1 files changed, 68 insertions, 0 deletions
diff --git a/git-rebase.sh b/git-rebase.sh
new file mode 100755
index 000000000..49c8f12e5
--- /dev/null
+++ b/git-rebase.sh
@@ -0,0 +1,68 @@
+#!/bin/sh
+#
+# Copyright (c) 2005 Junio C Hamano.
+#
+
+. git-sh-setup || die "Not a git archive."
+
+usage="usage: $0 "'<upstream> [<head>]
+
+Uses output from git-cherry to rebase local commits to the new head of
+upstream tree.'
+
+case "$#,$1" in
+1,*..*)
+    upstream=$(expr "$1" : '\(.*\)\.\.') ours=$(expr "$1" : '.*\.\.\(.*\)$')
+    set x "$upstream" "$ours"
+    shift ;;
+esac
+
+git-update-index --refresh || exit
+
+case "$#" in
+1) ours_symbolic=HEAD ;;
+2) ours_symbolic="$2" ;;
+*) die "$usage" ;;
+esac
+
+upstream=`git-rev-parse --verify "$1"` &&
+ours=`git-rev-parse --verify "$ours_symbolic"` || exit
+different1=$(git-diff-index --name-only --cached "$ours") &&
+different2=$(git-diff-index --name-only "$ours") &&
+test "$different1$different2" = "" ||
+die "Your working tree does not match $ours_symbolic."
+
+git-read-tree -m -u $ours $upstream &&
+git-rev-parse --verify "$upstream^0" >"$GIT_DIR/HEAD" || exit
+
+tmp=.rebase-tmp$$
+fail=$tmp-fail
+trap "rm -rf $tmp-*" 1 2 3 15
+
+>$fail
+
+git-cherry -v $upstream $ours |
+while read sign commit msg
+do
+	case "$sign" in
+	-)
+		echo >&2 "* Already applied: $msg"
+		continue ;;
+	esac
+	echo >&2 "* Applying: $msg"
+	S=`cat "$GIT_DIR/HEAD"` &&
+	git-cherry-pick --replay $commit || {
+		echo >&2 "* Not applying the patch and continuing."
+		echo $commit >>$fail
+		git-reset --hard $S
+	}
+done
+if test -s $fail
+then
+	echo >&2 Some commits could not be rebased, check by hand:
+	cat >&2 $fail
+	echo >&2 "(the same list of commits are found in $tmp)"
+	exit 1
+else
+	rm -f $fail
+fi