How do I make change to XXX-font-lock-keywords (typically using assoc plus setcdr) affect the fontification in XXX-mode? It doesn't suffice to simply change the variable to make the change have effect.
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The best way, as a normal user, to modify font-lock entries is to use the function font-lock-add-keywords and font-lock-remove-keywords. For example:
(font-lock-add-keywords c-mode
'(("\\<\\(FIXME\\):" 1
font-lock-warning-face t)))
Lindydancer
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Aha. I think I'll write a replace version myself then using the `add` and `remove`. Thx. – Nordlöw Nov 20 '12 at 13:24
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But Wikis can change (or sometimes even disappear). Plus, pages on EmacsWiki often address a more general topic, so it's nice when an answer on StackOverflow is a concise, stand-alone source of information. That said, external links can be a great addition to an answer for further reading. – Thomas Nov 20 '12 at 05:14
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@Thomas - reposting answers to obvious questions seems like a waste of everyone's time, especially if the answers are easily findable and more detailed than anyone would generally give in an SO post. i agree that not everything on EmacsWiki is as accessible, but this is font-lock 101. Not to mention that the answer posted here may become out of date, while EmacsWiki will be maintained over time. – jtahlborn Nov 20 '12 at 13:00