* regexp does not work as documented
@ 2008-05-06 1:30 Bruno Haible
2008-05-06 14:15 ` Johan Bockgård
2015-12-29 17:48 ` bug#192: " Bruno Haible
0 siblings, 2 replies; 3+ messages in thread
From: Bruno Haible @ 2008-05-06 1:30 UTC (permalink / raw
To: bug-gnu-emacs
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The regular expression (as an Emacs string)
"^msgstr\\(\\[[0-9]\\]\\)?.*\n\\(\".*\n\\)*"
is supposed to search for a line starting with "msgstr" and an optional
digit inside brackets, followed by as many lines starting with a double-quote
as possible. The Emacs documentation says:
"The matcher processes a `*' construct by matching, immediately, as
many repetitions as can be found."
This is apparently not the case with the above regexp.
----------------------------------------------------------------------------
To reproduce:
$ emacs fr.po or $ emacs -nw fr.po
Leave the cursor at the beginning of the file.
M-x highlight-regexp
Regexp to highlight (enter this with Ctrl-Q Ctrl-J for each of the two
newlines):
^msgstr\(\[[0-9]\]\)?.*
\(".*
\)*
Highlight using face: hi-yellow
Then move around in the buffer and look which lines are highlighted.
In the first match already, only 5 out of 11 lines are highlighted. Then,
line 300 (in emacs 22) or line 335 (in emacs 21) are not highlighted either.
The attached screenshots were produced with emacs-22.2.1
(on i686-pc-linux-gnu) and with emacs-21.2.1 (on powerpc-apple-darwin7.9.0).
----------------------------------------------------------------------------
In GNU Emacs 22.2.1 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
of 2008-05-01 on linuix
Windowing system distributor `The XFree86 Project, Inc', version 11.0.40300001
configured using `configure '--prefix=/packages/gnu''
Important settings:
value of $LC_ALL: nil
value of $LC_COLLATE: POSIX
value of $LC_CTYPE: nil
value of $LC_MESSAGES: nil
value of $LC_MONETARY: nil
value of $LC_NUMERIC: nil
value of $LC_TIME: nil
value of $LANG: de_DE.UTF-8
locale-coding-system: utf-8
default-enable-multibyte-characters: t
Major mode: Lisp Interaction
Minor modes in effect:
tooltip-mode: t
tool-bar-mode: t
mouse-wheel-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
unify-8859-on-encoding-mode: t
utf-translate-cjk-mode: t
auto-compression-mode: t
line-number-mode: t
Recent input:
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <menu-bar> <help-menu> <send-emacs-bug-report>
Recent messages:
("emacs")
Loading cl-indent...done
Loading derived...done
For information about GNU Emacs and the GNU system, type C-h C-a.
Loading emacsbug...
Loading regexp-opt...done
Loading emacsbug...done
PS: Where is the bug tracker? I don't see it at https://savannah.gnu.org/projects/emacs
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2008-05-06 1:30 regexp does not work as documented Bruno Haible
2008-05-06 14:15 ` Johan Bockgård
2015-12-29 17:48 ` bug#192: " Bruno Haible
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