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V2 core edit tool: port fuzzy matching strategies from V1 to improve edit reliability #32760
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The V2 core edit tool (packages/core/src/tool/edit.ts) only supports exact string matching. When an LLM produces oldString with slight whitespace, indentation, or escape differences, the edit fails with "Could not find oldString."
The V1 edit tool (packages/opencode/src/tool/edit.ts) has 9 proven fuzzy fallback strategies (line-trimmed, block-anchor, whitespace-normalized, indentation-flexible, escape-normalized, trimmed-boundary, context-aware, multi-occurrence) plus Levenshtein distance and a disproportionate-match safety guard.
A TODO at line 83 of the V2 core edit tool explicitly calls for this port.
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github-actions commentedon Jun 18, 2026
This issue doesn't fully meet our contributing guidelines.
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github-actions commentedon Jun 18, 2026
This issue has been automatically closed because it was not updated to meet our contributing guidelines within the 2-hour window.
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