Merge branch 'en/dir-traversal'

"git clean" and "git ls-files -i" had confusion around working on
or showing ignored paths inside an ignored directory, which has
been corrected.

* en/dir-traversal:
  dir: introduce readdir_skip_dot_and_dotdot() helper
  dir: update stale description of treat_directory()
  dir: traverse into untracked directories if they may have ignored subfiles
  dir: avoid unnecessary traversal into ignored directory
  t3001, t7300: add testcase showcasing missed directory traversal
  t7300: add testcase showing unnecessary traversal into ignored directory
  ls-files: error out on -i unless -o or -c are specified
  dir: report number of visited directories and paths with trace2
  dir: convert trace calls to trace2 equivalents

1 files changed, 2 insertions, 3 deletions

diff --git a/diff-no-index.c b/diff-no-index.c
index 308922e2b3..9a8b09346b 100644
--- a/diff-no-index.c
+++ b/diff-no-index.c
@@ -26,9 +26,8 @@ static int read_directory_contents(const char *path, struct string_list *list)
 	if (!(dir = opendir(path)))
 		return error("Could not open directory %s", path);
 
-	while ((e = readdir(dir)))
-		if (!is_dot_or_dotdot(e->d_name))
-			string_list_insert(list, e->d_name);
+	while ((e = readdir_skip_dot_and_dotdot(dir)))
+		string_list_insert(list, e->d_name);
 
 	closedir(dir);
 	return 0;