dir.c: git-status --ignored: don't list empty directories as ignored

'git-status --ignored' lists empty untracked directories as ignored, even
though they don't have any ignored files.

When checking if a directory is already listed as untracked (i.e. shouldn't
be listed as ignored as well), don't assume that the directory has only
ignored files if it doesn't have untracked files, as the directory may be
empty.

Signed-off-by: Karsten Blees <blees@dcon.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

dir.c

@@ -1115,15 +1115,16 @@ static enum directory_treatment treat_directory(struct dir_struct *dir,
 
 	/*
 	 * We are looking for ignored files and our directory is not ignored,
-	 * check if it contains only ignored files
+	 * check if it contains untracked files (i.e. is listed as untracked)
 	 */
 	if ((dir->flags & DIR_SHOW_IGNORED) && !exclude) {
 		int ignored;
 		dir->flags &= ~DIR_SHOW_IGNORED;
 		ignored = read_directory_recursive(dir, dirname, len, 1, simplify);
 		dir->flags |= DIR_SHOW_IGNORED;
 
-		return ignored ? ignore_directory : show_directory;
+		if (ignored)
+			return ignore_directory;
 	}
 
 	if (!(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES))

t/t7061-wtstatus-ignore.sh

@@ -64,13 +64,35 @@ cat >expected <<\EOF
 ?? .gitignore
 ?? actual
 ?? expected
-!! untracked-ignored/
 EOF
 
-test_expect_success 'status untracked directory with ignored files with --ignore' '
+test_expect_success 'status empty untracked directory with --ignore' '
 	rm -rf ignored &&
 	mkdir untracked-ignored &&
 	mkdir untracked-ignored/test &&
+	git status --porcelain --ignored >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+EOF
+
+test_expect_success 'status empty untracked directory with --ignore -u' '
+	git status --porcelain --ignored -u >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+!! untracked-ignored/
+EOF
+
+test_expect_success 'status untracked directory with ignored files with --ignore' '
 	: >untracked-ignored/ignored &&
 	: >untracked-ignored/test/ignored &&
 	git status --porcelain --ignored >actual &&