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fix: harden CSV formulas behind Unicode characters - #1836

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Oct 27, 2026
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nijel merged 1 commit into
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@nijel nijel commented Oct 27, 2026

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Recognize formula signs after leading Unicode controls, spacing, marks, and common invisible characters. Include compatibility forms of formula signs to keep unusual CSV cells guarded without changing their contents.

Add regression coverage for CSV headers, keys, values, and stream types, and clarify the output guarantee in the threat model.

Recognize formula signs after leading Unicode controls, spacing, marks, and common invisible characters. Include compatibility forms of formula signs to keep unusual CSV cells guarded without changing their contents.

Add regression coverage for CSV headers, keys, values, and stream types, and clarify the output guarantee in the threat model.
@nijel nijel self-assigned this Oct 27, 2026
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📝 Code Review ✅ Completed 2026-10-27T10:19:26.698649Z 3217272 PR opened
🔒 Security Review ✅ Completed 2026-10-27T10:21:13.270466Z 3217272 PR opened
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@nijel
nijel enabled auto-merge (rebase) October 27, 2026 10:29
@nijel
nijel merged commit 842265a into main Oct 27, 2026
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@nijel
nijel deleted the csv branch October 27, 2026 10:37
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