From: Herbert Euler <herberteuler@hotmail.com>
To: St/n_P/rm/n <stan@sandpframing.com>, <emacs-devel@gnu.org>
Subject: RE: regexp-quote missing escapes in grouping constructs - Bug?
Date: Fri, 13 Jun 2008 14:20:22 +0800 [thread overview]
Message-ID: <BAY143-W14AAC08CBDAA5013C4EBD9DAAC0@phx.gbl> (raw)
In-Reply-To: <d2afcfda0806121639g2d7a9762kf84edc9372645dd1@mail.gmail.com>
> (regexp-quote "[0-9]\{2,4\}\(-\|/\)[0-9]?+\(-\|/\)[0-9]\{2,4\}")
>
> ---> "\\[0-9]{2,4}(-|/)\\[0-9]\\?\\+(-|/)\\[0-9]{2,4}"
>
> Am I misunderstanding something?
> Shouldn't passing that string to regexp-quote give back something more
> like this:
>
> ---> "[0-9]\\{2,4\\}\\(-\\|/\\)[0-9]?+(-\\|/)[0-9]\\{2,4\\}"
I think this is because `regexp-quote' sees the string being processed
by the Lisp reader, i.e. "\{" ==> "{" in the internal representation,
while "\\{" ==> "\{":
ELISP> (regexp-quote "[0-9]\{2,4\}")
"\\[0-9]{2,4}"
ELISP> (regexp-quote "[0-9]\\{2,4\\}")
"\\[0-9]\\\\{2,4\\\\}"
ELISP>
Regards,
Guanpeng Xu
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prev parent reply other threads:[~2008-06-13 6:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-12 23:39 regexp-quote missing escapes in grouping constructs - Bug? St/n_P/rm/n
2008-06-13 6:17 ` Miles Bader
2008-06-13 17:36 ` MON KEY
2008-06-13 22:21 ` Stefan Monnier
2008-06-14 4:16 ` tomas
2008-06-13 6:20 ` Herbert Euler [this message]
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