Re: How to do region syntax and avoid the effect of keywords.

On Friday, March 30, 2012 3:33:13 AM UTC-5, Yichao Zhou wrote:
> Hi, everyone.
>
> I want to let vim use syntax to fold c's function in K&R like.
>
> int main()
> {
> return 0;
> }
>
> So I write this:
>
> syntax region function start='^\h\+\_.\{-}\n\_^\ze{' end="}"
> contains=ALLBUT,cCurlyError,@cParenGroup,cErrInParen,cCppParen,cErrInBracket,cCppBracket,cCppString,@Spell
> fold keepend
>
> But I find that the "int" on the beginning of the file will stop this
> syntax rule become effective. If I change "int main" to "aint main",
> everything is OK. How to deal with this problem?

You might be able to work around it, by using a zero-width look-behind like \@<=. Possibly \zs will work as well.

I'm not sure if either will work, however. If two matches begin at the same place, keyword always takes precedence and there's no way around it beyond removing the keyword or making it contained. I'd expect \@<= to be more likely to work than \zs but may make the highlight much slower.

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