John MacFarlane
efbc205031
The reader now parses the contents of the markdown cell to a Pandoc structure, but *also* stores the raw markdown in a `source` attribute on the cell Div. When we convert back to markdown, this attribute is stripped off and the original source is used. When we convert to other formats, the attribute is usually ignored (though it will come through in HTML as a `data-source` attribute, not unhelpfully). I'll note some potential drawbacks of this approach: - It makes it impossible to use pandoc to clean up or change the contents of markdown cells, e.g. going from `+smart` to `-smart`. - There may be formats where the addition of the `source` attribute is problematic. I can't think of any, though. Closes #5408.
Pandoc
The universal markup converter
Pandoc is a Haskell library for converting from one markup format to another, and a command-line tool that uses this library. It can convert from
commonmark(CommonMark Markdown)creole(Creole 1.0)csv(CSV table)docbook(DocBook)docx(Word docx)dokuwiki(DokuWiki markup)epub(EPUB)fb2(FictionBook2 e-book)gfm(GitHub-Flavored Markdown), or the deprecated and less accuratemarkdown_github; usemarkdown_githubonly if you need extensions not supported ingfm.haddock(Haddock markup)html(HTML)ipynb(Jupyter notebook)jats(JATS XML)jira(Jira/Confluence wiki markup)json(JSON version of native AST)latex(LaTeX)markdown(Pandoc’s Markdown)markdown_mmd(MultiMarkdown)markdown_phpextra(PHP Markdown Extra)markdown_strict(original unextended Markdown)mediawiki(MediaWiki markup)man(roff man)muse(Muse)native(native Haskell)odt(ODT)opml(OPML)org(Emacs Org mode)rst(reStructuredText)t2t(txt2tags)textile(Textile)tikiwiki(TikiWiki markup)twiki(TWiki markup)vimwiki(Vimwiki)
It can convert to
asciidoc(AsciiDoc) orasciidoctor(AsciiDoctor)beamer(LaTeX beamer slide show)commonmark(CommonMark Markdown)context(ConTeXt)docbookordocbook4(DocBook 4)docbook5(DocBook 5)docx(Word docx)dokuwiki(DokuWiki markup)epuborepub3(EPUB v3 book)epub2(EPUB v2)fb2(FictionBook2 e-book)gfm(GitHub-Flavored Markdown), or the deprecated and less accuratemarkdown_github; usemarkdown_githubonly if you need extensions not supported ingfm.haddock(Haddock markup)htmlorhtml5(HTML, i.e. HTML5/XHTML polyglot markup)html4(XHTML 1.0 Transitional)icml(InDesign ICML)ipynb(Jupyter notebook)jats_archiving(JATS XML, Archiving and Interchange Tag Set)jats_articleauthoring(JATS XML, Article Authoring Tag Set)jats_publishing(JATS XML, Journal Publishing Tag Set)jats(alias forjats_archiving)jira(Jira/Confluence wiki markup)json(JSON version of native AST)latex(LaTeX)man(roff man)markdown(Pandoc’s Markdown)markdown_mmd(MultiMarkdown)markdown_phpextra(PHP Markdown Extra)markdown_strict(original unextended Markdown)mediawiki(MediaWiki markup)ms(roff ms)muse(Muse),native(native Haskell),odt(OpenOffice text document)opml(OPML)opendocument(OpenDocument)org(Emacs Org mode)pdf(PDF)plain(plain text),pptx(PowerPoint slide show)rst(reStructuredText)rtf(Rich Text Format)texinfo(GNU Texinfo)textile(Textile)slideous(Slideous HTML and JavaScript slide show)slidy(Slidy HTML and JavaScript slide show)dzslides(DZSlides HTML5 + JavaScript slide show),revealjs(reveal.js HTML5 + JavaScript slide show)s5(S5 HTML and JavaScript slide show)tei(TEI Simple)xwiki(XWiki markup)zimwiki(ZimWiki markup)- the path of a custom Lua writer, see Custom writers below
Pandoc can also produce PDF output via LaTeX, Groff ms, or HTML.
Pandoc’s enhanced version of Markdown includes syntax for tables, definition lists, metadata blocks, footnotes, citations, math, and much more. See the User’s Manual below under Pandoc’s Markdown.
Pandoc has a modular design: it consists of a set of readers, which parse text in a given format and produce a native representation of the document (an abstract syntax tree or AST), and a set of writers, which convert this native representation into a target format. Thus, adding an input or output format requires only adding a reader or writer. Users can also run custom pandoc filters to modify the intermediate AST (see the documentation for filters and Lua filters).
Because pandoc’s intermediate representation of a document is less expressive than many of the formats it converts between, one should not expect perfect conversions between every format and every other. Pandoc attempts to preserve the structural elements of a document, but not formatting details such as margin size. And some document elements, such as complex tables, may not fit into pandoc’s simple document model. While conversions from pandoc’s Markdown to all formats aspire to be perfect, conversions from formats more expressive than pandoc’s Markdown can be expected to be lossy.
Installing
Here’s how to install pandoc.
Documentation
Pandoc’s website contains a full User’s Guide. It is also available here as pandoc-flavored Markdown. The website also contains some examples of the use of pandoc and a limited online demo.
Contributing
Pull requests, bug reports, and feature requests are welcome. Please make sure to read the contributor guidelines before opening a new issue.
License
© 2006-2020 John MacFarlane (jgm@berkeley.edu). Released under the GPL, version 2 or greater. This software carries no warranty of any kind. (See COPYRIGHT for full copyright and warranty notices.)