Merge branch 'mz/rebase-no-mbox'

Teach "am --rebasing" codepath to grab authorship, log message and
the patch text directly out of existing commits.  This will help
rebasing commits that have confusing "diff" output in their log
messages.

* mz/rebase-no-mbox:
  am: don't call mailinfo if $rebasing
  am --rebasing: get patch body from commit, not from mailbox
  rebase --root: print usage on too many args
  rebase: don't source git-sh-setup twice

1 files changed, 5 insertions, 1 deletions

diff --git a/git-rebase.sh b/git-rebase.sh
index 6bd8eae648..5bddfa9690 100755
--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -414,6 +414,7 @@ else
 	test -z "$onto" && die "You must specify --onto when using --root"
 	unset upstream_name
 	unset upstream
+	test $# -gt 1 && usage
 	upstream_arg=--root
 fi
 
@@ -464,7 +465,7 @@ case "$#" in
 		die "fatal: no such branch: $1"
 	fi
 	;;
-*)
+0)
 	# Do not need to switch branches, we are already on it.
 	if branch_name=`git symbolic-ref -q HEAD`
 	then
@@ -476,6 +477,9 @@ case "$#" in
 	fi
 	orig_head=$(git rev-parse --verify "${branch_name}^0") || exit
 	;;
+*)
+	die "BUG: unexpected number of arguments left to parse"
+	;;
 esac
 
 require_clean_work_tree "rebase" "Please commit or stash them."