From 1e67f6c0fbb221a42cf4ecc829334f5db795e798 Mon Sep 17 00:00:00 2001
From: Peter Gerber <peter@arbitrary.ch>
Date: Sat, 2 Dec 2023 13:25:21 +0000
Subject: [PATCH] Tolerate hidden, binary files in tests/

Avoid scanning temporary files created by editors like
this one created by Vim:

---- old_test_headers stdout ----
thread 'old_test_headers' panicked at tests/headers.rs:19:74:
tests/ui/.regex.rs.swp: stream did not contain valid UTF-8
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
---
 tests/headers.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tests/headers.rs b/tests/headers.rs
index 7eec9a9cdd2..d1f986ef526 100644
--- a/tests/headers.rs
+++ b/tests/headers.rs
@@ -12,7 +12,12 @@ fn old_test_headers() {
 
     for entry in WalkDir::new("tests") {
         let entry = entry.unwrap();
-        if !entry.file_type().is_file() {
+        let is_hidden_file = entry
+            .file_name()
+            .to_str()
+            .expect("non-UTF-8 file name")
+            .starts_with('.');
+        if is_hidden_file || !entry.file_type().is_file() {
             continue;
         }