jgm/yst — pull request #24 by league (2012-03-21 19:05:15+00:00)
Title: Permit external command to process the pandoc before converting

This change enables a filter: setting in config.yaml that contains a shell command. If present, the Pandoc AST (in JSON format) will be piped through that command before converting to an output format.

This will enable any of the sorts of transformations presented on the [scripting with pandoc](http://johnmacfarlane.net/pandoc/scripting.html) page.

In the demo/ site, I used it to include a code block from an external file.