Re: pg_ident.conf + regular expressions issue

From: Alexey Shishkin <alexey(dot)shishkin(dot)01(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>, "pgsql-bugs(at)lists(dot)postgresql(dot)org" <pgsql-bugs(at)lists(dot)postgresql(dot)org>
Subject: Re: pg_ident.conf + regular expressions issue
Date: 2024-10-21 20:58:12
Message-ID: CAL2LCjyXn0MHPg9=qKcSiv0vJ26vK2heh5B41KJd1Romp-Ed5w@mail.gmail.com
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OK, what we have is:

"(?c)^(.*SMOKEYBEAR)$" does not match "smokeybear"

and at the same time:

"(?i)^(.*SMOKEYBEAR)$" does match "smokeybear"

How the latter is possible ?

best regards,
Alexey Shishkin
alexey(dot)shishkin(dot)01(at)gmail(dot)com

On Mon, Oct 21, 2024 at 9:39 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:

> Alexey Shishkin <alexey(dot)shishkin(dot)01(at)gmail(dot)com> writes:
> > Let me rephrase my question about regular expressions + pg_ident.conf:
> > - why test09 is successful, while test10 fails ?
>
> I don't see why that one surprises you. "/(?c)^(.*SMOKEYBEAR)$" does
> not match "smokeybear".
>
> regards, tom lane
>

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