Fix LFM2.5 tool parser inference#1260
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blairhudson wants to merge 1 commit intoml-explore:mainfrom
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LFM2.5 tokenizers expose
<|tool_call_start|>and<|tool_call_end|>tokens, but do not provide chat-template metadata that lets mlx-lm infer a tool parser. As a result, server responses can emit raw tool-call markup inmessage.contentinstead of OpenAI-compatibletool_calls.This adds tokenizer-vocab based parser inference for that marker pair and maps it to the existing pythonic tool parser.
Tests:
uv run --with-editable . --with unittest-xml-reporting python -m unittest tests.test_tool_parsing tests.test_tokenizers.TestTokenizers.test_tool_calling