Merge branch 'maint'

* maint:
  t/perf: add "trash directory" to .gitignore
  Add missing -z to git check-attr usage text for consistency with man page
  git-jump: ignore (custom) prefix in diff mode
  Documentation: indent-with-non-tab uses "equivalent tabs" not 8
  completion: add --no-edit to git-commit

builtin/check-attr.c

@@ -9,7 +9,7 @@ static int cached_attrs;
 static int stdin_paths;
 static const char * const check_attr_usage[] = {
 N_("git check-attr [-a | --all | attr...] [--] pathname..."),
-N_("git check-attr --stdin [-a | --all | attr...] < <list-of-paths>"),
+N_("git check-attr --stdin [-z] [-a | --all | attr...] < <list-of-paths>"),
 NULL
 };