GNU bug report logs -
#29254
24.4; Unexpected case-folding in occur when case-fold-search set
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Reported by: Fran Burstall <fran.burstall <at> gmail.com>
Date: Fri, 10 Nov 2017 20:11:02 UTC
Severity: minor
Found in version 24.4
Done: Eli Zaretskii <eliz <at> gnu.org>
Bug is archived. No further changes may be made.
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[Message part 1 (text/plain, inline)]
Your bug report
#29254: 24.4; Unexpected case-folding in occur when case-fold-search set
which was filed against the emacs package, has been closed.
The explanation is attached below, along with your original report.
If you require more details, please reply to 29254 <at> debbugs.gnu.org.
--
29254: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=29254
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems
[Message part 2 (message/rfc822, inline)]
> From: Fran Burstall <fran.burstall <at> gmail.com>
> Date: Fri, 10 Nov 2017 20:10:35 +0000
>
>
> >From emacs -Q:
>
> Put the following text in a buffer:
>
> MA
> ma
> MA
> ma
>
> Do M-x set-variable to set case-fold-search to t (buffer-locally).
>
> Do M-s o to call occur with regexp "MA".
>
> I expect: 2 lines in the *Occur* buffer matching the MA lines
>
> I get: 4 lines matching all occurrences of the string
> regardless of case.
Thanks, fixed on the emacs-26 release branch.
[Message part 3 (message/rfc822, inline)]
From emacs -Q:
Put the following text in a buffer:
MA
ma
MA
ma
Do M-x set-variable to set case-fold-search to t (buffer-locally).
Do M-s o to call occur with regexp "MA".
I expect: 2 lines in the *Occur* buffer matching the MA lines
I get: 4 lines matching all occurrences of the string
regardless of case.
I get the expected (documented) behaviour if I do not
explicitly set case-fold-search to t.
Commentary: the problem is in occur-engine. This correctly sets
case-fold-search to nil at the start of the function but that seems to get
overridden by the time the actual search happens inside the
with-current-buffer clause. Some weird scope thing with
buffer-local variables?
---Fran
In GNU Emacs 24.4.1 (x86_64-pc-linux-gnu, GTK+ Version 3.14.5)
of 2017-09-12 on hullmann, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.11604000
System Description: LMDE 2 Betsy
Configured using:
`configure --build x86_64-linux-gnu --prefix=/usr
--sharedstatedir=/var/lib --libexecdir=/usr/lib
--localstatedir=/var/lib --infodir=/usr/share/info
--mandir=/usr/share/man --with-pop=yes
--enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.4/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.4/site-lisp:/usr/share/emacs/site-lisp
--build x86_64-linux-gnu --prefix=/usr --sharedstatedir=/var/lib
--libexecdir=/usr/lib --localstatedir=/var/lib
--infodir=/usr/share/info --mandir=/usr/share/man --with-pop=yes
--enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.4/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.4/site-lisp:/usr/share/emacs/site-lisp
--with-x=yes --with-x-toolkit=gtk3 --with-toolkit-scroll-bars
'CFLAGS=-g -O2 -fstack-protector-strong -Wformat
-Werror=format-security -Wall' CPPFLAGS=-D_FORTIFY_SOURCE=2
LDFLAGS=-Wl,-z,relro'
Important settings:
value of $LANG: en_GB.utf8
locale-coding-system: utf-8-unix
Major mode: Lisp Interaction
Minor modes in effect:
tooltip-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t
Recent input:
C-h v c a s e - f o l d - s e <tab> <return> M A <return>
m a <return> M A <return> m a <return> M-s o M A <return>
M-x s e t - v a r i a b l e <return> c a s e - f o
l d - s e a r <tab> <return> t <return> M-s o <return>
M-x r e p o r t <tab> <return>
Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Type C-x 1 to delete the help window.
Searched 1 buffer; 2 matches for `MA'
Searched 1 buffer; 4 matches for `MA'
Load-path shadows:
None found.
Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev
gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util
mail-prsvr mail-utils cus-edit wid-edit cl-loaddefs cl-lib cus-start
cus-load help-mode easymenu help-fns time-date tooltip electric uniquify
ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar dnd
fontset image regexp-opt fringe tabulated-list newcomment lisp-mode
prog-mode register page menu-bar rfn-eshadow timer select scroll-bar
mouse jit-lock font-lock syntax facemenu font-core frame cham georgian
utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean
japanese hebrew greek romanian slovak czech european ethiopic indian
cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev
minibuffer nadvice loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote make-network-process
dbusbind gfilenotify dynamic-setting system-font-setting
font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs)
Memory information:
((conses 16 91794 4676)
(symbols 48 19365 0)
(miscs 40 46 124)
(strings 32 13753 3607)
(string-bytes 1 373062)
(vectors 16 10107)
(vector-slots 8 393223 8222)
(floats 8 73 294)
(intervals 56 261 19)
(buffers 960 13)
(heap 1024 23656 1037))
To:
Subject:
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This bug report was last modified 7 years and 271 days ago.
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