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Date:	Thu, 09 Oct 2008 07:17:44 -0600
From:	Eric Blake <ebb9 AT byu DOT net>
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To:	cygwin AT cygwin DOT com
Subject:	Re: cygwin-1.7: mv appends .exe extension to .bat and .com files
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According to Corinna Vinschen on 10/9/2008 7:05 AM:
>> Install seems to strip the .exe extension in the process of copying
>> files to the destination directory.
> 
> Install *copies* files.  The resulting filename is not under control of
> Cygwin but exclusively under control of the copying application.  This
> is different from rename and link which are OS functions and thus
> implemented in Cygwin.

What this really means is that I need to add another cygwin-specific patch
in coreutils to make install keep track of .exe magic - if the user
specified a file without the suffix, but the real file has the suffix,
then the target should be created with the suffix (no different than some
of the .exe magic already in mv and cp).

> Actually it would be possible to change the filename at copy time by
> keeping track if a write to a file is the first write and if the bytes
> to write are equivalent to a PE/COFF header.  If so, Cygwin could
> rename foo to foo.exe without bothering the application.  That's what
> U/WIN does.  I'm not yet sure if that's something we want to do, too.

Nah; that sounds like a lot of overhead.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9 AT byu DOT net
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