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fix: strip <thought> tags from Gemma 4 responses in _strip_think_blocks

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Gemma 4 (26B/31B) uses <thought>...</thought> to wrap its reasoning
output. This tag was not included in the existing list of reasoning tag
variants stripped by _strip_think_blocks(), causing raw thinking blocks
to leak into the visible response.

Added a new re.sub() line for <thought> and extended the cleanup regex
to include 'thought' alongside the existing variants.

Fixes #6148
This commit is contained in:
Chen Chia Yang 2026-04-08 20:26:05 +08:00 • committed by Teknium
parent f295b17d92
commit a372c14fc5
1 changed files with 3 additions and 2 deletions
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5
run_agent.py
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@ -1872,12 +1872,13 @@ class AIAgent:
if not content:
return ""
# Strip all reasoning tag variants: <think>, <thinking>, <THINKING>,
# <reasoning>, <REASONING_SCRATCHPAD>
# <reasoning>, <REASONING_SCRATCHPAD>, <thought> (Gemma 4)
content = re.sub(r'<think>.*?</think>', '', content, flags=re.DOTALL)
content = re.sub(r'<thinking>.*?</thinking>', '', content, flags=re.DOTALL | re.IGNORECASE)
content = re.sub(r'<reasoning>.*?</reasoning>', '', content, flags=re.DOTALL)
content = re.sub(r'<REASONING_SCRATCHPAD>.*?</REASONING_SCRATCHPAD>', '', content, flags=re.DOTALL)
content = re.sub(r'</?(?:think|thinking|reasoning|REASONING_SCRATCHPAD)>\s*', '', content, flags=re.IGNORECASE)
content = re.sub(r'<thought>.*?</thought>', '', content, flags=re.DOTALL | re.IGNORECASE)
content = re.sub(r'</?(?:think|thinking|reasoning|thought|REASONING_SCRATCHPAD)>\s*', '', content, flags=re.IGNORECASE)
return content
def _looks_like_codex_intermediate_ack(