tests/test-help

identify: have consistent output for local repositories

Also, add some extensive testing for it (hardly any in the suite so far).

#!/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