| From: | Teodor Sigaev <teodor(at)sigaev(dot)ru> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: message string fixes |
| Date: | 2008-01-20 21:33:30 |
| Message-ID: | 4793BE2A.7050004@sigaev.ru |
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| Lists: | pgsql-hackers |
> Maybe the right phrase to use is "ispell regular expression". In any
> case we need to document what the limitations are compared to "regular"
> regular expressions (ahem). Do you know offhand what the rules are?
There is a fallback to regex if expression isn't supported by regis (see call
of RS_isRegis() in spell.c).
Regis supports only matches as is, range of characters ( [abc] ), negotiation of
characters range ( [^abc] ) and can match begin or end of string. AFAIK, ispell
allows full regex but in practice I never seen something unsupported by regis.
--
Teodor Sigaev E-mail: teodor(at)sigaev(dot)ru
WWW: http://www.sigaev.ru/
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