Docs: Explain why we have return "" in PostProcessor._last_non_punc_token_pos

Author: strangetom

ingredient_parser/en/postprocess.py

@@ -568,6 +568,9 @@ def _last_non_punc_token_pos(self, token_idx: list[int]) -> str:
 
             return self.pos_tags[idx]
 
+        # Return empty string so we don't try to merge this with the next name.
+        # This should never occur because self._postprocess_indices is called before
+        # this and that function skips over any potential name that is all punctuation.
         return ""
 
     def _postprocess_indices(