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bug#4271: 23.1; pop-to-buffer -vs- multiple terminals


From: Tom Tromey
Subject: bug#4271: 23.1; pop-to-buffer -vs- multiple terminals
Date: Wed, 26 Aug 2009 20:37:44 -0600

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the address@hidden mailing list,
and to the gnu.emacs.bug news group.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:


I have a long-running emacs on one machine.  It has a couple of frames
on the local X display.

I logged into that machine remotely and ran 'emacsclient -t' on a tty.

When I ran vc-diff on this terminal, I was surprised that I was not
switched to the *vc-diff* buffer.  It turns out that *vc-diff* was in a
window on one of the X frames -- but not visible to me now, using the
tty.

I ran (pop-to-buffer "*vc-diff*") and this did not show the buffer.  I
think that this should ignore frames on other terminals when determining
whether a buffer is visible.


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'.
If you would like to further debug the crash, please read the file
/usr/share/emacs/23.1/etc/DEBUG for instructions.


In GNU Emacs 23.1.1 (i386-redhat-linux-gnu, GTK+ Version 2.16.5)
 of 2009-08-24 on x86-2.fedora.phx.redhat.com
Windowing system distributor `The X.Org Foundation', version 11.0.10601901
configured using `configure  '--build=i386-redhat-linux-gnu' 
'--host=i386-redhat-linux-gnu' '--target=i586-redhat-linux-gnu' 
'--program-prefix=' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin' 
'--sbindir=/usr/sbin' '--sysconfdir=/etc' '--datadir=/usr/share' 
'--includedir=/usr/include' '--libdir=/usr/lib' '--libexecdir=/usr/libexec' 
'--localstatedir=/var' '--sharedstatedir=/var/lib' '--mandir=/usr/share/man' 
'--infodir=/usr/share/info' '--with-dbus' '--with-gif' '--with-jpeg' 
'--with-png' '--with-rsvg' '--with-tiff' '--with-xft' '--with-xpm' 
'--with-x-toolkit=gtk' 'build_alias=i386-redhat-linux-gnu' 
'host_alias=i386-redhat-linux-gnu' 'target_alias=i586-redhat-linux-gnu' 
'CFLAGS=-DMAIL_USE_LOCKF -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 
-fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i586 
-mtune=generic -fasynchronous-unwind-tables''

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

Major mode: C/l

Minor modes in effect:
  shell-dirtrack-mode: t
  diff-auto-refine-mode: t
  auto-fill-function: tjt-c++-do-auto-fill
  erc-list-mode: t
  erc-menu-mode: t
  erc-autojoin-mode: t
  erc-ring-mode: t
  erc-pcomplete-mode: t
  erc-track-mode: t
  erc-track-minor-mode: t
  erc-match-mode: t
  erc-button-mode: t
  erc-fill-mode: t
  erc-stamp-mode: t
  erc-netsplit-mode: t
  erc-spelling-mode: t
  erc-truncate-mode: t
  flyspell-mode: t
  erc-status-mode: t
  erc-services-mode: t
  erc-networks-mode: t
  erc-irccontrols-mode: t
  erc-noncommands-mode: t
  erc-move-to-prompt-mode: t
  erc-readonly-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-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 input:
v C-l C-x v d ESC DEL RET C-x 1 = <switch-frame> C-f 
C-f = <switch-frame> = <switch-frame> = <switch-frame> 
= <switch-frame> = <switch-frame> = <switch-frame> 
C-x b * v c d DEL - d i f f TAB RET C-v C-v C-v ESC 
v C-l ESC v ESC v ESC v C-l C-v ESC < C-x C-f b u f 
f e r ESC b s r c / C-e . c RET ESC < C-s p t h r e 
a d . C-a C-l C-k C-k C-k C-x C-s C-x s C-x b RET C-x 
v = C-v ESC [ 2 1 ~ C-c b C-p C-b C-v C-l C-u C-n C-u 
C-n C-u C-n C-l C-u C-n C-u C-n C-l ESC [ 2 0 ~ C-x 
1 ESC [ 2 1 ~ C-c b C-x C-f b u f f e r . c RET C-x 
b * G TAB RET 1 g C-v C-v C-s p a t h c DEL c h C-a 
C-u C-n C-n C-n = ESC > SPC Q y SPC ESC > Q y SPC 5 
0 RET ESC > q s ESC v ESC v ESC v C-l C-u C-p C-p ESC 
g ESC g ESC g ESC g ESC g n n n ESC g ESC g ESC g s 
z C-c b ESC [ 2 1 ~ ESC [ 2 1 ~ ESC [ 2 1 ~ ESC [ 2 
1 ~ C-c b ESC v C-x v = <switch-frame> ESC : ( p o 
p - t o - b u f f e r SPC " * v c - d i f f * " ) RET 
<switch-frame> ESC x r e p o r t - e m TAB b u TAB 
RET

Recent messages:
Saving /home/tromey/.newsrc.eld...done
call-interactively: Beginning of buffer
Opening nntp server on redhat...done
Opening nntp server on news.gmane.org...done
(No changes need to be saved)
Saving /home/tromey/.newsrc.eld...
Saving file /home/tromey/.newsrc.eld...
Wrote /home/tromey/.newsrc.eld
Saving /home/tromey/.newsrc.eld...done
Finding changes in /home/tromey/gnu/Emacs/git-emacs/emacs/src/buffer.c...done
#<buffer *vc-diff*>
Tom






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