%D \module
%D   [       file=x-markdown,
%D        version=2011.07.19, % 2025.07.19
%D          title=\CONTEXT\ Modules,
%D       subtitle=Processing MarkDown,
%D         author=Hans Hagen,
%D           date=\currentdate,
%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.

\writestatus{loading}{ConTeXt Modules / MarkDown Renderer}

% This module deals with markdown which is a document encoding that some \CONTEXT\
% users seem to like. It reminds me of the kind of minimal coding we used before we
% ran into \TEX\ and were using a somewhat simple rendering (pagination, etc) of
% documents. As I'm no user myself, it is up to others to provide documentation and
% examples.
%
% [2025] At some point this module was removed from the distribution but still
% around in my development tree. So I had to decide: either keep this oldie around
% for historic reasons, or remove it. It probably will not be used anyway so it's
% harmless to keep around in a less perfect state. For the record: I was never much
% onto markdown but somehow got involved in the parser which I cleaned up and gave
% a performance boost. Then it went back to where it came from and I lost track of
% it. So, what we have here is likely not all okay and in sync with the latest
% specifications but one can argue that when one really needs all these extensions
% (like html) then one can as well code in \TEX. In fact, all these \quotation
% {start as simple input to make life easier} projects in the end arrive at a
% certain complexity level that make \TEX\ input looks simple. So, we only need to
% support the intended \quote {simple input} its here. If you need more, just shop
% around a bit (there is for instance a \CONTEXT\ backend for Pandoc.)
%
% I'll fix issues when user come up with demands as I have no examples myself,
% but within the constraints of simplicity. Using Pandoc with Aditya's filter
% module is a valid alternative.
%
% There have been discussions for asciidoc and also presentations at the meetings
% so I need to spend soem time on that.

\registerctxluafile{m-markdown.lmt}{}

\unprotect

% We just provide a basic interface:

\definebuffer
  [markdown]

\permanent\protected\def\stopmarkdown
  {\ctxlua{moduledata.markdown.typesetbuffer("\thedefinedbuffer{markdown}")}}

\permanent\protected\def\processmarkdownfile#1% maybe [] or both
  {\ctxlua{moduledata.markdown.typesetfile("#1")}}

\permanent\protected\def\markdown#1% maybe [] or both
  {\ctxlua{moduledata.markdown.typesetstring(\!!bs#1\!!es)}}

% commands

\defineitemgroup
  [markdownitemize]

\definetyping
  [markdowntyping]

\definetype
  [markdowntype]

\definetype
  [markdowninlinehtml]

\definetyping
  [markdowndisplayhtml]

\definedelimitedtext
  [markdownblockquote]
  [quotation]

\definehighlight
  [markdownemphasis]
  [style=\em]

\definehighlight
  [markdownstrong]
  [style=\bf]

\definestructurelevels
  [markdown]
  [\v!chapter,
   \v!section,
   \v!subsection,
   \v!subsubsection,
   \v!subsubsubsection,
   \v!subsubsubsubsection]

\permanent\protected\def\markdownrule
  {\hairline\par}

\protect

\continueifinputfile{m-markdown.mkxl}

\starttext

\startmarkdown
Test
====
* Test
    * Test
* Test
    * Test
* Test

Test
====

> test
> test
> test

test

Test
====

> test
> test
> test

test
\stopmarkdown

\stoptext