bug#8093: etags: Downcase drive letters, for consistency with Emacs proper.

[Eli Zaretskii]

> Date: Tue, 22 Feb 2011 11:11:36 +0100
> From: Francesco Potortì= <pot@gnu.org>
> Cc: bug-gnu-emacs@gnu.org, owner@debbugs.gnu.org, 8093@debbugs.gnu.org
> 
> >Emacs downcases drive letters when canonicalizing file names on
> >Microsoft Windows, but etags upcases them.  etags should be consistent
> >with Emacs.  I found this problem by code inspection, because there's
> >a macro 'upcase' that normally isn't used in etags.c; its only use is
> >in the section of code that upcases drive letters.  Here's a proposed
> >patch.
> 
> Looks reasonable and I see no compatibility issues.  Please install it.

Agreed.

Thanks, Paul.