From b3f9e835a6403adcb03aa883b125e45f14ef05bc Mon Sep 17 00:00:00 2001
From: Lukas Burkhalter <lukas.burkhalter@proton.ch>
Date: Tue, 9 Jan 2024 17:05:09 +0100
Subject: [PATCH] Fix rune decode error check in utf8 checker

---
 internal/utf8.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/internal/utf8.go b/internal/utf8.go
index f59ea794..a49e453b 100644
--- a/internal/utf8.go
+++ b/internal/utf8.go
@@ -38,7 +38,7 @@ func (c *utf8Checker) check(p []byte) error {
 			continue
 		}
 		r, sizeRune := utf8.DecodeRune(p[pos:])
-		if r == utf8.RuneError {
+		if r == utf8.RuneError && sizeRune == 1 {
 			remaining := len(p) - pos
 			if remaining < maxSize {
 				// Could still be valid utf-8 on next check