From ba2416c126de67f6372cc293ccb2feb633d235f9 Mon Sep 17 00:00:00 2001
From: EmperorBale <hswhsw490@gmail.com>
Date: Thu, 14 Jul 2022 19:40:33 -0700
Subject: [PATCH] core: Multibyte codepoints cannot be in ascii range

---
 wstr/src/utils.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/wstr/src/utils.rs b/wstr/src/utils.rs
index 367a72c53..eba451996 100644
--- a/wstr/src/utils.rs
+++ b/wstr/src/utils.rs
@@ -147,7 +147,10 @@ impl<'a> Iterator for AvmUtf8Decoder<'a> {
                         ch <<= 6;
                         ch |= (*b & (u8::MAX >> 2)) as u32;
                     }
-                    if !fail {
+                    if ch <= 128 {
+                        self.index += 1;
+                        ch = first as u32;
+                    } else if !fail {
                         self.index += mb_count as usize + 1;
                     }
                 }