Implement #2457

src/inscription.rs

@@ -179,12 +179,10 @@ impl Inscription {
     let (txid, index) = value.split_at(Txid::LEN);
 
     if let Some(last) = index.last() {
-      if *last == 0 {
-        log::info!(
-          "parsing parent inscription index {:?} for {:?} with trailing zeroes",
-          index,
-          txid
-        );
+      // Accept fixed length encoding with 4 bytes (with potential trailing zeroes)
+      // or variable length (no trailing zeroes)
+      if index.len() != 4 && *last == 0 {
+        return None;
       }
     }
 
@@ -382,11 +380,25 @@ mod tests {
   }
 
   #[test]
-  fn inscription_with_parent_field_index_with_trailing_zeroes_has_no_parent() {
+  fn inscription_with_parent_field_index_with_trailing_zeroes_and_fixed_length_has_parent() {
     let mut parent = vec![1; 36];
 
     parent[35] = 0;
 
+    assert!(Inscription {
+      parent: Some(parent),
+      ..Default::default()
+    }
+    .parent()
+    .is_some());
+  }
+
+  #[test]
+  fn inscription_with_parent_field_index_with_trailing_zeroes_and_variable_length_has_no_parent() {
+    let mut parent = vec![1; 35];
+
+    parent[34] = 0;
+
     assert!(Inscription {
       parent: Some(parent),
       ..Default::default()