Subject: bug#15261: 24.2; Cursor not visible while moving point in transient mark mode

From: "RICHARD MUNITZ (BLOOMBERG/ 731 LEXIN)" <[email-masked]>
Date: Tue, 3 Sep 2013 18:28:14 -0000

--text follows this line--
This bug report will be sent to the Bug-GNU-Emacs mailing list
and the GNU bug tracker at debbugs.gnu.org.  Please check that
the From: line contains a valid email address.  After a delay of up
to one day, you should receive an acknowledgement at that address.

Please write in English if possible, as the Emacs maintainers
usually do not have translators for other languages.

Please describe exactly what actions triggered the bug, and
the precise symptoms of the bug.  If you can, give a recipe
starting from `emacs -Q':

The basic problem is that if I set mark and then quickly move the cursor
around in any direction with a reasonable rapid sequence of cursor movement keystrokes,
the cursor becomes invisible and there is no highlighting until I stop
typing for a moment. So there is no visual feedback on where point is and it
greatly slows down movement to the desired destination.  It seems that I need to pause about 1/2
second between keystrokes for the cursor and highlighting to be rendered on
the screen.
This is reproducible:
Start 'emacs -Q';
C-SPC (to set mark at the end of the buffer)
Then in somewhat rapid succession, perhaps 1/4 second apart, type C-p C-p C-p C-p
There is no evidence of movement while the C-p's are being typed that point is
moving up the screen until you stop typing and point suddenly jumps 3
lines up and it shows all lines highlighted.

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
For information about debugging Emacs, please read the file
/opt/swt/install/emacs-24.2/share/emacs/24.2/etc/DEBUG.

In GNU Emacs 24.2.1 (sparc-sun-solaris2.10, GTK+ Version 2.16.5)
 of 2012-10-12 on nysbldo5
Windowing system distributor `Hummingbird - Open Text', version 11.0.13830
Configured using:
 `configure '--prefix=/opt/swt/install/emacs-24.2' 'CC=gcc -m32
 -D_FILE_OFFSET_BITS=64' 'CFLAGS=-I. -I/opt/swt/include'
 'LDFLAGS=-L/opt/swt/lib/sparcv9 -R/opt/swt/lib/sparcv9
 -Wl,-R/opt/swt/lib/sparcv9 -L/opt/swt/lib -R/opt/swt/lib
 -Wl,-R/opt/swt/lib''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  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: nil
  value of $XMODIFIERS: nil
  locale-coding-system: nil
  default enable-multibyte-characters: t

Major mode: Fundamental

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
  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-SPC C-p C-p C-p C-p C-p <escape> > C-SPC C-p C-p 
C-p C-p <escape> > C-SPC C-p C-p C-p C-p C-n C-n C-n 
C-n C-p C-p C-p C-p <down-mouse-1> <mouse-1> C-p C-p 
C-p C-p C-n C-n C-n C-n C-SPC C-p C-p C-p C-p <help-echo> 
<escape> > C-SPC <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> C-p C-p C-p <escape> > C-p 
C-p C-p C-p C-p <escape> > C-p C-p C-p C-p C-p C-p 
<escape> > <down-mouse-1> <mouse-1> <down-mouse-1> 
<mouse-1> C-p C-p C-p C-p C-n C-n C-n C-n C-SPC C-p 
C-p C-p C-p <help-echo> <down-mouse-1> <mouse-1> C-h 
C-a <help-echo> <help-echo> C-h a b u g <return> C-x 
1 C-h a <escape> C-g C-h <escape> C-h C-g C-g C-h C-a 
C-h C-b C-h b C-h a b u g SPC r e p o r t <return> 
<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:
For information about GNU Emacs and the GNU system, type C-h C-a.
Mark set
byte-code: Beginning of buffer
Mark activated [4 times]
byte-code: Beginning of buffer [3 times]
Mark activated
Type C-x 1 to remove help window.  
Quit [2 times]
Type C-x 1 to delete the help window, C-M-v to scroll help.
Type C-x 4 C-o RET to restore the other window.  

Load-path shadows:
None found.

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