GNU bug report logs - #9364
23.3.50; inconsistent behavior of M-s o in regex isearch

Previous Next

To add a comment to this bug, you must first unarchive it, by sending
a message to control AT debbugs.gnu.org, with unarchive 9364 in the body.
You can then email your comments to 9364 AT debbugs.gnu.org in the normal way.

Toggle the display of automated, internal messages from the tracker.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Eric Hanchrow <eric.hanchrow <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 23.3.50; inconsistent behavior of M-s o in regex isearch
Date: Wed, 24 Aug 2011 13:26:36 -0700

I started emacs like this: /usr/local/src/emacs23/src/emacs -Q

I then typed C-h r to being up the Emacs manual.

I then typed M-C-s ^ SPC permission.  This did what I expected: it moved
point forward until it was just after the word "Permission" on line 23.

I then typed M-s o. I saw a message in the echo area:

        Searched 1 buffer; no matches for `^ permission'

This is not what I expected: I instead expected to see an "*Occur*"
buffer appear, showing something like this:

    1 match for "^ permission" in buffer: *info*
         23:     Permission is granted to copy, distribute and/or modify this

Now, if I repeat my little repro scenario above, but search instead for
^ SPC + permission -- i.e., if I add a + character after my SPC --
everything works as I expect.

In GNU Emacs 23.3.50.1 (x86_64-unknown-linux-gnu)
 of 2011-08-12 on rampage.sea
Windowing system distributor `The X.Org Foundation', version 11.0.10402000
configured using `configure  '--with-x-toolkit=no''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: C
  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: en_US.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Info

Minor modes in effect:
  tooltip-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-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
C-h i C-v C-v C-v M-< C-h r C-u C-u C-n C-u C-n C-f
C-f C-f M-< C-M-s ^ SPC p e r m i s s i o n C-s M-s
o C-a C-h r d C-x k <return> C-h r C-v M-v C-l M-<
M-x r e p o e <backspace> r t - e m <tab> <return>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Composing main Info directory...done
Mark set [2 times]
Searched 1 buffer; no matches for `^ permission'
Mark saved where search started
Mark set

Load-path shadows:
None found.

Features:
(shadow sort mail-extr message sendmail regexp-opt ecomplete rfc822 mml
mml-sec password-cache mm-decode mm-bodies mm-encode mailcap mail-parse
rfc2231 rfc2047 rfc2045 qp ietf-drums mailabbrev nnheader gnus-util
netrc time-date mm-util mail-prsvr gmm-utils wid-edit mailheader canlock
sha1 hex-util hashcash mail-utils emacsbug multi-isearch info easymenu
tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd
font-setting tool-bar dnd fontset image fringe lisp-mode register page
menu-bar rfn-eshadow timer select scroll-bar mldrag 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 loaddefs button
minibuffer faces cus-face files text-properties overlay md5 base64
format env code-pages mule custom widget hashtable-print-readable
backquote make-network-process dbusbind system-font-setting
font-render-setting x multi-tty emacs)

Message #8 received at 9364 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: Eric Hanchrow <eric.hanchrow <at> gmail.com>
Cc: 9364 <at> debbugs.gnu.org
Subject: Re: bug#9364: 23.3.50; inconsistent behavior of M-s o in regex isearch
Date: Wed, 24 Aug 2011 16:35:04 -0400

Eric Hanchrow wrote:

> I then typed M-C-s ^ SPC permission.  This did what I expected: it moved
> point forward until it was just after the word "Permission" on line 23.
>
> I then typed M-s o. I saw a message in the echo area:
>
>         Searched 1 buffer; no matches for `^ permission'

isearch-forward-regexp says:

  In regexp incremental searches, a space or spaces normally matches
  any whitespace (the variable `search-whitespace-regexp' controls
  precisely what that means).

occur does not have this feature.

Message #11 received at 9364 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: Eric Hanchrow <eric.hanchrow <at> gmail.com>
Cc: 9364 <at> debbugs.gnu.org
Subject: Re: bug#9364: 23.3.50; inconsistent behavior of M-s o in regex isearch
Date: Wed, 24 Aug 2011 16:43:22 -0400

I guess for consistency isearch-occur should bind search-spaces-regexp
to search-whitespace-regexp.

Message #16 received at 9364-done <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> jurta.org>
To: Glenn Morris <rgm <at> gnu.org>
Cc: 9364-done <at> debbugs.gnu.org, Eric Hanchrow <eric.hanchrow <at> gmail.com>
Subject: Re: bug#9364: 23.3.50; inconsistent behavior of M-s o in regex isearch
Date: Thu, 25 Aug 2011 23:49:02 +0300

> I guess for consistency isearch-occur should bind search-spaces-regexp
> to search-whitespace-regexp.

Thank you for the suggestion.  I tested it and installed the fix.

Message #23 received at 9364 <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> jurta.org>
To: 9364 <at> debbugs.gnu.org
Subject: Re: bug#9364: 23.3.50; inconsistent behavior of M-s o in regex isearch
Date: Mon, 24 Oct 2011 08:57:56 +0300

It occurred to me that `isearch-occur' should bind `search-spaces-regexp'
to `search-whitespace-regexp' only when `isearch-regexp' is non-nil
because regexp-based `occur' should output the same matches
as in non-regexp isearch that doesn't use `search-spaces-regexp'.
So now I fixed this accordingly.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.