bug#2862: 23.0.92; Dired can't visit file with backslash

[Oscar Fuentes]

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 emacs-pretest-bug@gnu.org mailing list.

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

Dired can't visit a file with a backslash on its name (such as
\foo). Those files are displayed with a double backslash. If the user
presses `v' (for viewing) of `f' (for visiting) the file, an error
message is displayed:

dired-get-file-for-visit: File no longer exists; type `g' to update dired buffer


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/local/share/emacs/23.0.90/etc/DEBUG for instructions.


In GNU Emacs 23.0.90.2 (x86_64-unknown-linux-gnu, GTK+ Version 2.14.4)
 of 2009-02-14 on qcore
Windowing system distributor `The X.Org Foundation', version 11.0.10502000
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: Dired by name

Minor modes in effect:
  shell-dirtrack-mode: t
  show-paren-mode: t
  diff-auto-refine-mode: t
  iswitchb-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-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
  column-number-mode: t
  line-number-mode: t

Recent input:
<down> <down> <down> <down> <down> C-x C-f X D i <tab> 
<return> M-x l o n g <tab> <return> C-x b <return> 
M-x <up> <return> <up> <up> <up> <up> <up> <up> <up> 
<up> <up> <up> <up> <up> <up> <up> <up> C-s C-s <up> 
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
<up> <up> C-s C-s C-n C-n C-n C-n C-n C-n C-l C-s C-s 
C-a C-x b <return> C-l C-s C-s C-a C-x b <return> M-x 
<up> <return> C-x b <return> M-x <up> <return> C-x 
b <return> C-x b <return> C-x b <return> C-x b <return> 
C-x b <return> C-x b <return> <up> <up> C-x b <return> 
<up> <up> <up> <up> <up> <up> <up> <up> <up> C-x b 
<return> <help-echo> <help-echo> <help-echo> <help-echo> 
<menu-bar> <options> <line-wrapping> <truncate> C-a 
<right> <right> <right> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <right> <up> 
C-a C-SPC C-SPC <S-down> <S-down> <S-down> <S-down> 
<up> <C-right> <C-right> <C-right> <C-right> <C-right> 
<C-right> <C-right> <C-right> <C-right> <C-right> <C-right> 
<C-right> <C-right> <C-right> <C-right> <C-right> <C-right> 
<C-right> <C-right> <C-right> <C-right> <C-right> <C-right> 
<C-right> <C-right> <C-right> <C-right> <help-echo> 
<help-echo> C-x k <return> C-x k <return> C-x k <return> 
C-x d <up> <up> <up> <return> <down> v g <down> <down> 
<down> <down> <down> <down> <down> <down> <up> v <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <menu-bar> <help-menu> 
<send-emacs-bug-report>

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dired-get-file-for-visit: File no longer exists; type `g' to update dired buffer
dired-get-file-for-visit: File no longer exists; type `g' to update dired buffer