1 files changed, 39 insertions, 13 deletions

diff --git a/revision.c b/revision.c
index 8a29cb03c5..67ebc6fc4b 100644
--- a/revision.c
+++ b/revision.c
@@ -147,7 +147,7 @@ static void add_pending_object_with_path(struct rev_info *revs,
 		revs->no_walk = 0;
 	if (revs->reflog_info && obj->type == OBJ_COMMIT) {
 		struct strbuf buf = STRBUF_INIT;
-		int len = interpret_branch_name(name, 0, &buf);
+		int len = interpret_branch_name(name, 0, &buf, 0);
 		int st;
 
 		if (0 < len && name[len] && buf.len)
@@ -230,7 +230,7 @@ static struct commit *handle_commit(struct rev_info *revs,
 			die("bad tag");
 		object = parse_object(tag->tagged->oid.hash);
 		if (!object) {
-			if (flags & UNINTERESTING)
+			if (revs->ignore_missing_links || (flags & UNINTERESTING))
 				return NULL;
 			die("bad object %s", oid_to_hex(&tag->tagged->oid));
 		}
@@ -1196,11 +1196,11 @@ static void handle_refs(const char *submodule, struct rev_info *revs, unsigned f
 	for_each(submodule, handle_one_ref, &cb);
 }
 
-static void handle_one_reflog_commit(unsigned char *sha1, void *cb_data)
+static void handle_one_reflog_commit(struct object_id *oid, void *cb_data)
 {
 	struct all_refs_cb *cb = cb_data;
-	if (!is_null_sha1(sha1)) {
-		struct object *o = parse_object(sha1);
+	if (!is_null_oid(oid)) {
+		struct object *o = parse_object(oid->hash);
 		if (o) {
 			o->flags |= cb->all_flags;
 			/* ??? CMDLINEFLAGS ??? */
@@ -1214,12 +1214,12 @@ static void handle_one_reflog_commit(unsigned char *sha1, void *cb_data)
 	}
 }
 
-static int handle_one_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
+static int handle_one_reflog_ent(struct object_id *ooid, struct object_id *noid,
 		const char *email, unsigned long timestamp, int tz,
 		const char *message, void *cb_data)
 {
-	handle_one_reflog_commit(osha1, cb_data);
-	handle_one_reflog_commit(nsha1, cb_data);
+	handle_one_reflog_commit(ooid, cb_data);
+	handle_one_reflog_commit(noid, cb_data);
 	return 0;
 }
 
@@ -1275,7 +1275,7 @@ void add_index_objects_to_pending(struct rev_info *revs, unsigned flags)
 		if (S_ISGITLINK(ce->ce_mode))
 			continue;
 
-		blob = lookup_blob(ce->sha1);
+		blob = lookup_blob(ce->oid.hash);
 		if (!blob)
 			die("unable to add index blob to traversal");
 		add_pending_object_with_path(revs, &blob->object, "",
@@ -1289,12 +1289,14 @@ void add_index_objects_to_pending(struct rev_info *revs, unsigned flags)
 	}
 }
 
-static int add_parents_only(struct rev_info *revs, const char *arg_, int flags)
+static int add_parents_only(struct rev_info *revs, const char *arg_, int flags,
+			    int exclude_parent)
 {
 	unsigned char sha1[20];
 	struct object *it;
 	struct commit *commit;
 	struct commit_list *parents;
+	int parent_number;
 	const char *arg = arg_;
 
 	if (*arg == '^') {
@@ -1316,7 +1318,15 @@ static int add_parents_only(struct rev_info *revs, const char *arg_, int flags)
 	if (it->type != OBJ_COMMIT)
 		return 0;
 	commit = (struct commit *)it;
-	for (parents = commit->parents; parents; parents = parents->next) {
+	if (exclude_parent &&
+	    exclude_parent > commit_list_count(commit->parents))
+		return 0;
+	for (parents = commit->parents, parent_number = 1;
+	     parents;
+	     parents = parents->next, parent_number++) {
+		if (exclude_parent && parent_number != exclude_parent)
+			continue;
+
 		it = &parents->item->object;
 		it->flags |= flags;
 		add_rev_cmdline(revs, it, arg_, REV_CMD_PARENTS_ONLY, flags);
@@ -1519,17 +1529,33 @@ int handle_revision_arg(const char *arg_, struct rev_info *revs, int flags, unsi
 		}
 		*dotdot = '.';
 	}
+
 	dotdot = strstr(arg, "^@");
 	if (dotdot && !dotdot[2]) {
 		*dotdot = 0;
-		if (add_parents_only(revs, arg, flags))
+		if (add_parents_only(revs, arg, flags, 0))
 			return 0;
 		*dotdot = '^';
 	}
 	dotdot = strstr(arg, "^!");
 	if (dotdot && !dotdot[2]) {
 		*dotdot = 0;
-		if (!add_parents_only(revs, arg, flags ^ (UNINTERESTING | BOTTOM)))
+		if (!add_parents_only(revs, arg, flags ^ (UNINTERESTING | BOTTOM), 0))
+			*dotdot = '^';
+	}
+	dotdot = strstr(arg, "^-");
+	if (dotdot) {
+		int exclude_parent = 1;
+
+		if (dotdot[2]) {
+			char *end;
+			exclude_parent = strtoul(dotdot + 2, &end, 10);
+			if (*end != '\0' || !exclude_parent)
+				return -1;
+		}
+
+		*dotdot = 0;
+		if (!add_parents_only(revs, arg, flags ^ (UNINTERESTING | BOTTOM), exclude_parent))
 			*dotdot = '^';
 	}