On Mon, 04 Jul 2011 20:48:12 +0200, Pieter Praet <pieter@praet.org> wrote: > On Mon, 04 Jul 2011 13:56:26 -0400, Austin Clements <amdragon@MIT.EDU> wrote: > > I should probably emit two lists per thread: one of matched IDs and > > one of unmatched IDs. Tagging a region can then operate on the > > concatenation of these, while * can operate only on the matched > > lists. This should be easy to do. I'll send an updated patch when I'm > > back at a computer. > > The matched MsgIds will be sufficient, as we'll want to operate on > either the matched messages or the entire thread (for which the > `thread-id' property is already present). > > Can't think of a use case for non-matched messages right now, > but if required, we'll just use `set-exclusive-or'. Wasn't thinking clearly: You're right, we *will* be needing both a list of matched as well as one of unmatched Message-Id's per result. Otherwise there would still be a potential race condition when tagging with +/-. Peace -- Pieter