* How to highlight a large number of keywords?
@ 2010-07-23 7:54 joakim
2010-07-23 9:36 ` Stefan Monnier
0 siblings, 1 reply; 2+ messages in thread
From: joakim @ 2010-07-23 7:54 UTC (permalink / raw
To: Emacs development discussions
I'm trying to highlight a large number of keywords, 12000, with
font-lock. I've made a regexp using regexp-opt. This doesnt work, I dont
get any errors, but it seems the regexp is too large. What would be the
best way to highlight this large number of keywords in Emacs?
--
Joakim Verona
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: How to highlight a large number of keywords?
2010-07-23 7:54 How to highlight a large number of keywords? joakim
@ 2010-07-23 9:36 ` Stefan Monnier
0 siblings, 0 replies; 2+ messages in thread
From: Stefan Monnier @ 2010-07-23 9:36 UTC (permalink / raw
To: joakim; +Cc: Emacs development discussions
> I'm trying to highlight a large number of keywords, 12000, with
> font-lock. I've made a regexp using regexp-opt. This doesnt work, I dont
> get any errors, but it seems the regexp is too large.
If you don't get an error, it should work (else, it's just a bug).
Most likely, it's a bug (12000 keywords is very likely to overflow the
maximum size of a compiled regexp).
> What would be the best way to highlight this large number of keywords
> in Emacs?
Use a regexp that matches a superset of all those keywords, and then
extract the matched string and compare it to your set of 12000 keywords
to see if it's indeed one of them.
Stefan
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2010-07-23 7:54 How to highlight a large number of keywords? joakim
2010-07-23 9:36 ` Stefan Monnier
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