From b5c2d858374c082b79f0f0cb5a63a93d11b71766 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Thu, 23 Mar 2023 12:59:16 +0530
Subject: [PATCH] Fix diffing dirs

---
 tools/cmd/diff/collect.go | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/tools/cmd/diff/collect.go b/tools/cmd/diff/collect.go
index 74ad27a40..171f424dc 100644
--- a/tools/cmd/diff/collect.go
+++ b/tools/cmd/diff/collect.go
@@ -253,6 +253,9 @@ func walk(base string, names *utils.Set[string], pmap map[string]string) error {
 			}
 			return nil
 		}
+		if d.IsDir() {
+			return nil
+		}
 		path, err = filepath.Abs(path)
 		if err != nil {
 			return err
@@ -261,9 +264,11 @@ func walk(base string, names *utils.Set[string], pmap map[string]string) error {
 		if err != nil {
 			return err
 		}
-		path_name_map[path] = name
-		names.Add(name)
-		pmap[name] = path
+		if name != "." {
+			path_name_map[path] = name
+			names.Add(name)
+			pmap[name] = path
+		}
 		return nil
 	})
 }