Repository: huggingface/transformers
Pull request: fix(tokenization): check token.content for trie

# What does this PR do?

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Fixes https://github.com/huggingface/transformers/issues/39586


## Before submitting
- [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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## Who can review?

@ArthurZucker , @itazap 

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Models:

- text models: @ArthurZucker
- vision models: @amyeroberts, @qubvel
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Changed files:
filename: src/transformers/tokenization_utils.py
patch: @@ -589,7 +589,7 @@ def _add_tokens(self, new_tokens: Union[list[str], list[AddedToken]], special_to
 
     def _update_trie(self, unique_no_split_tokens: Optional[str] = []):
         for token in self._added_tokens_decoder.values():
-            if token not in self.tokens_trie._tokens:
+            if token.content not in self.tokens_trie._tokens:
                 self.tokens_trie.add(token.content)
         for token in unique_no_split_tokens:
             if token not in self.tokens_trie._tokens: