GNU bug report logs - #19463
25.0.50; Files with special chars in the name cannot be written on MS Windows

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: 19463 <at> debbugs.gnu.org
Subject: bug#19463: 25.0.50; Files with special chars in the name cannot be written on MS Windows
Date: Mon, 29 Dec 2014 18:37:08 +0200

> From: Michael Albinus <michael.albinus <at> gmx.de>
> Date: Mon, 29 Dec 2014 16:56:48 +0100
> 
> 
> The following problem I have observed when running tramp-tests.el on MS
> Windows. It isn't a Tramp problem, 'tho.

It's a basic documented limitation of the file APIs, at least on the
level that Emacs on Windows uses them.  See

  http://msdn.microsoft.com/en-us/library/windows/desktop/aa365247%28v=vs.85%29.aspx

(look under "Naming Conventions").

> Files with special characters in their file name cannont be written
> locally. The following test is derived from tramp-test30-special-characters.
> Note, that this testcase runs w/o problems under GNU/Linux.

This is expected.  What exactly do you want us to do with this issue?
Unless we radically change the way we do file I/O (similarly to what
Cygwin does), which is a very large job, this issue cannot be
resolved.

We simply should not use such file names on Windows.

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