Hey,
I'm doing some syntax highlighting in lisp for emacs. It works good so far, but I have a few questions... What's the expression for a . (just a period). . obviously matches any character, but I can't figure out how to match a period. I've tried \. and \\.
Any help is appreciated. Also, is there a way to match a string, but highlight only part of it.
For instance. Say the string:
doo da
I want to match the entire string, ex. "doo da", but only highligh "da". If "da" appears else where, ex. asdf da, I don't want it to be highlighted.

Ok, got the second question I asked... You use parenthesis for sub expressions, then after the expression, use a number to indicate the "subexpresion" (expressions in parenthesis) to highlight. ex.
'("doo\\(da\\)" 1 font-lock-warning-face)

nvm, im stupid, a period is just \.
I was just matching it with a \\< infront, which matches the beginning of word, and a word can never start with a period, so it was an impossible expression.