From: Vinicius Jose Latorre <viniciusjl@ig.com.br>
To: "GNU Emacs (devel)" <emacs-devel@gnu.org>
Subject: Possible problem with looking-back function
Date: Wed, 18 Aug 2010 22:15:25 -0300 [thread overview]
Message-ID: <4C6C85AD.1010500@ig.com.br> (raw)
Hi,
I'm not sure if there is a problem with looking-back function in Emacs 24.
Let me explain the problem.
Suppose the buffer content is:
| 1| .\n
| 2| \n
| 3| \ \ \ \n
| 7| \t\n
| 9| \n
|10| \n
|11| :
Where:
. represents the point position
\n represents the end of line
\ represents a space character
\t represents a tab character
: represents the end of buffer
The numbers at first column indicates the point position at beginning of
line.
Ok, executing the following code:
(progn
(looking-at "^\\([ \t\n]+\\)")
(match-end 1))
It returns 11.
Now executing:
(progn
(goto-char 11) ; go to end of buffer
(looking-back "^\\([ \t\n]+\\)" 1 t)
(match-beginning 1))
It returns 9.
Shouldn't it return 1?
next reply other threads:[~2010-08-19 1:15 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-19 1:15 Vinicius Jose Latorre [this message]
2010-08-19 2:43 ` Possible problem with looking-back function Davis Herring
2010-08-19 6:09 ` Andreas Röhler
2010-08-19 8:01 ` Stefan Monnier
2010-08-19 9:02 ` Stephen J. Turnbull
2010-08-19 9:32 ` Andreas Röhler
2010-08-20 2:11 ` Vinicius Jose Latorre
2010-08-20 13:07 ` Stefan Monnier
2010-08-21 0:08 ` Vinicius Jose Latorre
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