tests/test-mq-guards

mq: new commands qselect, qguard

implement quilt-style guards for mq.

guards allow to control whether patch can be pushed.

if guard X is active and patch is guarded by +X (called "posative guard"),
patch can be pushed.  if patch is guarded by -X (called "nagative guard"),
patch cannot be pushed and is skipped.

use qguard to set/list guards on patches.  use qselect to set/list
active guards.

also "qseries -v" prints guarded patches with "G" now.

#!/bin/sh

HGRCPATH=$HGTMP/.hgrc; export HGRCPATH
echo "[extensions]" >> $HGTMP/.hgrc
echo "mq=" >> $HGTMP/.hgrc

hg init
hg qinit

echo x > x
hg ci -Ama

hg qnew a.patch
echo a > a
hg add a
hg qrefresh

hg qnew b.patch
echo b > b
hg add b
hg qrefresh

hg qnew c.patch
echo c > c
hg add c
hg qrefresh

hg qpop -a

echo % should fail
hg qguard +fail

hg qpush
echo % should guard a.patch
hg qguard +a
echo % should print +a
hg qguard
hg qpop

hg qguard a.patch
echo % should push b.patch
hg qpush

hg qpop
hg qselect a
echo % should push a.patch
hg qpush

hg qguard c.patch -a
echo % should print -a
hg qguard c.patch

echo % should skip c.patch
hg qpush -a

hg qguard -n c.patch
echo % should push c.patch
hg qpush -a

hg qpop -a
hg qselect -n
hg qpush -a