* bug#1299: lispref - searching.texi: Updating of looking-back arguments and return values in the example
@ 2008-11-02 19:06 Seweryn Kokot
2008-11-03 7:41 ` martin rudalics
0 siblings, 1 reply; 2+ messages in thread
From: Seweryn Kokot @ 2008-11-02 19:06 UTC (permalink / raw
To: bug-gnu-emacs
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Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:
See the diff attached. Note that I copied the explanation for greedy
argument of `looking-back' function. Because I'm not a native speaker
so probably this paragraph requires some rephrasing.
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diff -ud /home/sewi/emacs_cvs/emacs/doc/lispref/searching.texi /home/sewi/emacs_cvs/emacs/doc/lispref/searching_cor.texi
--- /home/sewi/zrodla/elisp_files/emacs_cvs/emacs/doc/lispref/searching.texi 2008-11-02 19:39:21.000000000 +0100
+++ /home/sewi/zrodla/elisp_files/emacs_cvs/emacs/doc/lispref/searching_cor.texi 2008-11-02 19:54:10.000000000 +0100
@@ -1094,7 +1094,7 @@
@end example
@end defun
-@defun looking-back regexp &optional limit
+@defun looking-back regexp &optional limit greedy
This function returns @code{t} if @var{regexp} matches text before
point, ending at point, and @code{nil} otherwise.
@@ -1105,6 +1105,10 @@
not to search before @var{limit}. In this case, the match that is
found must begin at or after @var{limit}.
+If greedy is non-nil, extend the match backwards as far as possible,
+stopping when a single additional previous character cannot be part
+of a match for regexp.
+
@example
@group
---------- Buffer: foo ----------
@@ -1408,7 +1412,7 @@
(re-search-forward "The \\(cat \\)")
(match-beginning 0)
(match-beginning 1))
- @result{} (9 9 13)
+ @result{} (17 9 13)
@end group
@group
Diff finished. Sun Nov 2 19:54:17 2008
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--
regards,
Seweryn Kokot
^ permalink raw reply [flat|nested] 2+ messages in thread
* bug#1299: lispref - searching.texi: Updating of looking-back arguments and return values in the example
2008-11-02 19:06 bug#1299: lispref - searching.texi: Updating of looking-back arguments and return values in the example Seweryn Kokot
@ 2008-11-03 7:41 ` martin rudalics
0 siblings, 0 replies; 2+ messages in thread
From: martin rudalics @ 2008-11-03 7:41 UTC (permalink / raw
To: 1299; +Cc: Seweryn Kokot
> See the diff attached. Note that I copied the explanation for greedy
> argument of `looking-back' function. Because I'm not a native speaker
> so probably this paragraph requires some rephrasing.
FWIW, it might not harm to also resolve the contradiction that REGEXP
can match _before_ LIMIT when GREEDY is non-nil (in the manual _and_ the
doc-string).
martin
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2008-11-02 19:06 bug#1299: lispref - searching.texi: Updating of looking-back arguments and return values in the example Seweryn Kokot
2008-11-03 7:41 ` martin rudalics
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