Merge branch 'pb/pull-rebase-autostash-fix' into seen

"git pull --rebase" ignored the rebase.autostash configuration
variable when the remote history is a descendant of our history,
which has been corrected.

* pb/pull-rebase-autostash-fix:
  pull --rebase: honor rebase.autostash even when fast-forwarding

Author: gitster

builtin/pull.c

@@ -1038,14 +1038,13 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
 		oidclr(&orig_head);
 
 	if (opt_rebase) {
-		int autostash = config_autostash;
-		if (opt_autostash != -1)
-			autostash = opt_autostash;
+		if (opt_autostash == -1)
+			opt_autostash = config_autostash;
 
 		if (is_null_oid(&orig_head) && !is_cache_unborn())
 			die(_("Updating an unborn branch with changes added to the index."));
 
-		if (!autostash)
+		if (!opt_autostash)
 			require_clean_work_tree(the_repository,
 				N_("pull with rebase"),
 				_("please commit or stash them."), 1, 0);

t/t5521-pull-options.sh

@@ -252,4 +252,56 @@ test_expect_success 'git pull --no-verify --verify passed to merge' '
 	test_must_fail git -C dst pull --no-ff --no-verify --verify
 '
 
+test_expect_success 'git pull --rebase --autostash succeeds on ff' '
+	test_when_finished "rm -fr src dst actual" &&
+	git init src &&
+	test_commit -C src "initial" file "content" &&
+	git clone src dst &&
+	test_commit -C src --printf "more_content" file "more content\ncontent\n" &&
+	echo "dirty" >>dst/file &&
+	git -C dst pull --rebase --autostash >actual 2>&1 &&
+	grep -q "Fast-forward" actual &&
+	grep -q "Applied autostash." actual
+'
+
+test_expect_success 'git pull --rebase with rebase.autostash succeeds on ff' '
+	test_when_finished "rm -fr src dst actual" &&
+	git init src &&
+	test_commit -C src "initial" file "content" &&
+	git clone src dst &&
+	test_commit -C src --printf "more_content" file "more content\ncontent\n" &&
+	echo "dirty" >>dst/file &&
+	test_config -C dst rebase.autostash true &&
+	git -C dst pull --rebase  >actual 2>&1 &&
+	grep -q "Fast-forward" actual &&
+	grep -q "Applied autostash." actual
+'
+
+test_expect_success 'git pull --rebase --autostash succeeds on non-ff' '
+	test_when_finished "rm -fr src dst actual" &&
+	git init src &&
+	test_commit -C src "initial" file "content" &&
+	git clone src dst &&
+	test_commit -C src --printf "src_content" file "src content\ncontent\n" &&
+	test_commit -C dst --append "dst_content" file "dst content" &&
+	echo "dirty" >>dst/file &&
+	git -C dst pull --rebase --autostash >actual 2>&1 &&
+	grep -q "Successfully rebased and updated refs/heads/main." actual &&
+	grep -q "Applied autostash." actual
+'
+
+test_expect_success 'git pull --rebase with rebase.autostash succeeds on non-ff' '
+	test_when_finished "rm -fr src dst actual" &&
+	git init src &&
+	test_commit -C src "initial" file "content" &&
+	git clone src dst &&
+	test_commit -C src --printf "src_content" file "src content\ncontent\n" &&
+	test_commit -C dst --append "dst_content" file "dst content" &&
+	echo "dirty" >>dst/file &&
+	test_config -C dst rebase.autostash true &&
+	git -C dst pull --rebase >actual 2>&1 &&
+	grep -q "Successfully rebased and updated refs/heads/main." actual &&
+	grep -q "Applied autostash." actual
+'
+
 test_done