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bug#3001: 23.0.92; doc for regexp construct (?:

From: Stefan Monnier
Subject: bug#3001: 23.0.92; doc for regexp construct (?:
Date: Wed, 15 Apr 2009 09:32:05 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.92 (gnu/linux)

> Emacs calls regexp groups that use the grouping construct "(?:" "shy
> groups".  I don't get the impression that that is a common term for
> this construct, outside Emacs.

IIRC I did not invent the term, instead I took it from Perl.  But I must
admit that I cannot find that term in "man perlre", so I'm not sure
where precisely I found it.  It's just the name had'd heard used to
describe this feature of Perl.  Maybe XEmacs's use of the term was an
influence as well.

> Googling "shy group" shows only Emacs hits.

Indeed, it does, yet
has "shy groups" in its chart.  Indeed googling « "shy groups" perl »
should more than 500 hits, whereas « "shy groups" emacs » shows less
than 200.


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