Avoid allocation in #'integer-length; add #'logcount. lisp/ChangeLog addition: 2015-05-29 Aidan Kehoe <kehoea@parhasard.net> * byte-optimize.el (side-effect-free-fns): Add #'integer-length, #'logcount here. * cl-extra.el: * cl-extra.el (integer-length): Update this to avoid allocating memory. * cl-extra.el (logcount): New. Return the number of one bits in INTEGER, if non-negative. Function from Common Lisp. tests/ChangeLog addition: 2015-05-29 Aidan Kehoe <kehoea@parhasard.net> * automated/lisp-tests.el: Test #'integer-length, #'logcount in this file.

#!/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