NousResearch/hermes-agent

CLI stdout flush fix for Windows streaming output

Cluster 43238 · hermes cli. Data as of 2026-10-23 11:54 UTC

Nothing open on GitHub. Fix merged in #121601. Check it covers your case.

open issues

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items grouped

Known?: Yes. 5 related items grouped here, 1 issue already closed.
Fix event: A fix was merged to main in PR #121601. Check it covers your case. No release data is tracked.
Tracker: The maintainers' tracker marks this unresolved. That is separate from the fix event.
Still open: Nothing open on GitHub.

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These items address a missing sys.stdout.flush() call in the CLI's _cprint function, which causes streaming output to stall in Windows PowerShell. The fix adds explicit flush calls to all _cprint output paths.

Open issues0

No open issues.

Open PRs0

No open pull requests.

Fixes on record

Merged to main. A stamp counts the issues a fix is linked to.

#121601 fix(cli): stream answers after reasoning, no double-render of interrupted streamed replies, line-buffer headless stdout

merged to main

files: hermes_cli/cli_chat_turn_mixin.py, hermes_cli/cli_init_mixin.py, hermes_cli/cli_stream_mixin.py, hermes_logging.py, tests/hermes_cli/test_status_lines_held_during_stream_box.py, tests/hermes_cli/test_stream_delta_think_tag.py, tests/test_hermes_logging.py

3 PRs closed without merging

From the close comments: done elsewhere 1 · duplicate 1 · superseded by another PR 1

#43244 fix(cli): add sys.stdout.flush() to all _cprint output paths · superseded by another PR → #43356
#43351 fix(cli): add sys.stdout.flush() to all _cprint output paths · duplicate → #43356, #43238
#43356 fix(cli): add sys.stdout.flush() to all _cprint output paths · done elsewhere → ed805bf, #92281, #121601

Closed issues · 1

Closed#43238fix(cli): _cprint missing sys.stdout.flush() causes streaming output to stall on Windows PowerShell

How this cluster was grouped

Link evidence (structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
Pairwise link density 0.40: the share of item 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.

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At a glance

Subsystem: hermes cli
Merged PRs: #121601
Closed issues: 1
Attempts: 3 PRs closed without merging
Fix link checked: 24 Sep 2026

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