+ hg init + hg add a b + hg commit -m commit #0 -d 0 0 + hg commit -mcomment #1 -d 0 0 + hg update 0 + hg commit -A -mcomment #2 -d 0 0 removing b + hg update 1 this update spans a branch affecting the following files: b aborting update spanning branches! (use update -m to perform a branch merge)