[PATCH] rebase -i: interrupt rebase when "commit --amend" failed during "reword"

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"commit --amend" could fail in cases like the user empties the commit
message, or pre-commit failed.  When it fails, rebase should be
interrupted, rather than ignoring the error and continue on rebasing.
This gives users a way to gracefully interrupt a "reword" if they
decided they actually want to do an "edit", or even "rebase --abort".

Signed-off-by: Andrew Wong <andrew.kw.w@xxxxxxxxx>
---
 git-rebase--interactive.sh |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index 804001b..669f378 100644
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -408,7 +408,8 @@ do_next () {
 		mark_action_done
 		pick_one $sha1 ||
 			die_with_patch $sha1 "Could not apply $sha1... $rest"
-		git commit --amend --no-post-rewrite
+		git commit --amend --no-post-rewrite ||
+			die_with_patch $sha1 "Cannot amend commit after successfully picking $sha1... $rest"
 		record_in_rewritten $sha1
 		;;
 	edit|e)
-- 
1.7.8.rc3.32.gb2fac

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