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bug#20934: 24.5; Mouse pointer shape not updated over text when track-mo

From: Paul C
Subject: bug#20934: 24.5; Mouse pointer shape not updated over text when track-mouse enabled
Date: Tue, 30 Jun 2015 02:00:06 +0000

The mouse pointer shape does not change from an arrow to a bar when

hovering over text when in C++ or C major modes and gud-tooltips minor mode.


Only this combination of modes seems cause the problem. The mouse

shape is updated in other major modes, ie fundamental etc.


To repeat:


emacs -Q

M-x c++-mode

M-x gud-tooltip-mode


Move the mouse over the default scratch pad text, and below the text and

the mouse point will remain unchanged no matter the position in the

window. By default, the mouse cursor will change to a bar over the text

and an arrow when away from text.


It seems to be related to the enabling the track-mouse variable to

enable mouse events for gud-tooltip mode. This issue can also be repeated by

setting track-mouse to t in any mode:


emacs -Q

M-: (setq track-mouse t)


I was hoping to implement a semantic tooltip mode for when the mouse

hovers over a known keyword, so I was using gud-tooltip-mode for this in

standard editing modes.


Tested on Win32 native. Prebuilt install.

Not tested on Linux.





In GNU Emacs 24.5.1 (i686-pc-mingw32)

 of 2015-04-11 on LEG570

Windowing system distributor `Microsoft Corp.', version 6.1.7601

Configured using:

 `configure --prefix=/c/usr --host=i686-pc-mingw32'


Important settings:

  value of $LANG: en_US.UTF-8

  locale-coding-system: cp1252


Major mode: C++/l


Minor modes in effect:

  gud-tooltip-mode: t

  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

  abbrev-mode: t


Recent messages:

For information about GNU Emacs and the GNU system, type C-h C-a.

Gud-Tooltip mode enabled

scroll-up-command: End of buffer


Load-path shadows:

None found.



(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

help-fns mail-prsvr mail-utils cus-start cus-load gud easy-mmode comint

ansi-color ring cc-langs cl-loaddefs cl-lib cc-mode cc-fonts easymenu

cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs

time-date tooltip electric uniquify ediff-hook vc-hooks lisp-float-type

mwheel dos-w32 ls-lisp w32-common-fns disp-table w32-win w32-vars

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

w32notify w32 multi-tty emacs)


Memory information:

((conses 8 117701 4256)

 (symbols 32 21442 0)

 (miscs 32 44 149)

 (strings 16 21679 3899)

 (string-bytes 1 672309)

 (vectors 8 12854)

 (vector-slots 4 421791 2686)

 (floats 8 59 260)

 (intervals 28 218 38)

 (buffers 508 11))

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