• 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.
• HTML writer (slide show formats): In slide shows, don't change slide title to level 1 header (#2221).
• TEI writer: remove heuristic to detect book template (Albert Krewinkel). TEI doesn't have <book> elements but only generic <divN> division elements. Checking the template for a trailing </book> 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 <p> instead of <h1> 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.