Fix traceback when nothing was added during unbundle The changegroup and commit hook are now run only when something is modified. The correct number of changesets added is printed.

#!/bin/sh

hg
hg -q
hg help
hg -q help
hg add -h
hg add --skjdfks
hg help diff
hg help status
hg -q help status
hg help foo
hg skjdfks

exit 0