bug#14030: 24.3; expand-file-name expands remote file name on Windows incorrectly

["Vida Gábor" <vidagabor@gmail.com>]

Hi!

Emacs 24.2 on Windows doesn't expand remote file names:

  (expand-file-name "/ssh:user@host:/")
  "/ssh:user@host:/"

While Emacs 24.3.1 does:

(expand-file-name "/ssh:user@host:/")
"/ssh:user@host:c:/"

And this makes Tramp to fail (it can't find proper ls command, but
that's a side effect).

It's probably affects only the Windows build, because cygwin build of
emacs 24.3.1 doesn't produce the same fault.

I start Emacs from a Cygwin terminal (but not the Cygwin version of
Emacs). Just for your information.

-- 
Best regards,
Gábor

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Please describe exactly what actions triggered the bug, and
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If Emacs crashed, and you have the Emacs process in the gdb debugger,
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For information about debugging Emacs, please read the file
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In GNU Emacs 24.3.1 (i386-mingw-nt6.1.7601)
 of 2013-03-17 on MARVIN
Windowing system distributor `Microsoft Corp.', version 6.1.7601
Configured using:
 `configure --with-gcc (4.7) --cflags
 -ID:/devel/emacs/libs/libXpm-3.5.8/include
 -ID:/devel/emacs/libs/libXpm-3.5.8/src
 -ID:/devel/emacs/libs/libpng-dev_1.4.3-1/include
 -ID:/devel/emacs/libs/zlib-dev_1.2.5-2/include
 -ID:/devel/emacs/libs/giflib-4.1.4-1/include
 -ID:/devel/emacs/libs/jpeg-6b-4/include
 -ID:/devel/emacs/libs/tiff-3.8.2-1/include
 -ID:/devel/emacs/libs/gnutls-3.0.9/include
 -ID:/devel/emacs/libs/libiconv-1.13.1-1-dev/include
 -ID:/devel/emacs/libs/libxml2-2.7.8/include/libxml2'

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: cp1252
  default enable-multibyte-characters: t

Major mode: Lisp Interaction

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
  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-x b * s c <tab> <return> C-y C-x C-e C-j C-p C-p 
C-SPC C-n C-n M-w M-x r e p o r t - e m a c s - b <tab> 
RET

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Mark set
"/ssh:user@host:c:/"
Mark activated

Load-path shadows:
None found.

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