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Checker JSON breaks on German typographic quotes („…“) #20
Description
Drafts containing German quotation marks („…“) make the writing guide and pre-flight fail with unbalanced JSON braces, no JSON object found or multiple JSON objects found in LLM response.
When the model cites the draft, it replaces the closing “ (U+201C) with an unescaped ". That terminates the JSON string early. In one raw response, all five „ were kept, while every “ had become ". extractJSONObject rejects this correctly, because the output really is invalid JSON.
Adding a prompt rule to keep typographic quotes unchanged did not help (0/6 valid responses).
Repro (claude-sonnet-4-6): TestWritingGuideEval_TypographicQuotesStayValidJSON passes 1 of 6 runs.
Possible fixes: native structured output (JSON schema / forced tool use), or a tolerant repair of unescaped inner quotes when parsing.
Activity
hlubek commentedon Nov 2, 2026
Fixed by #26: pre-flight and the writing guide now request native structured output with a JSON schema that each provider enforces, so typographic quotes in a draft no longer break the response. Note: Ollama Cloud currently ignores response schemas (ollama/ollama#12362); use a local Ollama or another provider for these checks.