Merge branch 'lt/revision-walker'

* lt/revision-walker:
  Add "--show-all" revision walker flag for debugging

builtin-rev-list.c

@@ -60,6 +60,8 @@ static void show_commit(struct commit *commit)
 		fputs(header_prefix, stdout);
 	if (commit->object.flags & BOUNDARY)
 		putchar('-');
+	else if (commit->object.flags & UNINTERESTING)
+		putchar('^');
 	else if (revs.left_right) {
 		if (commit->object.flags & SYMMETRIC_LEFT)
 			putchar('<');
@@ -84,7 +86,7 @@ static void show_commit(struct commit *commit)
 	else
 		putchar('\n');
 
-	if (revs.verbose_header) {
+	if (revs.verbose_header && commit->buffer) {
 		struct strbuf buf;
 		strbuf_init(&buf, 0);
 		pretty_print_commit(revs.commit_format, commit,

log-tree.c

@@ -149,10 +149,12 @@ void show_log(struct rev_info *opt, const char *sep)
 
 	opt->loginfo = NULL;
 	if (!opt->verbose_header) {
-		if (opt->left_right) {
-			if (commit->object.flags & BOUNDARY)
-				putchar('-');
-			else if (commit->object.flags & SYMMETRIC_LEFT)
+		if (commit->object.flags & BOUNDARY)
+			putchar('-');
+		else if (commit->object.flags & UNINTERESTING)
+			putchar('^');
+		else if (opt->left_right) {
+			if (commit->object.flags & SYMMETRIC_LEFT)
 				putchar('<');
 			else
 				putchar('>');
@@ -250,6 +252,8 @@ void show_log(struct rev_info *opt, const char *sep)
 			fputs("commit ", stdout);
 		if (commit->object.flags & BOUNDARY)
 			putchar('-');
+		else if (commit->object.flags & UNINTERESTING)
+			putchar('^');
 		else if (opt->left_right) {
 			if (commit->object.flags & SYMMETRIC_LEFT)
 				putchar('<');
@@ -278,6 +282,9 @@ void show_log(struct rev_info *opt, const char *sep)
 		}
 	}
 
+	if (!commit->buffer)
+		return;
+
 	/*
 	 * And then the pretty-printed message itself
 	 */

revision.c

@@ -564,6 +564,12 @@ static void cherry_pick_list(struct commit_list *list, struct rev_info *revs)
 	free_patch_ids(&ids);
 }
 
+static void add_to_list(struct commit_list **p, struct commit *commit, struct commit_list *n)
+{
+	p = &commit_list_insert(commit, p)->next;
+	*p = n;
+}
+
 static int limit_list(struct rev_info *revs)
 {
 	struct commit_list *list = revs->commits;
@@ -585,9 +591,13 @@ static int limit_list(struct rev_info *revs)
 			return -1;
 		if (obj->flags & UNINTERESTING) {
 			mark_parents_uninteresting(commit);
-			if (everybody_uninteresting(list))
+			if (everybody_uninteresting(list)) {
+				if (revs->show_all)
+					add_to_list(p, commit, list);
 				break;
-			continue;
+			}
+			if (!revs->show_all)
+				continue;
 		}
 		if (revs->min_age != -1 && (commit->date > revs->min_age))
 			continue;
@@ -1063,6 +1073,10 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
 				revs->dense = 0;
 				continue;
 			}
+			if (!strcmp(arg, "--show-all")) {
+				revs->show_all = 1;
+				continue;
+			}
 			if (!strcmp(arg, "--remove-empty")) {
 				revs->remove_empty_trees = 1;
 				continue;
@@ -1446,6 +1460,8 @@ enum commit_action simplify_commit(struct rev_info *revs, struct commit *commit)
 		return commit_ignore;
 	if (revs->unpacked && has_sha1_pack(commit->object.sha1, revs->ignore_packed))
 		return commit_ignore;
+	if (revs->show_all)
+		return commit_show;
 	if (commit->object.flags & UNINTERESTING)
 		return commit_ignore;
 	if (revs->min_age != -1 && (commit->date > revs->min_age))

revision.h

@@ -33,6 +33,7 @@ struct rev_info {
 			prune:1,
 			no_merges:1,
 			no_walk:1,
+			show_all:1,
 			remove_empty_trees:1,
 			simplify_history:1,
 			lifo:1,