Suggestion: make --left-right work with --merge

It would be nice if git-log --merge --left-right did what git log
--merge does but additionally, if the merge is a 2-way merge, marked
commits with '<' or '>' according to which side of the merge they came
from.  Would that be possible?  I think the visual indication that
--left-right gives in gitk would be useful with --merge.

Paul.