merge script: learn --[no-]rerere-autoupdate

Port v1.7.0-rc0~83^2 (Teach --[no-]rerere-autoupdate option to
merge, revert and friends, 2009-12-04) to the example merge script.

After this change, all tests pass for me with the scripted
merge.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/contrib/examples/git-merge.sh b/contrib/examples/git-merge.sh
index bed55a48dfbbea5055a2bb5cbe3436feb5c4458f..7b922c39480c8b78d0687cbabac59672f9ae6ede 100755 (executable)
--- a/contrib/examples/git-merge.sh
+++ b/contrib/examples/git-merge.sh
@@ -16,6 +16,7 @@ squash               create a single commit instead of doing a merge
 commit               perform a commit if the merge succeeds (default)
 ff                   allow fast-forward (default)
 ff-only              abort if fast-forward is not possible
+rerere-autoupdate    update index with any reused conflict resolution
 s,strategy=          merge strategy to use
 X=                   option for selected merge strategy
 m,message=           message to be used for the merge commit (if any)
@@ -48,7 +49,7 @@ xopt=
 allow_fast_forward=t
 fast_forward_only=
 allow_trivial_merge=t
-squash= no_commit= log_arg=
+squash= no_commit= log_arg= rr_arg=
 
 dropsave() {
        rm -f -- "$GIT_DIR/MERGE_HEAD" "$GIT_DIR/MERGE_MSG" \
@@ -200,6 +201,8 @@ parse_config () {
                        test "$allow_fast_forward" != f ||
                                die "You cannot combine --ff-only with --no-ff."
                        fast_forward_only=t ;;
+               --rerere-autoupdate|--no-rerere-autoupdate)
+                       rr_arg=$1 ;;
                -s|--strategy)
                        shift
                        case " $all_strategies " in
@@ -612,6 +615,6 @@ Conflicts:
                sed -e 's/^[^   ]*      /       /' |
                uniq
        } >>"$GIT_DIR/MERGE_MSG"
-       git rerere
+       git rerere $rr_arg
        die "Automatic merge failed; fix conflicts and then commit the result."
 fi