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fix: parse single-line fenced json responses #118

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fix: parse single-line fenced json responses #118

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6cd5bcb
fix: parse single-line fenced json responses
pollychen-lab Jul 14, 2026
b617b31
Merge branch 'main' into fix/issue-97-single-line-fenced-json
alphacrack Jul 15, 2026
efe279e
Merge branch 'main' into fix/issue-97-single-line-fenced-json
alphacrack Jul 16, 2026
3df0785
Merge branch 'main' into fix/issue-97-single-line-fenced-json
pollychen-lab Jul 16, 2026
eba2c40
Merge branch 'main' into fix/issue-97-single-line-fenced-json
pollychen-lab Jul 17, 2026
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2 changes: 1 addition & 1 deletion src/readme2demo/llm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -463,7 +463,7 @@ def complete(system: str, user: str, model: str, max_tokens: int = 8192) -> LLMR

def extract_json(text: str) -> str:
"""Pull the first JSON object out of a response (handles ```json fences)."""
fence = re.search(r"```(?:json)?\s*\n(.*?)```", text, re.DOTALL)
fence = re.search(r"```(?:json)?\s*(.*?)\s*```", text, re.DOTALL)
if fence:
return fence.group(1).strip()
start = text.find("{")
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6 changes: 6 additions & 0 deletions tests/test_llm_backend.py
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Expand Up @@ -321,6 +321,12 @@ def test_anthropic_default_model_matches_config():
assert llm.PROVIDERS["anthropic"].default_model == Config().model


def test_extract_json_accepts_single_line_fenced_json():
text = 'diagnostic {not json} ```json {"ok": true}```'

assert llm.extract_json(text) == '{"ok": true}'


# -- openai backend -----------------------------------------------------------------


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