[PATCH] rebase: make the warning more useful when the work tree is unclean.

Instead of letting "update-index --refresh" report paths needing
updates and merges, use git-status to give more useful output.

Signed-off-by: Junio C Hamano <redacted>
---

 * I won't be a good judge of the updated behaviour, as I never
   start rebase in an unclear tree.  Running git-status in a
   large tree may be too expensive to be worth changing the
   output.

 git-rebase.sh |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/git-rebase.sh b/git-rebase.sh
index 1583402..93e3b3c 100755
--- a/git-rebase.sh
+++ b/git-rebase.sh

@@ -254,7 +254,11 @@ else
 fi
 
 # The tree must be really really clean.
-git update-index --refresh || exit
+git update-index -q --refresh || {
+	git status
+	printf "cannot rebase: the work tree is not clean.\n"
+	exit 1
+}
 diff=$(git diff-index --cached --name-status -r HEAD)
 case "$diff" in
 ?*)	echo "cannot rebase: your index is not up-to-date"

-- 
1.5.3.3.1144.gf10f2