Does anyone know where a canonical copy of move-if-change is stored? Or maybe no existing version is good enough for GNU standards, and we should make gnulib become the canonical home of a proper implementation? I would like to add it into gnulib/build-aux, so that projects can easily grab the latest version of it from gnulib.
A quick google found a couple of candidates: http://gcc.gnu.org/svn/gcc/trunk/move-if-change - no copyright, no --version support, but at least a usage message http://examples.oreilly.com/palmprog/CDROM/Linux/libs_utils/binutils-2.7/move- if-change - GPLv2+, but no --help support or usage message, and quoting problems -- Eric Blake
