Avoid errors in Dired when opening directories. lisp/ChangeLog addition: 2009-07-18 Aidan Kehoe <kehoea@parhasard.net> * files.el (find-file-create-switch-thunk): Check that #'buffer-file-name gives non-nil before trying to determine whether that file exists; avoids problems in dired. Thank you Mats Lidell!

#!/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