| From: | hubert depesz lubaczewski <depesz(at)depesz(dot)com> |
|---|---|
| To: | Alban Hertroys <haramrae(at)gmail(dot)com> |
| Cc: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Why this regexp matches?! |
| Date: | 2012-02-04 19:58:38 |
| Message-ID: | 20120204195837.GA3006@depesz.com |
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| Lists: | pgsql-general |
On Sat, Feb 04, 2012 at 07:31:25PM +0100, Alban Hertroys wrote:
> > I know that Pg regexps are limited, but even grep's regexps match this
>
> Limited? They're really not. According to the docs they are beyond
> POSIX compliant, even including several extensions as they appear in,
> among others, Perl. That said, the docs do mention a known limitation
> with braces and forward-references - maybe this is related.
Limited - because (for example) Pg regexps, are the only regexp flavour
that I know that you can't have both greedy and non-greedy operators in
the same expression.
depesz
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