Ralf Schmitt wrote: > ralf at red:~/bbot/easyindex/bf$ hg backout Well, backout seems to require an argument: djc at enrai ~ $ hg help backout hg backout [OPTION]... REV So you just shouldn't do that. But it shouldn't throw an unexpected exception, and maybe this command should even be allowed (to mean, just backout tip). Regards, Dirkjan