From ebb4b7af3a78f1e80078fbd1589c825edb41e0ab Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Wed, 5 Apr 2023 19:06:05 -0700
Subject: [PATCH] Fix deserialization of tag !<%21>

---
 src/de.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/de.rs b/src/de.rs
index 4b8f4761..e73de650 100644
--- a/src/de.rs
+++ b/src/de.rs
@@ -1191,9 +1191,12 @@ fn invalid_type(event: &Event, exp: &dyn Expected) -> Error {
 }
 
 fn parse_tag(libyaml_tag: &Option<Tag>) -> Option<&str> {
-    let bytes: &[u8] = libyaml_tag.as_ref()?;
+    let mut bytes: &[u8] = libyaml_tag.as_ref()?;
     if let (b'!', rest) = bytes.split_first()? {
-        str::from_utf8(rest).ok()
+        if !rest.is_empty() {
+            bytes = rest;
+        }
+        str::from_utf8(bytes).ok()
     } else {
         None
     }