On 10/10/12 8:31 AM, Eli Zaretskii wrote:
>> Date: Tue, 09 Oct 2012 22:36:21 -0700
>> From: Daniel Colascione <dancol@dancol.org>
>>
>> I wrote a bit of code to handle Windows paths in being given to
>> read-file-name in a Cygwin Emacs --- it's just a simple
>> file-name-handler-alist entry that overrides substitute-in-file-name
>> for Windows paths to yield the corresponding Cygwin path.
> 
> I'm not sure I understand the use case.  Are you talking about a user
> who wants to feed a Cygwin Emacs with a native Windows style file
> name?  Why would she want to do that?

Copy and paste from the clipboard comes to mind.  Cygwin itself deals
adequately with being given Windows paths --- it's Emacs that could
handle them more elegantly.

> I could understand a different use case: when a native Windows program
> invoked by a Cygwin Emacs returns Windows style file names.  But for
> that, read-file-name is not the place to add support for this.

That's why I made it a substitute-in-file-name hander. Where would you
put the code?