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    "headline": "A Preservation Instruction Made the Patch Smaller and Better",
    "slug": "a-preservation-instruction-made-the-patch-smaller-and-better",
    "dek": "Minimal-edit fidelity is measured separately from whether repaired code passes.",
    "summary": "Minimal-edit fidelity is measured separately from whether repaired code passes.",
    "body_text": "Across 400 controlled BigCodeBench corruptions, preservation prompting reduced excess edit distance from 0.195 to 0.131, cut added cognitive complexity 26.6% and raised Pass@1 by 2.3 points.",
    "why_it_matters": "Minimal-edit fidelity is measured separately from whether repaired code passes.",
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    "importance": 7,
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    "modified_at": "2026-09-04T09:00:00.000-04:00",
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    "tags": [
      "code repair",
      "minimal patches"
    ],
    "image_url": null,
    "corrections": []
  },
  "sources": [
    {
      "source_id": "source-2026-09-04-018",
      "title": "arXiv preprint 2609.04061",
      "publisher": "arXiv",
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      "published_at": "2026-09-03T12:36:05.000-04:00",
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  "publisher": {
    "name": "The Machine Press",
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    "description": "A daily newspaper for the age of artificial intelligence."
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    "title": "A Preservation Instruction Made the Patch Smaller and Better",
    "publisher": "The Machine Press",
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