fix(patch): add idempotency guard to prevent duplicate content loops#18614
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liuhao1024 wants to merge 1 commit into
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fix(patch): add idempotency guard to prevent duplicate content loops#18614liuhao1024 wants to merge 1 commit into
liuhao1024 wants to merge 1 commit into
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When the agent retries a patch without re-reading the file, fuzzy matching may find the previously-applied replacement and re-apply it, creating duplicate content blocks. Add a guard that checks whether the matched region already equals new_string before writing. Fixes NousResearch#18426
Cyrene963
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May 3, 2026
Community PRs applied: - NousResearch#18596: Enable secret redaction by default (SECURITY) - NousResearch#18650: Sanitize malformed tool messages + auto-recover on API 400 - NousResearch#18607: Emergency compression before max_iterations exhaustion - NousResearch#18603: Compression fallback to main model on 413 rate limit - NousResearch#18638: Pass threshold_percent on model switch - NousResearch#18663: Strip extra_content from tool_calls for strict APIs - NousResearch#18618: Forward explicit_api_key to OpenRouter - NousResearch#18632: Show cache tokens in /insights breakdown - NousResearch#18614: Add idempotency guard for patch duplicate loops - NousResearch#18600: Raise ValueError when HERMES_HOME unset in profile mode - NousResearch#18616: Allow ZWJ emoji in context files - NousResearch#18582: Reload .env on /restart - NousResearch#18547: Stabilize system prompt prefix for KV cache reuse - NousResearch#18692: Strip FTS5 operators from session search truncation terms Fix: Add order_by_last_active=True to list_sessions_rich call (pre-existing commit 142b4bf code sync)
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What does this PR do?
Add an idempotency guard to
fuzzy_find_and_replacethat prevents the patch tool from creating duplicate content when the same patch is applied to an already-patched file.Related Issue
N/A
Type of Change
Changes Made
How to Test
pytest tests/ -q— all tests should passChecklist
Code
fix(scope):,feat(scope):, etc.)pytest tests/ -qand all tests passDocumentation & Housekeeping
docs/, docstrings) — or N/Acli-config.yaml.exampleif I added/changed config keys — or N/ACONTRIBUTING.mdorAGENTS.mdif I changed architecture and workflows — or N/A