[PATCH/WIP 4/8] rebase: turn rebase--merge into a separate program

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

---
 Makefile                       |  2 +-
 git-rebase--merge.sh (mode +x) | 34 ++++++++++++++++++++++++++++++++++
 git-rebase.sh                  |  2 ++
 3 files changed, 37 insertions(+), 1 deletion(-)
 mode change 100644 => 100755 git-rebase--merge.sh

diff --git a/Makefile b/Makefile
index 93151f4..7ee8df7 100644
--- a/Makefile
+++ b/Makefile
@@ -446,6 +446,7 @@ SCRIPT_SH += git-pull.sh
 SCRIPT_SH += git-quiltimport.sh
 SCRIPT_SH += git-rebase.sh
 SCRIPT_SH += git-rebase--am.sh
+SCRIPT_SH += git-rebase--merge.sh
 SCRIPT_SH += git-repack.sh
 SCRIPT_SH += git-request-pull.sh
 SCRIPT_SH += git-stash.sh
@@ -455,7 +456,6 @@ SCRIPT_SH += git-web--browse.sh
 SCRIPT_LIB += git-mergetool--lib
 SCRIPT_LIB += git-parse-remote
 SCRIPT_LIB += git-rebase--interactive
-SCRIPT_LIB += git-rebase--merge
 SCRIPT_LIB += git-sh-setup
 SCRIPT_LIB += git-sh-i18n
 
diff --git a/git-rebase--merge.sh b/git-rebase--merge.sh
old mode 100644
new mode 100755
index b10f2cf..baaef41
--- a/git-rebase--merge.sh
+++ b/git-rebase--merge.sh
@@ -3,8 +3,42 @@
 # Copyright (c) 2010 Junio C Hamano.
 #
 
+. git-sh-setup
+. git-sh-i18n
+set_reflog_action rebase
+require_work_tree_exists
+
+GIT_QUIET=$git_quiet
+
 prec=4
 
+write_basic_state () {
+	echo "$head_name" > "$state_dir"/head-name &&
+	echo "$onto" > "$state_dir"/onto &&
+	echo "$orig_head" > "$state_dir"/orig-head &&
+	echo "$GIT_QUIET" > "$state_dir"/quiet &&
+	test t = "$verbose" && : > "$state_dir"/verbose
+	test -n "$strategy" && echo "$strategy" > "$state_dir"/strategy
+	test -n "$strategy_opts" && echo "$strategy_opts" > \
+		"$state_dir"/strategy_opts
+	test -n "$allow_rerere_autoupdate" && echo "$allow_rerere_autoupdate" > \
+		"$state_dir"/allow_rerere_autoupdate
+}
+
+move_to_original_branch () {
+	case "$head_name" in
+	refs/*)
+		message="rebase finished: $head_name onto $onto"
+		git update-ref -m "$message" \
+			$head_name $(git rev-parse HEAD) $orig_head &&
+		git symbolic-ref \
+			-m "rebase finished: returning to $head_name" \
+			HEAD $head_name ||
+		die "$(gettext "Could not move back to $head_name")"
+		;;
+	esac
+}
+
 read_state () {
 	onto_name=$(cat "$state_dir"/onto_name) &&
 	end=$(cat "$state_dir"/end) &&
diff --git a/git-rebase.sh b/git-rebase.sh
index 42e868d..ff2c2ae 100755
--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -156,6 +156,8 @@ run_specific_rebase () {
 	export state_dir verbose strategy strategy_opts
 	if [ "$type" = am ]; then
 		exec git-rebase--am
+	elif [ "$type" = merge ]; then
+		exec git-rebase--merge
 	else
 		. git-rebase--$type
 	fi
-- 
2.3.0.rc1.137.g477eb31