From: harven <harven@free.fr>
To: help-gnu-emacs@gnu.org
Subject: Re: Help with regexp
Date: Wed, 02 Dec 2009 21:00:04 +0100 [thread overview]
Message-ID: <m2skbt6ta3.fsf@free.fr> (raw)
In-Reply-To: mailman.12039.1259774199.2239.help-gnu-emacs@gnu.org
Lennart Borgman <lennart.borgman@gmail.com> writes:
> On Wed, Dec 2, 2009 at 5:56 PM, Andreas Politz <politza@fh-trier.de> wrote:
>>
>> This reminds me of something else regexp related, though fixable.
>> Navigating point inside a regexp is very painfully.
>
> How does it hurt?
That way (quoting the emacs wiki, ParenthesisMatching).
"...It should be noted that the syntax-table makes all delimiters even.
That means that a beginning parenthesis ( may match a closing bracket ]
if the delimiters are not balanced as a whole.
Try C-M-f on the following expression:
( [ ) ]
Here is a short piece of Lisp code in which such a situation occurs:
(while
(re-search-forward "\\(\\[[0-9]\\),\\([0-9]\\]\\)" nil t)
(replace-match (concat (match-string 1) "." (match-string 2))))
This code replaces, e.g. [4,5] by [4.5]. Now, in the regular expression
between quotes " ", the first opening bracket [ matches the
first closing parenthesis ), whereas the last opening parenthesis (
matches the last closing bracket ]..."
next prev parent reply other threads:[~2009-12-02 20:00 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.11978.1259698881.2239.help-gnu-emacs@gnu.org>
2009-12-01 21:07 ` Help with regexp Pascal J. Bourguignon
2009-12-02 5:16 ` tomas
2009-12-02 6:03 ` Andreas Politz
2009-12-02 7:11 ` tomas
2009-12-02 8:14 ` Andreas Politz
2009-12-05 6:46 ` tomas
2009-12-02 7:18 ` suvayu ali
[not found] ` <mailman.12000.1259733814.2239.help-gnu-emacs@gnu.org>
2009-12-02 9:41 ` harven
2009-12-02 13:31 ` Andreas Politz
2009-12-02 16:05 ` Lennart Borgman
2009-12-02 16:56 ` Andreas Politz
2009-12-02 17:16 ` Lennart Borgman
[not found] ` <mailman.12039.1259774199.2239.help-gnu-emacs@gnu.org>
2009-12-02 20:00 ` harven [this message]
2009-12-02 17:01 ` Andreas Politz
[not found] ` <mailman.12029.1259760724.2239.help-gnu-emacs@gnu.org>
2009-12-02 14:16 ` Pascal J. Bourguignon
2009-12-02 6:36 ` Xavier Maillard
[not found] ` <mailman.12002.1259735748.2239.help-gnu-emacs@gnu.org>
2009-12-02 11:16 ` Pascal J. Bourguignon
[not found] ` <mailman.11999.1259731365.2239.help-gnu-emacs@gnu.org>
2009-12-03 3:48 ` Stefan Monnier
2009-12-02 15:37 ` Colin S. Miller
2009-12-01 20:21 Xavier Maillard
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