A feature in http://rubyforge.org/projects/minirubywiki/
Some Wikis have only primitive markup, like ' ' for italics.
Some have too much markup.
MRW passes this question thru to its users:
Edit that page to add any kind of tag your situation needs. New style tags "engage" in clear text, not inside the < > HTML markers. Tags may replace text, and may bracket either or both ends of a text extent, which may contain < > HTML tags.
Note that clever WikiZens use the page to test each of its own tags.
Another sick ability - turning processed text >back< into simple HTML tags:
[/<br>/, '<br>']
-- PhlIp
Every line in the WikiStyleSheet (see example above) which begins with ==> [ is a search-replace pair. The Wiki will execute the expression on each line (in order), and pass the result thru to HTML unprocessed.
See GraphWiki, WikiNerveCenter