From: Eric Abrahamsen <eric@ericabrahamsen.net>
To: help-gnu-emacs@gnu.org
Subject: Re: Difference between \\w and [:word:]?
Date: Thu, 07 Jun 2018 14:35:42 -0700 [thread overview]
Message-ID: <87lgbqqnyp.fsf@ericabrahamsen.net> (raw)
In-Reply-To: 87y3fq5orf.fsf@gmail.com
Robert Pluim <rpluim@gmail.com> writes:
> Eric Abrahamsen <eric@ericabrahamsen.net> writes:
>
>> Can someone explain to me what's happening here? What's the difference
>> between \\w and [:word:], inside and outside of a bracket construction?
>>
>> (setq case-fold-search nil)
>> (string-match-p "[:word:]" "P") => nil
>> (string-match-p "[[:word:]]" "P") => 0
>> (string-match-p "\\w" "P") => 0
>> (string-match-p "[\\w]" "P") = nil
>
> Consider
>
> (string-match-p "[\\w]" "w") => ?
Oh, ha.
(string-match-p "[\\w]" "\\") => 0
And my other confusion (about character classes) was cleared up by
reading the manual more carefully.
Thanks,
Eric
next prev parent reply other threads:[~2018-06-07 21:35 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-07 19:18 Difference between \\w and [:word:]? Eric Abrahamsen
2018-06-07 20:24 ` Robert Pluim
2018-06-07 21:35 ` Eric Abrahamsen [this message]
[not found] <mailman.1434.1528399150.1292.help-gnu-emacs@gnu.org>
2018-06-07 23:00 ` Ben Bacarisse
2018-06-08 2:29 ` Eric Abrahamsen
2018-06-08 9:16 ` Robert Pluim
2018-06-08 9:24 ` Yuri Khan
2018-06-08 15:05 ` Eric Abrahamsen
2018-06-09 23:36 ` Stefan Monnier
2018-06-10 2:05 ` Eric Abrahamsen
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