Merge branch 'pw/rebase-abort-clean-rewritten' into maint

"git rebase --abort" used to leave refs/rewritten/ when concluding
"git rebase -r", which has been corrected.

* pw/rebase-abort-clean-rewritten:
  rebase --abort/--quit: cleanup refs/rewritten
  sequencer: return errors from sequencer_remove_state()
  rebase: warn if state directory cannot be removed
  rebase: fix a memory leak

builtin/rebase.c

@@ -738,6 +738,7 @@ static int finish_rebase(struct rebase_options *opts)
 {
 	struct strbuf dir = STRBUF_INIT;
 	const char *argv_gc_auto[] = { "gc", "--auto", NULL };
+	int ret = 0;
 
 	delete_ref(NULL, "REBASE_HEAD", NULL, REF_NO_DEREF);
 	apply_autostash(opts);
@@ -747,11 +748,20 @@ static int finish_rebase(struct rebase_options *opts)
 	 * user should see them.
 	 */
 	run_command_v_opt(argv_gc_auto, RUN_GIT_CMD);
-	strbuf_addstr(&dir, opts->state_dir);
-	remove_dir_recursively(&dir, 0);
-	strbuf_release(&dir);
+	if (opts->type == REBASE_INTERACTIVE) {
+		struct replay_opts replay = REPLAY_OPTS_INIT;
 
-	return 0;
+		replay.action = REPLAY_INTERACTIVE_REBASE;
+		ret = sequencer_remove_state(&replay);
+	} else {
+		strbuf_addstr(&dir, opts->state_dir);
+		if (remove_dir_recursively(&dir, 0))
+			ret = error(_("could not remove '%s'"),
+				    opts->state_dir);
+		strbuf_release(&dir);
+	}
+
+	return ret;
 }
 
 static struct commit *peel_committish(const char *name)
@@ -1627,15 +1637,23 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
 			die(_("could not move back to %s"),
 			    oid_to_hex(&options.orig_head));
 		remove_branch_state(the_repository);
-		ret = finish_rebase(&options);
+		ret = !!finish_rebase(&options);
 		goto cleanup;
 	}
 	case ACTION_QUIT: {
-		strbuf_reset(&buf);
-		strbuf_addstr(&buf, options.state_dir);
-		ret = !!remove_dir_recursively(&buf, 0);
-		if (ret)
-			die(_("could not remove '%s'"), options.state_dir);
+		if (options.type == REBASE_INTERACTIVE) {
+			struct replay_opts replay = REPLAY_OPTS_INIT;
+
+			replay.action = REPLAY_INTERACTIVE_REBASE;
+			ret = !!sequencer_remove_state(&replay);
+		} else {
+			strbuf_reset(&buf);
+			strbuf_addstr(&buf, options.state_dir);
+			ret = !!remove_dir_recursively(&buf, 0);
+			if (ret)
+				error(_("could not remove '%s'"),
+				       options.state_dir);
+		}
 		goto cleanup;
 	}
 	case ACTION_EDIT_TODO:
@@ -2150,6 +2168,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
 	ret = !!run_specific_rebase(&options, action);
 
 cleanup:
+	strbuf_release(&buf);
 	strbuf_release(&revisions);
 	free(options.head_name);
 	free(options.gpg_sign_opt);

sequencer.c

@@ -279,7 +279,7 @@ static const char *gpg_sign_opt_quoted(struct replay_opts *opts)
 int sequencer_remove_state(struct replay_opts *opts)
 {
 	struct strbuf buf = STRBUF_INIT;
-	int i;
+	int i, ret = 0;
 
 	if (is_rebase_i(opts) &&
 	    strbuf_read_file(&buf, rebase_path_refs_to_delete(), 0) > 0) {
@@ -288,8 +288,10 @@ int sequencer_remove_state(struct replay_opts *opts)
 			char *eol = strchr(p, '\n');
 			if (eol)
 				*eol = '\0';
-			if (delete_ref("(rebase -i) cleanup", p, NULL, 0) < 0)
+			if (delete_ref("(rebase -i) cleanup", p, NULL, 0) < 0) {
 				warning(_("could not delete '%s'"), p);
+				ret = -1;
+			}
 			if (!eol)
 				break;
 			p = eol + 1;
@@ -305,10 +307,11 @@ int sequencer_remove_state(struct replay_opts *opts)
 
 	strbuf_reset(&buf);
 	strbuf_addstr(&buf, get_dir(opts));
-	remove_dir_recursively(&buf, 0);
+	if (remove_dir_recursively(&buf, 0))
+		ret = error(_("could not remove '%s'"), buf.buf);
 	strbuf_release(&buf);
 
-	return 0;
+	return ret;
 }
 
 static const char *action_name(const struct replay_opts *opts)

t/t3430-rebase-merges.sh

@@ -224,8 +224,24 @@ test_expect_success 'refs/rewritten/* is worktree-local' '
 	test_cmp_rev HEAD "$(cat wt/b)"
 '
 
+test_expect_success '--abort cleans up refs/rewritten' '
+	git checkout -b abort-cleans-refs-rewritten H &&
+	GIT_SEQUENCE_EDITOR="echo break >>" git rebase -ir @^ &&
+	git rev-parse --verify refs/rewritten/onto &&
+	git rebase --abort &&
+	test_must_fail git rev-parse --verify refs/rewritten/onto
+'
+
+test_expect_success '--quit cleans up refs/rewritten' '
+	git checkout -b quit-cleans-refs-rewritten H &&
+	GIT_SEQUENCE_EDITOR="echo break >>" git rebase -ir @^ &&
+	git rev-parse --verify refs/rewritten/onto &&
+	git rebase --quit &&
+	test_must_fail git rev-parse --verify refs/rewritten/onto
+'
+
 test_expect_success 'post-rewrite hook and fixups work for merges' '
-	git checkout -b post-rewrite &&
+	git checkout -b post-rewrite H &&
 	test_commit same1 &&
 	git reset --hard HEAD^ &&
 	test_commit same2 &&