If 'revert' is part of the commit message, bugherder treats it as a backout unless it's a partial backout https://github.com/mozilla/bugherder/blob/0d29c5de3e600f30170e98cade5afcd29dd6e2b9/bugherder/js/PushData.js#L157 This causes changesets to be wrongly classified as backouts, see https://bugherder.mozilla.org/?cset=6276ec7ebbf33e3484997b189f20fc1511534187&tree=mozilla-central Should "revert" be ignored if it's anywhere but the start (after the bug number) in the commit message or also if directly after the bug number because these reference a different bug which doesn't get reopened. See Andrei's push in https://bugherder.mozilla.org/?cset=6eeb97ca94f40189d5aa552da9e0b0b11bfa0441&tree=mozilla-central as example.

Sounds worth a try. Just make sure the SV folks are on the lookout for any false positives so we can weigh the risk/reward better.

Test e.g. with https://bugherder.mozilla.org/?cset=6eeb97ca94f40189d5aa552da9e0b0b11bfa0441&tree=mozilla-central and https://bugherder.mozilla.org/?cset=6276ec7ebbf33e3484997b189f20fc1511534187&tree=mozilla-central