# NousResearch/hermes-agent · Terminal fence markers leaking into file read content

## Open now

- Nothing open on GitHub.

The members concern HERMES_FENCE terminal fence markers appearing in file content via ShellFileOperations, reportedly corrupting source files. Two members are pull requests (or similarly titled items) proposing to strip these leaked fences from reads, and one is a bug report describing the problem.

## TL;DR

- 3 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 1 PR(s) closed without merging.
- A fix was merged to main in PR #19426. Verify it addresses your case.
- **Recommended:** read PR #19426 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `resolved` · deciding PR(s): `pr-19426`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.67`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Closed / duplicate issues

- #5400: \[Bug\]: HERMES_FENCE markers leak into file content via ShellFileOperations — corrupts source files silently

## Prior & competing PRs

- **#19426: fix(file): strip leaked terminal fences from reads**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `tests/tools/test_file_operations.py`, `tools/file_operations.py`
- **#19266: fix(file): strip leaked terminal fences from reads**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#19426`

## Fix status

- Merged to main in PR #19426 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-05-03`.
- Subsystem: `environments`