From: Teemu Likonen <tlikonen@iki.fi>
To: help-gnu-emacs@gnu.org
Subject: Re: regular expression
Date: Mon, 30 Jun 2014 23:36:22 +0300 [thread overview]
Message-ID: <874mz2dtix.fsf@mithlond.arda> (raw)
In-Reply-To: <87r4269mwa.fsf@debian.uxu> (Emanuel Berg's message of "Mon, 30 Jun 2014 22:13:09 +0200")
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Emanuel Berg [2014-06-30 22:13:09 +02:00] wrote:
> Emanuel Berg <embe8573@student.uu.se> writes:
>> Note that [A-Z] matches [a-z] as well (the lowercase equivalent)
>> unless the variable case-fold-search is nil.
>
> It seems this isn't so. Well, all the better as it is less confusing.
> [A-Za-z] is all the a-z chars in both upper- and lowercase, and [A-Z]
> isn't [a-z].
It's very likely that when one writes [A-Za-z] he actually means "match
any letter". So it's often better to write [[:alpha:]] instead since it
also matches other letters than A-Z. Sometimes a good option is \w which
matches word-constituent characters as defined in the current syntax
table.
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next prev parent reply other threads:[~2014-06-30 20:36 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <d5b8df44-60fd-4b8f-83d1-cb7d04b2a7b4@googlegroups.com>
2014-06-30 20:04 ` regular expression Emanuel Berg
2014-06-30 20:13 ` Emanuel Berg
2014-06-30 20:36 ` Teemu Likonen [this message]
[not found] ` <mailman.4605.1404160609.1147.help-gnu-emacs@gnu.org>
2014-06-30 20:52 ` Emanuel Berg
2014-06-30 21:04 ` Teemu Likonen
[not found] ` <mailman.4609.1404162300.1147.help-gnu-emacs@gnu.org>
2014-06-30 21:11 ` Emanuel Berg
2014-07-02 23:14 Tak Kunihiro
-- strict thread matches above, loose matches on Subject: below --
2014-07-02 13:10 Tak Kunihiro
2014-07-02 13:43 ` Stefan Monnier
[not found] <mailman.4622.1404173952.1147.help-gnu-emacs@gnu.org>
2014-07-02 8:33 ` Emanuel Berg
2014-06-30 23:14 Tak Kunihiro
2010-01-25 11:00 Burkhard Schultheis
2010-01-25 12:35 ` Nuno J. Silva
2010-01-25 12:53 ` Helmut Eller
2010-01-26 19:46 ` Nuno J. Silva
2010-01-25 16:34 ` Burkhard Schultheis
2010-01-25 18:12 ` Stefan Monnier
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