tests/test-hup

Move merge code to its own module

Pull update and merge3 out of localrepo into merge.py
s/self/repo/
Add temporary API function in hg.py
Convert all users

#!/bin/sh

hg init
mkfifo p

hg serve --stdio < p &
P=$!
(echo lock; echo addchangegroup; sleep 5) > p &
Q=$!
sleep 3
kill -HUP $P
wait
ls .hg