Improve extdiff configuration. In addition to the old cmd.foo, opts.foo hgrc entries, allow a more simple alias = command [opts]... form. For example: [extdiff] cdiff = colordiff -uprN

#!/bin/sh

echo "[extensions]" >> $HGRCPATH
echo "mq=" >> $HGRCPATH

hg init a
cd a

echo 'base' > base
hg ci -Ambase -d '1 0'

hg qnew -mmqbase mqbase

hg qsave
hg qrestore 2