David Bremner <david@tethera.net> writes: > Xu Wang <xuwang762@gmail.com> writes: > >> I bump this. Actually more simple than that, how to search for thread >> in which I have participated and Jian has participated? Excluding >> threads in which Dave participated is perhaps more complicated. > > I don't know of an efficient way to do this. You could write a script > something like > > notmuch search --output=threads from:Xu > A > notmuch search --output=threads from:Jian > B > comm -12 A B > > I think the output is sorted, but you might also have to sort A and B I did test that part before posting mine, and the output is inverted. --sort=oldest-first *also* gets it wrong, though in more subtle ways. Piping through `sort -u` is the only way to be sure (I can't imagine the -u helping, but I also can't imagine it hurting and it's cheap).