Avoid signalling args-out-of-range errors, #'truncate-string-to-width lisp/ChangeLog addition: Avoid args-out-of-range errors, this function is regularly called from menu code and with debug-on-signal non-nil, this can be very irritating. Don't bind ellipsis-len, we don't use it.

#!/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