[xemacs-hg @ 2004-06-17 03:01:10 by james] Synch with Emacs 21.3 derived.el, plus new stuff in subr.el to support it, as well as some documentation.

#!/bin/sh
if
test -r $2
then
if
cmp $1 $2 > /dev/null
then
echo $2 is unchanged
rm -f $1
else
mv -f $1 $2
fi
else
mv -f $1 $2
fi