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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: [Emacs-diffs] Changes to emacs/lib-src/makefile.w32-in,v
Date: Tue, 28 Nov 2006 06:10:47 +0200
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> Date: Mon, 27 Nov 2006 17:20:55 +0100
> From: "Juanma Barranquero" <lekktu@gmail.com>
> Cc: emacs-devel@gnu.org
> 
> > (While at that, we should also avoid recreating makefile's and other
> > files produced by nt/configure.bat if the new version would be
> > identical to the old one, to avoid unnecessary recompilation.)
> 
> That shouldn't be too tricky, if you can count on a reliable way to
> compare the old and new files. (Do we require diff right now? I don't
> think so.)

We could write a small program that does what the move-if-changed
script does, and use that.