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The Patch Window: Let a Model Refactor Only Lines Your Tests Already Cover

The smallest safe change is a bounded change. Bounds beat instructions. Give the model a line window, not a file. Most refactor prompts fail for one reason. They hand over too much surface. A model that can edit any line will edit lines nobody verified. The fix is mechanical. Map the seams. Measure…

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  1. 2026-11-08 14:28 · DEV Community — AI
    The Patch Window: Let a Model Refactor Only Lines Your Tests Already Cover

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