errors: raise InputError if an ambiguous revision id prefix is used
It's long bothered me that we include the "00changelog.i" part in a
message to the user. This fixes that along with the exit code.
Differential Revision: https://phab.mercurial-scm.org/D9600
Ancestors of 5
4 2 0
Ancestors of 6 and 5
4 3 2 1 0
Ancestors of 5 and 4
4 2 0
Ancestors of 7, stop at 6
6
Ancestors of 7, including revs
7 6 5 4 3 2 1 0
Ancestors of 7, 5 and 3, including revs
7 6 5 4 3 2 1 0
Descendants of 5
7 8
Descendants of 5 and 3
6 7 8
Descendants of 5 and 4
5 7 8