$ cat check_bug_id #!/bin/sh # check that a commit comment mentions a numeric bug id hg log -r $1 --template {desc} | grep -q "\<bug *[0-9]" $ echo 'pretxncommit.bug_id_required = ./check_bug_id $HG_NODE' >> .hg/hgrc $ echo a >> a $ hg commit -m 'i am not mentioning a bug id' transaction abort! rollback completed abort: pretxncommit.bug_id_required hook exited with status 1 $ hg commit -m 'i refer you to bug 666' committed