There's actually 3 situations that are interesting to the "right-of" that column:
1. A patch is attached to the launchpad bug
2. A git/bzr/svn/etc. commit id/string is mentioned in a comment on the launchpad bug
3. The upstream bug is marked closed
(Note that a git commit id or patch on the upstream bug report is also interesting, but to a lesser degree than these three.)
There's actually 3 situations that are interesting to the "right-of" that column:
1. A patch is attached to the launchpad bug
2. A git/bzr/svn/etc. commit id/string is mentioned in a comment on the launchpad bug
3. The upstream bug is marked closed
(Note that a git commit id or patch on the upstream bug report is also interesting, but to a lesser degree than these three.)