necessary.
Fix argument order in constructor pandoc.Cite (Albert Krewinkel). This restores the old behavior; argument order had been switched accidentally in pandoc 2.15.
Add Pushable instance for ReaderOptions (Albert Krewinkel).
Allow to pass custom reader options to pandoc.read as an optional third argument (#7656, Albert Krewinkel). The object can either be a table or a ReaderOptions value like PANDOC_READER_OPTIONS. Creating new ReaderOptions objects is possible through the new constructor pandoc.ReaderOptions.
Display Pandoc values using their native Haskell representation (Albert Krewinkel).
Require latest hslua (2.0.1) (#7661, #7657, Albert Krewinkel). This fixes issues with
misleading error messages when a required function parameter is omitted;
absent properties still being listed in the output of pairs; and
alias accessing leading to errors instead of returning nil, e.g. with (pandoc.Str '').identifier.
Add missing space in “package not found” message (#7658, Albert Krewinkel).
Update build files (#7696, Fabián Heredia Montiel). Drop old windows 32-bit constraints. Update cabal tested-with field to correspond to ci.yml matrix
Remove unneeded package dependencies from benchmark target.
Require ghc >= 8.6, base >= 4.12. This allows us to get rid of the old custom prelude and some crufty cpp. But the primary reason for this is that conduit has bumped its base lower bound to 4.12, making it impossible for us to support lower base versions.
Require Cabal 2.4. Use wildcards to ensure that all pptx tests are included (#7677).
Update bash_completion.tpl (S.P.H.).
Add data/creole.lua as sample custom reader.
Add doc/custom-readers.md and doc/custom-writers.md.
doc/lua-filters.md: add section on global modules, including lpeg (Albert Krewinkel).
MANUAL.txt: update table of exit codes and corresponding errors (Albert Krewinkel).
Use latest texmath.

New in Pandoc 2.16.1 (Nov 3, 2021)

New in Pandoc 2.16 (Nov 1, 2021)

Switch back from HsYAML to yaml for parsing YAML metadata (#6084). HsYAML is around 20 times slower in parsing large YAML bibliographies. In addition, HsYAML is not being actively maintained. This sets us back in our attempts to free ourselves from C dependencies (#4535). But I don’t see a good alternative until a faster pure Haskell parser is available. Notes:
We’ve removed the FromYAML instances for all types that had them, since this is a HsYAML-specific typeclass [API change]. (The yaml package just uses From/ToJSON instead of having a dedicated From/ToYAML class.)
Unlike HsYAML (in the configuration we were using), yaml parses ‘Y’, ‘N’, ‘Yes’, ‘No’, ‘On’, ‘Off’ as boolean values. Users may need to quote these when they are meant to be interpreted as strings. Similarly, ‘null’ is parsed as a YAML null value (and will be treated as an empty string by pandoc rather than the string ‘null’). Quoting it will force it to be interpreted as a string.
Some tests had to be adjusted accordingly.
Pandoc now behaves in a more useful way when the YAML metadata contains escaping errors: instead of just failng silently and falling back to some other interpretation of the section, it raises a YAML parsing error.
Markdown writer: Ensure that special values are quoted in YAML metadata. These include “Y”, “yes”, “on”, and “off”, which are now (with yaml library) considered boolean values, as well as “null”.
Change JSON encodings of some types.
For LineEnding use lowercase constructors, e.g. crlf, native.
For HTMLSlideVariant use lowercase constructors.
For ReaderOptions use e.g. default-image-extension instead of readerDefaultImageExtension for field names.
For Extension, use e.g. tex_math_dollars instead of Ext_tex_math_dollars as constructor.
For Extensions, use an array of Extensions, instead of an object wrapping the tag Extensions and an integer. (The integer representation is not supposed to be part of the public API.)
For Opt, use field names like tab-stop instead of optTabStop.
Docx writer:
Add IDs to native_numbering test (Tristan Stenner).
Move “:” out of the caption bookmark (Tristan Stenner). This is needed so that native references to the figure are included as “As seen in Figure X, it is…” instead of “As seen in [Figure: X, it is…”
Lua (Albert Krewinkel, except as noted):
Use hslua module abstraction where possible.
Fix placement of tests for Block elements in pandoc module tests
Increase strictness when getting attribute keys
Re-add t and tag property to Attr values. Removal of these properties from Attr values was a regression.
Fix pandoc.utils.stringify regression. The pandoc.utils.stringify function returned empty strings when called with a string argument.
Fix a copy/paste bug in Lua marshalling code (John MacFarlane, #7639). This caused links to be changed to figures when Lua filters changed link properties.
Re-add content property to Link elements (#7647). This was a regression introduced in version 2.15.
Generate constants in module pandoc programmatically.
Marshal SimpleTable, ListAttributes, Citation, and Block values as userdata objects. Properties of Block values are marshalled lazily, which generally improves performance considerably. Script users may also notice the following differences:
Block element properties can no longer be accessed by numerical indexing of the .c field. The .c property now serves as an alias for .content, so some filter that used this undocumented method for property access may continue to work, while others will need to be updated and use proper property names.
The marshalled Block elements now have a show method, and a __tostring metamethod. Both return the Haskell string representation of the element.
Block values now have the Lua type userdata instead of table.
Add a short guide to pandoc’s sources (Albert Krewinkel).
Fix epub files in epub reader tests, so that they are valid according to epubcheck (#7586).
Allow time 1.13.
Require latest skylighting (0.12.1).
Fix build on GHC 9.2 (Joseph C. Sible).
Fix trypandoc so it builds with aeson > 2.

New in Pandoc 2.15 (Oct 24, 2021)

Add --sandbox option (#5045):
Add sandbox feature. When this option is used, readers and writers only have access to input files (and other files specified directly on command line). This restriction is enforced in the type system.
Filters, PDF production, custom writers are unaffected. This feature only insulates the actual readers and writers, not the pipeline around them in Text.Pandoc.App.
Note that when --sandboxed is specified, readers won’t have access to the resource path, nor will anything have access to the user data directory.
--self-contained: Fix bug that caused everything to be made a data URI (#7635, #7367). We only need to use data URIs in certain cases, but due to a bug they were being used always.
Pandoc will now fall back to latin1 encoding for inputs that can’t be read as UTF-8. This is what it did previously for content fetched from the web and not marked as to content type. It makes sense to do the same for local files. In this case a NotUTF8Encoded warning will be issued, indicating that pandoc is interpreting the input as latin1.
Markdown reader:
Don’t parse links or bracketed spans as citations (#7632). Previously pandoc would parse [link to (@a)](url) as a citation; similarly [(@a)]{#ident}. This is undesirable. One should be able to use example references in citations, and even if @a is not defined as an example reference, [@a](url) should be a link containing an author-in-text citation rather than a normal citation followed by literal (url).
Fix interaction of --strip-comments and list parsing (#7521). Use of --strip-comments was causing tight lists to be rendered as loose (as if the comment were a blank line).
Fix parsing bug for math in bracketed spans and links (#7623). This affects math with unbalanced brackets (e.g. $(0,1]$) inside links, images, bracketed spans.
Fix code blocks using --preserve-tabs (#7573). Previously they did not behave as the equivalent input with spaces would.
DocBook reader:
Honor linenumbering attribute (Samuel Tardieu). The attribute DocBook linenumbering="numbered" on code blocks maps to the numberLines class internally.
LaTeX reader:
Implement siunitx v3 commands (#7614). We support unit, qty, qtyrange, and qtylist as synonynms of si, SI, SIrange, and SIlist.
Properly handle ^ followed by group closing (#7615).
Recognize that vadjust sometimes takes “pre” (#7531).
Ignore (and gobble parameters of) CSLReferences environment (#7531). Otherwise we get the parameters as numbers in the output.
Restrict endinput to current file (Simun Schuster).
RST reader: handle escaped colons in reference definitions (#7568).
HTML reader:
Handle empty tbody element in table (#7589).
Ipynb reader (Kolen Cheung):
Get cell output mime from raw_mimetype in addition to format. (format is what the spec calls for, but raw_mimetype is often used in practice; see jupyter/nbformat#229).
Add more formats that can be handled as “raw” cells.
Fix mime type for rst.
Support text/markdown, which is now a supported mime type for raw output (#7561).
RTF reader:
Support binN for binary image data.
If doc begins with { … } only parse its contents. Some documents seem to have non-RTF (e.g. XML) material after the {rtf1 ... } group.
Ignore pgdsc group. Otherwise we get style names treated as test.
Better handling of * and bookmarks. We now ensure that groups starting with * never cause text to be added to the document. In addition, bookmarks now create a span between the start and end of the bookmark, rather than an empty span.
Docx reader:
Avoid blockquote when parent style has more indent (Milan Bracke). When a paragraph has an indentation different from the parent (named) style, it used to be considered a blockquote. But this only makes sense when the paragraph has more indentation. So this commit adds a check for the indentation of the parent style.
Fix handling of empty fields (Milan Bracke). Some fields only have an instrText and no content, Pandoc didn’t understand these, causing other fields to be misunderstood because it seemed like a field was still open when it wasn’t.
Implement PAGEREF fields (Milan Bracke). These fields, often used in tables of contents, can be a hyperlink.
Fix handling of nested fields (Milan Bracke). Fields delimited by fldChar elements can contain other fields. Before, the nested fields would be ignored, except for the end, which would be considered the end of the parent field.
Add placeholder for word diagram instead of just omitting it (Ezwal).
Org reader:
Don’t parse a list as first item in a list item (#7557).
Allow an initial :PROPERTIES: drawer to add to metadata (#7520).
Docx writer:
Make id used in native_numbering predictable (#7551). If the image has the id IMAGEID, then we use the id ref_IMAGEID for the figure number. This allows one to create a filter that adds a figure number with figure name, e.g. <w:fldSimple w:instr=" REF ref_superfig "><w:r><w:t>Figure X</w:t> </w:r></w:fldSimple>. If an image lack an id, an id of the form ref_fig1 is used.
Ensure we have unique ids for wp:docPr and pic:cNvPr elements (#7527, #7503).
Handle SVG images (#4058). This change has several parts:
In Text.Pandoc.App, if the writer is docx, we fill the media bag and attempt to convert any SVG images to PNG, adding these to the media bag. The PNG backups have the same filenames as the SVG images, but with an added .png extension. If the conversion cannot be done (e.g. because rsvg-convert is not present), a warning is omitted.
In Text.Pandoc.Writers.Docx, we now use Word 2016’s syntax for including SVG images. If a PNG fallback is present in the media bag, we include a link to that too.
Powerpoint writer (Emily Bourke):
Add support for more layouts (#5097). Up til now, four layouts were supported: “Title Slide” (used for the automatically generated metadata slide), “Section Header” (used for headings above slide level), “Two Column” (used when there’s a columns div), “Title and Content” (used for all other slides). We now support three additional layouts: “Comparison”, “Content with Caption”, and “Blank”. The manual describes the logic that determines which layout is used for a slide. Layouts may be customized in the reference doc.
Support specifying slide background images using a background-image attribute on the slide’s heading. Only the “stretch” mode is supported, and the background image is centred around the slide in the image’s larger axis, matching the observed default behaviour of PowerPoint.
Add support for incremental lists (through same methods as in other slide writers) (#5689).
Copy embedded fonts from reference doc.
Include all themes in output archive.
Fix list level numbering (#4828, #4663). In PowerPoint, the content of a top-level list is at the same level as the content of a top-level paragraph: the only difference is that a list style has been applied. Previously, the writer incremented the paragrap h level on each list, turning what should be top-level lists into second-level lists.
Line up list continuation paragraphs. This commit changes the marL and indent values used for plain paragraphs and numbered lists, and changes the spacing defined in the reference doc master for bulleted lists. For paragraphs, there is now a left-indent taken from the otherStyle in the master. For numbered lists, the number is positioned where the text would be if this were a plain paragraph, and the text is indented to the next level. This means that continuation paragraphs line up nicely with numbered lists. Existing reference docs may need to be modified so that otherStyle and bodyStyle indent levels match, for this feature to work with them.
Consolidate text runs when possible (jgm). This slims down the output files by avoiding unnecessary text run elements.
Support footers in the reference doc. There is one behaviour which may not be immediately obvious: if the reference doc specifies a fixed date (i.e. not automatically updating), and there’s a date specified in the metadata for the document, the footer date is replaced by the metadata date.
Fix presentation rel numbering. Before now, the numbering of rIds was inconsistent when making the presentation XML and when making the presentation relationships XML.
Don’t add relationships unnecessarily. Before now, for any layouts added to the output from the default reference doc, the relationships were unconditionally added to the output. However, if there was already a layout in slideMaster1 at the same index then that results in duplicate relationships.
If slide level is 0, don’t insert a slide break between a heading and a following table, “columns” div, or paragraph starting with an image.
Fix capitalisation of notesMasterId.
Restructure tests.
Asciidoc writer:
Translate numberLines attribute to linesnum switch (Samuel Tardieu).
Improve escaping for -- in URLs (#7529).
LaTeX writer:
Make babel use more idiomatic (#7604, hseg). Use babel’s bidi implementation. Import babel languages individually instead of as package options. Move header-includes to after babel setup so it can be modified.
Use babel, not polyglossia, with xelatex. Previously polyglossia worked better with xelatex, but that is no longer the case, so we simplify the code so that babel is used with all latex engines. This involves a change to the default LaTeX template.
Markdown writer:
Avoid bad wraps at the Doc Text level. Previously we tried to do this at the Inline list level, but it makes more sense to intervene on breaking spaces at the Doc Text level.
Use underline class rather than ul for underline. This only affects output with bracketed_spans enabled. The markdown reader parses spans with either .ul or .underline as Underline elements, but we’re moving towards preferring the latter.
RST writer:
Properly handle anchors to ids with spaces or leading underscore (#7593). In this cases we need the quoted form, e.g.
.. _`foo bar`:
.. _`_foo`:
Side note: rST will “normalize” these identifiers anyway, ignoring the underscore.
HTML writer:
Render ref and eqref as inline math, not display (see #7589).
Pass through ref and eqref if MathJax is used (#7587).
Pass through inline math environments with KaTeX.
Support --reference-location for HTML output (#7461, Francesco Mazzoli).
Set “hash” to True by default (for reveal.js) (#7574). See #6968 where the motivation for setting “hash” to True is explained.
Native writer: Use pretty-show to format native output (#7580). Previously we used our own homespun formatting. But this produces over-long lines that aren’t ideal for diffs in tests. Performance is slower by about a factor of 10, but this isn’t really a problem because native isn’t suitable as a serialization format. (For serialization you should use json, because the reader is so much faster than native.)
Org writer:
Don’t indent contents of code blocks. We previously indented them by two spaces, following a common convention. Since the convention is fading, and the indentation is inconvenient for copy/paste, we are discontinuing this practice.
Update list of supported source languages in org writer (#5440).
Ipynb writer (Kolen Cheung):
Improve round trip identity for raw cell output. See jupyter/nbformat#229. The Jupyter ecosystem, including nbconvert, lab and notebook, deviated from their own spec in nbformat, where they used the key raw_mimetype instead of format. Moreover, the mime-type of rst used in Jupyter deviated from that suggested by https://docutils.sourceforge.io/FAQ.html and is defined as text/restructuredtext when chosen from “Raw NBConvert Format” in Jupyter. The new behavior should matche the real world usage better, hence improving the round-trip “identity” in raw-cell.
Add more formats that can be handled as “raw” cells.
EPUB writer:
Add EPUB3 subject metadata (authority/term) (nuew). This adds the ability to specify EPUB 3 authority and term specific refinements to the subject tag. Specifying a plain subject tag in metadata will function as before.
Treat epub:type “frontispiece” as front matter (#7600).
reveal.js template: Fix line numbers in source code (#7634). We need overflow: visible for these to work, and reveal’s default css disables this. So we re-enable it in the default template.
Text.Pandoc.Writers.Shared:
Export splitSentences as a Doc Text transform [API change]. Use this in man/ms. We used to attempt automatic sentence splitting in man and ms output, since sentence-ending periods need to be followed by two spaces or a newline in these formats. But it’s difficult to do this reliably at the level of [Inline].
Text.Pandoc.Translations: small revisions for compatibility with aeson 2.
Don’t prepend file:// to --syntax-definition on Windows (#6374). This was a fix for a problem in skylighting, but this problem doesn’t exist now that we’ve moved from HXT to xml-conduit.
Text.Pandoc.Extensions:
Add Ext_footnotes to default gfm etxensions. Now gfm supports footnotes.
Alphabetize Extension constructors (also affects --list-extensions).
Text.Pandoc.Citeproc.Util: Better implementation of splitStrWhen. Previously the citeproc code had two less efficient implementations.
Update documentation for definition_list extension (#7594). In 2015, we relaxed indentation requirements for the first line of a definition (see commit d3544dc and issue #2087), but the documnentation wasn’t updated to reflect the change.
Text.Pandoc.Citeproc.BibTeX: Fix expansion of special strings in series e.g. newseries or library (#7591). Expansion should not happen when these strings are protected in braces, or when they’re capitalized.
Text.Pandoc.Logging: add NotUTF8Encoded constructor to LogMessage [API change].
Text.Pandoc.App.FormatHeuristics: remove .tei.xml extension for TEI (#7630). This never worked, because takeExtension only returns .xml. So it won’t be missed if we remove it.
Text.Pandoc.Image:
Generalize svgToPng to MonadIO.
svgToPng, change first parameter from WriterOptions to Int.
Text.Pandoc.Class:
Add readStdinStrict method to PandocMonad [API change].
Generalize type of extractMedia [API change]. It was uselessly restricted to PandocIO, instead of any instance of PandocMonad and MonadIO.
Text.Pandoc.Class.PandocIO: derive MonadCatch, MonadThrow, MonadMask. This allows us to use withTempDir [API change].
Add module Text.Pandoc.Class.Sandbox, defining sandbox. Exported via Text.Pandoc.Class. [API change]
Text.Pandoc.Filter: Generalize type of applyFilters from PandocIO to any instance of MonadIO and PandocMonad [API change].
Text.Pandoc.PDF: generalize type of makePDF: instead of PandocIO, it can be used in any instance of PandocMonad, MonadIO, and MonadMask [API change].
Lua subsystem and custom writers: generalize types from PandocIO to any instance of PandocMonad and MonadIO [API change]. The type of runLua is now
(PandocMonad m, MonadIO m) =>
LuaE PandocError a -> m (Either PandocError a)
The change from Lua to LuaE PandocError is due to the switch to hslua-2.0; see next item.
Lua modules (Albert Krewinkel):
Switch to hslua-2.0. The new HsLua version takes a somewhat different approach to marshalling and unmarshalling, relying less on typeclasses and more on specialized types. This allows for better performance and improved error messages. Furthermore, new abstractions allow to document the code and exposed functions.
Marshal Version values, Inline elements, Attr elements, and Pandoc elements as userdata.
Remove deprecated inline constructors DoubleQuoted, SingleQuoted, DisplayMath, and InlineMath.
Attr values are no longer normalized when assigned to an Inline element property.
It’s no longer possible to access parts of Inline elements via numerical indexes. E.g., pandoc.Span('test')[2] used to give pandoc.Str 'test', but yields nil now. This was undocumented behavior not intended to be used in user scripts. Use named properties instead.
Accessing .c to get a JSON-like tuple of all components no longer works. This was undocumented behavior.
Only known properties can be set on an element value. Trying to set a different property will now raise an error.
Adds a new pandoc.AttributeList() constructor, which creates the associative attribute list that is used as the third component of Attr values. Values of this type can often be passed to constructors instead of Attr values.
Convert IOErrors to PandocErrors in pandoc.pipe function (#7523).
Text.Pandoc.PDF: Previously we had to run runIOorExplode inside withTempDir. Now that PandocIO is an instance of MonadMask, this is no longer necessary.
Text.Pandoc.App:
Reorganize to make it easier to limit IO in main loop. Previously we used liftIO fairly liberally. The code has been restructured to avoid this.
Move output-file writing out of PandocMonad action.
Text.Pandoc.App.OutputSettings: Generalize some types so we can run this with any instance of PandocMonad and MonadIO, not just PandocIO.
Use simpleFigure builder in readers and SimpleFigure pattern synonym in writers (Aner Lucero).
Allow time 1.12.
Use skylighting-0.12, skylighting-core-0.12. This fixes highlighting issues with typescript, scala, and other syntaxes that include keyword lists from different syntaxes.
Use citeproc 0.6, commonmark 0.2.2.1, commonmark-extensions 0.2.2, texmath 0.12.3.2, ipynb 0.1.0.2. (These changes also allow building with aeson >= 2.)
Require doclayout >= 0.3.1.1. This fixes recognition of “real widths” of emoji characters, which is important for tabular layout.
Cut out over 100K of fat in epub test golden files.
Make test/epub/wasteland.epub valid.
Add missing % on some command tests. This prevented --accept from working properly.
Command tests: raise error if command doesn’t begin with %.
OOXML tests: use pretty-printed form to display diffs. Otherwise everything is on one line and the diff is uninformative.
Fix compareXML helper in Tests.Writers.OOXML. Given how it is used, we were getting “mine” and “good” flipped in the test results.
MANUAL.txt:
Clarify attributes extension support (William Lupton).
Document formats affected by --reference-location.
Document error code 25
Add some more info regarding --slide-level=0 (Salim B).
Add more to security section of manual.
Mention support of title-toc (#7171, Christophe Dervieux).
doc/lua-filters.md:
Add missing type for Image title (Quinn).
Improve order of Image fields (Quinn).
Rephrase pandoc.path docs (#7548, Quinn).
Do not leak working directory in TikZ filter (Jeroen de Haas).

New in Pandoc 2.14.2 (Aug 21, 2021)

Allow --slide-level=0 (#7476). When the slide level is set to 0, headings won’t be used at all in splitting the document into slides. Horizontal rules must be used to separate slides.
Add RTF reader (#3982). rtf is now supported as an input format as well as an output format. New module Text.Pandoc.Readers.RTF (exporting readRTF). [API change]
HTML reader: treat comments as blank when parsing (#7482).
Markdown reader:
Fix raw LaTeX injection issue (#7497). Using a code block containing end{verbatim}, one could inject raw TeX into a LaTeX document even when raw_tex is disabled. Thanks to Augustin Laville for noticing the bug.
Multimarkdown sub- and superscripts (#5512, OCzarnecki). Added an extension short_subsuperscripts which modifies the behavior of subscript and superscript, allowing subscripts or superscripts containing only alphanumerics to end with a space character (eg. x^2 = 4 or H~2 is combustible). This improves support for multimarkdown.
RST reader: Fix :literal: includes (#7513). These should create code blocks, not insert raw RST.
LaTeX reader:
Proper implicit grouping around environment macros.
Support global before def, let, etc. (#7494).
Fix scope for LaTeX macros (#7494). They should by default scope over the group in which they are defined (except gdef and xdef, which are global). In addition, environments must be treated as groups.
Improve handling of plain TeX macro primitives (#7474). Fixed semantics for let.
Implement edef, gdef, and xdef.
Docx reader: Improve docx reader’s robustness in extracting images (#7511). The docx reader made some assumptions about how docx containers were laid out that were not always true, with the result that some images in documents did not get extracted.
LaTeX writer: Increase table column width precision (#7466, Peter Fabinski). In some cases, the rounding performed by the LaTeX table writer would introduce visible overrun outside the text area. This adds two more decimal places to the width values.
Powerpoint writer:
Include image title in description (#7352, Emily Bourke). The image title (i.e. ![alt text](link "title")) was previously ignored when writing to pptx. This commit includes it in PowerPoint’s description of the image, along with the link.
Select layouts from reference doc by name (Emily Bourke). Until now, users had to make sure that their reference doc contains layouts in a specific order: the first four layouts in the file had to have a specific structure. Now the layout selection uses the layout names rather than order: users must make sure their reference doc contains four layouts with specific names, and if a layout with the right name isn’t found pandoc will emit a warning and use the corresponding layout from the default reference doc as a fallback.
Docx writer: be sensitive to the native_numbering extension (#7499). Figure and table numbers are now only included if native_numbering is enabled. (By default it is disabled.) This is a behavior change with respect to 2.14.1, but the default behavior is now that of previous versions. The change was necessary to avoid incompatibilities between pandoc’s native numbering and third-party cross reference filters like pandoc-crossref.
RTF writer:
Omit bin in pict. According to the spec, this is not needed or wanted when the data is in hexadecimal format, as here.
Emit ``` for section headings.
RTF template: specify font family for fixed-width font f1. According to the spec, this is mandatory.
LaTeX writer: Use ulem for underline (#7351). ulem is conditionally included already when the strikeout variable is set, so we set this when there is underlined text, and use uline instead of underline. This fixes wrapping for underlined text.
Text.Pandoc.Citeproc:
Revise citeproc code to fit new citeproc 0.5 API (thanks to Benjamin Bray). Linkification of URLs in the bibliography is now done in the citeproc library, depending on the setting of an option. We set that option depending on the value of the metadata field link-bibliography (defaulting to true, for consistency with earlier behavior). If a DOI, PMID, PMCID, or URL field is present but not explicitly rendered, the title (or if no title, the whole entry) is hyperlinked. These changes implement the recommendations from the draft CSL v1.0.2 spec (Appendix VI): https://github.com/citation-style-language/documentation/blob/master/specification.rst#appendix-vi-links
Avoid odd handling of quotes. Recent citeproc changes allow us to ignore Quoted elements; citeproc now uses its own method for represented quoted things, and only localizes and flipflops quotes it adds itself. Convert Quoted in bib entries to special Spans before passing them off to citeproc. This ensures that we get proper localization and flipflopping if, e.g., quotes are used in titles (jgm/citeproc#87).
Removed quote localization from citeproc processing. This is now done in citeproc itself.
Text.Pandoc.Logging: Add PowerpointTemplateWarning log message type [API change] (Emily Bourke).
Text.Pandoc.Extension: Add Ext_short_subsuperscripts constructor to Extension [API change] (OCzarnecki).
Various sample.lua editorial fixes (#7493, #7487, William Lupton).
Bump base-compat version so we get compatibility with base 4.12.
Use Prelude from base-compat for ghc 8.4 too.
Add haskell-language-server to shell.nix (#7496, Emily Bourke).
Tests.Helpers: export testGolden and use it in RTF reader. This gives a diff output on failure.
Remove obsolete and incorrect sentence in --slide-level docs.
Add internal module Text.Pandoc.Network.HTTP, exporting urlEncode.
Text.Pandoc.Parsing: parseFromString: preserve at least the source directory (#7464). Previously we just set the source name to “chunk” when parsing from strings, to avoid misleading source positions. This had the side effect that rebase_relative_paths would break inside sections that were parsed as strings. So, now we use “ORIGINAL_SOURCE_PATH_chunk” instead of just “chunk”.
Text.Pandoc.MIME: use image/x-xcf instead of application/x-xcf (#7454).
Don’t compare cdLine in OOXML golden tests (Emily Bourke). The cdLine field gives the line of the file some CData was found on, which reflects irrelevant formatting differences.
Provide more detailed XML diff in tests (Emily Bourke).
OOXML tests: silence warnings. These can make the test output confusing, making people think tests are failing when they’re passing.
INSTALL.md: Add GitLab CI/CD example (#7448, Veratyr).
MANUAL.txt
Clarifications (William Lupton).
Add a note on security risks of include directives.
Document use of the ‘underline’ class (#7492, #7484, William Lupton).
Add a FAQ about the “Cannot allocate memory” error on M1 macs.
Use texmath 0.12.3.1.
Use released citeproc 0.5.
Remove dependency on HTTP package (#7456, mt_caret).

New in Pandoc 2.14.1 (Jul 19, 2021)

Text.Pandoc.ImageSize: Add Tiff constructor for ImageType (#7405) [Minor API change]. This allows pandoc to get size information from tiff images.
Markdown reader: don’t try to read contents in self-closing HTML tag. Previously we had problems parsing raw HTML with self-closing tags like <col/>. The problem was that pandoc would look for a closing tag to close the markdown contents, but the closing tag had, in effect, already been parsed by htmlTag.
RST reader: fix regression with code includes (#7436). With the recent changes to include infrastructure, included code blocks were getting an extra newline.
Markdown writer: put space between Plain and following fenced Div (#4465).
Text.Pandoc.Class: Always use / when adding directory to image destination with extractMedia, even on Windows.
Use citeproc 0.10. This helps improve note citations (see above) and eliminates double hyperlinks in author-in-text citations. Author-only citations are no longer hyperlinked. See jgm/citeproc#77. It also fixes moving of punctuation inside quotes to conform to the CSL spec: only comma and period are moved, not question mark or exclamation point.
Text.Pandoc.Error: fix line calculations in reporting parsec errors. Also remove a spurious initial newline in the error report.
Use doctemplates 0.4.1, which gives us better support for boolean variable values. Previously $if(foo)$ would evaluate to true for variables with boolean false values, because it cared only about the string rendering (#7402).
Require commonmark-pandoc >= 0.2.2.1. This fixes task lists with multiple paragraphs.
Use skylighting 0.11.
CSS in HTML template: reset overflow-wrap on code blocks (Mauro Bieg, #7423).
LaTeX template: Revert change in PR #7295: “move title, author, date up to top of preamble.” The change caused problem for people who used LaTeX commands defined defined later in the preamble in the title or author fields (#7422).
Add doc/faqs.md. This is imported from the website; in the future the website version will be drawn from here. Added a FAQ on the use of AtEndPreamble for cases when the contents of header-includes need to refer to definitions that come later in the preamble. See #7422.
Upgrade Debian 10 AMI for build-arm.sh.
CircleCI: change to using xcode 11.1.0 (macOS 10.14.4). We previously built on 10.13, but 10.13 no longer gets security updates and CirclCI is deprecating.
EPUB writer: Don’t incorporate externally linked images in EPUB documents (#7430, Michael Hoffmann). Just as it is possible to avoid incorporating an image in EPUB by passing data-external="1" to a raw HTML snippet, this makes the same possible for native Images, by looking for an associated external attribute.
LaTeX reader:
Avoid trailing hyphen in translating languages (#7447). Previously foreignlanguage{english} turned into <span lang="en-">. The same issue affected Arabic.
Support cline in LaTeX tables (#7442).
Improved parsing of raw LaTeX from Text streams (rawLaTeXParser, used to read LaTeX in Markdown files, #7434). We now use source positions from the token stream to tell us how much of the text stream to consume. Getting this to work required a few other changes to make token source positions accurate.
DocBook reader:
Handle images with imageobjectco elements (#7440).
Add support for citerefentry (#7437, Jan Tojnar).
HTML reader:
Recognize data-external when reading HTML img tags (#7429, Michael Hoffmann). Preserve all attributes in img tags. If attributes have a data- prefix, it will be stripped. In particular, this preserves a data-external attribute as an external attribute in the pandoc AST.
Add col, colgroup to ‘closes’ definitions
HTML writer:
Remove duplicated alt text in HTML output (Aner Lucero).
Remove aria-hidden when explicit alt text is provided (Aner Lucero).
Set boolean values for reveal.js variables.
Docx writer:
Add table numbering for captioned tables. The numbers are added using fields, so that Word can create a list of tables that will update automatically.
Support figure numbers. These are set up in such a way that they will work with Word’s automatic table of figures (#7392).
Text.Pandoc.PDF:
Fix svgIn path error (#7431). We were duplicating the temp directory; this didn’t cause problems on macOS or linux because there we use absolute paths for the temp directory. But on Windows it caused errors converting SVG files.
convertImage: normalize paths (#7431). This will avoid paths on Windows with mixed path separators.
Text.Pandoc.Citeproc:
Allow $ characters in bibtex keys (#7409).
Set proper initial source name in parsing BibTeX (for better error messages.)
Revamp note citation handling (#7394). Use latest citeproc, which uses a Span with a class rather than a Note for notes. This helps us distinguish between user notes and citation notes. Don’t put citations at the beginning of a note in parentheses. Fix small bug in handling of citations in notes, which led to commas at the end of sentences in some cases.
Cleanup and efficiency improvement in deNote.
Improve punctuation moving with --citeproc. Previously, using --citeproc could cause punctuation to move in quotes even when there aer no citations. This has been changed; punctuation moving is now limited to citations. In addition, we only move footnotes around punctuation if the style is a note style, even if notes-after-punctuation is true.

New in Pandoc 2.14.0.3 (Jun 23, 2021)

New in Pandoc 2.14.0.2 (Jun 13, 2021)

Fix MediaBag regressions (#7345). iIn the 2.14 release --extract-media stopped working as before; there could be mismatches between the paths in the rendered document and the extracted media. This patch makes several changes that restore the earlier behavior (while keeping the same API). The mediaPath in 2.14 was always constructed from the SHA1 hash of the media contents. Now, we preserve the original path unless it’s an absolute path or contains .. segments (in that case we use a path based on the SHA1 hash of the contents).
In Text.Pandoc.MediaBag, mediaDirectory and mediaItems now use the mediaPath, rather than the mediabag key, for the first component of the tuple. This makes more sense, I think, and fits with the documentation of these functions; eventually, though, we should rework the API so that mediaItems returns both the keys and the MediaItems.
In Text.Pandoc.Class.IO, rewriting of source paths in extractMedia has been fixed.
In Text.Pandoc.Class.PandocMonad, fillMediaBag has been modified so that it doesn’t modify image paths (that was part of the problem in #7345).
We now do path normalization (e.g. separators on Windows) in writing the media.
Text.Pandoc.PDF:
Text.Pandoc.PDF: Fix regression in 2.14 for generation of PDFs with SVGs (#7344).
Only print relevant part of environment on --verbose. Since --verbose output might be put in an issue, we want to avoid spilling out secrets in environment variables.
Markdown reader: fix pipe table regression in 2.11.4 (#7343). Previously pipe tables with empty headers (that is, a header line with all empty cells) would be rendered as headerless tables. This broke in 2.11.4. The fix here is to produce an AST with an empty table head when a pipe table has all empty header cells.
LaTeX reader: don’t allow optional * on symbol control sequences (#7340). Generally we allow optional starred variants of LaTeX commands (since many allow them, and if we don’t accept these explicitly, ignoring the star usually gives acceptable results). But we don’t want to do this for (*) and similar cases.
Docx reader: handle absolute URIs in Relationship Target (#7374).
Docx writer: fix handling of empty table headers (Albert Krewinkel, #7369). A table header which does not contain any cells is now treated as an empty header.
LaTeX writer: Fix regression in table header position (#7347). In recent versions the table headers were no longer bottom-aligned (if more than one line). This patch fixes that by using minipages for table headers in non-simple tables.
CommonMark writer:
Do not use simple class for fenced-divs (Jan Tojnar, amends #7242.)
Do not throw away attributes when Ext_attributes is enabled. Ext_attributes covers at least the following: Ext_fenced_code_attributes, Ext_header_attributes, Ext_inline_code_attributes, Ext_link_attributes.
Markdown writer:
Allow pipe_tables to be disabled for commonmark formats (commonmark_x, gfm) (#7375).
Re-use functions from Text.Pandoc.Markdown.Inline (Jan Tojnar).
DocBook writer: Remove non-existent admonitions (Jan Tojnar). attention, error and hint are reStructuredText specific.
HTML writer: Don’t omit width attribute on div (#7342).
Text.Pandoc.MIME, extensionFromMimeType: add a few special cases. When we do a reverse lookup in the MIME table, we just get the last match, so when the same mime type is associated with several different extensions, we sometimes got weird results, e.g. .vs for text/plain. These special cases help us get the most standard extensions for mime types like text/plain.
Lua utils: fix handling of table headers in from_simple_table (Albert Krewinkel, #7369). Passing an empty list of header cells now results in an empty table header.
Text.Pandoc.Citeproc:
Avoid duplicate classes and attributes on references div.
Fix regression in citeproc processing (#7376). If inline references are used (in the metadata references field), we should still only include in the bibliography items that are actually cited (unless nocite is used).
Require citeproc 0.4.0.1. This fixes a bug which led to doubled “et al.” in some (rare) circumstances.
MANUAL.txt:
Mention GladTeX for EPUB export (Sebastian Humenda). This updates the manual and the web site about the GladTeX usage.
More details and a useful link for YAML syntax.
CONTRIBUTING.md: update modules overview (Albert Krewinkel).
using-the-pandoc-api.md: switch from String to Text (Albert Krewinkel).

New in Pandoc 2.14.0.1 (Jun 1, 2021)

New in Pandoc 2.14 (May 29, 2021)

Text.Pandoc.SelfContained: use application/octet-stream for unknown mime types instead of halting with an error (#7202).
Change reader types, allowing better tracking of source positions [API change]. Previously, when multiple file arguments were provided, pandoc simply concatenated them and passed the contents to the readers, which took a Text argument. As a result, the readers had no way of knowing which file was the source of any particular bit of text. This meant that we couldn’t report accurate source positions on errors or include accurate source positions as attributes in the AST. More seriously, it meant that we couldn’t resolve resource paths relative to the files containing them (see e.g. #5501, #6632, #6384, #3752).
Add rebase_relative_paths extension (#3752). When enabled, this extension rewrites relative image and link paths by prepending the (relative) directory of the containing file. This behavior is useful when your input sources are split into multiple files, across several directories, with files referring to images stored in the same directory. The extension can be enabled for all markdown and commonmark-based formats.
Add Text.Pandoc.Sources (exported module), with a Sources type and a ToSources class. A Sources wraps a list of (SourcePos, Text) pairs [API change]. A parsec Stream instance is provided for Sources. The module also exports versions of parsec’s satisfy and other Char parsers that track source positions accurately from a Sources stream (or any instance of the new UpdateSourcePos class).
EPUB Writer: Fix belongs-to-collection XML id choice (#7267, nuew). The epub writer previously used the same XML id for both the book identifier and the epub collection. This causes an error on epubcheck.
BibTeX/BibLaTeX writer: Handle annote field (#7266).
ZimWiki writer: allow links and emphasis in headers (#6605, Albert Krewinkel).
Lua filters: respect Inlines/Blocks filter functions in pandoc.walk_* (Albert Krewinkel).
Add text as build-depend for trypandoc (#7193, Roman Beránek).
Bump upper-bounds for network-uri, time, attoparsec.
Use citeproc 0.4.
Use texmath 0.12.3.
Use jira-wiki-markup 1.3.5 (Albert Krewinkel).
Require latest skylighting (fixes a bug in XML syntax highlighting).
Use latest xml-conduit.
Use latest commonmark, commonmark-extensions, commonmark-pandoc.
Use haddock-library-1.10.0 (Albert Krewinkel).
Allow compilation with base 4.15 (Albert Krewinkel).
Updated and fixed typos in documentation (Charanjit Singh, Anti-Distinctlyminty, Tatiana Porras, obcat).
Add instructions for installing pandoc-types before compiling filter.
INSTALL: add note that parallel installations should be avoided (#6865).
Remove biblatex-nussbaum.md test. It is basically the same as biblaetx-quotes.md.
Command tests: fail if a file contains no tests—and fix a test that failed in that way!

New in Pandoc 2.13 (Mar 21, 2021)

Support yaml_metadata_block extension for commonmark, gfm (#6537). This support is a bit more limited than with pandoc’s markdown. The YAML block must be the first thing in the input, and the leaf notes are parsed in isolation from the rest of the document. So, for example, you can’t use reference links if the references are defined later in the document.
Fix fallback to default partials when custom templates are used. If the directory containing a template does not contain the partial, it should be sought in the default templates, but this was not working properly (#7164).
Handle nocite better with --biblatex and --natbib (#4585). Previously the nocite metadata field was ignored with these formats. Now it populates a nocite-ids template variable and causes a nocite command to be issued.
Text.Pandoc.Citeproc: apply fixLinks correctly (#7130). This is code that incorporates a prefix like https://doi.org/ into a following link when appropriate.
Text.Pandoc.Shared:
Remove backslashEscapes, escapeStringUsing [API change]. Replace these inefficient association list lookups with more efficient escaping functions in the writers that used them (for a 10-25% performance boost in org, haddock, rtf, texinfo writers).
Remove ToString, ToText typeclasses [API change]. These were needed for the transition from String to Text, but they are no longer used and may clash with other things.
Simplify compactDL.
Text.Pandoc.Parsing:
Change type of readWithM so that it is no longer polymorphic [API change]. The ToText class has been removed, and now that we’ve completed the transition to Text we no longer need this to operate on Strings.
Remove F type synonym [API change]. Muse and Org were defining their own F anyway.
Text.Pandoc.Readers.Metadata:
Export yamlMetaBlock [API change].
Make yamlBsToMeta, yamlBsToRefs polymorphic on the parser state [API change].
Markdown reader: Fix regression with tex_math_backslash (#7155).
MediaWiki reader: Allow block-level content in notes (ref) (#7145).
Jira reader (Albert Krewinkel):
Fixed parsing of autolinks (i.e., of bare URLs in the text). Previously an autolink would take up the rest of a line, as spaces were allowed characters in these items.
Emoji character sequences no longer cause parsing failures. This was due to missing backtracking when emoji parsing fails.
Mark divs created from panels with class “panel”.
RST reader: fix logic for ending comments (#7134). Previously comments sometimes got extended too far.
DocBook writer: include Header attributes as XML attributes on section (Erik Rask). Attributes with key names that are not allowed as XML attributes are dropped, as are attributes with invalid values and xml:id (DocBook 5) and id (DocBook 4).
Docx writer:
Make nsid in abstractNum deterministic. Previously we assigned a random number, but we don’t need random values, so now we just assign a value based on the list marker.
Use integral values for w:tblW (#7141).
Jira writer (Albert Krewinkel):
Block quotes are only rendered as bq. if they do not contain a linebreak.
Jira writer: improve div/panel handling. Include div attributes in panels, always render divs with class panel as panels, and avoid nesting of panels.
HTML writer: Add warnings on duplicate attribute values. This prevents emitting invalid HTML. Ultimately it would be good to prevent this in the types themselves, but this is better for now.
Org writer: Prevent unintended creation of ordered list items (#7132, Albert Krewinkel). Adjust line wrapping if default wrapping would cause a line to be read as an ordered list item.
JATS templates: support ‘equal-contrib’ attrib for authors (Albert Krewinkel). Authors who contributed equally to a paper may be marked with equal-contrib.
reveal.js template: replace JS comment with HTML (#7154, Florian Kohrt).
Text.Pandoc.Logging: Add DuplicateAttribute constructor to LogMessage. [API change]
Use -j4 for linux release build. This speeds up the build dramatically on arm.
cabal.project: remove ghcoptions. Move flags to top level, so they can be set differently on the command line.
Require latest texmath, skylighting, citeproc, jira-wiki-markup. (The latest skylighting fixes a bad bug with Haskell syntax highlighting.) Narrow version bounds for texmath, skylighting, and citeproc, since the test output depend on them.
Use doclayout 0.3.0.2. This significantly reduces the time and memory needed to compile pandoc.
Use foldl' instead of foldl everywhere.
Update bounds for random (#7156, Alexey Kuleshevich).
Remove uses of some partial functions.
Don’t bake in a larger stack size for the executable.
Test improvements:
Use getExecutablePath from base, avoiding the dependency on executable-path.
Factor out setupEnvironment in Helpers, to avoid code duplication.
Fix finding of data files by setting teh pandoc_datadir environment variable when we shell out to pandoc. This avoids the need to use --data-dir for the tests, which caused problems finding pandoc.lua when compiling without the embed_data_files flag (#7163).
Benchmark improvements:
Build +RTS -A8m -RTS into default ghc-options for benchmark. This is necessary to get accurate benchmark results; otherwise we are largely measuring garbage collecting, some not related to the current benchmark.
Allow specifying BASELINE file in ‘make bench’ for comparison (otherwise the latest benchmark is chosen by default).
Force readFile in benchmarks early (Bodigrim).
CONTRIBUTING: suggest using a cabal.project.local file (#7153, Albert Krewinkel).
Add ghcid-test to Makefile. This loads the test suite in ghcid.

New in Pandoc 2.12 (Mar 9, 2021)

--resource-path now accumulates if specified multiple times (#6152). Resource paths specified later on the command line are prepended to those specified earlier. Thus, --resource-path foo --resource-path bar:baz is equivalent to --resource-path bar:bas:foo. (The previous behavior was for the last --resource-path to replace all the rest.) resource-path in defaults files behaves the same way: it will be prepended to the resource path set by earlier command line options or defaults files. This change facilitates the use of multiple defaults files: each can specify a directory containing resources it refers to without clobbering the resource paths set by the others.
Allow defaults files to refer to the home directory, the user data directory, and the directory containing the defaults file itself (#5871, #5982, #5977). In fields that expect file paths (and only in these fields),
${VARIABLE} will expand to the value of the environment variable VARIABLE (and in particular ${HOME} will expand to the path of the home directory). A warning will be raised for undefined variables.
${USERDATA} will expand to the path of the user data directory in force when the defaults file is being processed.
${.} will expand to the directory containing the defaults file. (This allows default files to be placed in a directory containing resources they make use of.)
When downloading content from URL arguments, be sensitive to the character encoding (#5600). We can properly handle UTF-8 and latin1 (ISO-8859-1); for others we raise an error. Fall back to latin1 if no charset is given in the mime type and UTF-8 decoding fails.
Allow abbreviations that don’t end in a period to be specified using --abbreviations (#7124).
Add new unexported module Text.Pandoc.XML.Light, as well as Text.Pandoc.XML.Light.Types, Text.Pantoc.XML.Light.Proc, Text.Pandoc.XML.Light.Output. (Closes #6001, #6565, #7091).
This module exports definitions of Element and Content that are isomorphic to xml-light’s, but with Text instead of String. This allows us to keep most of the code in existing readers that use xml-light, but avoid lots of unnecessary allocation.
We also add versions of the functions from xml-light’s Text.XML.Light.Output and Text.XML.Light.Proc that operate on our modified XML types, and functions that convert xml-light types to our types (since some of our dependencies, like texmath, use xml-light).
We export functions that use xml-conduit’s parser to produce an Element or [Content]. This allows existing pandoc code to use a better parser without much modification.
The new parser is used in all places where xml-light’s parser was previously used. Benchmarks show a significant performance improvement in parsing XML-based formats (with docbook, opml, jats, and docx almost twice as fast, odt and fb2 more than twice as fast).
In addition, the new parser gives us better error reporting than xml-light. We report XML errors, when possible, using the new PandocXMLError constructor in PandocError.
These changes revealed the need for some changes in the tests. The docbook-reader.docbook test lacked definitions for the entities it used; these have been added. And the docx golden tests have been updated, because the new parser does not preserve the order of attributes.
DocBook reader:
Avoid expensive tree normalization step, as it is not necessary with the new XML parser.
Support informalfigure (#7079) (Nils Carlson).
Docx reader:
Use Map instead of list for Namespaces. This gives a speedup of about 5-10%. With this and the XML parsing changes, the docx reader is now about twice as fast as in the previous release.
HTML reader:
Small performance tweaks.
Also, remove exported class NamedTag(..) [API change]. This was just intended to smooth over the transition from String to Text and is no longer needed.
As a result, the functions isInlineTag and isBlockTag are no longer polymorphic; they apply to a Tag Text [API change].
Do a lookahead to find the right parser to use. This takes benchmarks from 34ms to 23ms, with less allocation.
Fix bad handling of empty src attribute in iframe (#7099). If src is empty, we simply skip the iframe. If src is invalid or cannot be fetched, we issue a warning nd skip instead of failing with an error.
JATS reader:
Avoid tree normalization, which is no longer necessary given the new XML parser.
LaTeX reader:
Don’t export tokenize, untokenize [API change]. These are internal implementation details, which were only exported for testing. They don’t belong in the public API.
Improved efficiency of the parser. With these changes the reader is almost twice as fast as in the last release in our benchmarks.
Code cleanup, removing some unnecessary things.
Rewrite withRaw so it doesn’t rely on fragile assumptions about token positions (which break when macros are expanded) (#7092). This requires the addition of sEnableWithRaw and sRawTokens in LaTeXState, and a new combinator disablingWithRaw to disable collecting of raw tokens in certain contexts. Add parseFromToks to Text.Pandoc.Readers.LaTeX.Parsing. Fix parsing of single character tokens so it doesn’t mess up the new raw token collecting. These changes slightly increase allocations and have a small performance impact.
Handle some bibtex/biblatex-specific commands that used to be dealt with in pandoc-citeproc (#7049).
Optimize satisfyTok, avoiding unnecessary macro expansion steps. Benchmarks after this change show 2/3 of the run time and 2/3 of the allocation of the Feb. 10 benchmarks.
Removed sExpanded in state. This isn’t actually needed and checking it doesn’t change anything.
Improve braced'. Remove the parameter, have it parse the opening brace, and make it more efficient.
Factor out pieces of the LaTeX reader to make the module smaller. This reduces memory demands when compiling. Created Text.Pandoc.Readers.{LaTeX,Math,Citation,Table,Macro,Inline}. Changed Text.Pandoc.Readers.LaTeX.SIunitx to export a command map instead of individual commands.
Handle table cells containing & in verb (#7129).
Make Text.Pandoc.Readers.LaTeX.Types an unexported module [API change].
Markdown reader:
Improved handling of mmd link attributes in references (#7080). Previously they only worked for links that had titles.
Improved efficiency of the parser (benchmarks show a 15% speedup).
OPML reader:
Avoid tree normalization, which is no longer necessary with the new XML parser.
ODT reader:
Finer-grained errors on parse failure (#7091).
Give more information if the zip container can’t be unpacked.
Org reader:
Support task_lists extension (Albert Krewinkel, #6336).
Fix bug in org-ref citation parsing (Albert Krewinkel, #7101). The org-ref syntax allows to list multiple citations separated by comma. Previously commas were accepted as part of the citation id, so all citation lists were parsed as one single citation.
RST reader:
Use getTimestamp instead of getCurrentTime to fetch timestamp. Setting SOURCE_DATE_EPOCH will allow reproducible builds.
RST reader: fix handling of header in CSV tables (#7064). The interpretation of this line is not affected by the delim option.
Jira reader:
Modified the Doc parser to skip leading blank lines. This fixes parsing of documents which start with multiple blank lines (Albert Krewinkel, #7095).
Prevent URLs within link aliases to be treated as autolinks (Albert Krewinkel, #6944).
Text.Pandoc.Shared
Remove formerly exported functions that are no longer used in the code base: splitByIndices, splitStringByIndicies, substitute, and underlineSpan (which had been deprecated in April 2020) [API change].
Export handleTaskListItem (Albert Krewinkel) [API change].
Change defaultUserDataDirs to defaultUserDataDir [API change]. We determine what is the default user data directory by seeing whether the XDG directory and/or legacy directory exist.
BibTeX writer:
BibTeX writer: use doclayout and doctemplate. This change allows bibtex/biblatex output to wrap as other formats do, depending on the settings of --wrap and --columns (#7068).
CSL JSON writer:
Output [] if no references in input, instead of raising a PandocAppError as before.
Docx writer:
Use getTimestamp instead of getCurrentTime for timestamp. Setting SOURCE_DATE_EPOCH will allow reproducible builds.
EPUB writer:
Use getTimestamp instead of getCurrentTime for timestamp. Setting SOURCE_DATE_EPOCH will allow reproducible builds (#7093). This does not suffice to fully enable reproducible in EPUB, since a unique id is still being generated for each build.
Support belongs-to-collection metadata (#7063) (Nick Berendsen).
JATS writer:
Escape special chars in reference elements (Albert Krewinkel). Prevents the generation of invalid markup if a citation element contains an ampersand or another character with a special meaning in XML.
Jira writer:
Use Span identifiers as anchors (Albert Krewinkel).
Use {noformat} instead of {code} for unknown languages (Albert Krewinkel). Code blocks which are not marked as a language supported by Jira are rendered as preformatted text via {noformat} blocks.
LaTeX writer:
Adjust hypertargets to beginnings of paragraphs (#7078). Use vadjust pre so that the hypertarget takes you to the beginning of the paragraph rather than one line down. This makes a particular difference for links to citations using --citeproc and link-citations: true.
Change BCP47 lang tag from jp to ja (Mauro Bieg, #7047).
Use function instead of map for accent lookup (should be more efficient).
Split the module to make it easier to compile on low-memory systems: added Text.Pandoc.Writers.LaTeX.{Util,Citation,Lang}.
Markdown writer:
Handle math right before digit. We insert an HTML comment to avoid a $ right before a digit, which pandoc will not recognize as a math delimiter.
Split the module to make it easier to compile on low-memory systems: added Text.Pandoc.Writers.Markdown.{Types,Inline}.
ODT writer:
Use getTimestamp instead of getCurrentTime for timestamp. Setting SOURCE_DATE_EPOCH will allow reproducible builds.
Update default ODT style (Lorenzo). Previously, the “First paragraph” style inherited from “Standard” but not from “Text body.” Now it is adjusted to inherit from “Text body”, to avoid some ugly spacing issues. It may be necessary to update a custom reference.odt in light of this change.
Org writer:
Support task_lists extension (Albert Krewinkel, #6336).
Pptx writer:
Use getTimestamp instead of getCurrentTime for timestamp. Setting SOURCE_DATE_EPOCH will allow reproducible builds.
JATS templates: tag author.name as string-name (Albert Krewinkel). The partitioning the components of a name into surname, given names, etc. is not always possible or not available. Using author.name allows to give the full name as a fallback to be used when author.surname is not available.
Add default templates for bibtex and biblatex, so that the variables header-include, include-before, include-after (or alternatively the command line options --include-in-header, --include-before-body, --include-after-body) may be used.
LaTeX template:
Update to iftex package (#7073) (Andrew Dunning)
Wrap url colours in braces (#7121) (Loïc Grobol).
revealjs template: Add ‘center’ option for vertical slide centering. (maurerle, #7104).
Text.Pandoc.XML: Improve efficiency of fromEntities.
Text.Pandoc.MIME
Add exported function getCharset [API change].
Text.Pandoc.UTF8: change IO functions to return Text, not String [API change]. This affects readFile, getContents, writeFileWith, writeFile, putStrWith, putStr, putStrLnWith, putStrLn. hPutStrWith, hPutStr, hPutStrLnWith, hPutStrLn, hGetContents. This avoids the need to uselessly create a linked list of characters when emiting output.
Text.Pandoc.App
Add parseOptionsFromArgs [API change, new exported function].
Add fields for CSL options to Opt [API change]: optCSL, optbibliography, optCitationAbbreviations.
Text.Pandoc.Citeproc.BibTeX
Text.Pandoc.Citeproc.writeBibTeXString now returns Doc Text instead of Text (#7068).
Correctly handle pages (= page in CSL) (#7067).
Correctly handle BibLaTeX langid (= language in CSL, #7067).
In BibTeX output, protect foreign titles since there’s no language field (#7067).
Clean up BibTeX parsing (#7049). Previously there was a messy code path that gave strange results in some cases, not passing through raw tex but trying to extract a string content. This was an artefact of trying to handle some special bibtex-specific commands in the BibTeX reader. Now we just handle these in the LaTeX reader and simplify parsing in the BibTeX reader. This does mean that more raw tex will be passed through (and currently this is not sensitive to the raw_tex extension; this should be fixed).
Text.Pandoc.Citeproc.MetaValue
Correctly parse “raw” date value in markdown references metadata. (See jgm/citeproc#53.)
Text.Pandoc.Citeproc
Use https URLs for links (Salim B, #7122).
Text.Pandoc.Class
Add getTimestamp [API change]. This attempts to read the SOURCE_DATE_EPOCH environment variable and parse a UTC time from it (treating it as a unix date stamp, see https://reproducible-builds.org/specs/source-date-epoch/). If the variable is not set or can’t be parsed as a unix date stamp, then the function returns the current date.
Text.Pandoc.Error
Add PandocUnsupportedCharsetError constructor for PandocError [API change].
Export renderError [API change].
Refactor handleError to use renderError. This allows us render error messages without exiting.
Text.Pandoc.Extensions
Ext_task_lists is now supported by org (and turned on by default) (Albert Krewinkel, #6336).
Remove Ext_fenced_code_attributes from allowed commonmark attributes (#7097). This attribute was listed as allowed, but it didn’t actually do anything. Use attributes for code attributes and more.
Lua subsystem:
Always load built-in Lua scripts from default data-dir (Albert Krewinkel). The Lua modules pandoc and pandoc.List are now always loaded from the system’s default data directory. Loading from a different directory by overriding the default path, e.g. via --data-dir, is no longer supported to avoid unexpected behavior and to address security concerns.
Add module “pandoc.path” (Albert Krewinkel, #6001, #6565). The module allows to work with file paths in a convenient and platform-independent manner.
Use strict evaluation when retrieving AST value from the stack (Albert Krewinkel, #6674).
Text.Pandoc.PDF
Disable smart extension when building PDF via LaTeX. This is to prevent accidental creation of ligatures like ?` and !` (especially in languages with quotations like German), and similar ligature issues. (See jgm/citeproc#54.)
Text.Pandoc.CSV:
Fix parsing of unquoted values (#7112). Previously we didn’t allow unescaped quotes in unquoted values, but they are allowed in CSV.
Test suite:
Use a more robust method for testing the executable. Many of our tests require running the pandoc executable. This is problematic for a few different reasons. First, cabal-install will sometimes run the test suite after building the library but before building the executable, which means the executable isn’t in place for the tests. One can work around that by first building, then building and running the tests, but that’s fragile. Second, we have to find the executable. So far, we’ve done that using a function findPandoc that attempts to locate it relative to the test executable (which can be located using findExecutablePath). But the logic here is delicate and work with every combination of options. To solve both problems, we add an --emulate option to the test-pandoc executable. When --emulate occurs as the first argument passed to test-pandoc, the program simply emulates the regular pandoc executable, using the rest of the arguments (after --emulate). Thus, test-pandoc --emulate -f markdown -t latex is just like pandoc -f markdown -t latex. Since all the work is done by library functions, implementing this emulation just takes a couple lines of code and should be entirely reliable. With this change, we can test the pandoc executable by running the test program itself (locatable using findExecutablePath) with the --emulate option. This removes the need for the fragile findPandoc step, and it means we can run our integration tests even when we’re just building the library, not the executable. [Note: part of this change involved simplifying some complex handling to set environment variables for dynamic library paths. I have tested a build with --enable-dynamic-executable, and it works, but further testing may be needed.]
Print accurate location if a test fails (Albert Krewinkel). Ensures that tasty-hunit reports the location of the failing test instead of the location of the helper test function.
Documentation: Update URLs and use https where possible (#7122, Salim B).
Add doc/libraries.md, a description of libraries that support pandoc.
MANUAL.txt
MANUAL: block-level formatting is not allowed in line blocks (#7107).
Clarify tex_math_dollars extension. Note that no blank lines are allowed between the delimiters in display math.
Add MANUAL section on reproducible builds.
Document no template fallback for absolute path (#7077, Nixon Enraght-Moony.)
Improve docs for cite-method.
Update README and man page.
Makefile: in make bench, create CSV files for comparison and compare against previous benchmark run. Add timestamp to CSV filenames.
cabal.project: don’t explicitly set -trypandoc. If we do, this can’t be overridden on the cabal command line.
doc/lua-filters.md: improve documentation for pandoc.mediabag.insert, pandoc.mediabag.fetch, directory, normalize (Albert Krewinkel).
Allow base64-bytestring-1.2.* (Dmitrii Kovanikov)
Require jira-wiki-markup 1.3.3 (Albert Krewinkel)
Require citeproc 0.3.0.8, which correctly titlecases when titles contain non-ASCII characters.
Use skylighting 0.10.4. This version of skylighting uses xml-conduit rather than hxt. This speeds up parsing of XML syntax definitions fourfold, and removes four packages from pandoc’s dependency graph: hxt-charproperties, hxt-unicode, hxt-regex-xmlschema, hxt.
Add script tools/parseTimings.pl to help pin down which modules take the most time and memory to compile.
Avoid unnecessary use of NoImplicitPrelude pragma (#7089) (Albert Krewinkel)
Benchmarks:
Use the lighter-weight tasty-bench instead of criterion.
Run writer benchmarks for binary formats too.
Alphabetize benchmarks.
Don’t run benchmarks for bibliography formats (yet; we need a special input for them).
Show allocation data
Clean up benchmark code.
Allow specifying patterns using `-p blah’.
trypandoc: add 2 second timeout.
Use -split-sections in creating linux release binary. This reduces executable size significantly (by about 30%).
Remove weigh-pandoc. It’s not really useful any more, now that our regular benchmarks include data on allocation.

New in Pandoc 2.11.4 (Jan 24, 2021)

Add biblatex, bibtex as output formats (closes #7040).
Recognize more extensions as markdown by default (#7034): mkdn, mkd, mdwn, mdown, Rmd.
Implement defaults file inheritance (#6924, David Martschenko). Allow defaults files to inherit options from other defaults files by specifying them with the following syntax: defaults: [list of defaults files or single defaults file].
Fix infinite HTTP requests when writing epubs from URL source (#7013). Due to a bug in code added to avoid overwriting the cover image if it had the form fileX.YYY, pandoc made an endless sequence of HTTP requests when writing epub with input from a URL.
Org reader:
Allow multiple pipe chars in todo sequences (Albert Krewinkel, #7014). Additional pipe chars, used to separate “action” state from “no further action” states, are ignored. E.g., for the following sequence, both DONE and FINISHED are states with no further action required: #+TODO: UNFINISHED | DONE | FINISHED.
Restructure output of captioned code blocks (Albert Krewinkel, #6977). The Div wrapper of code blocks with captions now has the class “captioned-content”. The caption itself is added as a Plain block inside a Div of class “caption”. This makes it easier to write filters which match on captioned code blocks. Existing filters will need to be updated.
Mark verbatim code with class verbatim (Dimitri Sabadie, #6998).
LaTeX reader:
Handle filecontents environment (#7003).
Put contents of unknown environments in a Div when raw_tex is not enabled (#6997). (When raw_tex is enabled, the whole environment is parsed as a raw block.) The class name is the name of the environment. Previously, we just included the contents without the surrounding Div, but having a record of the environment’s boundaries and name can be useful.
Mediawiki reader:
Allow space around storng/emph delimiters (#6993).
New module Text.Pandoc.Writers.BibTeX, exporting writeBibTeX and writeBibLaTeX. [API change]
LaTeX writer:
Revert table line height increase in 2.11.3 (#6996). In 2.11.3 we started adding addlinespace, which produced less dense tables. This wasn’t an intentional change; I misunderstood a comment in the discussion leading up to the change. This commit restores the earlier default table appearance. Note that if you want a less dense table, you can use something like defarraystretch{1.5} in your header.
EPUB writer:
Adjust internal links to identifiers defined in raw HTML sections after splitting into chapters (#7000).
Recognize Format "html4", Format "html5" as raw HTML.
Adjust internal links to images, links, and tables after splitting into chapters. Previously we only did this for Div and Span and Header elements (see #7000).
Ms writer:
Don’t justify text inside table cells.
JATS writer:
Use <element-citation> if element_citations extension is enabled (Albert Krewinkel).
Fix citations (Albert Krewinkel, #7018). By default we use formatted citations.
Ensure that <disp-quote> is always wrapped in <p> (#7041).
Markdown writer:
Cleaned up raw formats. We now react appropriately to gfm, commonmark, and commonmark_x as raw formats.
RST writer:
Fix bug with dropped content from inside spans with a class in some cases (#7039).
Docx writer:
Handle table header using styles (#7008). Instead of hard-coding the border and header cell vertical alignment, we now let this be determined by the Table style, making use of Word’s “conditional formatting” for the table’s first row. For headerless tables, we use the tblLook element to tell Word not to apply conditional first-row formatting.
Commonmark writer:
Implement start number on ordered lists (#7009). Previously they always started at 1, but according to the spec the start number is respected.
HTML writer:
Fix implicit_figure at end of footnotes (#7006).
ConTeXt template: Remove setupthinrules from default template. The width parameter this used is not actually supported, and the command didn’t do anything.
Text.Pandoc.Extensions:
Add Ext_element_citations constructor (Albert Krewinkel).
Text.Pandoc.Citeproc.BibTeX: New unexported function writeBibtexString.
Text.Pandoc.Citeproc:
Use finer grained imports (Albert Krewinkel).
Factor out and export getStyle [API change].
Export getReferences [API change, #7106].
Factor out getLang.
Text.Pandoc.Parsing: modify gridTableWith' for headerless tables. If the table lacks a header, the header row should be an empty list. Previously we got a list of empty cells, which caused an empty header to be emitted instead of no header. In LaTeX/PDF output that meant we got a double top line with space between.
ImageSize: use viewBox for SVG if no length, width attributes (#7045). This change allows pandoc to extract size information from more SVGs.
Add simple default.nix.
Use commonmark 0.1.1.3.
Use citeproc 0.3.0.5.
Update default CSL to use latest chicago-author-date.csl.
CONTRIBUTING.md: add note on GNU xargs.
MANUAL.txt:
Update description of -L/--lua-filter.
Document use of citations in note styles (#6828).

New in Pandoc 2.11.3.2 (Dec 30, 2020)

HTML reader: use renderTags’ from Text.Pandoc.Shared (Albert Krewinkel). A side effect of this change is that empty <col> elements are written as self-closing tags in raw HTML blocks.
Asciidoc writer: Add support for writing nested tables (#6972, timo-a). Asciidoc supports one level of nesting. If deeper tables are to be written, they are omitted and a warning is issued.
Docx writer: fix nested tables with captions (#6983). Previously we got unreadable content, because docx seems to want a <w:p> element (even an empty one) at the end of every table cell.
Powerpoint writer: allow arbitrary OOXML in raw inline elements (Albert Krewinkel). The raw text is now included verbatim in the output. Previously is was parsed into XML elements, which prevented the inclusion of partial XML snippets.
LaTeX writer: support colspans and rowspans in tables (#6950, Albert Krewinkel). Note that the multirow package is needed for rowspans. It is included in the latex template under a variable, so that it won’t be used unless needed for a table.
HTML writer: don’t include p tags in CSL bibliography entries (#6966). Fixes a regression in 2.11.3.
Add meta-description variable to HTML templates (#6982). This is populated by the writer by stringifying the description field of metadata (Jerry Sky). The description meta tag will make the generated HTML documents more complete and SEO-friendly.
Citeproc: fix handling of empty URL variables (DOI, etc.). The linkifyVariables function was changing these to links which then got treated as non-empty by citeproc, leading to wrong results (e.g. ignoring nonempty URL when empty DOI is present). See jgm/citeproc#41.
Use citeproc 0.3.0.3. Fixes an issue in author-only citations when both an author and translator are present, and an issue with citation group delimiters.
Require texmath 0.12.1. This improves siunitx support in math, fixes bugs with *mod family operators and arrays, and avoids italicizing symbols and operator names in docx output.
Ensure that the perl interpreter used for filters with .pl extension (wuffi).
MANUAL: note that textarea content is never parsed as Markdown (Albert Krewinkel).

New in Pandoc 2.11.3.1 (Dec 19, 2020)

New in Pandoc 2.11.3 (Dec 18, 2020)

With --bibliography (or bibliography in metadata), a URL may now be provided, and pandoc will fetch the resource. In addition, if a file path is provided and it is not found relative to the working directory, the resource path will be searched (#6940).
Add sourcepos extension for commonmark, gfm, commonmark_x (#4565). With the sourcepos extension set set, data-pos attributes are added to the AST by the commonmark reader. No other readers are affected. The data-pos attributes are put on elements that accept attributes; for other elements, an enlosing Div or Span is added to hold the attributes.
Change extensions for commonmark_x: replace auto_identifiers with gfm_auto_identifiers (#6863). commonmark_x never actually supported auto_identifiers (it didn’t do anything), because the underlying library implements gfm-style identifiers only. Attempts to add the auto_identifiers extension to commonmark will now fail with an error.
HTML reader:
Split module into several submodules (Albert Krewinkel). Reducing module size should reduce memory use during compilation.
Support advanced table features (Albert Krewinkel): block level content in captions, row and colspans, body headers, row head columns, footers, attributes.
Disable round-trip testing for tables. Information for cell alignment in a column is not preserved during round-trips (Albert Krewinkel).
Allow finer grained options for tag omission (Albert Krewinkel).
Simplify list attribute handling (Albert Krewinkel).
Pay attention to lang attributes on body element (#6938). These (as well as lang attributes on the html element) should update lang in metadata.
Retain attribute prefixes and avoid duplicates (#6938). Previously we stripped attribute prefixes, reading xml:lang as lang for example. This resulted in two duplicate lang attributes when xml:lang and lang were both used. This commit causes the prefixes to be retained, and also avoids invald duplicate attributes.
Commonmark reader:
Refactor specFor.
Set input name to "" to avoid clutter in sourcepos output.
Org reader:
Parse #+LANGUAGE into lang metadata field (#6845, Albert Krewinkel).
Preserve targets of spurious links (#6916, Albert Krewinkel). Links with (internal) targets that the reader doesn’t know about are converted into emphasized text. Information on the link target is now preserved by wrapping the text in a Span of class spurious-link, with an attribute target set to the link’s original target. This allows to recover and fix broken or unknown links with filters.
DocBook reader:
Table text width support (#6791, Nils Carlson). Table width in relation to text width is not natively supported by docbook but is by the docbook fo stylesheets through an XML processing instruction, <?dbfo table-width="50%"?>.
LaTeX reader:
Improve parsing of command options (#6869, #6873). In cases where we run into trouble parsing inlines til the closing ], e.g. quotes, we return a plain string with the option contents. Previously we mistakenly included the brackets in this string.
Preserve center environment (#6852, Igor Pashev). The contents of the center environment are put in a Div with class center.
Don’t parse rule with width 0 as horizontal rule. These are sometimes used as spacers in LaTeX.
Don’t apply theorem default styling to a figure inside (#6925). If we put an image in italics, then when rendering to Markdown we no longer get an implicit figure.
Dokuwiki reader:
Handle unknown interwiki links better (#6932). DokuWiki lets the user define his own Interwiki links. Previously pandoc reacted to these by emitting a google search link, which is not helpful. Instead, we now just emit the full URL including the wikilink prefix, e.g. faquk>FAQ-mathml. This at least gives users the ability to modify the links using filters.
Markdown writer:
Properly handle boolean values in writing YAML metadata (#6388).
Ensure that a new csl-block begins on a new line (#6921). This just looks better and doesn’t affect the semantics.
RST writer:
Better image handling (#6948). An image alone in its paragraph (but not a figure) is now rendered as an independent image, with an alt attribute if a description is supplied. An inline image that is not alone in its paragraph will be rendered, as before, using a substitution. Such an image cannot have a “center”, “left”, or “right” alignment, so the classes align-center, align-left, or align-right are ignored. However, align-top, align-middle, align-bottom will generate a corresponding align attribute.
Docx writer:
Keep raw openxml strings verbatim (#6933, Albert Krewinkel).
Use Content instead of Element. This allows us to inject raw OpenXML into the document without reparsing it into an Element, which is necessary if you want to inject an open tag or close tag.
Fix bullets/lists indentation, so that the first level is slightly indented to the right instead of right on the margin (cholonam).
Support bold and italic in “complex script” (#6911). Previously bold and italics didn’t work properly in LTR text. This commit causes the w:bCs and w:iCs attributes to be used, in addition to w:b and w:i, for bold and italics respectively.
ICML writer:
Fix image bounding box for custom widths/heighta (Mauro Bieg, #6936).
LaTeX writer:
Improve table spacing (#6842, #6860). Remove the strut that was added at the end of minipage environments in cells. Replace tabularnewline with \ addlinespace.
Improve calculation of column spacing (#6883).
Extract table handling into separate module (Albert Krewinkel).
Fix bug with nested csl- display Spans (#6921).
Improve longtable output (#6883). Don’t create minipages for regular paragraphs. Put width and alignment information in the longtable column descriptors.
OpenDocument writer:
Support for table width as a percentage of text width (#6792, Nils Carson).
Implement Div and Span ident support (#6755, Nils Carson). Spans and Divs containing an ident in the Attr will become bookmarks or sections with idents in OpenDocument format.
Add two extensions, xrefs_name and xrefs_number (#6774, Nils Carlson). Links to headings, figures and tables inside the document are substituted with cross-references that will use the name or caption of the referenced item for xrefs_name or the number for xrefs_number. For the xrefs_number to be useful heading numbers must be enabled in the generated document and table and figure captions must be enabled using for example the native_numbering extension. In order for numbers and reference text to be updated the generated document must be refreshed.
JATS writer:
Support advanced table features (Albert Krewinkel).
Support author affiliations (#6687, Albert Krewinkel).
Docbook writer:
Use correct id attribute consistently (Jan Tojnar). DocBook5 should always use xml:id instead of id.
Handle admonition titles better (Jan Tojnar). Docbook reader produces a Div with title class for <title> element within an “admonition” element. Markdown writer then turns this into a fenced div with title class attribute. Since fenced divs are block elements, their content is recognized as a paragraph by the Markdown reader. This is an issue for Docbook writer because it would produce an invalid DocBook document from such AST – the <title> element can only contain “inline” elements. Handle this special case separately by unwrapping the paragraph before creating the <title> element.
Add XML namespaces to top-level elements (#6923, Jan Tojnar). Previously, we only added xmlns attributes to chapter elements, even when running with --top-level-division=section. These namespaces are now added to part and section elements too, when they are the selected top-level divisions. We do not need to add namespaces to documents produced with --standalone flag, since those will already have xmlns attribute on the root element in the template.
HTML writer:
Fix handling of nested csl- display spans (#6921). Previously inner Spans used to represent CSL display attributes were not rendered as div tags as intended.
EPUB writer:
Include title page in landmarks (#6919). Note that the toc is also included if --toc is specified.
Add frontmatter type on body element for nav.xhtml (#6918).
EPUB templates: use preserveAspectRatio=“xMidYMid” for cover image (#6895, Shin Sang-jae). This change affects both the epub2 and the epub3 templates. It avoids distortion of the cover image by requiring that the aspect ratio be preserved.
LaTeX template:
Include csquotes package if csquotes variable set.
Put back amssymb. We need it for checkboxes in todo lists, and maybe for other things. In this location it seems compatible with the cases that prompted #6469 and PR #6762.
Disable language-specific shorthands in babel (#6817, #6887). Babel defines “shorthands” for some languages, and these can produce unexpected results. For example, in Spanish, 1.22 gets rendered as 122, and et~al. as etal. One would think that babel’s shorthands=off option (which we were using) would disable these, but it doesn’t. So we remove shorthands=off and add some code that redefines the shorthands macro. Eventually this will be fixed in babel, I hope, and we can revert to something simpler.
JATS template: allow array of persistent institute ids in pid (Albert Krewinkel).
Text.Pandoc.Parsing: minor code and efficiency improvements.
Text.Pandoc.Extension:
Add Ext_sourcepos constructor for Extension [API change].
Add Ext_xrefs_name and Ext_xrefs_number constructors for Extension (Nils Carson) [API change].
Text.Pandoc.Citeproc:
Fix truncation of [Citation] list in Cite inside footnotes (#6890). This affected author-in-text citations in footnotes. It didn’t cause problems for the printed output, but for filters that expected the citation id and other information.
Allow the use of both inline and external references (#6951), as with pandoc-citeproc. References defined in the document’s metadata take priority over references with the same id defined in an external bibliography.
Use fetchItem to get external bibliography (#6940).
Ensure that BCP47 lang codes can be used. We ignore the variants and just use the base lang code and country code when passing off to citeproc.
Citeproc BibTeX parser: revert change in getRawField which was made (for reasons forgotten) when transferring this code from pandoc-citeproc. The change led to -- in URLs being interpreted as en-dashes, which is unwanted (#6874).
Text.Pandoc.ImageSize:
Default to DPI 72 if the format specifies DPI of 0 (#6880). This shouldn’t happen, in general, but it can happen with JPEGs that don’t conform to the spec. Having a DPI of 0 will blow up size calculations (division by 0).
ImageSize: use JuicyPixels to determine size for png, jpeg, and gif, instead of doing our own binary parsing (#6936). This gives more reliable results.
Text.Pandoc.CSS:
Remove foldOrElse (internal module) (Albert Krewinkel).
Use skylighting 0.10.2 (#6625).
Use citeproc 0.3. This fixes issues with references with duplicate ids (jgm/citeproc#36).
Use doctemplates 0.9. This fixes issues with boolean metadata values in the Markdown writer (#6388) and in meta-json (#6650). It also fixes issues with nested for loops in templates.
Add translations zh-Hans.yaml and zh-Hant.yaml (#6904, #6909, Kolen Cheung, taotieren).
Add tests: True to cabal.project. This fixes some CI failures for cabal.
Normalize test/tables/*.native (#6888, Kolen Cheung).
Move executable to app directory to avoid problems with cabal repl.
CONTRIBUTING: add section “How can I help?” (#6892, Albert Krewinkel). Also adds a paragraph aimed at highlighting the importance of feature maintenance.
MANUAL: Document that –number-sections works in ms (#6935).

New in Pandoc 2.11.2 (Nov 19, 2020)

Default to using ATX (##-style) headings for Markdown output (#6662, Aner Lucero). Previously we used Setext (underlined) headings by default for levels 1–2.
Add option --markdown-headings=atx|setext, and deprecate --atx-headers (#6662, Aner Lucero).
Support markdown-headings in defaults files.
Fix corner case in YAML metadata parsing (#6823). Previously YAML metadata would sometimes not get recognized if a field ended with a newline followed by spaces.
--self-contained: increase coverage (#6854). Previously we only self-contained attributes for certain tag names (img, embed, video, input, audio, source, track, section). Now we self-contain any occurrence of src, data-src, poster, or data-background-image, on any tag; and also href on link tags.
Markdown reader:
Fix detection of locators following in-text citations. Prevously, if we had @foo [p. 33; @bar], the p. 33 would be incorrectly parsed as a prefix of @bar rather than a suffix of @foo.
Improve period suppression algorithm for citations in notes in note citation styles (#6835).
Don’t increment stateNoteNumber for example list references. This helps with #6836 (a bug in which example list references disturb calculation of citation note number and affect when ibid is triggered).
LaTeX reader:
Move getNextNumber from Readers.LaTeX to Readers.LaTeX.Parsing.
Fix negative numbers in siunitx commands. A change in pandoc 2.11 broke negative numbers, e.g. SI{-33}{celcius} or num{-3}. This fixes the regression.
DocBook reader: drop period in formalpara title and put it in a div with class formalpara-title, so that people can reformat with filters (#6562).
Man reader: improve handling of .IP (#6858). We now better handle .IP when it is used with non-bullet, non-numbered lists, creating a definition list. We also skip blank lines like groff itself.
Bibtex reader: fall back on en-US if locale for LANG not found. This reproduces earlier pandoc-citeproc behavior (jgm/citeproc#26).
JATS writer:
Wrap all tables (Albert Krewinkel). All <table> elements are put inside <table-wrap> elements, as the former are not valid as immediate child elements of <body>.
Move Table handling to separate module (Albert Krewinkel). Adds two new unexported modules: Text.Pandoc.Writers.JATS.Types, Text.Pandoc.Writers.JATS.Table.
Org writer:
Replace org #+KEYWORDS with #+keywords (TEC). As of ~2 years ago, lower case keywords became the standard (though they are handled case insensitive, as always).
Update org supported languages and identifiers according to the current list contained in https://orgmode.org/worg/org-contrib/babel/languages/index.html (TEC).
Only use filterIpynbOutput if input format is ipynb (#6841). Before this change content could go missing from divs with class output, even when non-ipynb was being converted.
When checking reader/writer name, check base name now that we permit extensions on formats other than markdown.
Text.Pandoc.PDF: Fix changePathSeparators for Windows (#6173). Previously a path beginning with a drive, like C:foobar, was translated to C:/foo/bar, which caused problems. With this fix, the backslashes are removed.
Text.Pandoc.Logging: Add constructor ATXHeadingInLHS constructor to LogMessage [API change].
Fix error that is given when people specify doc output (#6834, gison93).
LaTeX template: add a break after parbox in CSLRightInline. This should fix spacing problems between entries with numeric styles. Also fix number of params on CSLReferences.
reveal.js template: Put quotes around controlsLayout, controlsBackArrows, and display, since these require strings. Add showSlideNumber, hashOneBasedIndex, pause.
Use citeproc 0.2. This fixes a bug with title case around parentheses.
pandoc.cabal: remove ‘static’ flag. This isn’t really necessary and can be misleading (e.g. on macOS, where a fully static build isn’t possible). cabal’s new option --enable-executable-static does the same. On stack you can add something like this to the options for your executable in package.yaml:
ld-options: -static -pthread
Remove obsolete bibutils flag setting in linux/make_artifacts.sh.
Manual:
Correct link-citation -> link-citations.
Add a sentence about pagetitle for HTML (#6843, Alex Toldaiev).
INSTALL.md: Remove references to pandoc-citeproc (#6857).
CONTRIBUTING: describe hlint and how it’s used (#6840, Albert Krewinkel).

New in Pandoc 2.11.1.1 (Nov 8, 2020)

New in Pandoc 2.11.1 (Nov 4, 2020)

DocBook Reader: fix duplicate bibliography bug (#6773, Nils Carlson)
HTML reader
Parse contents of iframes (#6770)
Parse inline svg as image unless raw_html is set in the reader (in which case the svg is passed through as raw HTML) (#6770)
LaTeX reader
Fix bug parsing macro arguments (#6796). If cL is defined as mathcal{L}, and til as tilde{#1}, then tilcL should expand to tilde{mathcal{L}}, but pandoc was expanding it to tildemathcal{L}. This is fixed by parsing the arguments in “verbatim mode” when the macro expands arguments at the point of use
Properly support optional (cite) argument for blockquote from csquotes (#6802)
LaTeX writer: Improved calculation of table column widths. We now have LaTeX do the calculation, using tabcolsep. So we should now have accurate relative column widths no matter what the text width. The default template has been modified to load the calc package if tables are used
HTML writer: Fix duplicate “class” attribute for table rows (Andy Morris)
Text.Pandoc.Filter: allow shorter YAML representation of Citeproc (Albert Krewinkel). The map-based YAML representation of filters expects type and path fields. The path field had to be present for all filter types, but is not used for citeproc filters. The field can now be omitted when type is “citeproc”, as described in the MANUAL
Text.Pandoc.Error: Add PandocBibliographyError constructor for PandocError [API change]. This ensures that bibliography parsing errors generate messages that include the bibliography file name – otherwise it can be quite mysterious where it is coming from
Citeproc: properly handle csl field with data: URI (#6783). This is used with the JATS writer, so this fixes a regression in pandoc 2.11 with JATS output and citeproc
Allow citation-abbreviations in defaults file
JATS templates: ensure jats_publishing output is valid (Albert Krewinkel)
LaTeX template: Fix CSLRightInline, so that it does not run over the right margin
HTML template: default CSS tweaks (Mauro Bieg and John MacFarlane)
Fix margin before codeblock
Add monobackgroundcolor variable, making the background color and padding of code optional
Ensure that backgrounds from highlighting styles take precedence over monobackgroundcolor
Remove list markers from TOC
Add margin-bottom where needed
Remove italics from blockquote styling
Change borders and spacing in tables to be more consistent with other output formats
Style h5, h6
Set font-size for print media to 12pt
Reduce interline space
Reduce interparagraph space
Reduce line width
Remove the special line-height: 1 for table cells
Remove the special line-height for pre
Ensure that there is a bit more space before a heading than after
Slightly reduced space after title header
Add CSS example to MANUAL
man template: Change comment that triggers tbl from ."t to '" t, as specified in groff_man(7) (#6803)
Use latest commonmark, commonmark-extensions. This fixes a bug with nested blocks in footnotes with the footnote extension to commonmark. See jgm/commonmark-hs#63
Citeproc: use comma for in-text citations inside footnotes. When an author-in-text citation like @foo occurs in a footnote, we now render it with: AUTHOR NAME + COMMA + SPACE + REST. Previously we rendered: AUTHOR NAME + SPACE + "(" + REST + ")". This gives better results. Note that normal citations are still rendered in parentheses
Use latest citeproc
citeproc no longer capitalizes notes, so we do it in pandoc when appropriate
Closes #6783
Clarify manual on --track-changes (#6801)
Add doc/jats.md to document pandoc’s handling of JATS (#6794, Albert Krewinkel)
Fix code example in lua-filters.md (#6795)

New in Pandoc 2.11.0.4 (Oct 23, 2020)

New in Pandoc 2.11.0.2 (Oct 23, 2020)

New in Pandoc 2.11.0.1 (Oct 14, 2020)

New in Pandoc 2.11 (Oct 11, 2020)

Add --citeproc (-C) option to trigger built-in citation processing. It is no longer necessary to use the external pandoc-citeproc filter. --citeproc behaves like a filter and can be positioned relative to other filters as they appear on the command line.
The new built-in citation processing uses the citeproc library, a reimplementation of CSL citation processing that fixes many of the shortcomings of pandoc-citeproc. In general, citation processing should work much the same as it did with pandoc-citeproc, but with greater fidelity to CSL styles and better performance. (The tests from the pandoc-citeproc package have been carried over to pandoc.) The following differences should be noted:
At this point, only some of the writers (HTML, ms, LaTeX) properly interpret CSL display styles. You should get decent output in all formats (at least as good as with pandoc-citeproc), but indentation and block-alignment may not be right.
pandoc-citeproc searches the ~/.csl directory for .csl styles. Pandoc instead searches the csl subdirectory of the pandoc user data directory (e.g., ~/.pandoc/csl or ~/.local/share/pandoc/csl). Users who already keep CSL styles in ~/.csl may find it convenient to add a symlink.
Some of the bibliography formats supported by pandoc-citeproc (via hs-bibutils) are no longer supported: Copac, EndNote, ISI, MEDLINE, MODS, and RIS. If you use one of these formats, you may use the bibutils utility to convert to BibLaTeX. We now support only BibTeX, BibLaTeX, CSL JSON, and pandoc’s YAML/Markdown analogue of CSL JSON.
pandoc-citeproc would always retrieve the independent parent of a dependent style by doing an HTTP request. pandoc will now first seek the independent parent locally (in the resource path or in the csl subdirectory of the pandoc user data directory) before resorting to HTTP. In addition, you may omit the .csl extension, e.g. --csl zoology.
Using the --bibliography option (or including bibliography in YAML metadata) no longer triggers citation processing implicitly: one must always use the --citeproc option if citation processing is wanted.
Add csljson as and input and output format. This allows pandoc to convert between csljson and other bibliography formats (e.g. -f csljson -t markdown -s or -f bibtex -t csljson), and to generate formatted versions of CSL JSON bibliographies (e.g., pandoc -f csljson --citeproc pl.json -o pl.pdf).
Added bibtex, biblatex as input formats. This allows pandoc to convert between BibLaTeX and BibTeX and other bibliography formats, and to generated formatted versions of BibTeX/BibLaTeX bibliographies (e.g., pandoc -f biblatex --citeproc pl.bib -o pl.pdf).
Raise informative errors when YAML metadata parsing fails (#6730). Previously the command would succeed, returning empty metadata, with no errors or warnings.
Sort languages in --list-highlight-languages output (#6718, Albert Krewinkel). Languages were previously sorted by their long name, which leads to unexpected results).
Add CSS to default HTML template (#6601, Mauro Bieg). This greatly improves the default typography in pandoc’s HTML output. The CSS is sensitive to a number of variables (e.g. mainfont, fontsize, linestretch): see the manual for details. To restore the earlier, more spartan output, you can disable this with -M document-css=false.
Support --toc-depth option for ODT writer (#6696, niszet).
Fix issues with Windows UNC paths with some options (#5127).
Remove fenced_code_blocks and backtick_code_blocks from allowed commonmark and gfm extensions. These shouldn’t really be counted as extensions, because they can’t be disabled in commonmark. Adjust markdown writer to check for the commonmark variant in addition to extensions.
Add these extensions to gfm and commonmark: fenced_code_blocks, backtick_code_blocks, fenced_code_attributes. These can’t really be disabled in the reader, but they need to be enabled in the writer or we just get indented code.
Make sure proper set of extensions is recognized for commonmark_x.
Allow gfm_auto_identifiers, ascii_identifiers extensions for docx.
Markdown reader:
Add Maybe FilePath parameter to yamlToMeta [API change].
Export yamlToRefs [API change], a version of yamlToMeta specialized to references.
Set citationNoteNum accurately in citations.
Revise abbreviation support. Don’t insert a nonbreaking space after a potential abbreviation if it comes right before a note or citation. This causes problems for citeproc’s moving of note citations.
LaTeX reader:
Support missing siunitx commands (#6658).
Support squared, cubed, tothe in siunitx (#6657).
Improved uncertainty handling in slunitx.
Factored out siunitx stuff into separate unexposed module.
Fix improper empty cell filtering (#6689, Christian Despres).
Fix parsing of “show name” in newtheorem (#6734). Previously we were just treating it as a string and ignoring accents and formatting.
Prevent wrong nesting of multirow and multicolumn table cells (#6603, Laurent P. René de Cotret).
Table cell parser not consuming spaces correctly (#6596, Laurent P. René de Cotret).
Change SIRange to SIrange (#6617, Emerson Harkin).
Allow blank lines inside author (#6324).
DocBook reader:
Don’t squelch space at end of emphasis and other inline elements; instead, move it outside the element (#6719).
Implement table cell alignment (#6698, Nils Carlson).
Implement column span support for tables (#6492, Nils Carlson).
Update list of block level tags (#6610).
JATS reader:
Don’t squelch space at end of emphasis and other inline elements; instead, move it outside the element (#6719).
RST reader:
Apply .. class:: directly to following Header rather than creating a surrounding Div (#6699).
Docx reader:
Allow empty dates in comments and tracked changes (#6726, Diego Balseiro).
Markdown writer:
Be less aggressive about using quotes for YAML values, allowing e.g. a quotation mark or bracket as long as it’s not at the beginning of the line.
Use double quotes for YAML metadata (#6727).
Sort YAML metadata keys in Markdown output case-insensitive.
Asciidoc writer:
Support asciidoctor’s block figures (#6538, argent0).
LaTeX writer:
Fix spacing issue with list in definition list. When a list occurs at the beginning of a definition list definition, it can start on the same line as the label, which looks bad. Fix that by starting such lists with an item[].
HTML writer:
Support intermediate table headers (#5314, Albert Krewinkel).
Support attributes on all table elements (Albert Krewinkel).
Render table footers if present (#6314, Albert Krewinkel).
Fix addition of doc-biblioentry role.
Support colspans and rowspans in HTML tables (#6312, Albert Krewinkel).
ICML writer:
Support internal document links (#5541, Leonard Rosenthol).
Changed default link state to invisible (#6676, Leonard Rosenthol).
Docx writer:
Better handle list items whose contents are lists (#5948, Michael Hoffmann). If the first element of a bulleted or ordered list is another list, then that first item would previously disappear if the target format is docx.
Separate adjacent tables (#4315). Word combines adjacent tables, so to prevent this we insert an empty paragraph between two adjacent tables.
Org writer:
Don’t force blank line after headings (#6554).
OpenDocument writer:
Implement table cell alignment (#6700 Nils Carson, Mauro Bieg).
New table cell support with row and column spans (#6682, Nils Carson).
Syntax highlighting for inline code (#6711, niszet).
Add Text.Pandoc.Citeproc module, exporting processCitations [API change]. This depends on several other, unexported modules under Text.Pandoc.Citeproc.
Add module Text.Pandoc.Writers.CslJson, exporting writeCslJson. [API change]
Add module Text.Pandoc.Readers.CslJson, exporting readCslJson. [API change]
Add module Text.Pandoc.Readers.BibTeX, exporting readBibTeX and readBibLaTeX. [API change]
Text.Pandoc.Filter: Add CiteprocFilter constructor to Filter. [API change] This runs the processCitations transformation. We need to treat it like a filter so it can be placed in the sequence of filter runs (after some, before others). In FromYAML, this is parsed from citeproc or {type: citeproc}, so this special filter may be specified either way in a defaults file (or by citeproc: true, though this gives no control of positioning relative to other filters).
Add new exported module Text.Pandoc.Writers.AnnotatedTable [API change] (#6655, Christian Despres). This module (which should generally be imported qualified to avoid name conflicts) provides a Table type that mirrors the structure of a pandoc Table, but with added inferred information so that the writers do not have to lay out tables themselves. The toTable and fromTable functions convert between an annotated Table and a regular pandoc Table. In addition to producing a Table with coherent and well-formed annotations, the toTable function also normalizes its input table like the table builder does. Tests ensure that toTable normalizes tables exactly like the table builder, and that its annotations are coherent.
Text.Pandoc.Logging:
Remove unused CouldNotParseYamlMetadata constructor for LogMessage [API change].
Add CiteprocWarning constructor to LogMessage [API change].
Text.Pandoc.Readers.Metadata: export yamlBsToRefs [API change]. These allow specifying an id filter so we parse only references that are used in the document.
Text.Pandoc.Parsing:
Export ParseError [API change].
Add stateInNote and stateNoteNumber to ParserState [API change]. These are used to populate note numbers for citation processing.
Fix apparent typos in sample.lua (#6729, William Lupton). Also make the writer less aggressive in escaping quotes.
Text.Pandoc.Options:
defaultMathJaxURL: use tex-chtml-full instead of tex-mml-chtml (#6599, Kolen Cheung). This drops the MathML support (which we don’t need for HTML math rendering) and includes the full JavaScript, which makes it possible to use --self-contained (though there may still be issues if the required math fonts aren’t available). This change should also reduce latency in pages with lots of formulas.
Add /tex-chtml-full.js to defaultMathJaxURL (#6593) Previously we added this in processing command line options, but not in processing defaults files, which was inconsistent.
Epub.css: Fix cover page selectors and add note explaining their use (#6649, a-vrma).
Add data files needed for Text.Pandoc.Citeproc: these include default.csl in the data directory and a citeproc directory that is only used at compile-time for biblatex localizations. Note that we’ve added file-embed as a mandatory rather than a conditional depedency, because of the biblatex localization files.
Lua filters:
Add SimpleTable for backwards compatibility (#6575, Albert Krewinkel). A new type SimpleTable is made available to Lua filters. It is similar to the Table type in pandoc versions before 2.10; conversion functions from and to the new Table type are provided. Old filters using tables now require minimal changes and can use, e.g.,
if PANDOC_VERSION > {2,10,1} then
pandoc.Table = pandoc.SimpleTable
end
and
function Table (tbl)
tbl = pandoc.utils.to_simple_table(tbl)
…
return pandoc.utils.from_simple_table(tbl)
end
to work with the current pandoc version.
Make attr argument optional in Table constructor (Albert Krewinkel). This changes the Lua API. It is highly unlikely for this change to affect existing filters, since the documentation for the new Table constructor (and type) was incomplete and partly wrong before. The Lua API is now more consistent, as all constructors for elements with attributes now take attributes as the last parameter.
MANUAL.txt:
Add a dedicated Citations section which consolidates the information the manual used to contain about citation processing, and incorporates some information formerly found in the pandoc-citeproc man page.
Add note about lualatex using selnolig.
Remove duplicate seriespage (#6568, Blake Eryx).
Remove lists of support extensions for markdown variants (#6604). Instead, offer the advice to use --list-extensions=FORMAT.
Fix position of attributes in header (Albert Krewinkel).
Delete obsolete section on compact and loose lists (#6684).
Doc/lua-filters.md:
Add info on how to debug Lua filters (#6732, Ian Max Andolina).
Document Underline type and constructor (Albert Krewinkel).
Document body field (Albert Krewinkel).
Add missing header attribute
Add missing Link.title field (Albert Krewinkel).
Make the setting-the-date example conditional (the-solipsist). This makes the example a bit more realistic.
Remove outdated link table example.
Doc/org.md:
Add section on tables (Albert Krewinkel).
Add section on handling of unknown directives (Albert Krewinkel).
CONTRIBUTING.md: fix typo (#6584, Dmitry Volodin).
Use golden test framework for command tests. This means that --accept can be used to update expected output.
Use the smart extension when generating pandoc’s man page (#6613).
Release-candidate: don’t build windows i386. So far we haven’t been able to figure out how to get stack to use a 32-bit ghc.
Use null instead of deprecated Builder.isNull.
Makefile:
Fix macospkg target to fetch target from S3 artifacts.
Fix pandoc-templates target to include all partials.
Remove duplicated dependency in pandoc.cabal (#6591, Felix Yan).
Sort build depends in pandoc.cabal alphabetically (#6691, Albert Krewinkel).
Add .travis.yml for macos release candidate build (#6622). We need to build the release candidate on Travis rather than GitHub actions, because GH has macos 10.15, and binaries compiled on that OS will not work with 10.13. This build is only triggered on rc/* branches.
Remove instructions for building pandoc-citeproc from CI and release binary build instructions. We will no longer distribute pandoc-citeproc.
Fix math rendering in trypandoc (this broke after commit d8ad766).
Use latest versions of skylighting, commonmark (#6589), comonmark-extensions, commonmark-pandoc, texmath.
Relax version bounds for hslua, hslua-module-text, bytestring.
Use released pandoc-types 1.22. This changes the JSON encoding slightly for the new table types introduced in 1.21, so they’re more consistent with the rest. Developers of libraries for pandoc filters will want to take note.
Fix hlint suggestions, update hlint.yaml (#6680, Christian Despres).
Code cleanup (#6678, Joseph C. Sible).
Add haddocks to functions in Text.Pandoc.Writers.Shared (Albert Krewinkel).
Remove duplicate tshow definition.
Linux release candidate build: use ghc-musl container. This simplifies our build process (over using a customized alpine container).

New in Pandoc 2.10.1 (Jul 24, 2020)

Add commonmark_x output format. This is commonmark with a number of useful pandoc extensions enabled.
Many more extensions now work with commonmark and gfm.
These have been removed from githubMarkdownExtensions, though they’re still turned on for legacy markdown_github.
Add Ext_attributes constructor for Extension [API change].
LaTeX template: use selnolig to selectively suppress ligatures with lualatex (#6534).
Add generic attributes extension. This allows attributes to be added to any block or inline element in a uniform way. Since the Pandoc AST doesn’t include attributes on each element type, the attributes will sometimes be added by creating a surrounding Div or Span container. Currently this extension is only compatible with the commonmark and gfm readers.
Support --number-sections for docx output (#1413).
Add raw_markdown extension (which only affects ipynb input).
Benchmark bytestring readers (Nikolay Yakimov).
To add an attribute to a block-level element, e.g. a paragraph, put it before the block:
{#mypara}
This is a paragraph.
Multiple attributes may be used and will be combined:
{#mypara}
{.blue .warning key="val"}
This is a paragraph.
To add an attribute to an inline-level element, put it immediately after the element:
*emphasized text*{.special}
LaTeX reader:
Support SIRange reader (#6418, Emerson Harkin).
Support table col-span and row-span (#6311, Laurent P. René de Cotret). Supports multirow and multicolumn.
Support amsthm: newtheorem, theoremstyle, and theorem and proof environments, including labels and references. The only thing that is unsupported is the second optional argument, which causes numbering to be reset after the specified series is incremented.
Moved some code to T.P.LaTeX.Parsing. We need to reduce the size of the LaTeX reader to ease compilation on resource-limited systems.
Jira writer: keep image caption as alt attribute (#6529, Albert Krewinkel).
RST reader:
Fix csv tables with multiline cells (#6549).
Fix spurious newlines in some attributes from directives.
Avoid extra newline in included code blocks.
Commonmark reader:
Switch from cmark-gfm to commonmark-hs for commonmark and gfm parsing. This avoids depending on a C library and allows us to support more pandoc extensions for commonmark and gfm.
DocBook reader:
Parse releaseinfo as metadata (#6542).
Docx reader:
Only use bCs/iCs on runs with rtl or cs property (#6514, Nikolay Yakimov).
Code cleanup/refactoring (Nikolay Yakimov).
Org reader (Albert Krewinkel):
Respect export setting which disables entities MathML-like entities, e.g., alpha, can be disabled with the #+OPTION: e:nil export setting (Albert Krewinkel).
Respect export setting disabling footnotes. Footnotes can be removed from the final document with the #+OPTION: f:nil export setting.
Respect tables-excluding export setting. Tables can be removed from the final document with the #+OPTION: |:nil export setting.
Markdown writer:
Move asciify out of escapeString. Otherwise unsmartify doesn’t catch quotes that have already been turned to entities.
Add writeCommonmark (new exported function, API change).
Use unicode super/subscript characters when possible if the superscript or subscript extension or raw_html aren’t available.
Render caption as following paragraph when table_caption extension is not enabled.
Use numerical labels for reference links that are longer than 999 characters or contain square brackets, for conformity with commonmark (#6560).
Commonmark writer:
Instead of using cmark-gfm, use writeCommonmark from the Markdown writer. This function calls the markdown writer with appropriate extensions and a few small modifications (e.g. not requiring backslashes before spaces inside super/subscripts). With this change comonmark and gfm output can be used with a wider selection of extensions.
HTML writer:
Improve alt-text/caption handling for HTML5 (#6491, Albert Krewinkel). Screen readers read an image’s alt attribute and the figure caption, both of which come from the same source in pandoc. The figure caption is hidden from screen readers with the aria-hidden attribute. This improves accessibility. For HTML4, where aria-hidden is not allowed, pandoc still uses an empty alt attribute to avoid duplicate contents.
Ms writer:
Fix code highlighting with blank lines. Previously blank lines were simply omitted from highligted code.
Escape starting periods in ms writer code blocks (#6505, Michael Hoffmann). If a line of ms code block output starts with a period (.), it should be prepended by & so that it is not interpreted as a roff command.
Text.Pandoc.Extensions:
Trim down githubMarkdownExtensions. Previously it included all of the following, which make sense for the legacy markdown_github but not for gfm, since they are part of base commonmark and thus can’t be turned off in gfm:
Ext_all_symbols_escapable
Ext_backtick_code_blocks
Ext_fenced_code_blocks
Ext_space_in_atx_header
Ext_intraword_underscores
Ext_lists_without_preceding_blankline
Ext_shortcut_reference_links
Documentation:
Update using-the-pandoc-api.md (favonia).
Fix Typos in lua-filters.md (tajmone).
Rewrite Raw HTML/TeX section in MANUAL.txt to avoid duplicate headings for the extensions.
Fix typo in MANUAL.txt (Benjamin Wuethrich).
Remove duplicate ‘titlepage’ in MANUAL.txt (Blake Eryx).
CONTRIBUTING.md: Advertise the official nightlies in GitHub actions. Replaces #6500, thanks to @ickc.

New in Pandoc 2.10 (Jun 30, 2020)

New in Pandoc 2.9.2.1 (Mar 24, 2020)

Markdown reader:
Fix table alignment when heading begins with t (#6153). Due to a typo (t instead of t) we were center aligning column headings that begin with a lowercase t!
Text.Pandoc.Readers.Roff:
Fix parsing of . in man/ms readers (#6175). Previously due to a typo it was being parsed as `.
Fix parsing of ' in man/ms readers (#6175). It was being parsed as a backtick.
Jira reader (Albert Krewinkel):
Fix parsing of tables without preceding blankline (#6198). A bug was fixed which caused faulty parsing if a table was not preceded by a newline and the first table cell had no space after the initial | characters.
Fix parsing of strikeout, emphasis (#6196). A bug was fixed which caused non-emphasized text containing digits and/or non-special symbols (like dots) to sometimes be parsed incorrectly.
Support colored inline text, indented lists (#6183, #6184).
Ms writer:
Fix definition lists so indent even when paragraph indent is set to 0 (as is the default). Also ensure indent for display math that falls back to TeX.
Use .QS/.QE instead of .RS/.RE for block quotes.
EPUB writer:
Fix regression on detection of front/back/bodymatter (#6170). This bug caused sections with epub:type dedication to be misplaced in bodymatter instead of frontmatter as specified in the manual. The same problem would affect other epub:types. The pattern matching needed to be changed with the use of makeSection.
AsciiDoc writer: remove redundant otherwise guard in inlineToAsciiDoc (#6146, Ryan Scott).
Text.Pandoc.Class:
Fix missing import when data files are not embedded (Albert Krewinkel).
Subdivide Text.Pandoc.Class into small unexported modules and ensure that all functions have Haddock documentation (#6106, Albert Krewinkel).
Finer grained imports of Text.Pandoc.Class submodules (#6203, Albert Krewinkel).
Text.Pandoc.XML: Add to list of HTML5 attributes: allow, autocapitalize, decoding, enterkeyhint, imagesizes, imagesrcset, loading.
Use implicit Prelude (#6187, Albert Krewinkel). The previous behavior was introduced as a fix for #4464. It seems that this change alone did not fix the issue, and stack ghci and cabal repl only work with GHC 8.4.1 or newer, as no custom Prelude is loaded for these versions. Given this, it seems cleaner to revert to the implicit Prelude.
Always use custom prelude (#6187, Albert Krewinkel). Previously, the custom prelude was used only with older GHC versions, as a workaround for problems with ghci. The ghci problems are resolved by replacing package base with base-noprelude, allowing for consistent use of the custom prelude across all GHC versions.
Remove outdated checks for no longer supported base versions (Albert Krewinkel).
PDF via wkhtmltopdf: put user-specified options last (#6171). Certain options (e.g. cover) need to come after flags on the command line.
Text.Pandoc.App: set resource path at the beginning so it can affect things like include-in-header (#5982).
Change macOS release candidate CI process so that notarized packages can be produced (#6169).
Make MANUAL more explicit about nonbreaking space handling by all_symbols_escapable (#6154, Fabien Schurter).
Trypandoc (Mike Tzou):
Add checkbox for standalone option (#6189).
Use strict mode for JavaScript code (#6188).
Fetch resources over https (#6188).
Remove unnecessary attributes on style, script elements (#6188).
Use details tag to make GitHub releases changelog collapsible.
Update filter code in doc/filters.md so it works with latest pandoc (#6185).
Linux/Dockerfile: upgrade to alpine 3.11 (#6180, Albert Krewinkel). This is used to build the static linux binaries.

New in Pandoc 2.9.2 (Feb 16, 2020)

Add csv as an input format (#6100). The CSV table is converted into a pandoc simple table. A new module Text.Pandoc.Readers.CSV exports readCSV [API change].
Introduce new format variants for JATS writer (#6014, Albert Krewinkel):
jats_archiving for the “Archiving and Interchange Tag Set”,
jats_publishing for the “Journal Publishing Tag Set”, and
jats_articleauthoring for the “Article Authoring Tag Set.”
The jats output format is now an alias for jats_archiving. The module Text.Pandoc.Writers.JATS now exports writeJatsArchiving, writeJatsPublishing, and writeJatsArticleAuthoring, as well as the legacy writeJATS [API change].
--defaults: Support bibliography and csl fields. Move addMeta from Text.Pandoc.App.CommandLineOptions to Text.Pandoc.App.Opt (internal change).
Add timing info for filters in --verbose mode (#6112). When verbose mode is specified (verbosity == INFO), print a notice when running a filter and when a filter completes (including timing).
LaTeX reader:
Allow & in LaTeX citation keys (#6110).
Improve caption and label parsing.
Don’t emit empty Span elements for labels.
Put tables with labels in a surrounding Div.
Resolve ref to table numbers (#6137).
Skip comments in more places where this is needed (#6114).
Allow beamer overlays for all commands in all raw tex (#6043). This affects parsing of raw tex in LaTeX and in Markdown and other formats.
Improve parsing of raw environments (#6034). If parsing fails in a raw environment (e.g. due to special characters like unescaped _), try again as a verbatim environment, which is less sensitive to special characters. This allows us to capture special environments that change catcodes as raw tex when -f latex+raw_tex is used.
RST reader:
Add highlight directive (#6140, Lucas Escot).
MediaWiki writer:
Prevent triple [[[ which confuses MediaWiki (#6119).
HTML reader:
Don’t parse data-id as id attribute. And similarly don’t parse any data-X as X when X is a valid HTML attribute.
Org reader:
Simplify parsing of sub- and superscripts (#6127, Albert Krewinkel). Speeds up parsing of single-word, markup-less sub- and superscripts.
LaTeX writer:
Group biblatex citations even with prefix and suffix (#5849, Ethan Riley). Previously biblatex citations were only grouped if there was no prefix. This patch allows them to be grouped in subgroups split by prefixes and suffixes, which allows better citation sorting.
Fix regression in handling of columns in beamer slides (#6033). Columns in title slides were causing problems with slide division.
Fix duplicate frame classes in LaTeX/Beamer output (#6107).
HTML writer:
Fix duplicate attributes on headings (#6062), regression from 2.7.x.
Fix --number-offset with HTML TOC. Eventually it would be worth adding a parameter to makeSections so this could be done at that level; then it would also affect other writers that construct TOC manually.
reveal.js: restore old behavior for 2D nesting (#6032). The fix to #6030 actually changed behavior, so that the 2D nesting occurred at slide level N-1 and N, instead of at the top-level section. This commit restores the v2.7.3 behavior. If there are more than 2 levels, the top level is horizontal and the rest are collapsed to vertical.
reveal.js: ensure that pauses work even in title slides (#5819).
Markdown writer:
Fix regression: spurious dots in markdown_mmd metadata output (#6133).
Docx writer:
Fix regression with Compact style on tight lists (#6072). Starting in 2.8, the docx writer no longer distinguishes between tight and loose lists, since the Compact style is omitted. This is a side-effect of the fix to #5670, as explained in the changelog. This patch fixes the problem by extending the exception currently offered to Plain blocks inside tables to Plain blocks inside list items.
Jira writer:
Fix output of table headers (Albert Krewinkel, #6035).
Add Text.Pandoc.Image with unexported svgToPng.
Text.Pandoc.XML: Export html5Attributes, html4Attributes, rdfaAttributes (formerly unexported in Text.Pandoc.Writers.HTML). [API change]
Text.Pandoc.Shared: Export a new function findM (#6125, Joseph C. Sible).
Text.Pandoc.Logging: Add RunningFilter, FilterCompleted constructors to LogMessage [API change].
Text.Pandoc.CSV: fix bug in CSV parser; previously an extra blank record would sometimes be inserted at the end.
LaTeX template: add space option to xeCJK with PassOptionsToPackage (#6002). Otherwise we can get a clash with documentclasses that already load the package.
Lua filters:
Allow filtering of element lists (#6038, Albert Krewinkel). Lists of Inline and Block elements can now be filtered via Inlines and Blocks functions, respectively. This is helpful if a filter conversion depends on the order of elements rather than a single element. For example, the following filter can be used to remove all spaces before a citation
Add methods insert, remove, and sort to pandoc.List (Albert Krewinkel). Example of use:
local numbers = pandoc.List {2, 3, 1}
numbers:sort() -- numbers is now {1, 2, 3}
Make pandoc.List a callable constructor (Albert Krewinkel). It is now possible to construct a new List via pandoc.List() instead of pandoc.List:new().
Add tests for pandoc.List module (Albert Krewinkel).
Text.Pandoc.App.CommandLineOptions: Change setVariable to use Text instead of String. This avoids some unnecessary unpacking.
Use versioned directory for windows release zipfile. Also remove old make-windows-installer.bat, superseded by GitHub actions workflow, and modify pandoc.wxs for new paths.
Extensive code cleanup (#6141, #6128, #6129, #6130, #6123, #6105, 6102, #6117, #6124, #6115, #6116, #6111, Joseph C. Sible).
Fix hlint warnings (Albert Krewinkel).
Use latest doclayout, doctemplates (#6031). The new version of doclayout fixes a memory leak that affected --include-in-header with large files (and possibly other cases involving extremely long lines).
Use latest texmath.
Use latest skylighting and fix test suite (#6086).
sample.lua: Fix typo in descriptive comments (#6136, Caleb Maclennan). Fix typo in error message (#6135).
Add Docker and GH Actions instructions/links to INSTALL.md.
Update filter documentation (#6065). Improve cabal v2 instructions. Remove example using pandoc API directly (we have other docs for that and it was outdated).
Lua filter docs:
Cross-link constructors and types (Albert Krewinkel). Thanks to @bpj for the idea.
Sort pandoc.List methods alphabetically (Albert Krewinkel).
Unify, fix anchors and internal links (#6061, Albert Krewinkel). Links and anchors now follow consistent conventions, like lowercase-only anchor names. This breaks some links to specific sections in the document, but will make it much easier to link documentation in the future.
Clarify filter function execution order (#6059, Albert Krewinkel).
In docs, update URLs and use https: wherever possible (#6090, Salim B).

New in Pandoc 2.9.1.1 (Jan 6, 2020)

New in Pandoc 2.9.1 (Dec 24, 2019)

Add Jira reader (Albert Krewinkel, #5556).
Text.Pandoc.PDF: Ensure UTF8 when printing source in --verbose mode, avoiding an error on platforms that default to something other than UTF-8 (#5997).
Text.Pandoc.Templates: Strip directory before trying to find partial in data files (#5987).
Text.Pandoc.Shared: Improve makeSections so we don’t get doubled “number” attributes in EPUB output (or anywhere else) (#5986).
Added tests for --toc and --section-divs.
Text.Pandoc.MIME: Added glsl MIME type for WebGL maps (#6000, Jared Lander).
MANUAL: A bit clearer explanation for --base-header-level. We now say exactly how to translate between the deprecated --base-header-level and --shift-heading-level-by.
Note that backslashes are rendered as HTML entities, as there appears no alternative to produce a plain backslash if it is followed by markup. This may cause problems when used with confluence, where rendering seems to fail in this case.
Fix regression with --number-sections. Starting with 2.8, --number-sections also had the effect of --section-divs, even if --section-divs was not specified.
Improved table of contents generation in markdown, RTF, commonmark, better handling cases where section headings are enclosed in divs.
Ensure that later default file values for variable replace earlier ones (5988).
HTML reader: Add nav to list of block-level tags.
Jira writer: use jira-wiki-markup renderer (Albert Krewinkel, #5926). The following improvements are included in this change:
non-jira raw blocks are fully discarded instead of showing as blank lines;
table cells can contain multiple blocks;
unnecessary blank lines are removed from the output;
markup chars within words are properly surrounded by braces;
preserving soft linebreaks via --wrap=preserve is supported.
Org reader (Albert Krewinkel):
Wrap named table in Div, using name as id (#5984). Tables which are given a name via #+NAME: or #+LABEL: are wrapped in an additional Div, with the name set as the Div’s ID.
Report parsing errors properly.
Fix parsing problem for colons in headline (#5993).
lua-filters.md:
Remove spurious dot in title (#5996, Mauro Bieg).
Replace metadata example with image centering (#6004, Albert Krewinkel). Thanks to @efx for proposing this filter.

New in Pandoc 2.9 (Dec 23, 2019)

Text.Pandoc.Templates [API change]
Add Monad wrappers WithDefaultPartials and WithPartials. Wrapping these around an instance of PandocMonad gives us different instances of TemplateMonad, with different search behavior in retrieving partials. To compile a template and limit partial search to pandoc’s data files, use runWithDefaultPartials (compileTemplate ...). To compile a template and allow partials to be found locally (either on the file system or via HTTP, in the event that the main template has an absolute URL), ue runWithPartials (compileTemplate ...).
Export getTemplate, which seeks a template locally, or via HTTP if the template has an absolute URL, falling back to the data files if not found.
Export compileDefaultTemplate – does getDefaultTemplate and compiles the result, raising an error on failure.
Text.Pandoc.Class [API change]
Remove TemplateMonad instances for PandocIO and PandocPure. These were too limiting and caused a bug whereby a local partial could be used even when the default template was requested. We now rely on instances provided in the Templates module.
Text.Pandoc.App.OutputSettings: Simplify template retrieval code.
ConTeXt template: Adjust to title formatting (#5949, Denis Maier). Add setupinterlinespace to title, subtitle, date and author elements: otherwise longer titles that run over multiple lines will look squashed as tfd etc. won’t adapt the line spacing to the font size.
reveal.js template: Add title-slide-attributes variable (#5981, Frederik Elwert).
More informative JSON parse error (#5973).
Use external emojis package (forked from pandoc). Removed emoji data in Text.Pandoc.Emoji.
Fix regression in makeSections (#5965). Previously hierarchicalize (the ancestor of makeSections) would put header attributes on the containing Div. In 2.8 this behavior changed, which broke some tools depending on pandoc. Here we roll back this change, so that attributes again migrate from the header to the containing Div when makeSections is run. Note that attributes are retained on the header as well (unlike before) – with the exception of the id attribute, which of course cannot be duplicated.
Fix --toc-depth regression in 2.8 (#5967).
Use doctemplates 0.8. Rename template ‘filters’ as ‘pipes’ to avoid confusion with the other notion of filter used by pandoc.
Fix README.md so that relative links from manual become absolute. Previously they’d be broken links when viewed on GitHub or Hackage. So we add the base URL for the pandoc manual.
Document display math syntax in manual.

New in Pandoc 2.8.1 (Dec 6, 2019)

New in Pandoc 2.8.0.1 (Nov 27, 2019)

New in Pandoc 2.8 (Nov 22, 2019)

New in Pandoc 2.7.3 (Jun 12, 2019)

Add jira (Atlassian’s Jira wiki markup) as output format (#2497, Albert Krewinkel).
Add tex_math_dollars to multimarkdownExtensions (#5512). This form is now supported in multimarkdown, in addition to tex_math_double_backslash.
Fix --self-contained so it works when output format has extensions. Previously if you used --self-contained with html-smart or html+smart, it wouldn’t work.
Add template variable curdir with working directory from which pandoc is run (#5464).
Markdown reader: don’t create implicit reference for empty header (#5549).
Muse reader: allow images inside link descriptions (Alexander Krotov).
HTML reader: epub related fixes.
With epub extensions, check for epub:type in addition to type.
Fix problem with noteref parsing which caused block-level content to be eaten with the noteref.
Rename pAnyTag to pAny.
Refactor note resolution.
Trim definition list terms (Alexander Krotov).
LaTeX reader:
Add braces when resolving DeclareMathOperator (#5441). These seem to be needed for xelatex but not pdflatex.
Allow newlines in mintinline.
Pass through unknown listings language as class (#5540). Previously if the language was not in the list of languages supported by listings, it would not be added as a class, so highlighting would not be triggered.
RawLaTeXInline: Include trailing {}s in raw latex commands (#5439). This change affects the markdown reader and other readers that allow raw LaTeX. Previously, trailing {} would be included for unknown commands, but not for known commands. However, they are sometimes used to avoid a trailing space after the command. The chances that a {} after a LaTeX command is not part of the command are very small.
MediaWiki reader: handle multiple attributes in table row (#5471, chinapedia).
Docx reader: Add support for w:rtl (#5545). Elements with this property are put into Span inlines with dir="rtl".
DocBook reader: Issue IgnoredElement warnings.
Org reader (Albert Krewinkel):
Fix planning elements in headers level 3 and higher (#5494). Planning info is now always placed before the subtree contents. Previously, the planning info was placed after the content if the header’s subtree was converted to a list, which happens with headers of level 3 and higher per default.
Omit, but warn about unknown export options. Unknown export options are properly ignored and omitted from the output.
Prefer plain symbols over math symbols (#5483). Symbols like alpha are output plain and unemphasized, not as math.
Recognize emphasis after TODO/DONE keyword (#5484).
FB2 reader:
Skip unknown elements rather than throwing errors (#5560). Sometimes custom elements are used (e.g. id element inside author); previously the reader would halt with an error. Now it skips the element and issues an IgnoredElement warning.
Parse notes (#5493, Alexander Krotov).
Internal improvements (Alexander Krotov).
OpenDocument writer: Roll back automatic figure/table numbering (#5474). This was added in pandoc 2.7.2, but it makes it impossible to use pandoc-crossref. So this has been rolled back for now, until we find a good solution to make this behavior optional (or a creative way to let pandoc-crossref and this feature to coexist).
New module Text.Pandoc.Writers.Jira, exporting writeJira [API change] (Albert Krewinkel).
EPUB writer:
Don’t include ‘landmarks’ if there aren’t any. Previously we could get an empty ol element, which caused validation errors with epubcheck.
Ensure unique ids for styleesheets in content.opf (#5463).
Make stylesheet link compatible with kindlegen (#5466, Eric Schrijver). Pandoc omitted type="text/css" from both <style> and <rel="stylesheet"> elements in all templates, which is valid according to the spec. However, Amazon’s kindlegen software relies on this attribute on <link> elements when detecting stylesheets to include.
HTML writer:
Output video and audio elements depending on file extension of the image path (Mauro Bieg).
Emit empty alt tag in figures (#5518, Mauro Bieg). The same text is already in the and screen-readers would read it twice, see #4737.
Don’t add variation selector if it’s already there. This fixes round-trip failures.
Prevent gratuitious emojification on iOS (#5469). iOS chooses to render a number of Unicode entities, including ‘↩’, as big colorful emoji. This can be defeated by appending Unicode VARIATION SELECTOR-15’/‘VARIATION SELECTOR-16’. So we now append this character when escaping strings, for both ‘↩’ and ‘↔’. If other characters prove problematic, they can simply be added to needsVariationSelector.
Add class="heading" to level 7+ Headers rendered as <p> elements (#5457).
RST writer: treat Span with no attributes as transparent (#5446). Previously an Emph inside a Span was being treated as nested markup and ignored. With this patch, the Span is just ignored.
LaTeX writer:
Include inline code attributes with --listings (#5420).
Don’t produce columns environment unless beamer (#5485).
Fix footnote in image caption. Regression: the fix for #4683 broke this case.
Don’t highlight code in headings (#5574). This causes compilation errors.
Use mbox to get proper behavior inside sout (#5529).
EPUB writer: Fix document section assignments (#5546). For example, introduction should go in bodymatter, not frontmatter, and epigraph, conclusion, and afterward should go in bodymatter, not backmatter. For the full list of assignments, see the manual.
Markdown writer:
Add backslashes to avoid unwanted interpretation of definition list terms as other kinds of block (#554).
Ensure the code fence is long enough (#5519). Previously too few backticks were used when the code block contained an indented line of backticks. (Ditto tildes.)
Handle labels with integer names (Jesse Rosenthal, #5495). Previously if labels had integer names, it could produce a conflict with auto-labeled reference links. Now we test for a conflict and find the next available integer. This involves adding a new state variable stPrevRefs to keep track of refs used in other document parts when using --reference-location=block|section
Textile writer: fix closing tag for math output (Albert Krewinkel). Opening and closing tag for math output match now.
Org writer: always indent src blocks content by 2 spaces (#5440, Albert Krewinkel). Emacs always uses two spaces when indenting the content of src blocks, e.g., when exiting a C-c ' edit-buffer. Pandoc used to indent contents by the space-equivalent of one tab, but now always uses two spaces, too.
Asciidoc writer:
Use `+...+` form for inline code. The old `a__b__c` yields emphasis inside code in asciidoc. To get a pure literal code span, use `+a__b__c+`.
Use proper smart quotes with asciidoctor (#5487). Asciidoctor has a different format for smart quotes.
Use doubled ## when necessary for spans (#5566).
Ensure correct nesting of strong/emph (#5565): strong must be the outer element.
JATS writer:
Wrap elements with p when needed (#5570). The JATS spec restricts what elements can go inside fn and list-item. So we wrap other elements inside <p specific-use="wrapper"> when needed.
Properly handle footnotes (#5511) according to “best practice.” (Group them at the end in <fn-group> and use <xref> elements to link them.)
Fix citations with PMID so they validate (#5481). This includes an update to data/jats.csl.
Ensure validity of <pub-date> by parsing the date and extracting year, month, and day, as expected. Also add an iso-8601-date attribute automatically.
Don’t use <break> element for LineBreak. It is only allowed in a few special contexts, and not in <p> elements.
Don’t make <string-name> a child of <string>, which is illegal.
FB2 writer:
Do not wrap note references into <sup> and brackets (Alexander Krotov). Existing FB2 readers, such as FBReader, already display links with type=“note” as a superscript.
Use genre metadata field (#5478).
Muse writer: do not escape empty line after <br> (Alexander Krotov).
Add unicode code point in “Missing character” warning (#5538). If the character isn’t in the console font, the message is pretty useless, so we show the code point for anything non-ASCII.
Lua: add Version type to simplify comparisons (Albert Krewinkel). Version specifiers like PANDOC_VERSION and PANDOC_API_VERSION are turned into Version objects. The objects simplify version-appropriate comparisons while maintaining backward-compatibility. A function pandoc.types.Version is added as part of the newly introduced module pandoc.types, allowing users to create version objects in scripts.
Pandoc lua module (Albert Krewinkel):
Fix deletion of nonexistent attributes (#5569).
Better tests for Attr and AttributeList.
Pandoc.mediabag lua module (Albert Krewinkel):
Add function delete for deleting a single item.
Add function empty for removing all entries.
Add function items for iterating over mediabag.
Text.Pandoc.Class: Fix handling of file: URL scheme in downloadOrRead (#5517, Mauro Bieg). Previously file:/ URLs were handled wrongly and pandoc attempted to make HTTP requests, which failed.
Text.Pandoc.MIME: add mediaCategory [API change] (Mauro Bieg).
Text.Pandoc.Shared:
Add onlySimpleTableCells [API change] (Mauro Bieg) and use this to consolidate simple-table detection (#5524). This fixes an inconsistency in the HTML reader, which did not treat tables with <p> inside cells as simple.
MetaToJSON: treat digits starting with 0 as a string, not a number (#5479). This fixes a regression in YAML metadata in pandoc 2.7.2.
Text.Pandoc.Logging: Add IgnoredElement constructor for LogMessage. SkippedConetnt doesn’t work for some XML-based readers which don’t have access to parsec source positions.
Text.Pandoc.Asciify: Add Turkish undotted-i (#5433, Mauro Bieg).
Improve output of Lua tests (#5499, Albert Krewinkel). This makes use of tasty-lua, a package to write tests in Lua and integrate the results into Tasty output. Test output becomes more informative: individual tests and test groups become visible in test output. Failures are reported with helpful error messages.
Lua: add pandoc.system module (#5468, Albert Krewinkel). The system Lua module provides utility functions to interact with the operating- and file system. E.g. print(pandoc.system.get_current_directory()) or
Pandoc.system.with_temporary_directory('tikz', function (dir)
Write and compile a TikZ file with pdflatex end)
LaTeX template: Add pdflang to hypersetup if lang is set (#5443).
Beamer template: Fix using Beamer with geometry (#5505, Daniel Maslowski). Beamer already loads geometry, so we need to use the geometry command to set geometry options.
EPUB2/3 templates: Move inline styles to default epub.css (#5466). NOTE: Those who use a custom CSS stylesheet with EPUB should add these lines:
Code{ white-space: pre-wrap; }
Span.smallcaps{ font-variant: small-caps; }
Span.underline{ text-decoration: underline; }
Q { quotes: "“" "”" "‘" "’"; }
Div.column{ display: inline-block; vertical-align: top; width: 50%; }
Reveal.js template:
Updates for revealjs 3.8.0 (#5435, ebiim).
Remove reference to head.min.js (#5448, Winnie Hellmann). NOTE: users will need to update reveal.js to at least 3.8.0 for their presentations generated with this version of pandoc to work correctly.
Text.Pandoc.PDF:
Replace </> with literal / (#5451). We use forward-slash for a directory separator in tmpDir, even on Windows (because that’s what tex likes). So we should not put a backslash between the tmpDir and the filename on Windows. This is harmless enough in normal Windows setups, but it breaks on Cygwin. Thanks to @cc2x for noticing and diagnosing the problem.
Allow use of -output-directory in --pdf-engine-opt (#5462). This is currently possible with mklatex and -outdir, but was not yet possible with xelatex and -output-directory.
For PDF via ms/pdfroff, make TOC appear at beginning and in PDF bookmarks (#5553). Previously the TOC appeared at the end of the document, and was not bookmarked. To keep it at the end, add --pdf-engine-opt=--no-toc-relocation to your command line.
Fix broken links in documents (#5473, Shim Myeongseob). Also, use absolute links to pandoc.org when possible, so that the links can be followed by people viewing these documents on GitHub.
Improved sample lua tikz filter in lua-filters docs (#5445, Matthew Doty). There are three changes:
It only processes elements which begin with begin{tikzpicture}
It uses pdf2svg instead of imagemagick to preserve fidelity
The images produced have transparent backgrounds
MANUAL.txt:
Add note about title-meta, author-meta, date-meta (#5486).
Fix typo (#5489, Christian Krause).
Add test/tables.xwiki to git and pandoc.cabal (#5498, Mauro Bieg).
Disable missing-home-modules warning in stack.yaml. Otherwise stack ghci fails.

New in Pandoc 2.7.2 (Apr 6, 2019)

New in Pandoc 2.7.1 (Mar 14, 2019)

Add tectonic as an option for –pdf-engine (#5345, Cormac Relf). Runs tectonic on STDIN instead of a temporary .tex file, so that it looks in the working directory for include and input like the rest of the engines. Allows overriding the output directory args with --pdf-engine-opt=--outdir --pdf-engine-opt="$DIR".
Allow -o/--output to be used with --print-default-data-file, --print-highlighting-style, --print-default-template. Note that -o must occur BEFORE the --print* command on the command line (this is documented, #5357).
LaTeX reader:
Support underline, ul, uline (#5359, Paul Tilley). These are parsed as a Span with class underline, as with other readers.
Ensure that Footcite and Footcites get put in a note.
ipynb reader:
Remove sensitivity to raw_html, raw_tex extensions. We now include every output format. Pruning is handled by --ipynb-output.
Better handling of cell metadata. We now include even complex cell metadata in the Div’s attributes (as JSON, in complex cases, or as plain strings in simple cases).
ipynb writer:
Recurse into native divs for output cell data (#5354).
Render cell metadata fields from div attributes.
Docx writer: avoid extra copy of abstractNum and num elements in numbering.xml. This caused pandoc-produced docx files to be uneditable using Word Online (#5358).
Markdown writer: improve handling of raw blocks/inline. We now emit raw content using raw_attribute when no more direct method is available. Use of raw_attribute can be forced by disabling raw_html and raw_tex.
LaTeX writer: Add classes for frontmatter support (#5353, Andrew Dunning) and remove frontmatter from scrreprt.
LaTeX template:
Improve readability (#5363, Andrew Dunning).
Robust section numbering removal (#5351, Andrew Dunning). Ensures that section numbering does not reappear with custom section levels. See https://tex.stackexchange.com/questions/473653/.
Better handling of front/main/backmatter (#5348). In pandoc 2.7 we assumed that every class with chapters would accept frontmatter, mainmatter, and backmatter. This is not so (e.g. report does not). So pandoc 2.7 breaks on report class by including an unsupported command. Instead of the book-class variable, we use two variables, has-chapters and has-frontmatter, and set these intelligently in the writer.
Text.Pandoc.Shared: Improve filterIpynbOutput. Ensure that images are prioritized over text. best should include everything for ipynb.
Tests.Old: specify --data-dir=../data to ensure tests can find data files even if they haven’t been installed. Remove old pandoc_datadir environment variable, which hasn’t done anything for a long time.
MANUAL.txt: Add recommendation to use raw_attribute with ipynb (#5354).
Use cmark-gfm-hs 0.1.8 (note that 0.1.7 is buggy).
Use latest pandoc-citeproc, texmath.

New in Pandoc 2.7 (Mar 4, 2019)

Use XDG data directory for user data directory (#3582). Instead of $HOME/.pandoc, the default user data directory is now $XDG_DATA_HOME/pandoc, where XDG_DATA_HOME defaults to $HOME/.local/share but can be overridden by setting the environment variable. If this directory is missing, then $HOME/.pandoc is searched instead, for backwards compatibility. However, we recommend moving local pandoc data files from $HOME/.pandoc to $HOME/.local/share/pandoc. On Windows the default user data directory remains the same.
Slide show formats behavior change: content under headers less than slide level is no longer ignored, but included in the title slide (for HTML slide shows) or in a slide after the title slide (for beamer). This change makes possible 2D reveal.js slideshows with content in the top slide on each stack (#4317, #5237).
Add command line option --ipynb-output=all|none|best (#5339). Output cells in ipynb notebooks often contain several different versions of an output, with different MIME types, e.g. an HTML table and a plain-text fallback. Specifying --ipynb-output=best (the default) ensures that the best version for the output format is used. all includes all versions, and none suppresses them all, leaving output cells empty.
Asciidoctor is now an output format separate from asciidoc, to accommodate some minor implementation-specific differences (currently just in the treatment of display math).
Add latexmk as an option for --pdf-engine (#3195). Note that you can use --pdf-engine-opt=-outdir=bar to specify a persistent temp directory.
Markdown reader:
Improve tight/loose list handling (#5285). Previously the algorithm allowed list items with a mix of Para and Plain, which is never wanted.
Add newline when parsing blocks in YAML (#5271). Otherwise last block gets parsed as a Plain rather than a Para. This is a regression in pandoc 2.x. This patch restores pandoc 1.19 behavior.
Make yamlToMeta respect extensions (#5272, Mauro Bieg). This adds a ReaderOptions parameter to yamlToMeta [API change].
Fix bug parsing fenced code blocks (#5304). Previously parsing would break if the code block contained a string of backticks of sufficient length followed by something other than end of line.
LaTeX reader: don’t let egroup match {. braced now actually requires nested braces. Otherwise some legitimate command and environment definitions can break.
Docx reader (Jesse Rosenthal):
Rename getDocumentPath as getDocumentXmlPath.
Use field notation for setting ReaderEnv.
Figure out document.xml path once at the beginning of parsing, and add it to the environment, so we can avoid repeated lookups.
Dynamically determine main document xml path (#5277). The desktop Word program places the main document file in word/document.xml, but the online word places it in word/document2.xml. This file path is actually stated in the root _rels/.rels file, in the Relationship element with an http://../officedocument type.
Fix paths in archive to prevent Windows failure (#5277). Some paths in archives are absolute (have an opening slash) which, for reasons unknown, produces a failure in the test suite on MS Windows. This fixes that by removing the leading slash if it exists.
Add comments to aid code readability.
Trim space inside the last inline (#5273).
Unwrap sdt elements in footnotes and comments (#5302).
Muse reader (Alexander Krotov):
Test that block level markup does not break <verbatim>.
Add secondary note support.
Ipynb reader: handle images referring to attachments. Previously we didn’t strip off the attachment: prefix, so even though the attachment was available in the mediabag, pandoc couldn’t find it.
JATS reader:
Fix parsing of figures (#5321). This ensures that a figure containing a single image is parsed as a pandoc “implicit figure” (i.e., a Para with a single Image whose title attribute begins with fig:). More complex figures will still be parsed as divs.
Support fig-group block element (#5317).
Handle citations with multiple references (#5310). The rid attribute can have a space-separated list of ids.
AsciiDoc Writer: Add writeAsciiDoctor [API change, Tarik Graba]. Handle display math appropriately for Asciidoctor.
JATS writer: wrap figure caption in <p> to fix validation (#5290, Mauro Bieg).
HTML writer:
Implement WAI-ARIA roles for (end)notes, citations, and bibliography (#4213). Note that doc-biblioref is only used when link-citations produces links, since it belongs on links.
Include content (including speaker notes) in title slides (#4317, #5237).
Ipynb writer:
Ensure final newline.
Only include metadata under jupyter field.
Don’t create attachments for images with absolute URIs, including data: URIs (#5303).
Keep plain text fallbacks in output even if a richer format is included (#5293). We don’t know what output format will be needed. See the --ipynb-output command line option for a way to control what formats are included in the output.
Markdown writer: use markdown="1" when appropriate for Divs: when native_divs and markdown_in_html_blocks are disabled but raw_html and markdown_attribute are enabled.
LaTeX writer:
Use right fold for escapeString. This is more elegant than the explicit recursive code we were using.
Avoid {} after control sequences when escaping. ldots{}. doesn’t behave as well as ldots. with the latex ellipsis package. This patch causes pandoc to avoid emitting the {} when it is not necessary. Now ldots and other control sequences used in escaping will be followed by either a {}, a space, or nothing, depending on context.
For beamer, include contents under headers superordinate to slidelevel (#4317). Currently we keep the fancy title slide, and add a new slide with the same title and whatever content was under the header.
Powerpoint writer (Jesse Rosenthal): support underlines. Use span with single class “underline” as in docx writer.
Muse writer: escape secondary notes (Alexander Krotov).
FB2 writer: add section identifiers support (#5229, John KetzerX).
Make --fail-if-warnings work for PDF output (#5343).
Lua filters (Albert Krewinkel):
Load module pandoc before calling init.lua (#5287). The file init.lua in pandoc’s data directory is run as part of pandoc’s Lua initialization process. Previously, the pandoc module was loaded in init.lua, and the structure for marshaling was set up after. This allowed simple patching of element marshaling, but made using init.lua more difficult. Now, all required modules are now loaded before calling init.lua. The file can be used entirely for user customization. Patching marshaling functions, while discouraged, is still possible via the debug module.
All Lua modules bundled with pandoc, i.e., pandoc.List, pandoc.mediabag, pandoc.utils, and text are re-exported from the pandoc module. They are assigned to the fields List, mediabag, utils, and text, respectively.
Text.Pandoc.Lua (Albert Krewinkel):
Split StackInstances into smaller Marshaling modules.
Get CommonState from Lua global. This allows more control over the common state from within Lua scripts.
LaTeX template:
Support the subject metadata variable (#5289, Pascal Wagler).
Add frontmatter, mainmatter, backmatter for book classes (#5306).
Epub3 template: Add titlepage class to section (#5269).
HTML5 template: Add ARIA role doc-toc for table of contents (#4213).
Make –metadata-file use pandoc-markdown (#5279, #5272, Mauro Bieg).
Text.Pandoc.Shared:
Remove withTempDir [API change].
Add new exported function defaultUserDataDirs [API change].
Add filterIpynbOutput [API change].
Compactify: Avoid lists with a mix of Plain and Para elements (#5285).
Text.Pandoc.Translations: reorder alphabetically and remove Author (#5334, Mauro Bieg).
Text.Pandoc.Extensions:
More carefully groom ipynb default extensions.
Add all_symbols_escapable to githubMarkdownExtensions.
Text.Pandoc.PDF:
Use system temp directory when possible (#1192). Previously we created temp dirs in the working directory, partly (a) because there were problems using the system temp directory on Windows, when their pathnames included tildes, and partly (b) because programs like epstopdf.pl would not be allowed to write to directories outside the working directory in restricted mode. We now (a) use the system temp dir except when the path includes tildes, and (b) set TEXMFOUTPUT when creating the PDF, so that subsidiary programs can use the system temp directory. This addresses problems that occurred when pandoc was used in a synced directory (such as Dropbox).
Change types of subsidiary functions to PandocIO, to allow warnings to be threaded through (#5343).
Text.Pandoc.MIME: add WebP (#5267, Mauro Bieg).
Tests: avoid calling findPandoc multiple times.
Old tests: remove need for temp files by using pipeProcess.
Added simple ipynb reader/writer tests (#5274).
Rearrange --help output in a more rational way, with common options at the beginning and options grouped by function (#5336).
Trypandoc: Add JATS and other missing formats (Arfon Smith, #5291).
Add missing copyright notices and remove license boilerplate (#4592, Albert Krewinkel).
Use latest basement/foundation on 32bit windows.
Use latest skylighting (#5328). Custom syntax definitions no longer try to load language.dtd.
Require texmath 0.11.2.1
Use latest pandoc-citeproc (0.16.1.1).

New in Pandoc 2.6 (Jan 31, 2019)

Support ipynb (Jupyter notebook) as input and output format.
Add ipynb as input and output format (extension .ipynb).
Added Text.Pandoc.Readers.Ipynb [API change].
Added Text.Pandoc.Writers.Ipynb [API change].
Add PandocIpynbDecodingError constructor to Text.Pandoc.Error.Error [API change].
Depend on ipynb library.
Note: there is no template for ipynb.
Add DokuWiki reader (#1792, Alexander Krotov). This adds Text.Pandoc.Readers.DokuWiki [API change], and adds dokuwiki as an input format.
Implement task lists (#3051, Mauro Bieg). Added task_lists extension. Task lists are supported from markdown and gfm input. They should work, to some degree, in all output formats, though in most formats you’ll get a bullet list with a unicode character for the box. In HTML, you get checkboxes and in LaTeX/PDF output, a box is used as the list marker. API changes:
Added constructor Ext_task_lists to Extension.
Added taskListItemFromAscii and taskListItemToAscii to Text.Pandoc.Shared.
Allow some command line options to take URL in addition to FILE. --include-in-header, --include-before-body, --include-after-body.
HTML reader:
Handle empty start attribute (see #5162).
Treat textarea as a verbatim environment (#5241) and preserve spacing.
RST reader:
Change treatment of number-lines directive (Brian Leung, #5207). Directives of this type without numeric inputs should not have a startFrom attribute; with a blank value, the writers can produce extra whitespace.
Removed superfluous sourceCode class on code blocks (#5047).
Handle sourcecode directive as synonynm for code (#5204).
Markdown reader:
Remove sourceCode class for literate Haskell code blocks (#5047). Reverse order of literate and haskell classes on code blocks when parsing literate Haskell, so haskell is first.
Treat <textarea> as a verbatim environment (#5241).
Org reader:
Handle minlevel option differently (#5190, Brian Leung). When minlevel exceeds the original minimum level observed in the file to be included, every heading should be shifted rightward.
Allow for case of :minlevel == 0 (#5190).
Fix treatment of links to images (#5191, Albert Krewinkel). Links with descriptions which are pointing to images are no longer parsed as inline images, but as links.
Add support for #+SELECT_TAGS (Brian Leung).
Separate filtering logic from conversion function (Brian Leung).
TWiki reader: Fix performance issue with underscores (#3921).
MediaWiki reader: use _ instead of - in auto-identifiers (#4731). We may not still be exactly matching mediawiki’s algorithm.
LaTeX reader:
Remove sourceCode class for literate Haskell code blocks (#5047). Reverse order of literate and haskell classes on code blocks when parsing literate Haskell, so haskell is first.
Support DeclareMathOperator (#5149).
Support inputminted (#5103).
Support endinput (#5233).
Allow includes with dots like cc_by_4.0. Previously the .0 was interpreted as a file extension, leading pandoc not to add .tex (and thus not to find the file). The new behavior matches tex more closely.
Man reader:
Use mapLeft from Shared instead of defining own.
Docx reader (Jesse Rosenthal):
Handle level overrides (#5134).
Docx writer:
Support custom properties (#3024, #5252, Agustín Martín Barbero). Also supports additional core properties: subject, lang, category, description.
Make Level into a real type, instead of an alias for a tuple (Jesse Rosenthal).
ICML writer (Mauro Bieg):
Support custom-styles (#5137, see #2106).
Support unnumbered headers (#5140).
Texinfo writer: Use header identifier for anchor if present (#4731). Previously we were overwriting an existing identifier with a new one.
Org writer: Preserve line-numbering for example and code blocks (Brian Leung).
Man/Ms writers: Don’t escape - as -. The - gets rendered in HTML and PDF as a unicode minus sign.
Ms writer: Ensure we have a newline after .EN in disply math (#5251).
RST writer: Don’t wrap simple table header lines (#5128).
Asciidoc writer: Shorter delimiters for tables, blockquotes (#4364). This matches asciidoctor reference docs.
Dokuwiki writer: Remove automatic : prefix before internal image links (#5183, Damien Clochard). This prevented users from making relative image links.
Zimwiki writer: remove automatic colon prefix before internal images (#5183, Damien Clochard).
MediaWiki writer: fix caption, use ‘thumb’ instead of ‘frame’ (#5105). Captions used to have the word ‘caption’ prepended; this has been removed. Also, ‘thumb’ is used instead of ‘frame’ to allow images to be resized.
reveal.js writer:
Ensure that we don’t get > 2 levels of section nesting, even with slide level > 2 (#5168).
If slide level == N but there is no N-level header, make sure the next header with level > N gets treated as a slide and put in a section, rather than remaining loose (#5168).
Markdown writer:
Make plain RawBlocks pass through in plain output.
Include needed whitespace after HTML figure (#5121). We use HTML for a figure in markdown dialects that can’t represent it natively.
Commonmark writer:
Fix handling of SoftBreak with hard_line_breaks (#5195).
Implement --toc (writerTableOfContents) in commonmark/gfm writers (#5172).
EPUB writer:
Ensure that picture transforms are done on metadata too.
Small fixes to nav.xhtml: Add ‘landmarks’ id attribute to the landmarks nav. Replace old default CSS removing numbers from ol.toc li with new rules that match nav#toc ol, nav#landmarks ol. We keep the toc class on ol for backwards compatibility.
LaTeX writer:
Make raw content marked beamer pass through in beamer output (pandoc/lua-filters#40).
Beamer: avoid duplicated fragile property in some cases (#5208).
Add # special characters for listings (#4939). This character needs special handling in lstinline.
RTF writer: use toTableOfContents from Shared to replace old duplicated code.
Pptx writer:
Support custom properties. Also supports additional core properties: subject, category, description (#5252, Agustín Martín Barbero).
Use toTableOfContents from Shared to replace old duplicated code.
ODT writer (Augustín Martín Barbero):
Fix typo in custom properties (#2839).
Improve standard properties, including the following core properties: generator (Pandoc/VERSION), description, subject, keywords, initial-creator (from authors), creation-date (actual creation date) (#5252).
Custom writers:
Allow ‘-’ in filenames for custom lua writers (#5187).
sample.lua: add SingleQuoted, DoubleQuoted (#5104).
sample.lua: Add a missing > (MichaWiedenmann).
reveal.js template: Add zoomKey config (#4249).
HTML5 template: Remove unnecessary type=“text/css” on style and link for HTML5 (#5146).
LaTeX template (Andrew Dunning, except where noted):
Prevent fontspec from scaling mainfont to match the default font, Latin Modern. A main font set to 12pt could previously appear between 11pt to 13pt depending on its design. To return to the earlier rendering, use -V mainfontoptions="Scale=MatchLowercase" (#5212, #5218).
Display monospaced fonts without TeX ligatures when using --pdf-engine=lualatex. It now matches the behaviour of other engines (#5212, #5218).
Remove the deprecated romanfont variable. The functionality of mainfont is identical (#5218).
Render subtitle with the standard document classes. Previously, subtitle only appeared when using the KOMA-Script classes or Beamer (#5213, #5244).
Use Babel instead of Polyglossia for LuaLaTeX. This avoids several language selection problems, notably with retaining French spacing conventions when switching to a verbatim environment or another language; and in printing Greek text without hyphenation (#5193).
Use the xurl package if available, improving the appearance of URLs by allowing them to break at additional points (#5193).
Use bookmark if available to correct heading levels in PDF bookmarks: see the KOMA-Script 3.26 release notes (#5193).
Require the xcolor package to avoid a possible error when using additional packages alongside footnotes in tables (#5193, closes #4861).
Remove obsolete fixltx2e package, which has no functionality with TeX Live 2015 or later (#5193).
Allow multiple fontfamilies.options (#5193, closes #5194).
Restrict institute variable to Beamer (#5219).
Use footnotehyper package if available to make footnotes in tables compatible with hyperref (#5234).
Number parts and chapters in book classes only if the numbersections variable is set, for consistency with other output formats. To return to the previous behaviour, use -V numbersections -V secnumdepth=0 (#5235).
Reindent file (#5193).
Use built-in parskip handling with KOMA-Script classes (#5143, Enno).
Set default listings language for lua, assembler (#5227, John MacFarlane). Otherwise we get an error when trying to compile code with lua or assembler code. To change the default dialect (currenty 5.3 for lua and x86masm for assembler), you can use --include-in-header to inject something like lstset{defaultdialect=[5.2]Lua}.
Text.Pandoc.Readers: Changed types of readJSON; it now runs in an instance of PandocMonad, like the other readers and writers. [API change]
Text.Pandoc.Writers: Changed types of writeJSON; it now runs in an instance of PandocMonad, like the other readers and writers. [API change]
Text.Pandoc.Error: Added PandocUTF8DecodingError constructor for PandocError. [API change]
Text.Pandoc.Writers.Shared - add toTableOfContents. [API change] This is refactored out from the Markdown writer. It can be used in other writers to create a table of contents.
Improve error messages for UTF-8 decoding errors. Now we give the filename and byte offset (#4765).
Text.Pandoc.XML: Strip out illegal XML characters in escapeXMLString (#5119).
Text.Pandoc.Process: update pipeProcess (Albert Krewinkel). The implementation of pipeProcess was rewritten to fix sporadic failures caused by prematurely closed pipes.
Use safeRead instead of read everywhere in the code (John MacFarlane, Mauro Bieg, #5162, #5180).
Text.Pandoc.SelfContained: Decompress .svgz when converting to data: URI (#5163, Alexander Krotov).
Text.Pandoc.Parsing: Remove unused HasHeaderMap (#5175, Alexander Krotov). [API change]
Normalize Windows paths to account for change in ghc 8.6 (#5127). When pandoc is compiled with ghc 8.6, Windows paths are treated differently, and paths beginning \server no longer work. This commit rewrites such patsh to \?UNCserver which works. The change operates at the level of argument parsing, so it only affects the command line program.
Simplify/fix reading of --metadata values on command line to avoid problems relating to haskell-hvr/HsYAML#7 (#5177).
data/pandoc.lua: auto-fix nested constructor arguments (Albert Krewinkel). Incorrect types to pandoc element constructors are automatically converted to the correct types when possible. This was already done for most constructors, but conversions are now also done for nested types (like lists of lists).
Removed custom Setup.hs, use build-type: simple. The only thing we gained from the custom build was automatic installation of the man page when using ‘cabal install’. But custom builds cause problems, e.g., with cross-compilation. Installation of the man page is better handled by packagers. Note to packagers (e.g. Debian): it may be necessary to add a step installing the man page with the next release.
Allow latest http-client, tasty, zip-archive, Glob.
Require skylighting >= 0.7.5, adding support for sml, J, typescript.
Tests: Cleaned up findPandoc in Tests.Helpers, so it works well with cabal v2.
INSTALL.md:
Use button for installer links (John MacFarlane, Mauro Bieg, #5167).
Fix links and bump required stack version (max).
Improve installation notes on associated software (Andrew Dunning). Includes explanation of how to install related tools with package managers (since the method of installing rsvg-convert is not obvious).
doc/org.md: improve documentation of org features (Albert Krewinkel).
doc/lua-filters.md: use 3rd level headers for module fields.
MANUAL:
Clarify automatic identifiers (#5201). We remove non-alphanumerics. This includes, e.g., emojis.
Fix example for Div with id (Geoffrey Ely).
Update list of LaTeX packages used.
Make it clear that hard_line_breaks works in gfm (see #5195).
Mention raw_attribute in documentation for raw_html and raw_tex (#5240, thanks to @eiro).
Clarify that $sep$ must come right before $endfor$ in templates (#5243, Lev Givon).
Document metadata support for docx, odt, pptx writers (Agustín Martín Barbero).
Reorganize template variables (#5249, Andrew Dunning). Add additional headings to categorize variables, and alphabetize when there is large number; add more examples.
Document date-meta template variable (#5260, Tristan Stenner).
trypandoc: Fix CSS and viewport.

New in Pandoc 2.5 (Nov 28, 2018)

Text.Pandoc.App: split into several unexported submodules (Albert Krewinkel): Text.Pandoc.App.FormatHeuristics, Text.Pandoc.App.Opt, Text.Pandoc.App.CommandLineOptions, Text.Pandoc.App.OutputSettings. This is motivated partly by the desire to reduce recompilations when something is modified, since App previously depended on virtually every other module.
Text.Pandoc.Extensions
Semantically, gfm_auto_identifiers is now a modifier of auto_identifiers; for identifiers to be set, auto_identifiers must be turned on, and then the type of identifier produced depends on gfm_auto_identifiers and ascii_identifiers are set. Accordingly, auto_identifiers is now added to githubMarkdownExtensions (#5057).
Remove ascii_identifiers from githubMarkdownExtensions. GitHub doesn’t seem to strip non-ascii characters any more.
Text.Pandoc.Lua.Module.Utils (Albert Krewinkel)
Test AST object equality via Haskell (#5092). Equality of Lua objects representing pandoc AST elements is tested by unmarshalling the objects and comparing the result in Haskell. A new function equals which performs this test has been added to the pandoc.utils module.
Improve stringify. Meta value strings (MetaString) and booleans (MetaBool) are now converted to the literal string and the lowercase boolean name, respectively. Previously, all values of these types were converted to the empty string.
Text.Pandoc.Parsing: Remove Functor and Applicative constraints where Monad already exists (Alexander Krotov).
Text.Pandoc.Pretty: Don’t render BreakingSpace at end of line or beginning of line (#5050).
Text.Pandoc.Readers.Markdown
Fix parsing of citations, quotes, and underline emphasis after symbols. Starting with pandoc 2.4, citations, quoted inlines, and underline emphasis were no longer recognized after certain symbols, like parentheses (#5099, #5053).
In pandoc 2.4, a soft break after an abbreviation would be relocated before it to allow for insertion of a nonbreaking space after the abbreviation. This behavior is here reverted. A soft break after an abbreviation will remain, and no nonbreaking space will be added. Those who care about this issue should take care not to end lines with an abbreviation, or to insert nonbreaking spaces manually.
Text.Pandoc.Readers.FB2: Do not throw error for unknown elements in <body> (Alexander Krotov). Some libraries include custom elements in their FB2 files.
Text.Pandoc.Readers.HTML
Allow tfoot before body rows (#5079).
Parse <small> as a Span with class “small” (#5080).
Allow thead containing a row with td rather than th (#5014).
Text.Pandoc.Readers.LaTeX
Cleaned up handling of dimension arguments. Allow decimal points, preceding space.
Don’t allow arguments for verbatim, etc.
Allow space before bracketed options.
Allow optional arguments after \ in tables.
Improve parsing of tiny, scriptsize, etc. Parse as raw, but know that these font changing commands take no arguments.
Text.Pandoc.Readers.Muse
Trim whitespace before parsing grid table cells (Alexander Krotov).
Add grid tables support (Alexander Krotov).
Text.Pandoc.Shared
For bibliography match Div with id refs, not class references. This was a mismatch between pandoc’s docx, epub, latex, and markdown writers and the behavior of pandoc-citeproc, which actually looks for a div with id refs rather than one with class references.
Exactly match GitHub’s identifier generating algorithm (#5057).
Add parameter for Extensions to uniqueIdent and inlineListToIdentifier (#5057). [API change] This allows these functions to be sensitive to the settings of Ext_gfm_auto_identifiers and Ext_ascii_identifiers, and allows us to use uniqueIdent in the CommonMark reader, replacing custom code. It also means that gfm_auto_identifiers can now be used in all formats.
Text.Pandoc.Writers.AsciiDoc
Use .+ as list markers to support nested ordered lists (#5087).
Support list number styles (#5089).
Render Spans using [#id .class]#contents# (#5080).
Text.Pandoc.Writers.CommonMark
Respect --ascii (#5043, quasicomputational).
Make sure --ascii affects quotes, super/subscript.
Text.Pandoc.Writers.Docx
Fix bookmarks to headers with long titles (#5091). Word has a 40 character limit for bookmark names. In addition, bookmarks must begin with a letter. Since pandoc’s auto-generated identifiers may not respect these constraints, some internal links did not work. With this change, pandoc uses a bookmark name based on the SHA1 hash of the identifier when the identifier isn’t a legal bookmark name.
Add bookmarks to code blocks (Nikolay Yakimov).
Add bookmarks to images (Nikolay Yakimov).
Refactor common bookmark creation code into a function (Nikolay Yakimov).
Text.Pandoc.Writers.EPUB: Handle calibre metadata (#5098). Nodes of the form
<meta name="calibre:series" content="Classics on War and Politics"/>
Are now included from an epub XML metadata file. You can also include this information in your YAML metadata, like so:
Calibre:
Series: Classics on War and Policitics
In addition, ibooks-specific metadata can now be included via an XML file. (Previously, it could only be included via YAML metadata, see #2693.)
Text.Pandoc.Writers.HTML: Use plain " instead of " outside of attributes.
Text.Pandoc.Writers.ICML: Consolidate adjacent strings, inc. spaces. This avoids splitting up the output unnecessarily into separate elements.
Text.Pandoc.Writers.LaTeX: Don’t emit [<+->] unless beamer output, even if writerIncremental is True (#5072).
Text.Pandoc.Writers.Muse (Alexander Krotov).
Output tables as grid tables if they have multi-line cells.
Output tables with one column as grid tables.
Add support for --reference-location.
Internal improvements.
Text.Pandoc.Writers.OpenDocument: Fix list indentation (Nils Carlson, #5095). This was a regression in pandoc 2.4.
Text.Pandoc.Writers.RTF: Fix warnings for skipped raw inlines.
Text.Pandoc.Writers.Texinfo: Add blank line before @menu section (#5055).
Text.Pandoc.XML: in toHtml5Entities, prefer shorter entities when there are several choices for a particular character.
Data/abbreviations
Add additional abbreviations (Andrew Dunning) Many of these borrowed from the Chicago Manual of Style 10.42, ‘Scholarly abbreviations’.
Templates
Asciidoc template: add :lang: to title header is lang is set in metadata (#5088).
Pandoc.cabal: Add cabal flag derive_json_via_th (Albert Krewinkel) Disabling the flag will cause derivation of ToJSON and FromJSON instances via GHC Generics instead of Template Haskell. The flag is enabled by default, as deriving via Generics can be slow (see #4083).
Trypandoc:
Tweaked drop-down lists.
Put link to site in footer.
Preselect output format.
Update on change of in or out format.
Add man input format.
MANUAL.txt:
Fix outdated description of latex_macros extension.
Clarified placement of bibliography.
Added “A note on security.”
Fix note on curly brace syntx for locators.
Document new explicit syntax for citeproc locators.
Remove confusing cross-links for some extensions.
Don’t put pandoc in code ticks in heading.
Document that --ascii works for gfm and commonmark too.
Add man to --from options.
Doc/customizing-pandoc.md: various improvements (Mauro Bieg).

New in Pandoc 2.4 (Nov 4, 2018)

New in Pandoc 2.3.1 (Sep 29, 2018)

RST reader:
Parse RST inlines containing newlines (#4912, Francesco Occhipinti). This eliminates a regression introduced after pandoc 2.1.1, which caused inline constructions containing newlines not to be recognized.
Fix bug with internal link targets (#4919). They were gobbling up indented content underneath.
Markdown reader:
Distinguish autolinks in the AST. With this change, autolinks are parsed as Links with the uri class. (The same is true for bare links, if the autolink_bare_uris extension is enabled.) Email autolinks are parsed as Links with the email class. This allows the distinction to be represented in the AST.
Org reader:
Force inline code blocks to honor export options (Brian Leung).
Parse empty argument array in inline src blocks (Brian Leung).
Muse reader (Alexander Krotov):
Added additional tests.
Do not allow code markup to be followed by digit.
Remove heading level limit.
Simplify <literal> tag parsers
Parse Text instead of String. Benchmark shows 7% improvement.
Get rid of HTML parser dependency.
Various code improvements.
ConTeXt writer:
Change to / in Windows image paths (#4918). We do this in the LaTeX writer, and it avoids problems. Note that / works as a LaTeX path separator on Windows.
LaTeX writer:
Add support for multiprenote and multipostnote arguments with --biblatex (Brian Leung, #4930). The multiprenotes occur before the first prefix of a multicite, and the multipostnotes follow the last suffix.
Fix a use of last that might take empty list. If you ran with --biblatex and have an empty document (metadata but no blocks), pandoc would previously raise an error because of the use of last on an empty list.
RTF writer:
Fix build failure with ghc-8.6.1 caused by missing MonadFail instance (Jonas Scholl).
ODT Writer:
Improve table header row style handling (Nils Carlson). This changes the way styles for cells in the header row and normal rows are handled in ODT tables. Previously a new (but identical) style was generated for every table, specifying the style of the cells within the table. After this change there are two style definitions for table cells, one for the cells in the header row, one for all other cells. This doesn’t change the actual styles, but makes post-processing changes to the table styles much simpler as it is no longer necessary to introduce new styles for header rows and there are now only two styles where there was previously one per table.
HTML writer:
Don’t add uri class to presumed autolinks. Formerly the uri class was added to autolinks by the HTML writer, but it had to guess what was an autolink and could not distinguish [http://example.com](http://example.com) from <http://example.com>. It also incorrectly recognized [pandoc](pandoc) as an autolink. Now the HTML writer simply passes through the uri attribute if it is present, but does not add anything.
Avoid adding extra section nestings for revealjs. Previously revealjs title slides at level (slidelevel - 1) were nested under an extra section element, even when the section contained no additional (vertical) content. That caused problems for some transition effects.
Omit unknown attributes in EPUB2 output. For example, epub:type attributes should not be passed through, or the epub produced will not validate.
JATS writer:
Remove ‘role’ attribute on ‘bold’ and ‘sc’ elements (#4937). The JATS spec does not allow these.
Textile writer:
Don’t represent uri class explicitly for autolinks (#4913).
Lua filters (Albert Krewinkel):
Cleanup filter execution code.
Better error on test failure.
HTML, Muse reader tests: reduce time taken by round-trip test.
Added cabal.project.
MANUAL: epub:type is only useful for epub3 (Maura Bieg).
Use hslua v1.0.0 (Albert Krewinkel).
Fix translations/ru to use modern Russian orthography (Ivan Trubach).
Build Windows binary using ghc 8.6.1 and cabal new-build. This fixes issues with segfaults in the 32-bit Windows binaries (#4283).

New in Pandoc 2.3 (Sep 17, 2018)

Add --metadata-file option (Mauro Bieg, #1960), which allows users to specify metadata in a YAML file, regardless of the input format (#1960).
Text.Pandoc.Writers.Shared: export isDisplayMath (API change).
Text.Pandoc.Readers.Markdown: export yamlToMeta (API change, Mauro Bieg).
Text.Pandoc.Readers.LaTeX.Types:
New type ArgSpec (API change).
Second parameter of Macro constructor is now [ArgSpec] instead of Int (API change).
Markdown reader:
Use tex instead of latex for raw tex-ish content. We can’t always tell if it’s LaTeX, ConTeXt, or plain TeX. Better just to use tex always. Note that if context or latex specifically is desired, you can still force that in a markdown document by using the raw attribute. Note that this change may affect some filters, if they assume that raw tex parsed by the Markdown reader will be RawBlock (Format latex). In most cases it should be trivial to modify the filters to accept tex as well.
Refactor and reorganize YAML code (Mauro Bieg).
Make example_lists work for interrupted lists without startnum (#4908).
HTML reader:
Parse <script type="math/tex tags as math (#4877). These are used by MathJax in some configurations.
Extract spaces inside links instead of trimming them (Alexander Krotov, #4845).
Added round-trip tests (Alexander Krotov).
Make parsing sensitive to the raw_tex extension (#1126). This now allows raw LaTeX environments, ref, and eqref to be parsed (which is helpful for translation HTML documents using MathJaX).
Org reader (Albert Krewinkel):
Respect export option p for planning info. Inclusion of planning info (*DEADLINE*, *SCHEDULED*, and *CLOSED*) can be controlled via the p export option: setting the option to t will add all planning information in a Plain block below the respective headline.
Org reader internals: don’t rely on RecordWildCards and ViewPatterns ghc extensions.
Strip planning info from output. Planning info is parsed, but not included in the output (as is the default with Emacs Org-mode, #4867).
LaTeX reader:
Handle parameter patterns for def (#4768, #4771). For example: deffoo#1[#2]{#1 and #2}.
Allow % characters in URLs. This affects href and url (#4832).
Fixed parsing of texorpdfstring. We were returning the wrong argument as the content.
Support blockcquote, foreignblockquote, foreigncblockquote, hyphenblockquote, hyphencblockquote, enquote*, foreignquote, hyphenquote from csquotes (#4848). Note that foreignquote will be parsed as a regular Quoted inline (not using the quotes appropriate to the foreign language).
Support more text-mode accents (#4652). Add support for |, b, G, h, d, f, r, t, U, i, j, newtie, textcircled. Also fall back to combining characters when composed characters are not available.
Resolve ref for figure numbers.
Support mintinline (#4365, Marc Schreiber).
Fix siunitx unit commands so they are only recognized in siunitx contexts (#4842). For example, l outside of an siunitx context should be l-slash, not l (for liter).
Fix double unnumbered class (#4838). The unnumbered class was being included twice for starred sections.
RST reader:
Don’t skip link definitions after comments (#4860).
Muse reader (Alexander Krotov):
Close the </quote> in indented tag test. There is already a separate test for unclosed </quote>.
Autonumber sections in the correct order. Parsing now stops at each section header to ensure the header is registered before parsing of the next section starts.
Move duplicate code into headingStart function.
Allow newline after opening * or **.
Don’t allow digits after closing marker in lightweight markup This change makes reader more compatible with Emacs Muse.
Parse <verse> tag in one pass instead of using parseFromString. This change makes it possible to have verbatim </verse> tag inside verse.
ODT reader: Deal gracefully with missing <office:font-face-decls/> (#4336). This allows pandoc to parse ODT document produced by KDE’s Calligra.
Muse writer (Alexander Krotov):
Output headers without asterisks if not on the top level.
Never wrap definition list terms.
Set envInsideBlock = True when rendering notes.
Use "" instead of [] for empty String.
Check for whitespace in the beginning and end of Str’s.
Escape -, ; and > in the beginning of strings.
Escape list markers in the beginning of notes.
Normalize inline list before testing if tags should be used.
Use tags instead of lightweight markup for empty strings.
Use lightweight markup when possible.
Escape empty strings. This guarantees that conditionalEscapeString never returns empty string.
Wrap conditionalEscapeString result into Muse type. This removes the need to pass envInsideLinkDescription to it.
Separate shouldEscapeString function.
Simplify inline list rendering.
Replace newlines in strings with spaces.
Docx writer:
Add MetaString case for abstract, subtitle (#4900, Mauro Bieg).
Properly handle display math in spans (#4826). This isn’t a complete solution, since other nestings of display math may still cause problems, but it should work for what is by far the most common case.
HTML writer:
Always output <dt> element, even if it is empty (#4883, Alexander Krotov).
Don’t prefix epub: attributes with data-.
Org writer: Don’t escape literal _, ^ (#4882). Org doesn’t recognize these escapes.
ODT writer: Fix percentage image scaling (#4881, Nils Carlson). Image scaling was broken when a width was set to a percentage.
EPUB writer: set epub:type on body element in each chapter, depending on the epub:type of the first section (#4823). This only affects epub3. See http://www.idpf.org/epub/profiles/edu/structure/#h.l0bzsloklt10
FB2 writer: put coverpage element between title and date rather than in document-info element (#4854).
Markdown writer: Escape ~ if strikeout extension enabled (#4840).
Haddock writer: Use proper format for latex math in haddock (#4571, Joe Hermaszewski). Inline math in (..), display math in [..], tex is now used. Previously we’d “fake it with unicode” and fall back to tex when that didn’t work. But newer haddock versions support latex math.
TEI writer:
Ensure that title element is always present, even if empty (#4839).
Put author tags in the template, rather than adding them in the writer (#4839).
LaTeX writer/template: be sensitive to filecolor variable (#4822). linkcolor only affects internal links, and urlcolor only affects linked URLs. For external links, the option to use is filecolor.
ConTeXt writer: output raw tex blocks as well as context (#969).
RST writer:
Use .. raw:: latex for tex content.
Use .. container for generic Divs, instead of raw HTML.
Render Divs with admonition classes as admonitions (#4833). Also omit Div with class admonition-title. These are generated by the RST reader and should be omitted on round-trip.
Text.Pandoc.PDF: fix message printed when rsvg-convert is not available (#4855, Antonio Terceiro).
HTML5 template: add the title-block-header identifier to the header element, to make it easier to style precisely (#4767, J. B. Rainsberger).
OpenDocument template: Remove unnecessary indenting of TOC title (#4798, José de Mattos Neto).
latex template: Add support for (toc-title) to LaTeX (and PDF) (#4853, Wandmalfarbe).
TEI template: improve publicationStmt. Add support for publisher, address, pubPlace, and date variables.
beamer template: Support “toc-title” (#4835, Cyril Roelandt).
Text.Pandoc.Extensions: Fix haddock on Ext_footnotes (Chris Martin).
Lua: cleanup Lua utils, remove unused functions (Albert Krewinkel).
MANUAL.txt:
Clarify that --biblatex/--natbib don’t work directly for PDF (#4904).
Document epub:type attribute (Mauro Bieg, #4901)
Clarify when --resource-path has an effect.
More detail on customization in syntax highlighting section.
Document encoding issue with --listings (#4871, Damien Clochard).
Remove docs on removed --katex-stylesheet (Mauro Bieg, #4862).
Use https for context wiki links (#4910).
CONTRIBUTING.md:
Link to lua-filters repository (#4874).
Fix mistake in REPL instructions for stack. (#4849, Brian Leung).
lua-filters.md: add links to filters, and to lua-filters repository (#4874).
INSTALL.md:
Indicate that cabal >= 2.0 is needed.
Added chocolatey installation method (#4844, Miodrag Milić).
Travis: exclude round-trip tests, except for nightly test which can fail.
Use latest texmath, pandoc-citeproc.
Use a patched version of foundation until haskell-foundation/foundation#503 is fixed.
Clean up appveyor build and Windows package creation. We now use 64-bit stack and ghc 8.4.3, lts-12 for the 64-bit build. The WiX-based msi is now 64-bit for 64-bit builds (fixing #4795).
Remove obsolete RELEASE-CHECKLIST.md.
Added additional compiler warnings in Makefile and CI builds.

New in Pandoc 2.2.3.2 (Aug 8, 2018)

New in Pandoc 2.2.3.1 (Aug 7, 2018)

New in Pandoc 2.2.3 (Aug 6, 2018)

RST reader: improve parsing of inline interpreted text roles (#4811):
Use a Span with class “title-reference” for the default title-reference role.
Use B.text to split up contents into Spaces, SoftBreaks, and Strs for title-reference.
Use Code with class “interpreted-text” instead of Span and Str for unknown roles. (The RST writer has also been modified to round-trip this properly.)
Disallow blank lines in interpreted text.
Backslash-escape now works in interpreted text.
Backticks followed by alphanumerics no longer end interpreted text.
Remove support for nested inlines (Francesco Occhipinti). RST does not allow nested emphasis, links, or other inline constructs. This fixes several bugs (#4581, #4561, #4792).
Org reader: fix parsers relying on parseFromString (#4784, Albert Krewinkel). Emphasis was not parsed when it followed directly after some block types (e.g., lists).
Markdown reader: Allow unquoted numbers and booleans as YAML mapping keys. Previously in 2.2.2 you could not do
---
0: bar
...
but only
---
'0': bar
...
With this change, both forms work.
DocBook reader: metadata handling improvements. Now we properly parse title and subtitle elements that are direct children of book and article (as well as children of bookinfo, articleinfo, or info). We also now use the subtitle metadata field for subtitles, rather than tacking the subtitle on to the title.
RST writer:
Allow images to be directly nested within links (#4810, Francesco Occhipinti).
Use titleblock instead of title variable for title block (#4803, Francesco Occhipinti). titleblock contains a properly formatted title and subtitle (using top-level headers). title and subtitle variables are still available and just contain the title and subtitle text. Note that this change will require an update to custom rst templates.
Render Code with class “interpreted-text” as interpreted text role.
MediaWiki writer: Avoid extra blank line in tables with empty cells (#4794). Note that the old output is semantically identical, but the new output looks better.
Lua Utils module: add function blocks_to_inlines (#4799, Albert Krewinkel). Exposes a function converting which flattenes a list of blocks into a list of inlines. An example use case would be the conversion of Note elements into other inlines.
RST template: use titleblock instead of title. Users of custom RST templates will want to update this.
LaTeX template: Moved some beamer code in default.latex template. This change allows beamer themes to change the template and font (as Metropolis does) (#4450).
Better error message on -t pdf -o out.pdf (#1155, Mauro Bieg).
Added test case for #4669 to repository.
INSTALL.md: Fix broken link for cabal-install (#4806, ChanHoHo).
MANUAL.txt:
Add beamer info for slide backgrounds (#4802, John Muccigrosso).
Clarify when csquotes is used in LaTeX writer (#4514).
Add commonmark to list of output formats where raw_tex has an effect (see #4527).

New in Pandoc 2.2.2.1 (Jul 20, 2018)

New in Pandoc 2.2.2 (Jul 16, 2018)

Use HsYAML instead of yaml for translations and YAML metadata (#4747). yaml wraps a C library; HsYAML is pure Haskell. Advances #4535.
Note: HsYAML implements YAML 1.2, in which the valid true values are true, True, TRUE. This means a change in the semantics of YAML metadata that could affect users: y, yes, and on no longer count as true values.
Fix regression: make --pdf-engine work with full paths (#4681, Mauro Bieg).
CommonMark reader: Handle ascii_identifiers extension (#4742, Anders Waldenborg). Non-ascii characters were not stripped from identifiers even if the ascii_identifiers extension was enabled (which is is by default for gfm).
TikiWiki reader: Improve list parsing (#4722, Mauro Bieg). Remove trailing Space from list items. Parse lists that have no space after marker.
LaTeX reader:
Treat lilypond as a verbatim environment (#4725).
Parse figure label into Image id (#4700, Mauro Bieg).
Beamer: Allow “noframenumbering” option (#4696, Raymond Ehlers).
Allow spaces around graphicspath arguments (#4698).
Handle includes without surrounding blanklines (#4553). In addition, input can now be used in an inline context, e.g. to provide part of a paragraph, as it can in LaTeX.
In rawLaTeXBlock, handle macros that resolve to a begin or end (#4667).
In rawLaTeXBlock, don’t expand macros in macro definitions (#4653). Note that this only affected LaTeX in markdown.
Tighten up reading of beamer overlay specifications (#4669). Ideally we’d turn these on only when reading beamer, but currently beamer is not distinguished from latex as an input format. This commit also activates parsing of overlay specifications after commands in general (e.g. item), since they can occur in many contexts in beamer.
Parse more siunitx unit commands (#4296, #4773).
Be more forgiving in key/value option parsing (#4761).
Markdown reader:
Allow empty code spans, e.g. ` `.
Emojis are now wrapped in Spans with class emoji and attribute data-emoji (Anders Waldenborg, #4743). This allows the writer to handle them in a special way (e.g. using a special font, or just rendering the emoji name).
Muse reader (Alexander Krotov, except where indicated):
Get rid of non-exhaustive pattern match warning (Mauro Bieg).
Add support for floating images.
Add support for images with specified width.
Parse image URLs without “guard” and “takeExtension”.
Split link and image parsing into separate functions.
Parse links starting with “URL:” explicitly instead of trying to strip “URL:” prefix after parsing.
Texinfo writer: Use @sup and @sub instead of custom macros (#4728, Alexander Krotov).
Markdown writer: Preserve implicit_figures with attributes, even if implicit_attributes is not set, by rendering in raw HTML (#4677).
Markdown and commonmark/github writers now respect the emoji extension. So, -f markdown+emoji -t markdown+emoji now leaves :smile: as :smile: rather than converting it to a smile character.
Docx writer: Be sensitive to toc in YAML metadata (#4645).
ODT/OpenDocument writer: Make internal links work (#4358). This adds proper bookmarks to the headers with non-null IDs.
EPUB writer: Properly escape pagetitle. Previously we weren’t escaping & and other XML characters in the pagetitle, so a title containing a & would be invalid.
AsciiDoc Writer: Eescape square brackets at start of line (#4545, Mauro Bieg).
RST writer:
Don’t treat ‘example’ as a syntax name (#4748). This fixes conversions from org with example blocks.
Support --number-sections via the section-numbering directive in standalone output.
reveal.js writer and template: reuse mathjax URL provided by the argument to --mathjax or the normal pandoc default, rather than a hard-coded one in the template (#4701).
LaTeX writer:
Properly handle footnotes in table captions (#4683). Refactored code from figure captions to use in both places.
In beamer output, fix single digit column percentage (#4690, Mauro Bieg).
FB2 writer (Alexander Krotov):
Convert Plain to Para in annotation (#2424).
Fix order of items in title-info (#2424).
Custom writer: fix error message on script failure (Albert Krewinkel). Error messages produced by Lua were not displayed by Pandoc.
Text.Pandoc.Emoji now exports emojiToInline, which returns a Span inline containing the emoji character and some attributes with metadata (class emoji, attribute data-emoji with emoji name). (API change, Anders Waldenborg, #4743).
Text.Pandoc.PDF:
Revert fix for #4484 (only compress images on last run, #4755). This will mean some increase in the time it takes to produce an image-heavy PDF with xelatex, but it will make tables of contents correct, which is more important.
Fix logic error in runTeXProgram. We were running the tex program one more time than requested. This should speed up PDF production.
Allow --template to take a URL as argument.
Text.Pandoc.Highlighting: Add missing re-export of breezeDark highlighting style (#4687, Adrian Sieber, API change).
Clarify macOS install in INSTALL.md (#4661). Make the binary package installer the recommended method, and note that on some older versions of macOS, homebrew installs from source and takes a lot of disk space (#4664, Ian).
MANUAL:
Clarify EPUB linked media (#4756, Mauro Bieg)
Update manual for “true” YAML values. Now that we’re using HsYAML and YAML 1.2, the valid true values are true, True, TRUE. NOTE! y, yes, on no longer count as true values.
Document -F as alias for --filter (thanks to Gandalf Saxe).
Update manual on how math is rendered in LaTeX.
Add proxy description (#4131, Mauro Bieg).
Clarify that --toc requires --standalone (#4703).
Update citation styles link (#4699, wiefling).
In API docs, clarify how Ext_east_asian_line_breaks extension works (kaizshang91). Note that it will not take effect when readers/writers are called as libraries (#4674).
Improved translations/fr (#4766, lux-lth).
Removed inadvertently added .orig files from repository (#4648).
Remove network-uri flag and use ‘Network.Socket’. This removes a compiler warning. There is no need for the old network-uri flag, since network 2.6 was released in 2014.
Add stack.lts10.yaml, stack.lts11.yaml. use lts-12 in stack.yaml.
Bump upper bounds for dependent packages.
Exclude foundation 0.0.21 for ghc 7.10. Otherwise cabal gets confused because of the way ghc 7.10 is excluded in foundation’s cabal file. This can be removed when haskell-foundation/foundation#500 is fixed.
Require cabal-version >= 2.0. This is needed for haddock-library.

New in Pandoc 2.2.1 (May 12, 2018)

Restored and undeprecated gladtex for HTML math (#4607):
Added GladTeX constructor to Text.Pandoc.Options.HTMLMathMethod [API change, reverts removal in v2.2]
Restored and undeprecated --gladtex option, removed in v2.2.
LaTeX reader: Handle $ in /text{..} inside math (#4576).
Org reader: Fix image filename recognition (Albert Krewinkel). Use a function from the filepath library to check whether a string is a valid file name. The custom validity checker that was used before gave wrong results (e.g. for absolute file paths on Windows, kawabata/ox-pandoc#52).
FB2 reader: Replace some errors with warnings (Alexander Krotov).
HTML writer:
Strip links from headers when creating TOC (#4340). Otherwise the TOC entries will not link to the sections.
Fix regression with tex math environments in HTML + MathJax (#4639).
Muse writer (Alexander Krotov): Add support for left-align and right-align classes (#4542).
Docx writer: Support underline (#4633).
Text.Pandoc.Parsing: Lookahead for non-whitespace after singleQuoteStart and doubleQuoteStart (#4637).
test-pandoc-utils.lua: more robust testing on both windows and *nix. Previously the pipe tests were only run if bin/false and /bin/sed were present, which they aren’t in default MacOS and Windows systems. Fixed by using tr and false, which should always be in the path on a *nix system, and find and echo for Windows.
Text.Pandoc.Shared: add uriPathToPath. This adjusts the path from a file: URI in a way that is sensitive to Windows/Linux differences. Thus, on Windows, /c:/foo gets interpreted as c:/foo, but on Linux, /c:/foo gets interpreted as /c:/foo. See #4613.
Use uriPathToPath with file: URIs (#4613).
Revert piping HTML to pdf-engine (Mauro Bieg, #4413). Use a temp file as before.
Text.Pandoc.Class: Catch IO errors when writing media files and issue a warning, rather than an error (Francesco Occhipinti, #4559).
Don’t lowercase custom writer filename (Alexander Krotov, #4610).
MANUAL (Mauro Bieg):
Clarify truthiness in template variables (#2281).
Clarify pipe table width calculation (#4520).
ConTeXt template: New Greek fallback typeface (Pablo Rodríguez, #4405). CMU Serif gives better typographic results than the previous Greek fallback DejaVu Serif.
Make HTML template polyglot (#4606, OvidiusCicero), by making <link rel="stylesheet" href="$css$"> self-closing.
Use texmath 0.11, allowing better translation of non-ASCII characters in math (#4642).

New in Pandoc 2.2 (Apr 28, 2018)

New input format: fb2 (FictionBook2) (Alexander Krotov).
Make --ascii work for all XML formats (ICML, OPML, JATS,…), and for ms and man.
Remove deprecated --latexmathml, --gladtex, --mimetex, --jsmath, -m, --asciimathml options.
New module Text.Pandoc.Readers.FB2, exporting readFB2 (Alexander Krotov, API change).
Markdown reader:
Allow empty key-value attributes, like title="" (#2944).
Handle table w/o following blank line in fenced div (#4560).
Remove “fallback” for doubleQuote parser. Previously the parser tried to be efficient – if no end double quote was found, it would just return the contents. But this could backfire in a case **this should "be bold**, since the fallback would return the content "be bold** and the closing boldface delimiter would never be encountered.
Improve computation of the relative width of the last column in a multiline table, so we can round-trip tables without constantly shrinking the last column.
EPUB reader:
Fix images with space in file path (#4344).
LaTeX reader:
Properly resolve section numbers with ref and chapters (#4529).
Parse sloppypar environment (#4517, Marc Schreiber).
Improve handling of raw LaTeX (for markdown etc.) (#4589, #4594). Previously there were some bugs in how macros were handled.
Support MakeUppercase, MakeLowercase',, lowercase, and also MakeTextUppercase and MakeTextLowercase from textcase (#4959).
Textile reader:
Fixed tables with no body rows (#4513). Previously these raised an exception.
Mediawiki reader:
Improve table parsing (#4508). This fixes detection of table attributes and also handles ! characters in cells.
DocBook reader:
Properly handle title in section element (#4526). Previously we just got section_title for section (though sect1, sect2, etc. were handled properly).
Read tex math as output by asciidoctor (#4569, Joe Hermaszewski).
Docx reader:
Combine adjacent CodeBlocks with the same attributes into a single CodeBlock. This prevents a multiline codeblock in Word from being read as different paragraphs.
RST reader:
Allow < 3 spaces indent under directives (#4579).
Fix anonymous redirects with backticks (#4598).
Muse reader (Alexander Krotov):
Add support for Text::Amuse multiline headings.
Add <math> tag support.
Add support for <biblio> and <play> tags.
Allow links to have empty descriptions.
Require block <literal> tags to be on separate lines.
Allow - in anchors.
Allow verse to be indented.
Allow nested footnotes.
Internal improvements.
Muse writer (Alexander Krotov):
Escape > only at the beginning of a line.
Escape ] in image title.
Escape ] brackets in URLs as %5D.
Only escape brackets when necessary.
Escape ordered list markers.
Do not escape list markers unless preceded by space.
Escape strings starting with space.
Escape semicolons and markers after line break.
Escape ; to avoid accidental comments.
Don’t break headers, line blocks and tables with line breaks.
Correctly output empty headings.
Escape horizontal rule only if at the beginning of the line.
Escape definition list terms starting with list markers.
Place header IDs before header.
Improve span writing.
Do not join Spans in normalization.
Don’t align ordered list items.
Remove key-value pairs from attributes before normalization.
Enable --wrap=preserve for all tests by default.
Reduced <verbatim> tags in output.
Internal changes.
RST writer:
Use more consistent indentation (#4563). Previously we used an odd mix of 3- and 4-space indentation. Now we use 3-space indentation, except for ordered lists, where indentation must depend on the width of the list marker.
Flatten nested inlines (#4368, Francesco Occhipinti). Nested inlines are not valid RST syntax, so we flatten them following some readability criteria discussed in #4368.
EPUB writer:
Ensure that pagetitle is always set, even when structured titles are used. This prevents spurious warnings about empty title elements (#4486).
FB2 writer (Alexander Krotov):
Output links inline instead of producing notes. Previously all links were turned into footnotes with unclickable URLs inside.
Allow emphasis and notes in titles.
Don’t intersperse paragraph with empty lines.
Convert metadata value abstract to book annotation.
Use <empty-line /> for HorizontalRule rather thanLineBreak. FB2 does not have a way to represent line breaks inside paragraphs; previously we used<empty-line /> elements, but these are not allowed inside paragraphs.
Powerpoint writer (Jesse Rosenthal):
Handle Quoted Inlines (#4532).
Simplify code with ParseXml.
Allow fallback options when looking for placeholder type.
Check reference-doc for all layouts.
Simplify speaker notes logic.
Change notes state to a simpler per-slide value.
Remove Maybe from SpeakerNotes in Slide. mempty means no speaker notes.
Add tests for improved speaker notes.
Handle speaker notes earlier in the conversion process.
Keep notes with related blocks (#4477). Some blocks automatically split slides (imgs, tables, column divs). We assume that any speaker notes immediately following these are connected to these elements, and keep them with the related blocks, splitting after them.
Remove docProps/thumbnail.jpeg in data dir (Jesse Rosenthal, #4588). It contained a nonfree ICC color calibration profile and is not needed for production of a powerpoint document.
Markdown writer:
Include a blank line at the end of the row in a single-row multiline table, to prevent it from being interpreted as a simple table (#4578).
CommonMark writer:
Correctly ignore LaTeX raw blocks when raw_tex is not enabled (#4527, quasicomputational).
EPUB writer:
Add epub:type="footnotes" to notes section in EPUB3 (#4489).
LaTeX writer:
In beamer, don’t use format specifier for default ordered lists (#4556). This gives better results for styles that put ordered list markers in boxes or circles.
Update lstinline delimiters (#4369, Tim Parenti).
Ms writer:
Use f[R] rather than f[] to reset font (#4552).
Use f[BI] and f[CB] in headers, instead of f[I] and f[C], since the header font is automatically bold (#4552).
Use f[CB] rather than f[BC] for monospace bold (#4552).
Create pdf anchor for a Div with an identifier (#4515).
Escape / character in anchor ids (#4515).
Improve escaping for anchor ids: we now use uNNN instead of uNNN to avoid ambiguity.
Man writer:
Don’t escape U+2019 as ' (#4550).
Text.Pandoc.Options:
Removed JsMath, LaTeXMathML, and GladTeX constructors from Text.Pandoc.Options.HTMLMathMethod [API change].
Text.Pandoc.Class:
writeMedia: unescape URI-escaping in file path. This avoids writing things like file%20one.png to the file system.
Text.Pandoc.Parsing:
Fix romanNumeral parser (#4480). We previously accepted ‘DDC’ as 1100.
uri: don’t treat * characters at end as part of URI (#4561).
Text.Pandoc.MIME:
Use the alias application/eps for EPS (#2067). This will ensure that we retain the eps extension after reading the image into a mediabag and writing it again.
Text.Pandoc.PDF:
Use withTempDir in html2pdf.
With xelatex, don’t compress images til the last run (#4484). This saves time for image-heavy documents.
Don’t try to convert EPS files (#2067). `pdflatex converts them itself, and JuicyPixels can’t do it.
For pdflatex, use a temp directory in the working directory. Otherwise we can have problems with the EPS conversion pdflatex tries to do, which can’t operate on a file above the working directory without --shell-escape.
Changes to tests to accommodate changes in pandoc-types. In jgm/pandoc-types#36 we changed the table builder to pad cells. This commit changes tests (and two readers) to accord with this behavior.
Set default extensions for beamer same as latex.
LaTeX template:
Add beameroption variable (#4359, Étienne Bersac).
Use pgfpages package; this is needed for notes on second screen in beamer (Étienne Bersac).
Add background-image variable (#4601, John Muccigrosso).
reveal.js template: Add background-image variable (#4600, John Muccigrosso).
ms template: Fix date. Previously .ND was used, but this only works if you have a title page, which we don’t. Thanks to @teoric.
Removed pragmas for unused extensions (#4506, Anabra).
Fix bash completion for --print-default-data-file (#4549). Previously this looked in the filesystem, even if pandoc was compiled with embed_data_files (and sometimes it looked in a nonexistent build directory). Now the bash completion script just includes a hard-coded list of data file names.
MANUAL:
Clarify template vs metadata variables (#4501, Mauro Bieg).
Fix raw content example (#4479, Mauro Bieg).
Specify that you use html for raw output in epub.
Add examples for raw docx blocks (#4472, Tristan Stenner). The documentation states that the target format name should match the output format, which isn’t the case for docx/openxml and some others.
Don’t say that empty_paragraphs affects markdown output (#4540).
Consolidate input/output format documentation (#4577, Mauro Bieg).
New README template. Take in/out formats from manual.
Fix example in lua-filters docs (#4459, HeirOfNorton).
Use the -threaded GHC flag when building benchmarks (#4587, Francesco Occhipinti).
Bump temporary upper bound to 1.4.
Use pandoc-citeproc 0.14.3.1.
Use texmath-0.10.1.2 (fixes escapes in math in ms, #4597).
Removed old lib directory. This was used for something long ago, but plays no role now.
Removed unneeded data file LaTeXMathML.js.
Create 64- and 32-bit versions of Windows binary packages.

New in Pandoc 2.1.3 (Mar 19, 2018)

Docx reader (Jesse Rosenthal):
Add tests for nested smart tags.
Parse nested smart tags.
Make unwrapSDT into a general unwrap function that can unwrap both nested SDT tags and smartTags. This makes the SmartTags constructor in the Docx type unnecessary, so we remove it (#4446).
Remove unused docxWarnings (Alexander Krotov).
RST reader: Allow unicode bullet characters (#4454).
Haddock reader: Better table handling, using haddock-library’s new table support, if compiled against a version that includes it. Note that tables with col/rowspans will not translate well into Pandoc.
Muse reader (Alexander Krotov):
Various internal improvements.
Require closing tag to have the same indentation as opening.
Do not reparse blocks inside unclosed block tag (#4425).
Parse <class> tag (supported by Emacs Muse).
Do not produce empty Str element for unindented verse lines.
LaTeX reader:
Add support to parse unit string of SI command (closes #4296, Marc Schreiber).
Haddock writer: In the writer, we now render tables always as grid tables, since Haddock supports these.
DokuWiki writer: rewrite backSlashLineBreaks (#4445, Mauro Bieg).
Docx writer: Fixed formatting of DefaultStyle ordered lists in docx writer. We want decimal for the top level, not lower roman.
RST writer:
Strip whitespace at beginning and ending of inline containers (#4327, Francesco Occhipinti).
Filter out empty inline containers (#4434). There is nothing in RST that corresponds to e.g. Emph [], so we just ignore elements like this (Francesco Occhipinti).
Muse writer (Alexander Krotov):
Support spans with anchors.
Replace smallcaps with emphasis before normalization.
Output smallcaps as emphasis.
Expand Cite before list normalization.
Write empty inline lists as <verbatim></verbatim>.
Remove empty Str from the beginning of inline lists during normalization.
Escape “-” to avoid creating bullet lists.
Fix math expansion for more than one expression per paragraph.
Expand math before inline list normalization.
Dokuwiki writer: fix LineBreaks in Tables (#4313, Mauro Bieg).
Ms writer:
Asciify pdf anchors, since unicode anchors don’t work (#4436). Internal links should be converted automatically, so this shouldn’t affect users directly.
Don’t escape hyphens as -; that’s for a minus sign (#4467).
Beamer writer: put hyperlink after begin{frame} and not in the title (#4307). If it’s in the title, then we get a titlebar on slides with the plain attribute, when the id is non-null. This fixes a regression in 2.0.
EPUB writer: Remove notes from TOC in nav.xhtml (#4453, Mauro Bieg).
JATS writer: Remove extraneous, significant whitespace (#4335, Nokome Bentley).
html2pdf: inject base tag wih current working directory (#4413, Mauro Bieg). This helps ensure that linked resources are included.
Add Semigroup instances for everything for which we defined a Monoid instance previously (API change):
Text.Pandoc.Class.FileTree.
Text.Pandoc.Translations.Translations.
Text.Pandoc.Extensions.Extensions.
Text.Pandoc.Readers.Odt.StyleReader.Styles.
Text.Pandoc.Pretty.Doc.
Text.Pandoc.MediaBag.MediaBag.
Add custom Prelude to give clean code for Monoid and Semigroup that works with ghc 7.10-8.4. The custom Prelude (prelude/Prelude) is used for ghc versions < 8.4. NoImplicitPrelude is used in all source files, and Prelude is explicitly imported (this is necessary for ghci to work properly with the custom prelude).
Text.Pandoc.Writers.Shared (Francesco Occhipinti):
Export stripLeadingTrailingSpace.
Don’t wrap lines in grid tables when --wrap=none (#4320).
gridTable: Don’t wrap lines in tables when --wrap=none. Instead, expand cells, even if it results in cells that don’t respect relative widths or surpass page column width. This change affects RST, Markdown, and Haddock writers.
Raise error if someone tries to print docx, odt, etc. template (#4441).
LaTeX template: Provide bidi package’s option using PassOptionsToPackage (#4357, Václav Haisman). This avoid a clash when polyglossia loads it first and then it is loaded again for XeLaTeX.
ConTeXt template: Added pdfa variable to generate PDF/A (#4294, Henri Menke). Instructions on how to install the ICC profiles on ConTeXt standalone can be found in the wiki: http://wiki.contextgarden.net/PDFX#ICC_profiles. If the ICC profiles are not available the log will contain error messages.
Use latest pandoc-types, skylighting
Use latest pandoc-citeproc in binary package.
Bump upper bound for time, criterion, haddock-library, exceptions, http-types, aeson, haddock-library.
Bump upper bound tasty-quickcheck 0.10 (#4429, Felix Yan).
pandoc.cabal: fix up other-extensions and language fields. Language is now consistently Haskell2010, and other-extensions is consistently NoImplicitPrelude. Everything else to be specified in the module header as needed.
Removed old-locale flag and Text.Pandoc.Compat.Time. This is no longer necessary since we no longer support ghc 7.8.
Make weigh-pandoc into a benchmark program. Remove weigh-pandoc flag. weigh-pandoc is now built (and run) automatically when you build (and run) benchmarks.
MANUAL: add instructions for background images reveal.js (#4325, John Muccigrosso).
appveyor: use VS 2013 environment instead of VS 2015 for Windows builds.

New in Pandoc 2.1.2 (Mar 3, 2018)

Markdown reader:
Fix parsing bug with nested fenced divs (#4281). Previously we allowed “nonindent spaces” before the opening and closing :::, but this interfered with list parsing, so now we require the fences to be flush with the margin of the containing block.
Commonmark reader:
raw_html is now on by default. It can be disabled explicitly using -f commonmark-raw_html.
Org reader (Albert Krewinkel):
Move citation tests to separate module.
Allow changing emphasis syntax (#4378). The characters allowed before and after emphasis can be configured via #+pandoc-emphasis-pre and #+pandoc-emphasis-post, respectively. This allows to change which strings are recognized as emphasized text on a per-document or even per-paragraph basis. Example:
#+pandoc-emphasis-pre: "-t ('"{"
#+pandoc-emphasis-post: "-tn .,:!?;'")}["
LaTeX reader:
Fixed comments inside citations (#4374).
Fix regression in package options including underscore (#4424).
Make --trace work.
Fixed parsing of tabular* environment (#4279).
RST reader:
Fix regression in parsing of headers with trailing space (#4280).
Muse reader (Alexander Krotov):
Enable <literal> tags even if amuse extension is enabled. Amusewiki disables tags for security reasons. If user wants similar behavior in pandoc, RawBlocks and RawInlines can be removed or replaced with filters.
Remove space prefix from <literal> tag contents.
Do not consume whitespace while looking for closing end tag.
Convert alphabetical list markers to decimal in round-trip test. Alphabetical lists are an addition of Text::Amuse. They are not present in Emacs Muse and can be ambiguous when list starts with “i.”, “c.” etc.
Allow <quote> and other tags to be indented.
Allow single colon in definition list term.
Fix parsing of verse in lists.
Improved parsing efficiency. Avoid parseFromString. Lists are parsed in linear instead of exponential time now.
Replace ParserState with MuseState.
Prioritize lists with roman numerals over alphabetical lists. This is to make sure “i.” starts a roman numbered list, instead of a list with letter “i” (followed by “j”, “k”, …“).
Fix directive parsing.
Parse definition lists with multiple descriptions.
Parse next list item before parsing more item contents.
Fixed a bug: headers did not terminate lists.
Move indentation parsing from definitionListItem to definitionList.
Paragraph indentation does not indicate nested quote. Muse allows indentation to indicate quotation or alignment, but only on the top level, not within a or list.
Require that block tags are on separate lines. Text::Amuse already explicitly requires it anyway.
Fix matching of closing inline tags.
Various internal changes.
Fix parsing of nested definition lists.
Require only one space for nested definition list indentation.
Do not remove trailing whitespace from <code>.
Fix parsing of trailing whitespace. Newline after whitespace now results in softbreak instead of space.
Docx reader (Jesse Rosenthal, except where noted):
Handle nested sdt tags (#4415).
Don’t look up dependant run styles if +styles is enabled.
Move pandoc inline styling inside custom-style span.
Read custom styles (#1843). This will read all paragraph and character classes as divs and spans, respectively. Dependent styles will still be resolved, but will be wrapped with appropriate style tags. It is controlled by the +styles extension (-f docx+styles). This can be used in conjunction with the custom-style feature in the docx writer for a pandoc-docx editing workflow. Users can convert from an input docx, reading the custom-styles, and then use that same input docx file as a reference-doc for producing an output docx file. Styles will be maintained across the conversion, even if pandoc doesn’t understand them.
Small change to Fields hyperlink parser. Previously, unquoted string required a space at the end of the line (and consumed it). Now we either take a space (and don’t consume it), or end of input.
Pick table width from the longest row or header (Francesco Occhipinti, #4360).
Muse writer (Alexander Krotov):
Change verse markup: > instead of <verse> tag.
Remove empty strings during inline normalization.
Don’t indent nested definition lists.
Use unicode quotes for quoted text.
Write image width specified in percent in Text::Amuse mode.
Don’t wrap displayMath into <verse>.
Escape nonbreaking space (~~).
Join code with different attributes during normalization.
Indent lists inside Div.
Support definitions with multiple descriptions.
Powerpoint writer (Jesse Rosenthal):
Use table styles This will use the default table style in the reference-doc file. As a result they will be easier when using in a template, and match the color scheme.
Remove empty slides. Because of the way that slides were split, these could be accidentally produced by comments after images. When animations are added, there will be a way to add an empty slide with either incremental lists or pauses.
Implement syntax highlighting. Note that background colors can’t be implemented in PowerPoint, so highlighting styles that require these will be incomplete.
New test framework for pptx. We now compare the output of the Powerpoint writer with files that we know to (a) not be corrupt, and (b) to show the desired output behavior (details below).
Add notesMaster to presentation.xml if necessary.
Ignore links and (end)notes in speaker notes.
Output speaker notes.
Read speaker note templates conditionally. If there are speaker notes in the presentation, we read in the notesMasters templates from the reference pptx file.
Fix deletion track changes (#4303, Jesse Rosenthal).
Markdown writer: properly escape @ to avoid capture as citation (#4366).
LaTeX writer:
Put hypertarget inside figure environment (#4388). This works around a problem with the endfloat package and makes pandoc’s output compatible with it.
Fix image height with percentage (#4389). This previously caused the image to be resized to a percentage of textwidth, rather than textheight.
ConTeXt writer (Henri Menke):
New section syntax and support --section-divs (#2609). section[my-header]{My Header} -> section[title={My Header},reference={my-header}]. The ConTeXt writer now supports the --section-divs option to write sections in the fenced style, with startsection and stopsection.
xtables: correct wrong usage of caption (Henri Menke).
Docx writer:
Fix image resizing with multiple images (#3930, Andrew Pritchard).
Use new golden framework (Jesse Rosenthal).
Make more deterministic to facilitate testing (Jesse Rosenthal).
getUniqueId now calls to the state to get an incremented digit, instead of calling to P.uniqueHash.
we always start the PRNG in mkNumbering/mkAbstractNum with the same seed (1848), so our randoms should be the same each time.
Fix ids in comment writing (Jesse Rosenthal). Comments from --track-changes=all were producing corrupt docx, because the writer was trying to get id from the (ID,_,_) field of the attributes, and ignoring the “id” entry in the key-value pairs. We now check both.
Ms writer: Added papersize variable.
TEI writer:
Use height instead of depth for images (#4331).
Ensure that id prefix is always used.
Don’t emit role attribute; that was a leftover from the Docbook writer.
Use ‘xml:id’, not ‘id’ attribute (#4371).
AsciiDoc writer:
Do not output implicit heading IDs (#4363, Alexander Krotov). Convert to asciidoc-auto_identifiers for old behaviour.
RST writer:
Remove blockToRST' moving its logic into fixBlocks (Francesco Occhipinti).
Insert comment between lists and quotes (#4248, Francesco Occchipinti).
RST template: remove definition of ‘math’ role as raw. This used to be needed prior to v 0.8 of docutils, but now math support is built-in.
Slides: Use divs to set incremental/non-incremental (#4381, Jesse Rosenthal). The old method (list inside blockquote) still works, but we are encouraging the use of divs with class incremental or nonincremental.
Text.Pandoc.ImageSize:
Make image size detection for PDFs more robust (#4322).
Determine image size for PDFs (#4322).
EMF Image size support (#4375, Andrew Pritchard).
Text.Pandoc.Extensions:
Add Ext_styles (Jesse Rosenthal, API change). This will be used in the docx reader (defaulting to off) to read pargraph and character styles not understood by pandoc (as divs and spans, respectively).
Made Ext_raw_html default for commonmark format.
Text.Pandoc.Parsing:
Export manyUntil (Alexander Krotov, API change).
Export improved sepBy1 (Alexander Krotov).
Export list marker parsers: upperRoman, lowerRoman, decimal, lowerAlpha, upperAlpha (Alexander Krotov, API change).
Tests/Lua: fix tests on windows (Albert Krewinkel).
Lua: register script name in global variable (#4393). The name of the Lua script which is executed is made available in the global Lua variable PANDOC_SCRIPT_FILE, both for Lua filters and custom writers.
Tests: Abstract powerpoint tests out to OOXML tests (Jesse Rosenthal). There is very little pptx-specific in these tests, so we abstract out the basic testing function so it can be used for docx as well. This should allow us to catch some errors in the docx writer that slipped by the roundtrip testing.
Lua filters: store constructors in registry (Albert Krewinkel). Lua functions used to construct AST element values are stored in the Lua registry for quicker access. Getting a value from the registry is much faster than getting a global value (partly to idiosyncrasies of hslua); this change results in a considerable performance boost.
Documentation:
doc/org.md Add draft of Org-mode documentation (Albert Krewinkel).
doc/lua-filters.md: document global vars set for filters (Albert Krewinkel).
INSTALL.md: mention Stack version. (#4343, Adam Brandizzi).
MANUAL: add documentation on custom styles (Jesse Rosenthal).
MANUAL.txt: Document incremental and nonincremental divs (Jesse Rosenthal). Blockquoted lists are still described, but fenced divs are presented in preference.
MANUAL.txt: document header and footer variables (newmana).
MANUAL.txt: self-contained implies standalone (#4304, Daniel Lublin).
CONTRIBUTING.md: label was renamed. (#4310, Alexander Brandizzi).
Require tagsoup 0.14.3 (#4282), fixing HTML tokenization bug.
Use latest texmath.
Use latest pandoc-citeproc.
Allow exceptions 0.9.
Require aeson-pretty 0.8.5 (#4394).
Bump blaze-markup, blaze-html lower bounds to 0.8, 0.9 (#4334).
Update tagsoup to 0.14.6 (Alexander Krotov, #4282).
Removed ghc-prof-options. As of cabal 1.24, sensible defaults are used.
Update default.nix to current nixpkgs-unstable for hslua-0.9.5 (#4348, jarlg).

New in Pandoc 2.1.1 (Jan 19, 2018)

Markdown reader:
Don’t coalesce adjacent raw LaTeX blocks if they are separated by a blank line. See lierdakil/pandoc-crossref#160.
Improved inlinesInBalancedBrackets (#4272, jgm/pandoc-citeproc#315). The change both improves performance and fixes a regression whereby normal citations inside inline notes and figure captions were not parsed correctly.
RST reader:
Better handling for headers with an anchor (#4240). Instead of creating a Div containing the header, we put the id directly on the header. This way header promotion will work properly.
Add aligned environment when needed in math (#4254). rst2latex.py uses an align* environment for math in .. math:: blocks, so this math may contain line breaks. If it does, we put the math in an aligned environment to simulate rst2latex.py’s behavior.
HTML reader:
Fix col width parsing for percentages < 10% (#4262, n3fariox).
LaTeX reader:
Advance source position at end of stream.
Pass through macro defs in rawLaTeXBlock even if the latex_macros extension is set (#4246). This reverts to earlier behavior and is probably safer on the whole, since some macros only modify things in included packages, which pandoc’s macro expansion can’t modify.
Fixed pos calculation in tokenizing escaped space.
Allow macro definitions inside macros (#4253). Previously we went into an infinite loop with:
newcommand{noop}[1]{#1}
noop{newcommand{foo}[1]{#1}}
foo{hi}
Fix inconsistent column widths (#4238). This fixes a bug whereby column widths for the body were different from widths for the header in some tables.
Docx reader (Jesse Rosenthal):
Parse hyperlinks in instrText tags (#3389, #4266). This was a form of hyperlink found in older versions of word. The changes introduced for this, though, create a framework for parsing further fields in MS Word (see the spec, ECMA-376-1:2016, §17.16.5, for more on these fields). We introduce a new module, Text.Pandoc.Readers.Docx.Fields which contains a simple parsec parser. At the moment, only simple hyperlink fields are accepted, but that can be extended in the future.
Muse reader (Alexander Krotov):
Parse ~~ as non-breaking space in Text::Amuse mode.
Refactor list parsing.
Powerpoint writer (Jesse Rosenthal):
Change reference to notesSlide to endNotesSlide.
Move image sizing into picProps.
Improve table placement.
Make our own _rels/.rels file.
Import reference-doc images properly.
Move Presentation.hs out of PandocMonad.
Refactor into separate modules. T.P.W.Powerpoint.Presentation defines the Presentation datatype and goes Pandoc->Presentation; T.P.W.Pandoc.Output goes Presentation->Archive. Text.Pandoc.Writers.Powerpoint a thin wrapper around the two modules.
Avoid overlapping blocks in column output.
Position images correctly in two-column layout.
Make content shape retrieval environment-aware.
Improve image handling. We now determine image and caption placement by getting the dimensions of the content box in a given layout. This allows for images to be correctly sized and positioned in a different template. Note that images without captions and headers are no longer full-screened. We can’t do this dependably in different layouts, because we don’t know where the header is (it could be to the side of the content, for example).
Read presentation size from reference file. Our presentation size is now dependent on the reference/template file we use.
Handle (sub)headers above slidelevel correctly. Above the slidelevel, subheaders will be printed in bold and given a bit of extra space before them. Note that at the moment, no distinction is made between levels of headers above the slide header, though that can be changed.
Check for required files. Since we now import from reference/dist file by glob, we need to make sure that we’re getting the files we need to make a non-corrupt Powerpoint. This performs that check.
Improve templating using --reference-doc. Templating should work much more reliably now.
Include Notes slide in TOC.
Set notes slide header to slide-level.
Add table of contents. This is triggered by the --toc flag. Note that in a long slide deck this risks overrunning the text box. The user can address this by setting --toc-depth=1.
Set notes slide number correctly.
Clean up adding metadata slide. We want to count the slide numbers correctly if it’s in there.
Add anchor links. For anchor-type links ([foo](#bar)) we produce an anchor link. In powerpoint these are links to slides, so we keep track of a map relating anchors to the slides they occur on.
Make the slide number available to the blocks. For anchors, block-processing functions need to know what slide number they’re in. We make the envCurSlideId available to blocks.
Move curSlideId to environment.
Allow setting toc-title in metadata.
Link notes to endnotes slide.
Markdown writer:
Fix cell width calculation (#4265). Previously we could get ever-lengthening cell widths when a table was run repeatedly through pandoc -f markdown -t markdown.
LaTeX writer:
Escape & in lstinline (Robert Schütz).
ConTeXt writer:
Use xtables instead of Tables (#4223, Henri Menke). Default to xtables for context output. Natural Tables are used if the new ntb extension is set.
HTML writer:
Fixed footnote backlinks with --id-prefix (#4235).
Text.Pandoc.Extensions: Added Ext_ntb constructor (API change, Henri Menke).
Text.Pandoc.ImageSize: add derived Eq instance to Dimension (Jesse Rosenthal, API change).
Lua filters (Albert Krewinkel):
Make PANDOC_READER_OPTIONS available. The options which were used to read the document are made available to Lua filters via the PANDOC_READER_OPTIONS global.
Add lua module pandoc.utils.run_json_filter, which runs a JSON filter on a Pandoc document.
Refactor filter-handling code into Text.Pandoc.Filter.JSON, Text.Pandoc.Filter.Lua, and Text.Pandoc.Filter.Path.
Improve error messages. Provide more context about the task which caused an error.
data/pandoc.lua (Albert Krewinkel):
Accept singleton inline as a list. Every constructor which accepts a list of inlines now also accepts a single inline element for convenience.
Accept single block as singleton list. Every constructor which accepts a list of blocks now also accepts a single block element for convenience. Furthermore, strings are accepted as shorthand for {pandoc.Str "text"} in constructors.
Add attr, listAttributes accessors. Elements with attributes got an additional attr accessor. Attributes were accessible only via the identifier, classes, and attributes, which was in conflict with the documentation, which indirectly states that such elements have the an attr property.
Drop _VERSION. Having a _VERSION became superfluous, as this module is closely tied to the pandoc version, which is available via PANDOC_VERSION.
Fix access to Attr components. Accessing an Attr value (e.g., Attr().classes) was broken; the more common case of accessing it via an Inline or Block element was unaffected by this.
Move metaValueToInlines to from Docx writer to Text.Pandoc.Writers.Shared, so it can be used by other writers (Jesse Rosenthal).
MANUAL.txt:
Clarify otherlangs in LaTeX (#4072).
Clarify latex_macros extension.
Recommend use of raw_attribute extension in header includes (#4253).
Allow latest QuickCheck, tasty, criterion.
Remove custom prelude and ghc 7.8 support.
Reduce compiler noise (exact paths for compiled modules).

New in Pandoc 2.1 (Jan 8, 2018)

Allow filters and lua filters to be interspersed (#4196). Previously we ran all lua filters before JSON filters. Now we run filters in the order they are presented on the command line, whether lua or JSON. There are two incompatible API changes: The type of applyFilters has changed, and applyLuaFilters has been removed. Filter is also now exported.
Use latest skylighting and omit the missingIncludes check, fixing a major performance regression in earlier releases of the 2.x series (#4226). Behavior change: If you use a custom syntax definition that refers to a syntax you haven’t loaded, pandoc will now complain when it is highlighting the text, rather than doing a check at the start. This change dramatically speeds up invocations of pandoc on short inputs.
Text.Pandoc.Class: make FileTree opaque (don’t export FileTree constructor). This forces users to interact with it using insertInFileTree and getFileInfo, which normalize file names.
Markdown reader:
Rewrite inlinesInBalancedBrackets. The rewrite is much more direct, avoiding parseFromString. And it performs significantly better; unfortunately, parsing time still increases exponentially (see #1735).
Avoid parsing raw tex unless + letter seen. This seems to help with the performance problem, #4216.
LaTeX reader: Simplified a check for raw tex command.
Muse reader (Alexander Krotov):
Enable round trip test (#4107).
Automatically translate #cover into #cover-image. Amusewiki uses #cover directive to specify cover image.
Docx reader (Jesse Rosenthal):
Allow for insertion/deletion of paragraphs (#3927). If the paragraph has a deleted or inserted paragraph break (depending on the track-changes setting) we hold onto it until the next paragraph. This takes care of accept and reject. For this we introduce a new state which holds the ils from the previous para if necessary. For --track-changes=all, we add an empty span with class paragraph-insertion/paragraph-deletion at the end of the paragraph prior to the break to be inserted or deleted.
Remove unused anchors (#3679). Docx produces a lot of anchors with nothing pointing to them—we now remove these to produce cleaner output. Note that this has to occur at the end of the process because it has to follow link/anchor rewriting.
Read multiple children of w:sdtContents.
Combine adjacent anchors. There isn’t any reason to have numerous anchors in the same place, since we can’t maintain docx’s non-nesting overlapping. So we reduce to a single anchor.
Improved tests.
Muse writer (Alexander Krotov): don’t escape URIs from AST
Docx writer:
Removed redundant subtitle in title (Sebastian Talmon).
firstRow table definition compatibility for Word 2016 (Sebastian Talmon). Word 2016 seems to use a default value of “1” for table headers, if there is no firstRow definition (although a default value of 0 is documented), so all tables get the first Row formatted as header. Setting the parameter to 0 if the table has no header row fixes this for Word 2016
Fix custom styles with spaces in the name (#3290).
Powerpoint writer (Jesse Rosenthal):
Ignore Notes div for parity with other slide outputs.
Set default slidelevel correctly. We had previously defaulted to slideLevel 2. Now we use the correct behavior of defaulting to the highest level header followed by content. We change an expected test result to match this behavior.
Split blocks correctly for linked images.
Combine adjacent runs.
Make inline code inherit code size. Previously (a) the code size wasn’t set when we force size, and (b) the properties was set from the default, instead of inheriting.
Simplify replaceNamedChildren function.
Allow linked images. The following markdown: [![Image Title](image.jpg)](http://www.example.com) will now produce a linked image in the resulting PowerPoint file.
Fix error with empty table cell. We require an empty <a:p> tag, even if the cell contains no paragraphs—otherwise PowerPoint complains of corruption.
Implement two-column slides. This uses the columns/column div format described in the pandoc manual. At the moment, only two columns (half the screen each) are allowed. Custom widths are not supported.
Added more tests.
OpenDocument/ODT writers: improved rendering of formulas (#4170, oltolm).
Lua filters (Albert Krewinkel):
data/pandoc.lua: drop ‘pandoc-api-version’ from Pandoc objects
The current pandoc-types version is made available to Lua programs in the global PANDOC_API_VERSION. It contains the version as a list of numbers.
The pandoc version available as a global PANDOC_VERSION (a list of numbers).
data/pandoc.lua: make Attr an AstElement.
data/pandoc.lua: make all types subtypes of AstElement. Pandoc, Meta, and Citation were just plain functions and did not set a metatable on the returned value, which made it difficult to amend objects of these types with new behavior. They are now subtypes of AstElement, meaning that all their objects can gain new features when a method is added to the behavior object (e.g., pandoc.Pandoc.behavior).
data/pandoc.lua: split type and behavior tables. Clearly distinguish between a type and the behavioral properties of an instance of that type. The behavior of a type (and all its subtypes) can now be amended by adding methods to that types behavior object, without exposing the type objects internals. E.g.:
pandoc.Inline.behavior.frob = function () print'42' end
local str = pandoc.Str'hello'
str.frob() -- outputs '42'
data/pandoc.lua: fix Element inheritance. Extending all elements of a given type (e.g., all inline elements) was difficult, as the table used to lookup unknown methods would be reset every time a new element of that type was created, preventing recursive property lookup. This is was changed in that all methods and attributes of supertypes are now available to their subtypes.
data/pandoc.lua: fix attribute names of Citation (#4222). The fields were named like the Haskell fields, not like the documented, shorter version. The names are changed to match the documentation and Citations are given a shared metatable to enable simple extensibility.
Bump hslua version to 0.9.5. This version fixes a bug that made it difficult to handle failures while getting lists or a Map from Lua. A bug in pandoc, which made it necessary to always pass a tag when using MetaList or MetaBlock, is fixed as a result. Using the pandoc module’s constructor functions for these values is now optional (if still recommended).
Stop exporting pushPandocModule (API change). The introduction of runPandocLua renders direct use of this function obsolete.
Update generation of module docs for lua filters.
Lua.Module.Utils: make stringify work on MetaValues (John MacFarlane). I’m sure this was intended in the first place, but currently only Meta is supported.
Improve benchmarks.
Set the default extensions properly.
Improve benchmark argument parsing. You can now say make bench BENCHARGS="markdown latex reader" and both the markdown and latex readers will be benchmarked.
MANUAL.txt simplify and add more structure (Mauro Bieg).
Generate README.md from template and MANUAL.txt. make README.md will generate the README.md aftr changes to MANUAL.txt have been made.

New in Pandoc 2.0.6 (Dec 29, 2017)

Added jats as an input format:
Add Text.Pandoc.Readers.JATS, exporting readJATS (API change) (Hamish Mackenzie).
Improved citation handling in JATS reader. JATS citations are now converted to pandoc citations, and JATS ref-lists are converted into a references field in metadata, suitable for use with pandoc-citeproc. Thus a JATS article with embedded bibliographic information can be processed with pandoc and pandoc-citeproc to produce a formatted bibliography.
Allow --list-extensions to take an optional FORMAT argument. This lists the extensions set by default for the selected FORMAT. The extensions are now alphabetized, and the + or - indicating the default setting comes before, rather than after, the extension.
Markdown reader:
Preserve original whitespace between blocks.
Recognize placeformula as context.
Be pickier about table captions. A caption starts with a : which can’t be followed by punctuation. Otherwise we can falsely interpret the start of a fenced div, or even a table header line like :--:|:--:, as a caption.
Always use four space rule for example lists. It would be awkward to indent example list contents to the first non-space character after the label, since example list labels are often long. Thanks to Bernhard Fisseni for the suggestion.
Improve raw tex parsing. Note that the Markdown reader is also affected by the latex_macros extension changes described below under the LaTeX reader.
LaTeX reader:
latex_macros extension changes (#4179). Don’t pass through macro definitions themselves when latex_macros is set. The macros have already been applied. If latex_macros is enabled, then rawLaTeXBlock in Text.Pandoc.Readers.LaTeX will succeed in parsing a macro definition, and will update pandoc’s internal macro map accordingly, but the empty string will be returned.
Export tokenize, untokenize (API change).
Use applyMacros in rawLaTeXBlock, rawLaTeXInline.
Refactored inlineCommand.
Fix bug in tokenizer. Material following ^^ was dropped if it wasn’t a character escape. This only affected invalid LaTeX, so we didn’t see it in the wild, but it appeared in a QuickCheck test failure.
Fix regression in LateX tokenization (#4159). This mainly affects the Markdown reader when parsing raw LaTeX with escaped spaces.
Add tests of LaTeX tokenizer.
Support foreignlanguage from babel.
Be more tolerant of & character (#4208). This allows us to parse unknown tabular environments as raw LaTeX.
Muse reader (Alexander Krotov):
Parse anchors immediately after headings as IDs.
Require that note references does not start with 0.
Parse empty comments correctly.
Org reader (Albert Krewinkel):
Fix asterisks-related parsing error (#4180).
Support minlevel option for includes (#4154). The level of headers in included files can be shifted to a higher level by specifying a minimum header level via the :minlevel parameter. E.g. #+include: "tour.org" :minlevel 1 will shift the headers in tour.org such that the topmost headers become level 1 headers.
Break-up org reader test file into multiple modules.
OPML reader:
Enable raw HTML and other extensions by default for notes (#4164). This fixes a regression in 2.0. Note that extensions can now be individually disabled, e.g. -f opml-smart-raw_html.
RST reader:
Allow empty list items (#4193).
More accurate parsing of references (#4156). Previously we erroneously included the enclosing backticks in a reference ID (#4156). This change also disables interpretation of syntax inside references, as in docutils. So, there is no emphasis in `my *link*`_.
Docx reader:
Continue lists after interruption (#4025, Jesse Rosenthal). Docx expects that lists will continue where they left off after an interruption and introduces a new id if a list is starting again. So we keep track of the state of lists and use them to define a “start” attribute, if necessary.
Add tests for structured document tags unwrapping (Jesse Rosenthal).
Preprocess Document body to unwrap w:sdt elements (Jesse Rosenthal, #4190).
Plain writer:
Don’t linkify table of contents.
RST writer:
Fix anchors for headers (#4188). We were missing an _.
PowerPoint writer (Jesse Rosenthal):
Treat lists inside BlockQuotes as lists. We don’t yet produce incremental lists in PowerPoint, but we should at least treat lists inside BlockQuotes as lists, for compatibility with other slide formats.
Add ability to force size. This replaces the more specific blockQuote runProp, which only affected the size of blockquotes. We can use this for notes, etc.
Implement notes. This currently prints all notes on a final slide. Note that at the moment, there is a danger of text overflowing the note slide, since there is no logic for adding further slides.
Implement basic definition list functionality to PowerPoint writer.
Don’t look for default template file for Powerpoint (#4181).
Add pptx to isTextFormat list. This is used to check standalone and not writing to the terminal.
Obey slide level option (Jesse Rosenthal).
Introduce tests.
Docx writer:
Ensure that distArchive is the one that comes with pandoc (#4182). Previously a reference.docx in ~/.pandoc (or the user data dir) would be used instead, and this could cause problems because a user-modified docx sometimes lacks vital sections that we count on the distArchive to supply.
Org writer:
Do not wrap “-” to avoid accidental bullet lists (Alexander Krotov).
Don’t allow fn refs to wrap to beginning of line (#4171, with help from Alexander Krotov). Otherwise they can be interpreted as footnote definitions.
Muse writer (Alexander Krotov):
Don’t wrap note references to the next line (#4172).
HTML writer:
Use br elements in line blocks instead of relying on CSS (#4162). HTML-based templates have had the custom CSS for div.line-block removed. Those maintaining custom templates will want to remove this too. We still enclose line blocks in a div with class line-block.
LaTeX writer:
Use renewcommand for textlatin with babel (#4161). This avoids a clash with a deprecated textlatin command defined in Babel.
Allow fragile=singleslide attribute in beamer slides (#4169).
Use endhead after toprule in headerless tables (#4207).
FB2 writer:
Add cover image specified by cover-image meta (Alexander Krotov, #4195).
JATS writer (Hamish Mackenzie):
Support writing <fig> and <table-wrap> elements with <title> and <caption> inside them by using Divs with class set to one of fig, table-wrap or caption (Hamish Mackenzie). The title is included as a Heading so the constraint on where Heading can occur is also relaxed.
Leave out empty alt attributes on links.
Deduplicate image mime type code.
Make <p> optional in <td> and <th> (#4178).
Self closing tags for empty xref (#4187).
Improve support for code language.
Custom writer:
Use init file to setup Lua interpreter (Albert Krewinkel). The same init file (data/init) that is used to setup the Lua interpreter for Lua filters is also used to setup the interpreter of custom writers.lua.
Define instances for newtype wrapper (Albert Krewinkel). The custom writer used its own ToLuaStack instance definitions, which made it difficult to share code with Lua filters, as this could result in conflicting instances. A Stringify wrapper is introduced to avoid this problem.
Added tests for custom writer.
Fixed definition lists and tables in data/sample.lua.
Fixed regression: when target is PDF, writer extensions were being ignored. So, for example, pandoc -t latex-smart -o file.pdf did not work properly.
Lua modules (Albert Krewinkel):
Add pandoc.utils module, to hold utility functions.
Create a Haskell module Text.Pandoc.Lua.Module.Pandoc to define the pandoc lua module.
Make a Haskell module for each Lua module. Move definitions for the pandoc.mediabag modules to a separate Haskell module.
Move sha1 from the main pandoc module to pandoc.utils.
Add function pandoc.utils.hierarchicalize (convert list of Pandoc blocks into (hierarchical) list of Elements).
Add function pandoc.utils.normalize_date (parses a date and converts it (if possible) to “YYYY-MM-DD” format).
Add function pandoc.utils.to_roman_numeral (allows conversion of numbers below 4000 into roman numerals).
Add function pandoc.utils.stringify (converts any AST element to a string with formatting removed).
data/init.lua: load pandoc.utils by default
Turn pipe, read into full Haskell functions. The pipe and read utility functions are converted from hybrid lua/haskell functions into full Haskell functions. This avoids the need for intermediate _pipe/_read helper functions, which have dropped.
pandoc.lua: re-add missing MetaMap function. This was a bug introduced in version 2.0.4.
Text.Pandoc.Class: Add insertInFileTree [API change]. This gives a pure way to insert an ersatz file into a FileTree. In addition, we normalize paths both on insertion and on lookup.
Text.Pandoc.Shared: export blocksToInlines' (API change, Maura Bieg).
Text.Pandoc.MIME: Add opus to MIME type table as audio/ogg (#4198).
Text.Pandoc.Extensions: Alphabetical order constructors for Extension. This makes them appear in order in --list-extensions.
Allow lenient decoding of latex error logs, which are not always properly UTF8-encoded (#4200).
Update latex template to work with recent versions of beamer. The old template produced numbered sections with some recent versions of beamer. Thanks to Thomas Hodgson.
Updated reference.docx (#4175). Instead of just “Hello, world”, the document now contains exemplars of most of the styles that have an effect on pandoc documents. This makes it easier to see the effect of style changes.
Removed default.theme data file (#4096). It is no longer needed now that we have --print-highlight-style.
Added stack.lts9.yaml for building with lts 9 and ghc 8.0.2. We still need this for the alpine static linux build, since we don’t have ghc 8.2.2 for that yet.
Removed stack.pkg.yaml. We only really need stack.yaml; we can put flag settings for pandoc-citeproc there.
Makefile: Add ‘trypandoc’ and ‘pandoc-templates’ targets to make releases easier.
MANUAL.txt:
Add note on what formats have +smart by default.
Use native syntax for custom-style (#4174, Mauro Bieg).
Introduce dedicated Extensions section, since some extensions affect formats other than markdown (Mauro Bieg, #4204).
Clarify default html output for --section-divs (Richard Edwards).
filters.md: say that Text.Pandoc.JSON comes form pandoc-types. Closes jgm/pandoc-website#16.
epub.md: Delete removed -S option from command (#4151, Georger Araújo).

New in Pandoc 2.0.5 (Dec 13, 2017)

ix a bug in 2.0.4, whereby pandoc could not read the theme files
generated with --print-highlight-style (#4133). Improve JSON
serialization of styles.
Fix CSS issues involving line numbers (#4128).
Highlighted code blocks are now enclosed in a div with class sourceCode.
Highlighting CSS no longer sets a generic color for pre and code; we only
set these for class sourceCode.
--pdf-engine-opt: fix bug where option order was reversed (#4137).
Add PowerPoint (pptx) writer (Jesse Rosenthal).
It works following the standard Pandoc conventions for making other
sorts of slides.
Caveats:
yntax highlighting is not yet implemented. (This is difficult
because there are no character classes in Powerpoint.)
Footnotes and Definition lists are not yet implemented. (Notes will
usually take the form of a final slide.
Image placement and auto-resizing has a few glitches.
Reference powerpoint files don’t work dependably from the command
line. This will be implemented, but at the moment users are advised
to change themes from within Powerpoint.
Create shared Text.Pandoc.Writers.OOXML module (Jesse Rosenthal).
This is for functions used by both Powerpoint and Docx writers.
Add default pptx data for Powerpoint writer (Jesse Rosenthal).
Add empty_paragraphs extension:
Deprecate --strip-empty-paragraphs option. Instead we now
use an empty_paragraphs extension that can be enabled on
the reader or writer. By default, disabled.
Add Ext_empty_paragraphs constructor to Extension.
Revert “Docx reader: don’t strip out empty paragraphs.”
This reverts commit d6c58eb.
Implement empty_paragraphs extension in docx reader and writer,
opendocument writer, html reader and writer.
Add tests for empty_paragraphs extension.
Markdown reader:
Don’t parse native div as table caption (#4119).
Improved computation of column widths in pipe tables.
Pipe tables with lines longer than the text width (as set
by --columns) are now scaled to text width, with the relative
widths of columns determined by the ratios between the
header lines. Previously we computed column widths using
the ratio of header line lengths to column width, so that
tables with narrow header lines were extremely thin, which
was very rarely the desired result.
LaTeX reader: fix before newline (#4134). This should be a space,
as long as it’s not followed by a blank line. This has been fixed at the
tokenizer level.
Muse reader (Alexander Krotov):
Add test for #disable-tables directive in Emacs mode.
Don’t allow emphasis to be preceded by letter.
Add underline support in Emacs Muse mode..
Support multiline directives in Amusewiki mode
Man writer: omit internal links (#4136). That is, just print the link
text without the URL.
Markdown reader: accept processing instructions as raw HTML (#4125).
Lua filters (Albert Krewinkel):
Use script to initialize the interpreter. The file init.lua is
used to initialize the Lua interpreter which is used in Lua filters.
This gives users the option to require libraries which they want to
use in all of their filters, and to extend default modules.
Fix package loading for Lua 5.1. The list of package searchers is
named package.loaders in Lua 5.1 and LuaJIT, and package.searchers
in Lua 5.2 and later.
Refactor lua module handling. The integration with Lua’s package/module
system is improved: A pandoc-specific package searcher is prepended to
the searchers in package.searchers. The modules pandoc and
pandoc.mediabag can now be loaded via require.
Bump lower bound of hslua. The release hslua 0.9.3 contains a new
function which makes using Haskell functions as package loaders much
easier.
reveal.js template: add title-slide identifier to title slide (#4120).
This allows it to be styled more easily.
LaTeX template: Added support for pagestyle variable (#4135,
Thomas Hodgson)
Add -threaded to ghc-options for executable (#4130, fixes a build
error on linux).

New in Pandoc 2.0.4 (Dec 4, 2017)

Add --print-highlight-style option. This generates a JSON version
of a highlighting style, which can be saved as a .theme file, modified,
and used with --highlight-style (#4106, #4096).
Add --strip-empty-paragraphs option. This works for any input format.
It is primarily intended for use with docx and odt documents where
empty paragraphs have been used for inter-paragraph spaces.
Support --webtex for gfm output.
Recognize .muse file extension.
Support beamer alert in LaTeX reader. Closes #4091.
Docx reader: don’t strip out empty paragraphs (#2252).
Users who have a conversion pipeline from docx may want to consider adding
--strip-empty-paragraphs to the command line.
Org reader (Albert Krewinkel): Allow empty list items (#4090).
Muse reader (Alexander Krotov):
Parse markup in definition list terms.
Allow definition to end with EOF.
Make code blocks round trip.
Drop common space prefix from list items.
Add partial round trip test.
Don’t interpret XML entities.
Remove nested.
Parse ~~ as non-breaking space in Emacs mode.
Correctly remove indentation from notes. Exactly one space is
required and considered to be part of the marker.
Allow list items to be empty.
Add ordered list test.
Add more multiline definition tests.
Don’t allow blockquotes within lists.
Fix reading of multiline definitions.
Add inline <literal> support.
Concatenate inlines of the same type
Docx writer: allow empty paragraphs (#2252).
CommonMark/gfm writer:
Use raw html for native divs/spans (#4113). This allows a pandoc
markdown native div or span to be rendered in gfm using raw html tags.
Implement raw_html and raw_tex extensions. Note that raw_html
is enabled by default for gfm, while raw_tex is disabled by default.
Muse writer (Alexander Krotov):
Test that inline math conversion result is normalized.
Without normalization this test produced
<em>a</em><em>b</em><em>c</em>.
Improve inline list normalization and move to writer.
Escape hash symbol.
Escape ---- to avoid accidental horizontal rules.
Escape only </code> inside code tag.
Additional <verbatim> is not needed as <code> is verbatim already.
LaTeX writer:
Allow specifying just width or height for image size.
Previously both needed to be specified (unless the image was
being resized to be smaller than its original size).
If height but not width is specified, we now set width to
textwidth. If width but not height is specified, we now set
height to textheight. Since we have keepaspectratio, this
yields the desired result.
Escape ~ and _ in code with --listings (#4111).
HTML writer: export tagWithAttributes. This is a helper allowing
other writers to create single HTML tags.
Let papersizes a0, a1, a2, … be case-insensitive by
converting the case as needed in LaTeX and ConTeXt writers.
Change fixDisplayMath from Text.Pandoc.Writers.Shared
so that it no longer produces empty Para’s as an artifact.
Text.Pandoc.Shared.blocksToInlines: rewrote using builder.
This gives us automatic normalization, so we don’t get
for example two consecutive Spaces.
Include default CSS for ‘underline’ class in HTML-based templates.
revealjs template: add tex2jax configuration for the
math plugin. With the next release of reveal.js, this will
fix the problem of $s outside of math contexts being
interpreted as math delimiters (#4027).
pandoc.lua module for use in lua filters (Albert Krewinkel):
Add basic lua List module (#4099, #4081). The List module is
automatically loaded, but not assigned to a global variable. It can be
included in filters by calling List = require 'List'. Lists of blocks,
lists of inlines, and lists of classes are now given List as a metatable,
making working with them more convenient. E.g., it is now possible to
concatenate lists of inlines using Lua’s concatenation operator ..
(requires at least one of the operants to have List as a metatable),
As follows:
function Emph (emph)
local s = {pandoc.Space(), pandoc.Str 'emphasized'}
return pandoc.Span(emph.content .. s)
end
The List metatable is assigned to the tables which get passed to
the constructors MetaBlocks, MetaInline, and MetaList. This
enables the use of the resulting objects as lists.
Lua/StackInstances: push Pandoc and Meta via constructor.
Pandoc and Meta elements are now pushed by calling the respective
constructor functions of the pandoc Lua module. This makes serialization
consistent with the way blocks and inlines are pushed to lua and allows
to use List methods with the blocks value.
Add documentation for pandoc.List in lua-filters.md.
Use latest tagsoup. This fixes a bug in parsing HTML tags with
& (but not a valid entity) following them (#4094, #4088).
Use skylighting 0.4.4.1, fixing the color of unmarked code text
when numberLines is used (#4103).
Make normalizeDate more forgiving (Mauro Bieg, #4101), not
requiring a leading 0 on single-digit days.
Fix --help output for --highlight-style to include FILE (Mauro
Bieg, #4095).
Clearer deprecation warning for --latexmathml, --asciimathml, -m.
Previously we only mentioned --latexmathml, even if -m was
used.
Changelog: fix description of lua filters in 2.0 release
(Albert Krewinkel). Lua filters were initially run after conventional
(JSON) filters. However, this was changed later to make it easier to deal
with files in the mediabag. The changelog is updated to describe that
feature of the 2.0 release correctly.
Change Generic JSON instances to TemplateHaskell (Jasper Van der Jeugt,
#4085). This reduces compile time and memory usage significantly.
lua-filters.md: Added tikz filter example.
Create alternative zip file for macOS binaries.
Create alternative zip file for Windows binaries.
Update INSTALL.md since we now provide zips for binaries.
Relax http-types dependency (Justus Sagemüller, #4084).
Add epub.md, getting-started.md to docs. These used to live in
the website repo.
Add packages target to Makefile.
Bump bounds for binary, http-types, tasty-hunit

New in Pandoc 2.0.3 (Nov 21, 2017)

Lua filters: preload text module (Albert Krewinkel, #4077).
The text module is preloaded in lua. The module contains some UTF-8 aware string functions, implemented in Haskell. The module is loaded on request only,
e.g.:
text = require 'text'
function Str (s)
s.text = text.upper(s.text)
return s
end
Allow table-like access to attributes in lua filters (Albert Krewinkel, #4071). Attribute lists are represented as associative lists in Lua. Pure associative lists are awkward to work with. A metatable is attached to attribute lists, allowing to access and use the associative list as if the attributes were stored in as normal key-value pair in table.
Note that this changes the way pairs works on attribute lists. Instead of producing integer keys and two-element tables, the resulting iterator function now returns the key and value of those pairs. Use ipairs to get the old behavior. Warning: the new iteration mechanism only works if pandoc has been compiled with Lua 5.2 or later (current default: 5.3).
Text.Pandoc.Parsing.uri: allow & and = as word characters (#4068). This fixes a bug where pandoc would stop parsing a URI with an empty attribute: for example, &a=&b= wolud stop at a. (The uri parser tries to guess which punctuation characters are part of the URI and which might be punctuation after it.)
Introduce HasSyntaxExtensions typeclass (Alexander Krotov, #4074):
Added new HasSyntaxExtensions typeclass for ReaderOptions and WriterOptions.
Reimplemented isEnabled function from Options.hs to accept both ReaderOptions and WriterOptions.
Replaced enabled from CommonMark.hs with new isEnabled.
Add amuse extension (Alexander Krotov) to enable Amuse wiki behavior for muse. New Ext_amuse constructor for Extension. Note: this is switched on by default; for
Emacs behavior, use muse-amuse.
Muse reader (Alexander Krotov):
Count only one space as part of list item marker.
Produce SoftBreaks on newlines. Now wrapping can be preserved with --wrap=preserve.
Add Text::Amuse footnote extensions. Footnote end is indicated by indentation, so footnotes can be placed anywhere in the text, not just at the end of it.
Accept Emacs Muse definition lists when -amuse.
Emacs Muse does not require indentation.
HTML reader:
Ensure we don’t produce level 0 headers (#4076), even for chapter sections in epubs. This causes problems because writers aren’t set up to expect these.
Allow spaces after ( and before ) with tex_math_single_backslash.
Previously ( frac{1}{a} < frac{1}{b} ) was not parsed as math in markdown or html +tex_math_single_backslash.
MANUAL: clarify that math extensions work with HTML.
Clarify that tex_math_dollars and tex_math_single_backslash will work with HTML as well as Markdown.
Creole reader: Fix performance issue for longer lists (Sascha Wilde, #4067).
RST reader: better support for ‘container’ directive (#4066). Create a div, incorporate name attribute and classes.
LaTeX reader:
Support column specs like *{2}{r} (#4056). This is equivalent to rr. We now expand it like a macro. Allow optional args for parbox (#4056).
Allow optional arguments on footnote (#4062).
EPUB writer: Fixed path for cover image (#4069). It was previously
media/media/imagename, and should have been media/imagename.
Markdown writer: fix bug with doubled footnotes in grid tables
(#4061).
LaTeX template: include natbib/biblatex after polyglossia (#4073).
Otherwise we seem to get an error; biblatex wants polyglossia
language to be defined.
Added examples to lua filters documentation.

New in Pandoc 2.0.2 (Nov 13, 2017)

New in Pandoc 2.0.1.1 (Nov 5, 2017)

Improved fix to #3989 (parsing of HTML tags containing
> in an attribute or comment). The previous fix (in 2.0.1) only
worked in certain cases.
FB2 writer (Alexander Krotov):
Add unrecognised genre to <title-info>
(Alexander Krotov). XML schema requires at least one genre.
Remove <annotation> from <body>.
ommonMark writer: fix strikethrough for gfm (#4038).
Use texmath 0.10, which adds support for a wider range of
symbols and fixes default column alignments in MathML
and OMML.
Highlighting fixes, using skylighting 0.4.3.2:
Fix invalid CSS.
Support lineAnchors (or line-anchors) in HTML code blocks.
Ensure that code lines don’t get duplicate identifiers (#4031).
The line identifiers are built using the code block’s identifier
as a prefix. If the code block has null identifier, we use
cb1, cb2, etc.
Added a few abbreviations to data/abbreviations,
and sorted the list (#3984, Wandmalfarbe).
Improved support for columns in HTML writer (#4028):
Remove width attribute from the div.
Remove space between <div class="column"> elements,
since this prevents columns whose widths sum to 100%
(the space takes up space).
Move as much as possible of the CSS to the template.
Ensure that all the HTML-based templates (including epub)
contain the CSS for columns.
Columns default to 50% width unless they are given a width
attribute. So if you want two equal-width columns, you
can use a div with class column and no width attribute.
SelfContained: use base64 for css links with media attribute (#4026).
This fixes --self-contained with S5.
Improve pandoc-template-mode.el (Vaclav Haisman).
Issue INFO, not WARNING, when a .sty file cannot be
read in LaTeX reader. It is normally not an issue requiring
a fix from the user if .sty files are not found.
INSTALL.md: MacOS instructions needed xar -f (adam234).
MANUAL.txt:
Clarify that –setext-headers doesn’t affect gfm output (#4035).
Clarify what is needed to open and close a div in fenced_divs
(#4039, Tristano Ajmone).
Removed reference to default.beamer in docs (#4024).
Also added mention of other templates affecting PDF output
with different settings.

New in Pandoc 2.0.0.1 (Oct 31, 2017)

New in Pandoc 2.0 (Oct 30, 2017)

New in Pandoc 1.19.2.1 (Mar 21, 2017)

New in Pandoc 1.18 (Oct 27, 2016)

Added --list-input-formats, --list-output-formats, --list-extensions, --list-highlight-languages, and --list-highlight-styles (#3173). Removed list of highlighting languages from --version output. Removed list of input and output formats from default --help output.
Added --reference-location=block|section|document option (Jesse Rosenthal). This determines whether Markdown link references and footnotes are placed at the end of the document, the end of the section, or the end of the top-level block.
Added --top-level-division=section|chapter|part (Albert Krewinkel). This determines what a level-1 header corresponds to in LaTeX, ConTeXt, DocBook, and TEI output. The default is section. The --chapters option has been deprecated in favor of --top-level-division=chapter.
Added LineBlock constructor for Block (Albert Krewinkel). This is now used in parsing RST and Markdown line blocks, DocBook linegroup/line combinations, and Org-mode VERSE blocks. Previously Para blocks with hard linebreaks were used. LineBlocks are handled specially in the following ouput formats: AsciiDoc (as [verse] blocks), ConTeXt (startlines/endlines), HTML (div with a style), Markdown (line blocks if line_blocks is enabled), Org-mode (VERSE blocks), RST (line blocks). In other output formats, a paragraph with hard linebreaks is emitted.
Allow binary formats to be written to stdout (but not to tty) (#2677). Only works on posix, since we use the unix library to check whether output is to tty. On Windows, pandoc works as before and always requires an output file parameter for binary formats.
Changed JSON output format (Jesse Rosenthal). Previously we used generically generated JSON, but this was subject to change depending on the version of aeson pandoc was compiled with. To ensure stability, we switched to using manually written ToJSON and FromJSON instances, and encoding the API version. Note: pandoc filter libraries will need to be revised to handle the format change.
Here is a summary of the essential changes:
The toplevel JSON format is now {"pandoc-api-version" : [MAJ, MIN, REV], "meta" : META, "blocks": BLOCKS} instead of [{"unMeta": META}, [BLOCKS]]. Decoding fails if the major and minor version numbers don't match.
Leaf nodes no longer have an empty array for their "c" value. Thus, for example, a Space is encoded as {"t":"Space"} rather than {"t":"Space","c":[]} as before.
Removed tests/Tests/Arbitrary.hs and added a Text.Pandoc.Arbitrary module to pandoc-types (Jesse Rosenthal). This makes it easier to use QuickCheck with pandoc types outside of pandoc itself.
Add bracketed_spans Markdown extension, enabled by default in pandoc markdown. This allows you to create a native span using this syntax: [Here is my span]{#id .class key="val"}.
Added angle_brackets_escapable Markdown extension (#2846). This is needed because github flavored Markdown has a slightly different set of escapable symbols than original Markdown; it includes angle brackets.
Export Text.Pandoc.Error in Text.Pandoc [API change].
Print highlighting-kate version in --version.
Text.Pandoc.Options:
Extension has new constructors Ext_brackted_spans and Ext_angle_brackets_escapable [API change].
Added ReferenceLocation type [API change] (Jesse Rosenthal).
Added writerReferenceLocation field to WriterOptions (Jesse Rosenthal).
--filter: we now check $DATADIR/filters for filters before looking in the path (#3127, Jesse Rosenthal, thanks to Jakob Voß for the idea). Filters placed in this directory need not be executable; if the extension is .hs, .php, .pl, .js, or .rb, pandoc will run the right interpreter.
For --webtex, replace deprecated Google Chart API by CodeCogs as default (Kolen Cheung).
Removed raw_tex extension from markdown_mmd defaults (Kolen Cheung).
Execute .js filters with node (Jakob Voß).
Textile reader:
Support bc.. extended code blocks (#3037). Also, remove trailing newline in code blocks (consistently with Markdown reader).
Improve table parsing. We now handle cell and row attributes, mostly by skipping them. However, alignments are now handled properly. Since in pandoc alignment is per-column, not per-cell, we try to devine column alignments from cell alignments. Table captions are also now parsed, and textile indicators for thead and tfoot no longer cause parse failure. (However, a row designated as tfoot will just be a regular row in pandoc.)
Improve definition list parsing. We now allow multiple terms (which we concatenate with linebreaks). An exponential parsing bug (#3020) is also fixed.
Disallow empty URL in explicit link (#3036).
RST reader:
Use Div instead of BlockQuote for admonitions (#3031). The Div has class admonition and (if relevant) one of the following: attention, caution, danger, error, hint, important, note, tip, warning. Note: This will change the rendering of some RST documents! The word ("Warning", "Attention", etc.) is no longer added; that must be done with CSS or a filter.
A Div is now used for sidebar as well.
Skip whitespace before note (Jesse Rosenthal, #3163). RST requires a space before a footnote marker. We discard those spaces so that footnotes will be adjacent to the text that comes before it. This is in line with what rst2latex does.
Allow empty lines when parsing line blocks (Albert Krewinkel).
Markdown reader:
Allow empty lines when parsing line blocks (Albert Krewinkel).
Allow attributes on autolinks (#3183, Daniele D'Orazio).
LaTeX reader:
More robust parsing of unknown environments (#3026). We no longer fail on things like ^ inside options for tikz.
Be more forgiving of non-standard characters, e.g. ^ outside of math. Some custom environments give these a meaning, so we should try not to fall over when we encounter them.
Drop duplicate * in bibtexKeyChars (Albert Krewinkel)
MediaWiki reader:
Fix for unquoted attribute values in mediawiki tables (#3053). Previously an unquoted attribute value in a table row could cause parsing problems.
Improved treatment of verbatim constructions (#3055). Previously these yielded strings of alternating Code and Space elements; we now incorporate the spaces into the Code. Emphasis etc. is still possible inside these.
Properly interpret XML tags in pre environments (#3042). They are meant to be interpreted as literal text.
EPUB reader: don't add root path to data: URIs (#3150). Thanks to @lep for the bug report and patch.
Org reader (Albert Krewinkel):
Preserve indentation of verse lines (#3064). Leading spaces in verse lines are converted to non-breaking spaces, so indentation is preserved.
Ensure image sources are proper links. Image sources as those in plain images, image links, or figures, must be proper URIs or relative file paths to be recognized as images. This restriction is now enforced for all image sources. This also fixes the reader's usage of uncleaned image sources, leading to file: prefixes not being deleted from figure images. Thanks to @bsag for noticing this bug.
Trim verse lines properly (Albert Krewinkel).
Extract meta parsing code to module. Parsing of meta-data is well separable from other block parsing tasks. Moving into new module to get small files and clearly arranged code.
Read markup only for special meta keys. Most meta-keys should be read as normal string values, only a few are interpreted as marked-up text.
Allow multiple, comma-separated authors. Multiple authors can be specified in the #+AUTHOR meta line if they are given as a comma-separated list.
Give precedence to later meta lines. The last meta-line of any given type is the significant line. Previously the value of the first line was kept, even if more lines of the same type were encounterd.
Read LaTeX_header as header-includes. LaTeX-specific header commands can be defined in #+LaTeX_header lines. They are parsed as format-specific inlines to ensure that they will only show up in LaTeX output.
Set documentclass meta from LaTeX_class.
Set classoption meta from LaTeX_class_options.
Read HTML_head as header-includes. HTML-specific head content can be defined in #+HTML_head lines. They are parsed as format-specific inlines to ensure that they will only show up in HTML output.
Respect author export option. The author option controls whether the author should be included in the final markup. Setting #+OPTIONS: author:nil will drop the author from the final meta-data output.
Respect email export option. The email option controls whether the email meta-field should be included in the final markup. Setting #+OPTIONS: email:nil will drop the email field from the final meta-data output.
Respect creator export option. The creator option controls whether the creator meta-field should be included in the final markup. Setting #+OPTIONS: creator:nil will drop the creator field from the final meta-data output. Org-mode recognizes the special value comment for this field, causing the creator to be included in a comment. This is difficult to translate to Pandoc internals and is hence interpreted the same as other truish values (i.e. the meta field is kept if it's present).
Respect unnumbered header property (#3095). Sections the unnumbered property should, as the name implies, be excluded from the automatic numbering of section provided by some output formats. The Pandoc convention for this is to add an "unnumbered" class to the header. The reader treats properties as key-value pairs per default, so a special case is added to translate the above property to a class instead.
Allow figure with empty caption (Albert Krewinkel, #3161). A #+CAPTION attribute before an image is enough to turn an image into a figure. This wasn't the case because the parseFromString function, which processes the caption value, would fail on empty values. Adding a newline character to the caption value fixes this.
Docx reader:
Use XML convenience functions (Jesse Rosenthal). The functions isElem and elemName (defined in Docx/Util.hs) make the code a lot cleaner than the original XML.Light functions, but they had been used inconsistently. This puts them in wherever applicable.
Handle anchor spans with content in headers. Previously, we would only be able to figure out internal links to a header in a docx if the anchor span was empty. We change that to read the inlines out of the first anchor span in a header.
Let headers use exisiting id. Previously we always generated an id for headers (since they wouldn't bring one from Docx). Now we let it use an existing one if possible. This should allow us to recurs through anchor spans.
Use all anchor spans for header ids. Previously we only used the first anchor span to affect header ids. This allows us to use all the anchor spans in a header, whether they're nested or not (#3088).
Test for nested anchor spans in header. This ensures that anchor spans in header with content (or with other anchor spans inside) will resolve to links to a header id properly.
ODT reader (Hubert Plociniczak)
Include list's starting value. Previously the starting value of the lists' items has been hardcoded to 1. In reality ODT's list style definition can provide a new starting value in one of its attributes.
Infer caption from the text following the image. Frame can contain other frames with the text boxes.
Add fig: to title for Image with a caption (as expected by pandoc's writers).
Basic support for images in ODT documents.
Don't duplicate text for anchors (#3143). When creating an anchor element we were adding its representation as well as the original content, leading to text duplication.
DocBook writer:
Include an anchor element when a div or span has an id (#3102). Note that DocBook does not have a class attribute, but at least this provides an anchor for internal links.
LaTeX writer:
Don't use * for unnumbered paragraph, subparagraph. The starred variants don't exist. This helps with part of #3058...it gets rid of the spurious *s. But we still have numbers on the 4th and 5th level headers.
Properly escape backticks in verbatim (#3121, Jesse Rosenthal). Otherwise they can cause unintended ligatures like ?`.
Handle NARRAOW NO-BREAK SPACE into LaTeX (Vaclav Zeman) as ,.
Don't include [htbp] placement for figures (#3103, Václav Haisman). This allows figure placement defaults to be changed by the user in the template.
TEI writer: remove heuristic to detect book template (Albert Krewinkel). TEI doesn't have elements but only generic division elements. Checking the template for a trailing is nonsensical.
MediaWiki writer: transform filename with underscores in images (#3052). foo bar.jpg becomes foo_bar.jpg. This was already done for internal links, but it also needs to happen for images.
ICML writer: replace partial function (!!) in table handling (#3175, Mauro Bieg).
Man writer: allow section numbers that are not a single digit (#3089).
AsciiDoc writer: avoid unnecessary use of "unconstrained" emphasis (#3068). In AsciiDoc, you must use a special form of emphasis (double __) for intraword emphasis. Pandoc was previously using this more than necessary.
EPUB writer: use stringify instead of plain writer for metadata (#3066). This means that underscores won't be used for emphasis, or CAPS for bold. The metadata fields will just have unadorned text.
Docx Writer:
Implement user-defined styles (Jesse Rosenthal). Divs and Spans with a custom-style key in the attributes will apply the corresponding key to the contained blocks or inlines.
Add ReaderT env to the docx writer (Jesse Rosenthal).
Clean up and streamline RTL behavior (Jesse Rosenthal, #3140). You can set dir: rtl in YAML metadata, or use -M dir=rtl on the command line. For finer-grained control, you can set the dir attribute in Div or Span elements.
Org writer (Albert Krewinkel):
Remove blank line after figure caption. Org-mode only treats an image as a figure if it is directly preceded by a caption.
Ensure blank line after figure. An Org-mode figure should be surrounded by blank lines. The figure would be recognized regardless, but images in the following line would unintentionally be treated as figures as well.
Ensure link targets are paths or URLs. Org-mode treats links as document internal searches unless the link target looks like a URL or file path, either relative or absolute. This change ensures that this is always the case.
Translate language identifiers. Pandoc and Org-mode use different programming language identifiers. An additional translation between those identifiers is added to avoid unexpected behavior. This fixes a problem where language specific source code would sometimes be output as example code.
Drop space before footnote markers (Albert Krewinkel, #3162). The writer no longer adds an extra space before footnote markers.
Markdown writer:
Don't emit HTML for tables unless raw_html extension is set (#3154). Emit [TABLE] if no suitable table formats are enabled and raw HTML is disabled.
Check for the raw_html extension before emiting a raw HTML block.
Abstract out note/ref function (Jesse Rosenthal).
Add ReaderT monad for environment variables (Jesse Rosenthal).
HTML, EPUB, slidy, revealjs templates: Use instead of for subtitle, author, date (#3119). Note that, as a result of this change, authors may need to update CSS.
revealjs template: Added notes-server option (jgm/pandoc-templates#212, Yoan Blanc).
Beamer template:
Restore whitespace between paragraphs. This was a regression in the last release (jgm/pandoc-templates#207).
Added themeoptions variable (Carsten Gips).
Added beamerarticle variable. This causes the beamerarticle package to be loaded in beamer, to produce an article from beamer slides. (Carsten Gips)
Added support for fontfamilies structured variable (Artem Klevtsov).
Added hypersetup options (Jake Zimmerman).
LaTeX template:
Added dummy definition for institute. This isn't a standard command, and we want to avoid a crash when institute is used with the default template.
Define default figure placement (Václav Haisman), since pandoc no longer includes [htbp] for figures. Users with custom templates will want to add this. See #3103.
Use footnote package to fix notes in tables (jgm/pandoc-templates#208, Václav Haisman).
Moved template compiling/rendering code to a separate library. doctemplates. This allows the pandoc templating system to be used independently.
Text.Pandoc.Error: Fix out of index error in handleError (Matthew Pickering). The fix is to not try to show the exact line when it would cause an out-of-bounds error as a result of included files.
Text.Pandoc.Shared: Add linesToBlock function (Albert Krewinkel).
Text.Pandoc.Parsing.emailAddress: tighten up parsing of email addresses. Technically **@user is a valid email address, but if we allow things like this, we get bad results in markdown flavors that autolink raw email addresses (see #2940). So we exclude a few valid email addresses in order to avoid these more common bad cases.
Text.Pandoc.PDF: Don't crash with nonexistent image (#3100). Instead, emit the alt text, emphasized. This accords with what the ODT writer currently does. The user will still get a warning about a nonexistent image.
Fix example in API documentation (#3176, Thomas Weißschuh).
Tell where to get tarball in INSTALL (#3062).
Rename README to MANUAL.txt and add GitHub-friendly README.md (Albert Krewinkel, Kolen Cheung).
Replace COPYING with Markdown version COPYING.md from GNU (Kolen Cheung).
MANUAL.txt:
Put note on structured vars in separate paragraph (#2148, Albert Krewinkel). Make it clearer that structured author variables require a custom template
Note that --katex works best with html5 (#3077).
Fix the LaTeX and EPUB links in manual (Morton Fox).
Document biblio-title variable.
Improve spacing of footnotes in --help output (Waldir Pimenta).
Update KaTeX to v0.6.0 (Kolen Cheung).
Allow latest dependencies.
Use texmath 0.8.6.6 (#3040).
Allow http-client 0.4.30, which is the version in stackage lts. Previously we required 0.5. Remove CPP conditionals for earlier versions.
Remove support for GHC < 7.8 (Jesse Rosenthal).
Remove Compat.Monoid.
Remove an inline monad compatibility macro.
Remove Text.Pandoc.Compat.Except.
Remove directory compat.
Change constraint on mtl.
Remove unnecessary CPP condition in UTF8.
Bump base lower bound to 4.7.
Remove 7.6 build from .travis.yaml.
Bump supported ghc version in CONTRIBUTING.md.
Add note about GHC version support to INSTALL.
Remove GHC 7.6 from list of tested versions (Albert Krewinkel).
Remove TagSoup compat.
Add EOL note to time compat module. Because time 1.4 is a boot library for GHC 7.8, we will support the compatibility module as long as we support 7.8. But we should be clear about when we will no longer need it.
Remove blaze-html CPP conditional.
Remove unnecessary CPP in custom Prelude.

New in Pandoc 1.17.2 (Jul 18, 2016)

New output format: docbook5 (Ivo Clarysse).
Text.Pandoc.Options: Add writerDocBook5 to WriterOptions (API change).
Org writer:
Add :PROPERTIES: drawer support (Albert Krewinkel, #1962). This allows header attributes to be added to org documents in the form of :PROPERTIES: drawers. All available attributes are stored as key/value pairs. This reflects the way the org reader handles :PROPERTIES: blocks.
Add drawer capability (Carlos Sosa). For the implementation of the Drawer element in the Org Writer, we make use of a generic Block container with attributes. The presence of a drawer class defines that the Div constructor is a drawer. The first class defines the drawer name to use. The key-value list in the attributes defines the keys to add inside the Drawer. Lastly, the list of Block elements contains miscellaneous blocks elements to add inside of the Drawer.
Use CUSTOM_ID in properties (Albert Krewinkel). The ID property is reserved for internal use by Org-mode and should not be used. The CUSTOM_ID property is to be used instead, it is converted to the ID property for certain export format.
LaTeX writer:
Ignore --incremental unless output format is beamer (#2843).
Fix polyglossia to babel env mapping (Mauro Bieg, #2728). Allow for optional argument in square brackets.
Recognize la-x-classic as Classical Latin (Andrew Dunning). This allows one to access the hyphenation patterns in CTAN's hyph-utf8.
Add missing languages from hyph-utf8 (Andrew Dunning).
Improve use of strut with minipage inside tables (Jose Luis Duran). This improves spacing in multiline tables.
Use {} around options containing special chars (#2892).
Avoid lazy foldl.
Don't escape underscore in labels (#2921). Previously they were escaped as ux5f.
brazilian -> brazil for polyglossia (#2953).
HTML writer: Ensure mathjax link is added when math appears in footnote (#2881). Previously if a document only had math in a footnote, the MathJax link would not be added.
EPUB writer: set navpage variable on nav page. This allows templates to treat it differently.
DocBook writer:
Use docbook5 if writerDocbook5 is set (Ivo Clarysse).
Properly handle ulink/link (Ivo Clarysse).
EPUB reader:
Unescape URIs in spine (#2924).
EPUB reader: normalise link id (Mauro Bieg).
Docx Reader:
Parse moveTo and moveFrom (Jesse Rosenthal). moveTo and moveFrom are track-changes tags that are used when a block of text is moved in the document. We now recognize these tags and treat them the same as insert and delete, respectively. So, --track-changes=accept will show the moved version, while --track-changes=reject will show the original version.
Tests for track-changes moving (Jesse Rosenthal).
ODT, EPUB, Docx readers: throw PandocError on unzip failure (Jesse Rosenthal) Previously, readDocx, readEPUB, and readOdt would error out if zip-archive failed. We change the archive extraction step from toArchive to toArchiveOrFail, which returns an Either value.
Markdown, HTML readers: be more forgiving about unescaped & in HTML (#2410). We are now more forgiving about parsing invalid HTML with unescaped & as raw HTML. (Previously any unescaped & would cause pandoc not to recognize the string as raw HTML.)
Markdown reader:
Fix pandoc title blocks with lines ending in 2 spaces (#2799).
Added -s to markdown-reader-more test.
HTML reader: fixed bug in pClose. This caused exponential parsing behavior in documnets with unclosed tags in dl, dd, dt.
MediaWiki reader: Allow spaces before ! in MediaWiki table header (roblabla).
RST reader: Support :class: option for code block in RST reader (Sidharth Kapur).
Org reader (all Albert Krewinkel, except where noted otherwise):
Stop padding short table rows. Emacs Org-mode doesn't add any padding to table rows. The first row (header or first body row) is used to determine the column count, no other magic is performed.
Refactor rows-to-table conversion. This refactors the codes conversing a list table lines to an org table ADT. The old code was simplified and is now slightly less ugly.
Fix handling of empty table cells, rows (Albert Krewinkel, #2616). This fixes Org mode parsing of some corner cases regarding empty cells and rows. Empty cells weren't parsed correctly, e.g. ||| should be two empty cells, but would be parsed as a single cell containing a pipe character. Empty rows where parsed as alignment rows and dropped from the output.
Fix spacing after LaTeX-style symbols. The org-reader was droping space after unescaped LaTeX-style symbol commands: ForAll Auml resulted in ∀Ä but should give ∀ Ä instead. This seems to be because the LaTeX-reader treats the command-terminating space as part of the command. Dropping the trailing space from the symbol-command fixes this issue.
Print empty table rows. Empty table rows should not be dropped from the output, so row-height is always set to be at least 1.
Move parser state into separate module. The org reader code has become large and confusing. Extracting smaller parts into submodules should help to clean things up.
Add support for sub/superscript export options. Org-mode allows to specify export settings via #+OPTIONS lines. Disabling simple sub- and superscripts is one of these export options, this options is now supported.
Support special strings export option Parsing of special strings (like ... as ellipsis or -- as en dash) can be toggled using the - option.
Support emphasized text export option. Parsing of emphasized text can be toggled using the * option. This influences parsing of text marked as emphasized, strong, strikeout, and underline. Parsing of inline math, code, and verbatim text is not affected by this option.
Support smart quotes export option. Reading of smart quotes can be toggled using the ' option.
Parse but ignore export options. All known export options are parsed but ignored.
Refactor block attribute handling. A parser state attribute was used to keep track of block attributes defined in meta-lines. Global state is undesirable, so block attributes are no longer saved as part of the parser state. Old functions and the respective part of the parser state are removed.
Use custom anyLine. Additional state changes need to be made after a newline is parsed, otherwise markup may not be recognized correctly. This fixes a bug where markup after certain block-types would not be recognized.
Add support for ATTR_HTML attributes (#1906). Arbitrary key-value pairs can be added to some block types using a #+ATTR_HTML line before the block. Emacs Org-mode only includes these when exporting to HTML, but since we cannot make this distinction here, the attributes are always added. The functionality is now supported for figures.
Add :PROPERTIES: drawer support (#1877). Headers can have optional :PROPERTIES: drawers associated with them. These drawers contain key/value pairs like the header's id. The reader adds all listed pairs to the header's attributes; id and class attributes are handled specially to match the way Attr are defined. This also changes behavior of how drawers of unknown type are handled. Instead of including all unknown drawers, those are not read/exported, thereby matching current Emacs behavior.
Use CUSTOM_ID in properties. See above on Org writer changes.
Respect drawer export setting. The d export option can be used to control which drawers are exported and which are discarded. Basic support for this option is added here.
Ignore leading space in org code blocks (Emanuel Evans, #2862). Also fix up tab handling for leading whitespace in code blocks.
Support new syntax for export blocks. Org-mode version 9 uses a new syntax for export blocks. Instead of #+BEGIN_, where is the format of the block's content, the new format uses #+BEGIN_export instead. Both types are supported.
Refactor BEGIN...END block parsing.
Fix handling of whitespace in blocks, allowing content to be indented less then the block header.
Support org-ref style citations. The org-ref package is an org-mode extension commonly used to manage citations in org documents. Basic support for the cite:citeKey and [[cite:citeKey][prefix text::suffix text]] syntax is added.
Split code into separate modules, making for cleaner code and better decoupling.
Added docbook5 template.
--mathjax improvements:
Use new CommonHTML output for MathJax (updated default MathJax URL, #2858).
Change default mathjax setup to use TeX-AMS_CHTML configuration. This is designed for cases where the input is always TeX and maximal conformity with TeX is desired. It seems to be smaller and load faster than what we used before. See #2858.
Load the full MathJax config to maximize loading speed (KolenCheung).
Bumped upper version bounds to allow use of latest packages and compilation with ghc 8.
Require texmath 0.8.6.2. Closes several texmath-related bugs (#2775, #2310, #2310, #2824). This fixes behavior of roots, e.g. sqrt[3]{x}, and issues with sub/superscript positioning and matrix column alignment in docx.
README:
Clarified documentation of implicit_header_references (#2904).
Improved documentation of --columns option.
Added appveyor setup, with artefacts (Jan Schulz).
stack.yaml versions: Use proper flags used for texmath, pandoc-citeproc.
LaTeX template: support for custom font families (vladipus). Needed for correct polyglossia operation with Cyrillic fonts and perhaps can find some other usages.
Create unsigned msi as build artifact in appveyor build.
On travis, test with ghc 8.0.1; drop testing for ghc 7.4.1.

New in Pandoc 1.17.1 (Jun 8, 2016)

New output format: docbook5 (Ivo Clarysse).
Text.Pandoc.Options: Add writerDocBook5 to WriterOptions (API change).
Org writer:
Add :PROPERTIES: drawer support (Albert Krewinkel, #1962). This allows header attributes to be added to org documents in the form of :PROPERTIES: drawers. All available attributes are stored as key/value pairs. This reflects the way the org reader handles :PROPERTIES: blocks.
Add drawer capability (Carlos Sosa). For the implementation of the Drawer element in the Org Writer, we make use of a generic Block container with attributes. The presence of a drawer class defines that the Div constructor is a drawer. The first class defines the drawer name to use. The key-value list in the attributes defines the keys to add inside the Drawer. Lastly, the list of Block elements contains miscellaneous blocks elements to add inside of the Drawer.
Use CUSTOM_ID in properties (Albert Krewinkel). The ID property is reserved for internal use by Org-mode and should not be used. The CUSTOM_ID property is to be used instead, it is converted to the ID property for certain export format.
LaTeX writer:
Ignore --incremental unless output format is beamer (#2843).
Fix polyglossia to babel env mapping (Mauro Bieg, #2728). Allow for optional argument in square brackets.
Recognize la-x-classic as Classical Latin (Andrew Dunning). This allows one to access the hyphenation patterns in CTAN's hyph-utf8.
Add missing languages from hyph-utf8 (Andrew Dunning).
Improve use of \strut with \minipage inside tables (Jose Luis Duran). This improves spacing in multiline tables.
Use {} around options containing special chars (#2892).
Avoid lazy foldl.
Don't escape underscore in labels (#2921). Previously they were escaped as ux5f.
brazilian -> brazil for polyglossia (#2953).
HTML writer: Ensure mathjax link is added when math appears in footnote (#2881). Previously if a document only had math in a footnote, the MathJax link would not be added.
EPUB writer: set navpage variable on nav page. This allows templates to treat it differently.
DocBook writer:
Use docbook5 if writerDocbook5 is set (Ivo Clarysse).
Properly handle ulink/link (Ivo Clarysse).
EPUB reader:
Unescape URIs in spine (#2924).
EPUB reader: normalise link id (Mauro Bieg).
Docx Reader:
Parse moveTo and moveFrom (Jesse Rosenthal). moveTo and moveFrom are track-changes tags that are used when a block of text is moved in the document. We now recognize these tags and treat them the same as insert and delete, respectively. So, --track-changes=accept will show the moved version, while --track-changes=reject will show the original version.
Tests for track-changes moving (Jesse Rosenthal).
ODT, EPUB, Docx readers: throw PandocError on unzip failure (Jesse Rosenthal) Previously, readDocx, readEPUB, and readOdt would error out if zip-archive failed. We change the archive extraction step from toArchive to toArchiveOrFail, which returns an Either value.
Markdown, HTML readers: be more forgiving about unescaped & in HTML (#2410). We are now more forgiving about parsing invalid HTML with unescaped & as raw HTML. (Previously any unescaped & would cause pandoc not to recognize the string as raw HTML.)
Markdown reader:
Fix pandoc title blocks with lines ending in 2 spaces (#2799).
Added -s to markdown-reader-more test.
HTML reader: fixed bug in pClose. This caused exponential parsing behavior in documnets with unclosed tags in dl, dd, dt.
MediaWiki reader: Allow spaces before ! in MediaWiki table header (roblabla).
RST reader: Support :class: option for code block in RST reader (Sidharth Kapur).
Org reader (all Albert Krewinkel, except where noted otherwise):
Stop padding short table rows. Emacs Org-mode doesn't add any padding to table rows. The first row (header or first body row) is used to determine the column count, no other magic is performed.
Refactor rows-to-table conversion. This refactors the codes conversing a list table lines to an org table ADT. The old code was simplified and is now slightly less ugly.
Fix handling of empty table cells, rows (Albert Krewinkel, #2616). This fixes Org mode parsing of some corner cases regarding empty cells and rows. Empty cells weren't parsed correctly, e.g. ||| should be two empty cells, but would be parsed as a single cell containing a pipe character. Empty rows where parsed as alignment rows and dropped from the output.
Fix spacing after LaTeX-style symbols. The org-reader was droping space after unescaped LaTeX-style symbol commands: \ForAll \Auml resulted in ∀Ä but should give ∀ Ä instead. This seems to be because the LaTeX-reader treats the command-terminating space as part of the command. Dropping the trailing space from the symbol-command fixes this issue.
Print empty table rows. Empty table rows should not be dropped from the output, so row-height is always set to be at least 1.
Move parser state into separate module. The org reader code has become large and confusing. Extracting smaller parts into submodules should help to clean things up.
Add support for sub/superscript export options. Org-mode allows to specify export settings via #+OPTIONS lines. Disabling simple sub- and superscripts is one of these export options, this options is now supported.
Support special strings export option Parsing of special strings (like ... as ellipsis or -- as en dash) can be toggled using the - option.
Support emphasized text export option. Parsing of emphasized text can be toggled using the * option. This influences parsing of text marked as emphasized, strong, strikeout, and underline. Parsing of inline math, code, and verbatim text is not affected by this option.
Support smart quotes export option. Reading of smart quotes can be toggled using the ' option.
Parse but ignore export options. All known export options are parsed but ignored.
Refactor block attribute handling. A parser state attribute was used to keep track of block attributes defined in meta-lines. Global state is undesirable, so block attributes are no longer saved as part of the parser state. Old functions and the respective part of the parser state are removed.
Use custom anyLine. Additional state changes need to be made after a newline is parsed, otherwise markup may not be recognized correctly. This fixes a bug where markup after certain block-types would not be recognized.
Add support for ATTR_HTML attributes (#1906). Arbitrary key-value pairs can be added to some block types using a #+ATTR_HTML line before the block. Emacs Org-mode only includes these when exporting to HTML, but since we cannot make this distinction here, the attributes are always added. The functionality is now supported for figures.
Add :PROPERTIES: drawer support (#1877). Headers can have optional :PROPERTIES: drawers associated with them. These drawers contain key/value pairs like the header's id. The reader adds all listed pairs to the header's attributes; id and class attributes are handled specially to match the way Attr are defined. This also changes behavior of how drawers of unknown type are handled. Instead of including all unknown drawers, those are not read/exported, thereby matching current Emacs behavior.
Use CUSTOM_ID in properties. See above on Org writer changes.
Respect drawer export setting. The d export option can be used to control which drawers are exported and which are discarded. Basic support for this option is added here.
Ignore leading space in org code blocks (Emanuel Evans, #2862). Also fix up tab handling for leading whitespace in code blocks.
Support new syntax for export blocks. Org-mode version 9 uses a new syntax for export blocks. Instead of #+BEGIN_, where is the format of the block's content, the new format uses #+BEGIN_export instead. Both types are supported.
Refactor BEGIN...END block parsing.
Fix handling of whitespace in blocks, allowing content to be indented less then the block header.
Support org-ref style citations. The org-ref package is an org-mode extension commonly used to manage citations in org documents. Basic support for the cite:citeKey and [[cite:citeKey][prefix text::suffix text]] syntax is added.
Split code into separate modules, making for cleaner code and better decoupling.
Added docbook5 template.
--mathjax improvements:
Use new CommonHTML output for MathJax (updated default MathJax URL, #2858).
Change default mathjax setup to use TeX-AMS_CHTML configuration. This is designed for cases where the input is always TeX and maximal conformity with TeX is desired. It seems to be smaller and load faster than what we used before. See #2858.
Load the full MathJax config to maximize loading speed (KolenCheung).
Bumped upper version bounds to allow use of latest packages and compilation with ghc 8.
Require texmath 0.8.6.2. Closes several texmath-related bugs (#2775, #2310, #2310, #2824). This fixes behavior of roots, e.g. \sqrt[3]{x}, and issues with sub/superscript positioning and matrix column alignment in docx.
README:
Clarified documentation of implicit_header_references (#2904).
Improved documentation of --columns option.
Added appveyor setup, with artefacts (Jan Schulz).
stack.yaml versions: Use proper flags used for texmath, pandoc-citeproc.
LaTeX template: support for custom font families (vladipus). Needed for correct polyglossia operation with Cyrillic fonts and perhaps can find some other usages.
Create unsigned msi as build artifact in appveyor build.
On travis, test with ghc 8.0.1; drop testing for ghc 7.4.1.

New in Pandoc 1.17.0.2 (Mar 26, 2016)

New in Pandoc 1.17.0.1 (Mar 26, 2016)

New in Pandoc 1.17 (Mar 21, 2016)

Added --file-scope option (Jesse Rosenthal). By default pandoc operates on multiple files by first concatenating them (around extra line breaks) and then processing the joined file. So it only parses a multi-file document at the document scope. This has the benefit that footnotes and links can be in different files, but for some purposes it is useful to parse the individual files first and then combine their outputs. The --file-scope option causes pandoc to parse the files first, and then combine the parsed output, instead of combining before parsing. --file-scope is selected automatically for binary input files (which cannot be concatenated) and for pandoc json.
Add TEI Writer (Chris Forster) and tei output format.
Added a general ByteStringReader with warnings, used by the docx reader (API change, Jesse Rosenthal).
Add readDocxWithWarnings (API change, Jesse Rosenthal).
Changed type of Shared.uniqueIdent's argument from [String] to Set String. This avoids performance problems in documents with many identically named headers (API change, #2671).
Removed tex_math_single_backslash from markdown_github options (#2707).
Make language extensions as well as full language names trigger syntax highlighting. For example, py will now work as well as python (jgm/highlighting-kate#83).
Added institute variable to latex, beamer templates (Fraser Tweedale, Josef Svenningsson).
Docx reader (Jesse Rosenthal):
Handle alternate content. Some word functions (especially graphics) give various choices for content so there can be backwards compatibility.
Don't turn numbered headers into lists.
Docx Reader: Add state to the parser, for warnings
Update feature checklist in source code.
Get rid of Modifiable typeclass.
Add tests for adjacent hyperlinks.
Add a "Link" modifier to Reducible. We want to make sure that links have their spaces removed, and are appropriately smushed together (#2689).
HTML reader:
Fixed behavior of base tag (#2777). If the base path does not end with slash, the last component will be replaced. E.g. base = http://example.com/foo combines with bar.html to give http://example.com/bar.html. If the href begins with a slash, the whole path of the base is replaced. E.g. base = http://example.com/foo/ combines with /bar.html to give http://example.com/bar.html.
Rewrote htmlInBalanced. This version avoids an exponential performance problem with tags, and it should be faster in general (#2730).
Properly handle an empty cell in a simple table (#2718).
Handle multiple tags with same name. Put them in a list in the metadata so they are all preserved, rather than (as before) throwing out all but one..
Markdown reader:
Improved pipe table parsing (#2765).
Allow + separators in pipe table cells. We already allowed them in the header, but not in the body rows, for some reason. This gives compatibility with org-mode tables.
Don't cross line boundary parsing pipe table row. Previously an Emph element could be parsed across the newline at the end of the pipe table row.
Use htmlInBalanced for rawVerbatimBlock, for better performance (#2730).
Fixed bug with smart quotes around tex math.
LaTeX reader:
Handle interior $ characters in math (#2743). For example, $$\hbox{$i$}$$.
inlineCommand now gobbles an empty {} after any command (#2687). This gives better results when people write e.g. \TeX{} in Markdown.
Properly handle LaTeX "math" environment as inline math (#2171).
Textile reader: Support >,

New in Pandoc 1.16.0.2 (Jan 15, 2016)

New in Pandoc 1.16.0.1 (Jan 11, 2016)

New in Pandoc 1.15.2 (Nov 17, 2015)

pandoc my.md -t context -o my.pdf will now create a PDF using ConTeXt rather than LaTeX (#2463).
Fixed omitted url(...) in CSS data-uri with --self-contained (#2489).
Added emoji Markdown extension, enabled by default in markdown_github (#2523). Added Ext_emoji to Extension in Text.Pandoc.Options (API change).
Text.Pandoc.Readers.HTML.parseTags: Fixed over-eager raw HTML inline parsing (#2469). Tightened up the inline HTML parser so it disallows TagWarnings.
Derive Generic instances for the types in Text.Pandoc.Options.
Org reader:
Fix paragraph/list interaction (Albert Krewinkel, #2464). Paragraphs can be followed by lists, even if there is no blank line between the two blocks. However, this should only be true if the paragraph is not within a list, were the preceding block should be parsed as a plain instead of paragraph (to allow for compact lists). Thanks to @rgaiacs for bringing this up.
Allow toggling header args (Albert Krewinkel, #2269). Org-mode allows to skip the argument of a code block header argument if it's toggling a value. Argument-less headers are now recognized, avoiding weird parsing errors.
Fix markup parsing in headers (Albert Krewinkel, #2504). Markup as the very first item in a header wasn't recognized. This was caused by an incorrect parser state: positions at which inline markup can start need to be marked explicitly by changing the parser state. This wasn't done for headers. The proper function to update the state is now called at the beginning of the header parser, fixing this issue.
Fix emphasis rules for smart parsing (Albert Krewinkel, #2513). Smart quotes, ellipses, and dashes should behave like normal quotes, single dashes, and dots with respect to text markup parsing.
Require whitespace around definition list markers (#2518). This rule was not checked before, resulting in bugs with footnotes and some link types.
Markdown reader:
Pipe tables with long lines now get relative cell widths (#2471). If a pipe table contains a line longer than the column width (as set by --columns or 80 by default), relative widths are computed based on the widths of the separator lines relative to the column width. This should solve persistent problems with long pipe tables in LaTeX/PDF output, and give more flexibility for determining relative column widths in other formats, too. For narrower pipe tables, column widths of 0 are used, telling pandoc not to specify widths explicitly in output formats that permit this.
Improved parser for mmd_title_block. We now allow blank metadata fields. These were explicitly disallowed before.
Citation keys can now contain ://, so URLs and DOIs can be used as citation keys (jgm/pandoc-citeproc#166).
Beamer template: fix incompatibility of section slides with natbib. Natbib (and presumably biblatex) bibliography commands create their own section. Since these are in frame environments, we have an incompatibility with the \AtBeginSection macro which creates a special frame when a new section occurs. (We can't have a frame inside another frame.) This change disables \AtBeginSection inside bibliography slides. Thinks to Yihui Xie for bringing the problem to my attention. This supersedes #145. See discussion there.
Textile reader: don't do smart punctuation unless explicitly asked (#2480). Note that although smart punctuation is part of the textile spec, it's not always wanted when converting from textile to, say, Markdown. So it seems better to make this an option.
LaTeX reader: Handle comment environment (Arata Mizuki). The comment environment is handled in a similar way to the verbatim environment, except that its content is discarded.
Docx reader: Follow relationships correctly in foot/endnotes (#2258, Jesse Rosenthal). This fixes a problem with links in notes.
LaTeX and ConTeXt writers: support lang attribute on divs and spans (mb21). For LaTeX, also collect lang and dir attributes on spans and divs to set the lang, otherlangs and dir variables if they aren’t set already. See #895.
LaTeX writer:
Use proper command for \textarabic (mb21).
Added de-CH-1901, fixed el-polyton in toPloyglossia (Nick Bart).
Use \hypertarget and \hyperlink for links. This works correctly to link to Div or Span elements. We now don't bother defining \label for Div or Span elements. Closes jgm/pandoc-citeproc#174.
Avoid footnotes in list of figures (#1506).
Properly handle footnotes in captions (#1506).
Add \protect to \hyperlink (#2490). Thanks to Hadrien Mary.
Set colorlinks if linkcolor, urlcolor, citecolor, or toccolor is set (#2508).
Textile writer: support start number in ordered lists (#2465).
OpenDocument writer: Allow customization of opendocument automatic styles. Automatic styles can now be inserted in the template, which now provides the enclosing tags (#2520).
Docx writer: insert space between footnote reference and note (#2527). This matches Word's default behavior.
EPUB writer: don't download linked media when data-external attribute set (#2473). By default pandoc downloads all linked media and includes it in the EPUB container. This can be disabled by setting data-external on the tags linking to media that should not be downloaded.
HTML writer: use width on whole table if col widths sum to < 100%. Otherwise some browsers display the table with the columns separated far apart.
AsciiDoc template: Fix author and date; add keywords, abstract (Andrew Dunning).
HTML-based templates (Andrew Dunning):
Use en dash instead of hyphen between title prefix and title.
Add keywords to metadata.
Add lang, dir, quotes where missing.
Always make author and date display conditional.
Updated dzslides template from source.
Man template: make "generated by" comment conditional.
LaTeX, Beamer templates:
Add babel-otherlangs for language divs/spans; babel-newcommands, filled by commands that make babel understand the polyglossia-style language directives (mb21, #137).
Improved formatting of conditionals; $for$ is always provided to allow multiple options (Andrew Dunning, #141).
Use Ligatures=TeX rather than Mapping=tex-text with fontspec to improve support for LuaTeX (Andrew Dunning, #135).
Revise hyperref usage (Andrew Dunning, #139, #141):
use same options for all LaTeX engines;
add subtitle and keywords to PDF metadata;
do not override hyperref link coloring without user input, effectively making the hidelinks option the default (removed as a separate variable);
link colors can be enabled (using a slightly darker version of the old defaults) using a new colorlinks variable, automatically used by the LaTeX writer when custom colors are specified;
pdfborder={0 0 0} is automatically set by hyperref with colorlinks, and is only applied if colorlinks is disabled.
ConTeXt template (Andrew Dunning):
New variables for controlling styles: linkstyle, linkcolor, linkcontrastcolor, layout, pagenumbering, whitespace, indenting, interlinespace, headertext, footertext, mainfont, sansfont, monofont, mathfont, fontsize.
Default template no longer supports MkII.
Improve writing of title block (suppressing numbering of first page).
Add title subtitle, author, date, keywords to PDF metadata.
Support subtitle, abstract.
Support list of figures (lof), list of tables (lot).
Disable link styling by default.
Define styles for all section types.
Enable microtype.
Improved formatting of conditionals.
Beamer template: added code to prevent slide breaks inside paragraphs (#2422, thanks to Nick Bart). This will matter, in practice, only when allowframebreaks is used. It is especially helpful for bibliography slides.
OpenDocument template: Add tag around automatic styles. The writer now longer provides this (see #2520).
Restored Text.Pandoc.Compat.Monoid.
Do not export () from custom Prelude. The Prelude now matches base 4.8 Prelude's API.
Don't use custom prelude with ghc 7.10. Use the custom prelude only for earlier versions. This change makes stack ghci and cabal repl work (#2503), at least with ghc 7.10.
Changed § to % in operators from Odt.Arrows.Utils (#2457). This prevents problems building haddocks with "C" locale.
Change default for old-locale flag to False.
Use stack in deb, osx, and Windows package generators.
Added Vagrantfile for building deb in vm. This should help in automating binary package creation. 'make package' will make the package. 'make package COMMIT=blah' will make the package from commit blah.
README:
Consistent capitalization for pandoc and Markdown.
Fixed auto_identifiers examples (Benoit Schweblin).
Improved documentation of template variables (Andrew Dunning).

New in Pandoc 1.15.1.1 (Nov 4, 2015)

New in Pandoc 1.15.0.6 (Jul 16, 2015)

New in Pandoc 1.15.0.5 (Jul 15, 2015)

New in Pandoc 1.15.0.4 (Jul 15, 2015)

New in Pandoc 1.15.0.3 (Jul 15, 2015)

New in Pandoc 1.15.0.2 (Jul 15, 2015)

New in Pandoc 1.15.0.1 (Jul 15, 2015)

New in Pandoc 1.15 (Jul 3, 2015)

New in Pandoc 1.14.1 (Jul 1, 2015)

Added --man1 and --man5 options to pandoc, allowing pandoc to generate its own man pages. Man pages are no longer automatically generated in the build process (the process for this was too complex and prone to failure, #2190). The make-pandoc-man-pages executable has been removed. The man/ directory has been removed, and man page templates have been moved to data/. NOTE TO PACKAGERS: You will no longer find pandoc's man pages in man/, but you can generate them using pandoc --man1 > pandoc.1 and pandoc --man5 > pandoc_markdown.5.
Added new unexported module: Text.Pandoc.ManPages.
README now acts like a data file (even though it isn't in data/). So, for example, pandoc --print-default-data-file README will produce the README.) This change was required for the --man1 and --man5 options, since the man pages are produced from the README, but it may be useful for other purposes as well.
Allow reference.docx and reference.odt to be used with --print-default-data-file and to shadow defaults if placed in the user data directory. Note that as of 1.14, we no longer include these files as data files; instead, we include their components. This change causes pandoc to behave as if it has these data files; they are constructed on demand when needed using getDefaultReferenceDocx and getDefaultReferenceODT.
Fixed regression in CSS parsing with --self-contained (#2224). Pandoc 1.14.0.x used css-text to parse the CSS, but its parser silently drops big sections of CSS. This commit replaces the use of css-text with a small but principled CSS preprocessor, which removes whitespace and comments and replaces url() with base 64 data when possible.
Use https:// instead of // for MathJax and KaTeX CDN URLs (#1920). This will allow math to work when pages are being viewed locally.
Text.Pandoc.Options: Export plainExtensions. These are the extensions used in plain output.
LaTeX reader: Don't parse _ and ^ as sub/superscript outside of math mode; treat them as regular inline text. Normally these will cause an error in LaTeX, but there are contexts (e.g. alltt environments) where they are allowed.
HTML reader: allow to close .
DocBook reader: support mediaobjects and figures (#2184, mb21).
RST reader: Fix reference names with special characters (Lars-Dominik Braun).
Textile writer: escape + and - as entities (#2225).
DokuWiki writer: Use proper tags for code blocks (#2213).
Plain writer: don't use symbols for super/subscript (#2237). Simplified code by using plainExtensions.
InDesign writer: Properly escape URLs containing more than one colon character (gohai).
Docx writer: Make sure we use dist version of reference.docx (and not the user's version) for certain settings. Taking some settings values from a user-supplied reference.docx can lead to corruption. This fixes a regression from the last release (#2249).
Text.Pandoc.Shared: exports getDefaultReferenceDocx and getDefaultReferenceODT (API change). These functions have been removed from the Docx and ODT writers.
LaTeX template (Xavier Olive):
Added CJKmainfont and CJKoptions variables.
Allow dvipsnames (e.g. MidnightBlue) for colors (Xavier Olive).
Epub templates: use author.role, not author.type.
Bump cmark version to >= 0.3.4.
Improved Windows installer (#2205, thanks to nkalvi). Users can now select a per-user or systemwide install, and can set the installation path. At the end of installation, the install location is given. The install location is also now given in the list of installed programs in Control Panel. Cleaner WiX syntax is used for setting the path.
Added download_stats target to Makefile.

New in Pandoc 1.14.0.1 (Jun 1, 2015)

New in Pandoc 1.14 (Jun 1, 2015)

NEW FEATURES:
Added commonmark as input and output format.
Added --verbose flag for debugging output in PDF production (#1840, #1653).
Allow wildcards in --epub-embed-font arguments (#1939).
Added --latex-engine-opt option.
Added shortcut_reference_links extension. This is enabled by default for those markdown flavors that support reading shortcut reference links, namely: markdown, markdown_strict, markdown_github, markdown_php. If the extension is enabled, the reader parses shortcut reference links like [foo], and the writer creates such links unless doing so would cause problems. Users of markdown flavors that support shortcut reference links should not notice a difference in reading markdown, but the markdown pandoc produces may differ. If shortcut links are not desired, the extension can be disabled in the normal way.
Behavior changes:
--toc is now supported for docx output. A "dirty" TOC is created at the beginning of document. It can be regenerated after the document has been opened.
An implicit --filter pandoc-citeproc is now triggered only when the --bibliography option is used, and not when the bibliography field in metadata is specified (#1849).
Markdown reader:
Reference links with implicit_header_references are no longer case-sensitive (#1606).
Definition lists no longer require indentation for first line (#2087). Previously the body of the definition (after the : or ~ marker) needed to be in column 4. This commit relaxes that requirement, to better match the behavior of PHP Markdown Extra.
Resolve a potentially ambiguity with table captions
Is "bar" a definition, or the caption for the table? We'll count it as a caption for the table.
Disallow headerless pipe tables (#1996), to conform to GFM and PHP Markdown Extra. Note: If you have been using headerless pipe tables, this change may cause existing tables to break.
Allow pipe tables with header but no body (#2017).
Allow a digit as first character of a citation key.
LaTeX reader:
Don't limit includes to .tex extension (#1882). If the extension is not .tex, it must be given explicitly in the \input or \include.
Docx reader:
Allow numbering in the style file. This allows inherited styles with numbering (lists).
Org reader:
Support smart punctuation.
Drop trees with a :noexport: tag. Trees having a :noexport: tag set are not exported. This mirrors org-mode.
Put header tags into empty spans. Org mode allows headers to be tagged: * Headline :TAG1:TAG2. Instead of being interpreted as part of the headline, the tags are now put into the attributes of empty spans. Spans without textual content won't be visible by default, but they are detectable by filters. They can also be styled using CSS when written as HTML.
Generalize code block result parsing. Previously, only code blocks were recognized as result blocks; now, any kind of block can be the result.
Append newline to the LineBreak in Dokuwiki, HTML, EPUB, LaTeX, MediaWiki, OpenDocument, Texinfo writers (#1924, Tim Lin).
HTML writer:
Add "inline" or "display" class to math spans (#1914). This allows inline and display math to be styled differently.
Include raw latex blocks if --mathjax specified (#1938).
Require highlighting-kate >= 0.5.14 (#1903). This ensures that all code blocks will be wrapped in a div with class sourceCode. Also, the default highlighting CSS now adds div.sourceCode { x-overflow: auto; }, which means that code blocks (even with line numbers) will acquire a scroll bar on screens too small to display them (e.g. mobile phones).
LaTeX writer:
Use a declaration for tight lists. Previously, pandoc hard-coded some commands to make tight lists in LaTeX. Now we use a custom command instead, allowing the styling to be changed in a macro in the header. (Note: existing templates may need to be modified to include the definition of this macro. See the current template.)
Beamer output: if the header introducing a slide has the class fragile, add the [fragile] option to the slide (#2119).
MediaWiki writer:
Use File: instead of the deprecated Image: for images and other media files.
DocBook writer:
Render a Div (id,_,_) [Para _] element as a para element with an id attribute. This makes links to citations work in DocBook with pandoc-citeproc.
RST writer:
Normalize headings to sequential levels. This is pretty much required by docutils.
Treat headings in block quotes, etc as rubrics.
Better handling of raw latex inline (#1961). We use :raw-latex:`...` and add a definition for this role to the template.
EPUB writer:
Remove linear=no from cover itemref (#1609).
Don't use sup element for epub footnotes (#1995). Instead, just use an a element with class footnoteRef. This allows more styling options, and provides better results in some readers (e.g. iBooks, where anything inside the a tag breaks popup footnotes).
Take TOC title from toc-title metadata field.
Docx writer:
Implemented FirstParagraph style. Following the ODT writer, we add the FirstParagraph style to the first text paragraph following an image, blockquote, table, heading, or beginning of document. This allows it to be styled differently. The default is for it to be the same as Normal.
Added BodyText style We apply a BodyText style to all unstyled paragraphs. This is, essentially, the same as Normal, except that since not everything inherits from BodyText (the metadata won't, for example, or the headers or footnote numbers), we can change the text in the body without having to make exceptions for everything. If we do want to change everything, we can still do it through Normal.
Altered Blockquote style slightly. Since BlockQuote derives from BodyText, we just want to specify by default that it won't indent, regardless of what BodyText does. Note that this will not produce any visible difference in the default configuration.
Take TOC title from toc-title metadata field.
Added a style to figure images. Figures with empty captions use style Figure. Figures with nonempty captions use style Figure with Caption, which is based on Figure, and additionally has keepNext set.
ODT writer:
Added figure captions. The following styles are used for figures: Figure -- for figure with empty caption), FigureWithCaption (based on Figure) -- for figure with caption, FigureCaption (based on Caption) -- for figure captions. Also, TableCaption (based on Caption) is used for table captions.
API changes:
New Text.Pandoc.Error module with PandocError type.
All readers now return Either PandocError Pandoc instead of Pandoc. This allows better handling of errors.
Added Text.Pandoc.Writers.CommonMark, exporting writeCommonMark.
Added Text.Pandoc.Readers.CommonMark, exporting readCommonMark.
Derive Data and Typeable instances for MediaBag, Extension, ReaderOptions, EPUBVersion, CiteMethod, ObfuscationMethod, HTMLSlideVariant, TrackChanges, WriterOptions.
New Ext_shortcut_reference_links constructor for Extension.
BUG FIXES:
Markdown reader:
Allow smart ' after inline math (#1909).
Check for tex macros after indented code (#1973).
Rewrote charsInBalancedBrackets for efficiency.
Make sure a closing doesn't get included in a definition list item (#2127).
Don't parse bracketed text as citation if it might be a link, image, or footnote.
Require space after key in mmd title block (#2026). Require space after key-value delimiter colon in mmd title block.
Require nonempty value in mmd title block.
Disable all metadata block extensions when parsing metadata field values (#2026). Otherwise we could get a mmd title block inside YAML metadata, for example.
HTML reader:
Improve self-closing tag detection in htmlInBalanced (#2146).
Handle tables with in body rows (#1859, mb21).
Fixed htmlTag (#1820). If the tag parses as a comment, we check to see if the input starts with

New in Pandoc 1.13.2 (Dec 22, 2014)

This is mainly a spit-and-polish release, though there is one new reader and some minor new features.
TWiki Reader: add new new twiki reader (API chaneg).
Markdown reader:
Better handling of paragraph in div . Previously text that ended a div would be parsed as Plain unless there was a blank line before the closing div tag.
Don't treat a citation as a reference link label.
Fix autolinks with following punctuation The price of this is that autolinked bare URIs can no longer contain > characters, but this is not a big issue.
Fix Ext_lists_without_preceding_blankline bug.
Allow startnum to work without fancy_lists. Formerly pandoc -f markdown-fancy_lists+startnum did not work properly.
RST reader:
Parse quoted literal blocks (#65). RST quoted literal blocks are the same as indented literal blocks (which pandoc already supports) except that the quote character is preserved in each line.
Parse RST class directives. The class directive accepts one or more class names, and creates a Div value with those classes. If the directive has an indented body, the body is parsed as the children of the Div. If not, the first block folowing the directive is made a child of the Div. This differs from the behavior of rst2xml, which does not create a Div element. Instead, the specified classes are applied to each child of the directive. However, most Pandoc Block constructors to not take an Attr argument, so we can't duplicate this behavior.
Warn about skipped directives.
Literal role now produces Code. Code role should have "code" class.
Improved support for custom roles
Added sourceCode to classes for :code: role, and anything inheriting from it.
Add the name of the custom role to classes if the Inline constructor supports Attr.
If the custom role directive does not specify a parent role, inherit from the :span: role.
This differs somewhat from the rst2xml.py behavior. If a custom role inherits from another custom role, Pandoc will attach both roles' names as classes. rst2xml.py will only use the class of the directly invoked role (though in the case of inheriting from a :code: role with a :language: defined, it will also provide the inherited language as a class).
Warn about ignored fields in role directives.
LaTeX reader:
Parse label after caption into a span instead of inserting an additional paragraph of bracketed text
Parse math environments as inline when possible
Better handling of \noindent and \greektext
Handle \texorpdfstring more gracefully.
Handle \cref and \sep (Wikiwide).
Support \smartcite and \Smartcite from biblatex.
HTML reader:
Retain display type of MathML output
Recognise tags inside blocks
Make embed tag either block or inline
DocBook reader:
Handle keycombo, keycap.
Get string content in inner tags for literal elements .
Handle menuchoice elements better, with a > between
Include id on section headers .
Document/test "type" as implemented
Add support for calloutlist and callout. We treat a calloutlist as a bulleted list. This works well in practice.
Add support for classname
Docx reader:
Fix window path for image lookup. Don't use os-sensitive "combine", since we always want the paths in our zip-archive to use forward-slashes.
Single-item headers in ordered lists are headers. When users number their headers, Word understands that as a single item enumerated list. We make the assumption that such a list is, in fact, a header.
Rewrite rewriteLink to work with new headers . There could be new top-level headers after making lists, so we have to rewrite links after that.
Use polyglot header list . We're just keeping a list of header formats that different languages use as their default styles. At the moment, we have English, German, Danish, and French. We can continue to add to this. This is simpler than parsing the styles file, and perhaps less error-prone, since there seems to be some variations, even within a language, of how a style file will define headers.
Remove header class properly in other langs. When we encounter one of the polyglot header styles, we want to remove that from the par styles after we convert to a header. To do that, we have to keep track of the style name, and remove it appropriately.
Account for external link URLs with anchors. Previously, if a URL had an anchor, the reader would incorrectly identify it as an internal link and return only the anchor as URL.
Fix for Issue #1692 (i18n styles)
Org reader:
Added state changing blanklines. This allows us to emphasize at the beginning of a new paragraph (or, in general, after blank lines).
Fixed bug with bulleted lists:
was being parsed as a list, even though an unindented * should make a heading.
Org reader: absolute, relative paths in link. The org reader was too restrictive when parsing links; some relative links and links to files given as absolute paths were not recognized correctly.
Org reader: allow empty links . This is important for use in gitit, which uses empty links for wikilinks.
Respect indent when parsing Org bullet lists . Fixes issue with top-level bullet list parsing.
Fix indent issue for definition lists
Parse multi-inline terms correctly in definition list
Fix rules for emphasis recognition. Things like /hello,/ or /hi'/ were falsy recognized as emphasised strings. This is wrong, as , and ' are forbidden border chars and may not occur on the inner border of emphasized text.
Drop COMMENT document trees. Document trees under a header starting with the word COMMENT are comment trees and should not be exported. Those trees are dropped silently.
Properly handle links to file:target . Org links like [[file:target][title]] were not handled correctly, parsing the link target verbatim. The org reader is changed such that the leading file: is dropped from the link target
Parse LaTeX-style MathML entities . Org supports special symbols which can be included using LaTeX syntax, but are actually MathML entities. Examples for this are \nbsp (non-breaking space), \Aacute (the letter A with accent acute) or \copy (the copyright sign ©)
EPUB reader:
URI handling improvements. Now we outsource most of the work to fetchItem'. Also, do not include queries in file extensions.
LaTeX writer:
Use \texorpdfstring for section captions when needed.
Handle consecutive linebreaks .
Protect graphics in headers . Graphics in \section/\subsection etc titles need to be \protected.
Put ~ before header in list item text (Jesse Rosenthal). Because of the built-in line skip, LaTeX can't handle a section header as the first element in a list item.
Avoid using reserved characters as \lstinline delimiters.
Better handling of display math in simple tables. We convert display math to inline math in simple tables, since LaTeX can't deal with display math in simple tables.
Escape spaces in code.
MediaWiki writer:
Fixed links with URL = text. Previously these were rendered as bare words, even if the URL was not an absolute URL.
ICML writer:
Don't force all citations into footnotes.
RTF writer:
Add blankline at end of output .
RST writer:
Ensure blank line after figure.
Avoid exces whitespace after last list item .
Wrap line blocks with spaces before continuations .
Fixed double-rendering of footnotes in RST tables .
DokuWiki writer:
Better handling of block quotes. This change ensures that multiple paragraph blockquotes are rendered using native > rather than as HTML .
Fix external images . Preface relative links with ":", absolute URIs without.
HTML writer:
Use protocol-relative URL for mathjax.
Put newline btw img and caption paragraph.
MathML now outputted with tex annotation.
Add support for KaTeX HTML math. This adds KaTeX to HTMLMathMethod (API change).
Don't double render when email-obfuscation=none.
Make header attributes work outside top level. Previously they only appeared on top level header elements. Now they work e.g. in blockquotes.
ODT writer:
Correctly handle images without extensions.
Strip querystring in ODT write.
FB2 writer:
Add newline to output.
EPUB writer:
Don't add sourceURL to absolute URIs .
Don't use unsupported opf:title-type for epub2.
Include "landmarks" section in nav document for epub3.
Removed playOrder from navpoint elements in ncx file . These aren't required, and they make manual modification of epubs difficult.
Extract title even from structured title.
Don't include nav node in spine unless --toc was requested. Previously we included it in the spine with linear="no", leading to odd results in some readers.
Fixed absolute URI detection.
Correctly resolve relative URIs .
Use regular page template for nav.xhtml, including doctype .
Docx writer:
Put docx table captions above tables
Get the page width from the reference docx file, and use it to scale images that are too large to fit (Grégory Bataille).
Partial fix for #1607 (Nikolay Yakimov). International heading styles are inferred based on fallback, if there are no en-US "Heading#" styles
Look in user data dir for archive reference.docx.
Renumber header and footer relationships to avoid collisions (Jesse Rosenthal). We previously took the old relationship names of the headers and footer in secptr. That led to collisions. We now make a map of availabl names in the relationships file, and then rename in secptr.
ConTeXt writer:
Add function toLabel (Mark Szepieniec). This function can be used to sanitize reference labels so that they do not contain any of the illegal characters #[]",{}%()|= . Currently only Links have their labels sanitized, because they are the only Elements that use passed labels.
Text.Pandoc.Shared:
Moved import of toChunks outside of CPP conditional.
Fix inDirectory to reset to the original directory in case an exception occurs (Freiric Barral).
Templates:
LaTeX template: load polyglossia before bibtex (jgm/pandoc-templates#70). Thanks to bluebirch.
LaTeX template: Added \VerbatimFootnotes if there is verbatim in notes
LaTeX template: Add shorthands=off to babel options .
EPUB, EPUB3 templates: Added id="cover" to body of cover page. This aids styling, making it possible for example to set 0 margins on the title page.
EPUB, EPUB3 templates: Handle structured metadata on titlepage. Previously we just expected 'title', 'subtitle', 'author', 'date'. Now we still support those, but also support the format recommended for epub metadata in the pandoc README:
Text.Pandoc.Templates.getDefaultTemplate: don't fail when called with "fb2" .
Text.Pandoc.Parsing:
Fixed inlineMath so it handles \text{..} containing $. For example: $x = \text{the $n$th root of $y$}.
Change parseFromString to fail if not all input is consumed.
Moved addWarning from Markdown reader to Parsing, so it can be used by more readers (API change,).
Text.Pandoc.Pretty:
Improve performance of realLength blank line we were getting at the end of markdown fragments (as well as rst, org, etc.)
Text.Pandoc.MIME:
Add mime type for WebVTT (Jason Ronallo).
Changed mime type for otf to application/vnd.ms-opentype This is needed for epub3 validation.
Text.Pandoc.MediaBag:
Fix Windows specific path problems.
Text.Pandoc.Shared:
Make collapseFilePath OS-agnostic (Matthew Pickering).
Link the test suite using -threaded. This allows the test suite to be run using +RTS -N.
Added network dependency under network-uri flag in test section.
Give better error messages when someone tries to convert from pdf, doc, odt
Added track to list of tags treated by --self-contained.

New in Pandoc 1.13.1 (Sep 8, 2014)

Fixed - self-contained with Windows paths (#1558). Previously C:\foo.js was being wrongly interpreted as a URI.
HTML reader: improved handling of tags that can be block or inline. Previously a section like this would be enclosed in a paragraph, with RawInline for the video tags (since video is a tag that can be either block or inline):
The videos can not be played back on your system.
Try viewing on Youtube (requires Internet connection):
Relative Velocity on
Youtube.
This change will cause the video and source tags to be parsed as RawBlock instead, giving better output. The general change is this: when we're parsing a "plain" sequence of inlines, we don't parse anything that COULD be a block-level tag.
Docx reader:
Be sensitive to user styles. Note that "Hyperlink" is "blacklisted," as we don't want the default underline styling to be inherited by all links by default
Read single paragraph in table cell as Plain. This makes to docx reader's native output fit with the way the markdown reader understands its markdown output.
Textile writer: Extended the range of cases where native textile tables will be used (as opposed to raw HTML): we now handle any alignment type, but only for simple tables with no captions.
Txt2Tags reader:
Header is now parsed only if standalone flag is set (Matthew Pickering).
The header is now parsed as meta information. The first line is the title, the second is the author and third line is the date (Matthew Pickering).
Corrected formatting of %%mtime macro (Matthew Pickering).
Fixed crash when reading from stdin.
EPUB writer: Don't use page-progression-direction in EPUB2, which doesn't support it. Also, if page-progression-direction not specified in metadata, don't include the attribute even in EPUB3; not including it is the same as including it with the value "default", as we did before. (#1550)
Org writer: Accept example lines with indentation at the beginning (Calvin Beck).
DokuWiki writer:
Refactor to use Reader monad
Avoid using raw HTML in table cells; instead, use \\ instead of newlines
Properly handle HTML table cell alignments, and use spacing to make the tables look prettier (#1566).
Docx writer:
Bibliography entries get Bibliography style (#1559).
Implement change tracking
LaTeX writer:
Fixed a bug that caused a table caption to repeat across all pages
Improved vertical spacing in tables and made it customizable using standard lengths set by booktab.
Added \strut to fix spacing in multiline tables .
Use \tabularnewline instead of \\ in table cells
Made horizontal rules more flexible
Text.Pandoc.MIME:
Added MimeType (type synonym for String) and getMimeTypeDef. Code cleanups
Templates:
LaTeX template: disable microtype protrusion for typewriter font
Improved OSX build procedure.
Added network-uri flag, to deal with split of network-uri from network.
Fix build dependencies for the trypandoc flag, so that they are ignored if trypandoc flag is set to False
Updated README to remove outdated claim that --self-contained looks in the user data directory for missing files.