It only recognised trailers written with a colon, so "Fixes #12", which
GitHub closes on just the same, went unchecked, as did fix, fixed, close,
closed, resolve and resolved. The colon is now optional and every closing
keyword counts.
It also treated any failed lookup as a missing issue, so a rate limit or an
outage would have left a public comment on a commit saying a real issue did
not exist. Now only a 404 does that; anything else is a warning in the log.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>