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pcre_study

X-seq: zsh-workers 15229
From: "Bart Schaefer" <schaefer@xxxxxxxxxxxxxxxxxxxxxxx>
To: zsh-workers@xxxxxxxxxx
Subject: pcre_study
Date: Tue, 3 Jul 2001 16:26:28 +0000
Mailing-list: contact zsh-workers-help@xxxxxxxxxx; run by ezmlm

Does `study' mean something completely different in PCRE than in Perl?

In Perl, `study' means to examine the *string that is to be searched* to
increase the speed of matching.  It has no effect at all on the pattern
that was compiled.  Hence in Perl, a `study' at the point where zpgrep
calls `pcre_study' would be completely useless as no input has been read
yet.  (And calling `study' on every line would be a waste anyway.)

I really don't know, having never used PCRE except as a side-effect of PHP,
but if we're going to include this then the doc (and the zpgrep example)
ought to be correct.

-- 
Bart Schaefer                                 Brass Lantern Enterprises
http://www.well.com/user/barts              http://www.brasslantern.com

Zsh: http://www.zsh.org | PHPerl Project: http://phperl.sourceforge.net

Follow-Ups:
- Re: pcre_study
  - From: Clint Adams

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