Markdown

[jyee]

I'm trying to create a markdown filter for civi and having a nightmare of a time figuring out where to hook into the system.

I think my general problem is that civi uses wysiwyg (or just a textarea) to generate html on the input... then nothing happens on the output (html straight to the browser).  For markdown, it's the opposite: users write markdown that needs no filtering on the input, then markdown needs to generate html on the output.  Any thoughts on the best way to pass all civicrm output through markdown to create html?

p.s. i tried a civicrm_buildForm() looping through $form->_values and running markdown against those values, but they didn't seem to change anything (e.g. $form->_values['intro_text'] on a contribution page)