runbot/runbot_merge/changelog/2022-06/empty-body.md

FIX: correctly handle PR empty PR descriptions

Github's webhook for this case are weird, and weren't handled correctly,
updating a PR's description to *or from* empty might be mishandled.
[FIX] runbot_merge: correctly handle emptying PR body The previous version of the code assumed `pr['body']` is always a string, which is not correct, when the PR body is emptied the body itself is removed (its value is `None`). Add a case for this in the PR edition test, and avoid blowing up (or adding empty newlines) when the PR body is empty. For PR creation this issue was fixed in c2db5659d8d325939db66b07d0cb257e749bea82 but apparently I missed that the exact same issue occurs just a few lines above. Also turns out github does not send change information when the body is updated from (or to?) `None`, so don't even bother with that, just check every time if the overall message has been updated. Fixes #629 2022-07-11 19:00:35 +07:00			`FIX: correctly handle PR empty PR descriptions`

			`Github's webhook for this case are weird, and weren't handled correctly,`
			`updating a PR's description to or from empty might be mishandled.`