Merge branch 'pk/status-of-uncloned-submodule'

The way "git submodule status" reports an initialized but not yet
populated submodule has not been reimplemented correctly when a
part of the "git submodule" command was rewritten in C, which has
been corrected.

* pk/status-of-uncloned-submodule:
  t7400: testcase for submodule status on unregistered inner git repos
  submodule: fix status of initialized but not cloned submodules
  t7400: add a testcase for submodule status on empty dirs

Author: gitster

builtin/submodule--helper.c

@@ -782,6 +782,8 @@ static void status_submodule(const char *path, const struct object_id *ce_oid,
 	struct argv_array diff_files_args = ARGV_ARRAY_INIT;
 	struct rev_info rev;
 	int diff_files_result;
+	struct strbuf buf = STRBUF_INIT;
+	const char *git_dir;
 
 	if (!submodule_from_path(the_repository, &null_oid, path))
 		die(_("no submodule mapping found in .gitmodules for path '%s'"),
@@ -794,10 +796,18 @@ static void status_submodule(const char *path, const struct object_id *ce_oid,
 		goto cleanup;
 	}
 
-	if (!is_submodule_active(the_repository, path)) {
+	strbuf_addf(&buf, "%s/.git", path);
+	git_dir = read_gitfile(buf.buf);
+	if (!git_dir)
+		git_dir = buf.buf;
+
+	if (!is_submodule_active(the_repository, path) ||
+	    !is_git_directory(git_dir)) {
 		print_status(flags, '-', path, ce_oid, displaypath);
+		strbuf_release(&buf);
 		goto cleanup;
 	}
+	strbuf_release(&buf);
 
 	argv_array_pushl(&diff_files_args, "diff-files",
 			 "--ignore-submodules=dirty", "--quiet", "--",

t/t7400-submodule-basic.sh

@@ -55,6 +55,21 @@ test_expect_success 'add aborts on repository with no commits' '
 	test_i18ncmp expect actual
 '
 
+test_expect_success 'status should ignore inner git repo when not added' '
+	rm -fr inner &&
+	mkdir inner &&
+	(
+		cd inner &&
+		git init &&
+		>t &&
+		git add t &&
+		git commit -m "initial"
+	) &&
+	test_must_fail git submodule status inner 2>output.err &&
+	rm -fr inner &&
+	test_i18ngrep "^error: .*did not match any file(s) known to git" output.err
+'
+
 test_expect_success 'setup - repository in init subdirectory' '
 	mkdir init &&
 	(
@@ -412,6 +427,14 @@ test_expect_success 'init should register submodule url in .git/config' '
 	test_cmp expect url
 '
 
+test_expect_success 'status should still be "missing" after initializing' '
+	rm -fr init &&
+	mkdir init &&
+	git submodule status >lines &&
+	rm -fr init &&
+	grep "^-$rev1" lines
+'
+
 test_failure_with_unknown_submodule () {
 	test_must_fail git submodule $1 no-such-submodule 2>output.err &&
 	test_i18ngrep "^error: .*no-such-submodule" output.err