bug#11608: 24.0.94; `shell-resync-dirs' fails if a directory name from the directory stack contains a space

[Oleksandr Manzyuk <manzyuk@gmail.com>]

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':

1. emacs -Q
2. M-x shell
3. mkdir "Foo Bar"
4. pushd "Foo Bar"
5. M-x shell-resync-dirs displays a message "Couldn't cd".  This happens
because `shell-resync-dirs' tries to parse the output of "dirs" treating
it as a space separated list of directories.  So the output of "dirs"

~/Foo Bar ~

is parsed as three directories "~/Foo", "Bar", and "~".

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
/home/manzyuk/share/emacs/24.0.94/etc/DEBUG.


In GNU Emacs 24.0.94.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.20.1)
 of 2012-03-07 on paddy
Configured using:
 `configure '--prefix=/home/manzyuk''

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: Shell

Minor modes in effect:
  shell-dirtrack-mode: t
  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
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
ESC [ > 8 5 ; 9 5 ; 0 c ESC x s h e l l RET c d RET
m k d i r SPC " F o o SPC B a r " RET p u s h d SPC
" F DEL DEL F o o TAB RET ESC x s h e l l - r e s y
n c - d i r s RET ESC x r e p o r TAB RET

Recent messages:
("/home/manzyuk/bin/emacs")
For information about GNU Emacs and the GNU system, type C-h C-a.
~
~/Foo Bar ~
Couldn't cd
You can run the command `shell-resync-dirs' with M-RET

Load-path shadows:
None found.

Features:
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mm-util mail-prsvr mail-utils pcmpl-unix shell pcomplete comint
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dynamic-setting system-font-setting font-render-setting move-toolbar gtk
x-toolkit x multi-tty emacs)