-Each commit between the fork-point and <head> is examined, and
-compared against the change each commit between the fork-point and
-<upstream> introduces. If the change seems to be in the upstream,
-it is shown on the standard output with prefix "+". Otherwise
-it is shown with prefix "-".
-'
+Each commit between the fork-point (or <limit> if given) and <head> is
+examined, and compared against the change each commit between the
+fork-point and <upstream> introduces. If the change seems to be in
+the upstream, it is shown on the standard output with prefix "+".
+Otherwise it is shown with prefix "-".'
+. git-sh-setup