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Cc: Andrej <andrej.groups@gmail.com>, pgsql-sql <pgsql-sql@postgresql.org>
Subject: Re: Extending Regular Expression bounds limit of 255.
From: alvherre <alvherre@commandprompt.com>
To: Brent DeSpain <bd.postgres@gmail.com>
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Date: Fri, 28 May 2010 11:14:44 -0400
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Excerpts from Brent DeSpain's message of jue may 27 18:55:55 -0400 2010:
> It looks like most of our tools are using the Perl version of regular
> expressions with an upper limit of a bound being 32766.  Is there any way to
> change this in PG?  Or can I change from POSIX to Perl?

See regcomp.c; you'll have to recompile.  The interesting constant is
DUPMAX (defined in regguts.h as per POSIX), but note that there's
arithmetic in repeat() with those values.  I wouldn't recommend doing
any of this unless you have time to figure out whether the algorithms
are efficient for larger values though.

-- 
Álvaro Herrera <alvherre@commandprompt.com>
The PostgreSQL Company - Command Prompt, Inc.
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