138591Re: regex variable
- Jul 19, 2013
On Jul 19, 2013 5:49 PM, "BPJ" <bpj@...> wrote:
> 2013-07-19 09:59, shawn wilson skrev:
>> On Jul 18, 2013 11:48 PM, "John Beckett" <johnb.beckett@...> wrote:
>>> shawn wilson wrote:
>>>> This is probably a feature request but I really do hate the
>>>> regex engine and would love to swap it out. Is there / can
>>>> there be a compile time option to use a different engine?
>>> No (I assume you want different regex syntax, probably PCRE).
>> libpcre would be fine, yes. Or the library that Ruby uses - either way.
>> Yeah, it looks like sed's syntax. If I'm used to writing things one way
>> (say in code) and then hit '/' to do a similar thing inside my editor,
>> switching mindset constantly makes me loose my thought (generally what
>> happens) or make stupid errors like earlier in this thread.
> I feel the same sometimes, as I code Perl in Vim on a daily
> basis, but Vim's (old) regex engine/syntax actually allows useful
> things which are impossible or hard inn Perl, not only the other
> way around. And I can always filter through a perl oneliner if I
> want to use perl's regex engine. Can't you do the same with Ruby?
> Vim regexes come closer to Perl's if you use of \v and so that
> ought to bring you closer to PCRE too unless the "PC" is now only
> an historical leftover (I haven't looked at the specs in a long
> time, but hey) The only thing I regularly miss in Vim regexes is
> \Q...\E. \V...\v comes close, although you still have to escape
> your backslashes under \V.
> So I guess I should file a feature request for support of \Q,
> although someone probably has already...
To have this a way to embed variable is needed in first place. Otherwise you would need to escape \E which can only be done with a more complex (compared to escape()) substitute() call or a new function. AFAIR embedding variables was indeed requested.
The thing I constantly miss in vim RE engine is unicode and locales support.
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