mmark-filter is a markdown filter. It takes in a markdown file (possibly on standard input) and translates the input according to a bunch of filters (implemented as plugins).

Currently these plugins exist:

• noop, a plugin that does nothing.

• emph, a plugin that replaces *emphasis* with XXemphasisXX, added mostly as an example.

• exec, a plugin the runs a command using the codeblock contents and replaces it with an image.

• rot13, a plugin that rot13's all text, but leaves all other elements alone.

• protocol, a plugin that runs protocol on the contents of a codeblock and replaces the codeblock's content with its output. Comes in handy when writting IETF drafts.