GNU bug report logs - #20532
25.0.50; void-variable cursor-sensor-inhibit

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Kaushal <kaushal.modi <at> gmail.com>
Subject: bug#20532: closed (Re: bug#20532: 25.0.50; void-variable
 cursor-sensor-inhibit)
Date: Wed, 27 May 2015 16:19:02 +0000

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Your bug report

#20532: 25.0.50; void-variable cursor-sensor-inhibit

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 20532 <at> debbugs.gnu.org.

-- 
20532: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=20532
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: 20532-done <at> debbugs.gnu.org
Subject: Re: bug#20532: 25.0.50; void-variable cursor-sensor-inhibit
Date: Wed, 27 May 2015 12:18:20 -0400

>> Can you think of any reason why you might have started your search in
>> one buffer and ended it in another?

> This will happen by design if you use isearch to search across multiple
> files (i.e. multi-isearch), such as a sequence of ChangeLog.N files.
> (There may be other variables than cursor-sensor-inhibit that are also
> mishandled in this situation.)

I installed the patch below which should fix this.


        Stefan


diff --git a/lisp/isearch.el b/lisp/isearch.el
index dc10502..5599ea5 100644
--- a/lisp/isearch.el
+++ b/lisp/isearch.el
@@ -932,12 +932,6 @@ convert the search string to a regexp used by regexp search functions."
   (add-hook 'post-command-hook 'isearch-post-command-hook)
   (add-hook 'mouse-leave-buffer-hook 'isearch-done)
   (add-hook 'kbd-macro-termination-hook 'isearch-done)
-  (make-local-variable 'cursor-sensor-inhibit)
-  (unless (boundp 'cursor-sensor-inhibit)
-    (setq cursor-sensor-inhibit nil))
-  ;; Suspend things like cursor-intangible during Isearch so we can search even
-  ;; within intangible text.
-  (push 'isearch cursor-sensor-inhibit)
 
   ;; isearch-mode can be made modal (in the sense of not returning to
   ;; the calling function until searching is completed) by entering
@@ -949,10 +943,23 @@ convert the search string to a regexp used by regexp search functions."
 
 
 ;; Some high level utilities.  Others below.
+(defvar isearch--current-buffer)
 
 (defun isearch-update ()
   "This is called after every isearch command to update the display.
 The last thing it does is to run `isearch-update-post-hook'."
+  (unless (eq (current-buffer) isearch--current-buffer)
+    (when isearch--current-buffer
+      (with-current-buffer isearch--current-buffer
+        (setq cursor-sensor-inhibit (delq 'isearch cursor-sensor-inhibit))))
+    (setq isearch--current-buffer (current-buffer))
+    (make-local-variable 'cursor-sensor-inhibit)
+    (unless (boundp 'cursor-sensor-inhibit)
+      (setq cursor-sensor-inhibit nil))
+    ;; Suspend things like cursor-intangible during Isearch so we can search
+    ;; even within intangible text.
+    (push 'isearch cursor-sensor-inhibit))
+
   (if (and (null unread-command-events)
 	   (null executing-kbd-macro))
       (progn
@@ -1026,7 +1033,9 @@ NOPUSH is t and EDIT is t."
   (remove-hook 'mouse-leave-buffer-hook 'isearch-done)
   (remove-hook 'kbd-macro-termination-hook 'isearch-done)
   (setq isearch-lazy-highlight-start nil)
-  (setq cursor-sensor-inhibit (delq 'isearch cursor-sensor-inhibit))
+  (with-current-buffer isearch--current-buffer
+    (setq isearch--current-buffer nil)
+    (setq cursor-sensor-inhibit (delq 'isearch cursor-sensor-inhibit)))
 
   ;; Called by all commands that terminate isearch-mode.
   ;; If NOPUSH is non-nil, we don't push the string on the search ring.

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From: Kaushal <kaushal.modi <at> gmail.com>
To: "bug-gnu-emacs <at> gnu.org" <bug-gnu-emacs <at> gnu.org>
Subject: 25.0.50; void-variable cursor-sensor-inhibit
Date: Fri, 08 May 2015 16:46:50 +0000

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Hi,

Lately, I have been facing this issue in the emacs built from master
branch. I haven't yet seen this error occur on emacs 24.4.

I see it happen now and then and haven't been able to consistently
reproduce it but here is the backtrace. I have not been able to create this
error on "emacs -Q".

I get this error when I am trying to quit isearch. I don't know if this
happens when I try to quit after I tried to search for a term that failed
to be found in the buffer or when I try to quit after a successful search
hit.

But once this started happening, repeated C-g hits keep on throwing this
error and I can't quit isearch.

Then the only way is to restart emacs.

Debugger entered--Lisp error: (void-variable cursor-sensor-inhibit)
  isearch-done(t)
  isearch-cancel()
  isearch-abort()
  funcall-interactively(isearch-abort)
  #<subr call-interactively>(isearch-abort nil nil)
  ad-Advice-call-interactively(#<subr call-interactively> isearch-abort nil
nil)
  apply(ad-Advice-call-interactively #<subr call-interactively>
(isearch-abort nil nil))
  call-interactively(isearch-abort nil nil)
  command-execute(isearch-abort)


In GNU Emacs 25.0.50.2 (x86_64-unknown-linux-gnu, GTK+ Version 2.10.4)
 of 2015-05-05 on ...
Windowing system distributor `The X.Org Foundation', version 11.0.60900000
System Description: Red Hat Enterprise Linux Client release 5.10 (Tikanga)

Configured using:
 `configure --prefix=/home/kmodi/usr_local/apps/emacs/master
 CPPFLAGS=-fgnu89-inline'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE LIBOTF XFT ZLIB

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Minor modes in effect:
  global-auto-complete-mode: t
  minibuffer-line-mode: t
  guide-key-mode: t
  desktop-save-mode: t
  pdf-occur-global-minor-mode: t
  global-anzu-mode: t
  anzu-mode: t
  recentf-mode: t
  winner-mode: t
  global-undo-tree-mode: t
  undo-tree-mode: t
  projectile-global-mode: t
  projectile-mode: t
  global-page-break-lines-mode: t
  keyfreq-autosave-mode: t
  keyfreq-mode: t
  diff-auto-refine-mode: t
  ido-ubiquitous-mode: t
  ido-vertical-mode: t
  flx-ido-mode: t
  global-hungry-delete-mode: t
  hungry-delete-mode: t
  volatile-highlights-mode: t
  global-hi-lock-mode: t
  hi-lock-mode: t
  global-hardcore-mode: t
  hardcore-mode: t
  drag-stuff-global-mode: t
  drag-stuff-mode: t
  ido-everywhere: t
  ace-window-display-mode: t
  global-adaptive-wrap-prefix-mode: t
  adaptive-wrap-prefix-mode: t
  display-time-mode: t
  popwin-mode: t
  which-function-mode: t
  shell-dirtrack-mode: t
  global-modi-mode: t
  modi-mode: t
  override-global-mode: t
  save-place-mode: t
  show-paren-mode: t
  delete-selection-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  buffer-read-only: t
  column-number-mode: t
  line-number-mode: t

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