Two (probably) useful Mercurial hooks

Here’s two Mercurial hooks I wrote for my work. One is a reminder to mention Trac tickets in commit messages, and the other notifies a developer when someone (not them) touches their part of project.

Here’s reminder. It’s commit hook, run after commit was made. If you forgot to write something like “fixes #666”, it’d echo “Have you forgot to mention ticket?” and commit message back to you, just in time for hg rollback (or hg commit --amend in recent Mercurial versions) and changing message. Or ignoring it, of course.

#!/bin/sh

ci_msg=$(hg log -r "${HG_NODE}" --template "{desc}")
echo "$ci_msg" | grep -E -q '#[[:digit:]]{1,4}' && exit 0
echo "Have you forgot to mention ticket?
hg log -r "${HG_NODE}" --template "{desc}\n"

And here’s notifier. It’s intended to be incoming hook and looks if files in certain directories were modifiled by anyone except certain person. And sends message via ssmtp.

#!/bin/sh

notify() {
    cp -f /var/hg/ntf.templ /tmp
    echo "See https://<HG-SERVER>/<REPO>/rev/${HG_NODE}" >> /tmp/ntf.templ
    hg log -r ${HG_NODE} -p >> /tmp/ntf.templ
    sendmail recipient@mail.domain < "/tmp/ntf.templ"
}

hg log -r ${HG_NODE} --template "{author}" | grep -q '<AUTHOR-TO-BE-IGNORED>' && exit 0
hg log -r ${HG_NODE} --template "{files}" | grep -E -q '<FILE-REGEX>' && notify

Regex example (looks for files in $(hg root)/modules/ and $(hg root)/lib/modules/):

(^| )(lib/)?modules

Sample /var/hg/ntf.templ:

To: recipient@mail.domain
From: notifier@mail.domain
Subject: Achtung Minen!

<Notification message body>