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CodeTracked since May 19, 2026

Replace fuzzy stale-anchor recovery with deterministic corrected-anchor fallback

This change replaces hashline’s stale-anchor repair flow, which previously used fuzzy 3-way merge, with a deterministic two-tier recovery path: direct apply when anchors still match, then structured line-shift correction, and finally corrected-anchor retry feedback using explicit remapped hash anchors. The result is a safer edit workflow that avoids silently writing wrong content when files change after being read.

hashline recoverycomputeLineShiftMapHashlineMismatchErrorbuildCorrectedEdit

Signal Intelligence

Confidence Level94%
Worth Continued TrackingFinal score 80% with 1 evidence item.
Primary Impact Areas
hashline recoverycomputeLineShiftMapHashlineMismatchError

What Happened

  • This change replaces hashline’s stale-anchor repair flow, which previously used fuzzy 3-way merge, with a deterministic two-tier recovery path: direct apply when anchors still match, then structured line-shift correction, and finally corrected-anchor retry feedback using explicit remapped hash anchors. The result is a safer edit workflow that avoids silently writing wrong content when files change after being read.
  • This change replaces hashline’s stale-anchor repair flow, which previously used fuzzy 3-way merge, with a deterministic two-tier recovery path: direct apply when anchors still match, then structured line-shift correction, and finally corrected-anchor retry feedback using explicit remapped hash anchors. The result is a safer edit workflow that avoids silently writing wrong content when files change after being read.
  • 1 evidence item attached for review.

What is Different

Before

Scattered source updates, isolated context, and manual follow-up across multiple feeds.

Now

Introduced a deterministic stale-anchor recovery mechanism that first validates direct anchor matches, then applies a strict structured shift map against current file content, and only then falls back to corrected-anchor feedback with a rewritten edit; additionally hardened anchor parsing for malformed numeric/range payload forms to prevent ambiguous or confusing edit errors.

Why Track This

Why It Matters

Developers and operators relying on automated edits now avoid silent wrong-content merges when a file changes between read and write, so patch automation is safer and failures become recoverable instead of producing hidden corruption; technically, fuzzy matching is removed, pre-shift remapping is conservative and must be exact, and fallback now requires explicit corrected retry while full-file snapshots are refreshed after successful edits, so watch for fallback frequency and patch-mode escalations in rapidly changing files.

Impact

Developers and operators relying on automated edits now avoid silent wrong-content merges when a file changes between read and write, so patch automation is safer and failures become recoverable instead of producing hidden corruption; technically, fuzzy matching is removed, pre-shift remapping is conservative and must be exact, and fallback now requires explicit corrected retry while full-file snapshots are refreshed after successful edits, so watch for fallback frequency and patch-mode escalations in rapidly changing files.

What To Watch Next

  • Watch whether hashline recovery becomes a repeated pattern.
  • Track follow-up changes around AI Debugging and Error Localization.
  • Compare future signals against this evidence trail.
  • Re-check risk flags: increased_retry_loop_in_high_content_drift_files, conservative_shift_map_falls_back_to_retry_more_often.
Open Topic TimelineOpen Technical EventOpen Original Sourceincreased_retry_loop_in_high_content_drift_files / conservative_shift_map_falls_back_to_retry_more_often / cache_refresh_overhead_in_large_files / per_path_failure_escalation_needs_tuning

Supporting Evidence

GITHUB PULL REQUESTHigh Trust

can1357/oh-my-pi PR #1175: feat(coding-agent): tiered stale-anchor recovery with corrected-anchor feedback

oh-my-pi PR #1175 removes `recovery.ts` fuzzy merge fallback and adds `computeLineShiftMap`-driven pre-shift recovery plus `HashlineMismatchError.remaps`/`buildCorrectedEdit()` for immediate corrected retries.