Change grep -e to grep --all
We want to reserve -e for future use and grep compatibility.
I've changed every-match to all out of a general preference for
shorter long option names where short options don't exist.
#!/bin/sh
hg init
mkfifo p
hg serve --stdio < p &
P=$!
(echo lock; echo addchangegroup; sleep 5) > p &
Q=$!
sleep 1
kill -HUP $P
sleep 1
ls .hg