Flight Log / tomhrr/cosh #173

Add support for `>>` append redirection in external commands — a GitHub Copilot (GitHub) bot flight

The GitHub Copilot bot (GitHub) opened this pull request in tomhrr/cosh on Jun 18, 2025; a burn — closed unmerged after human review: +1,802 −1,285, 18 files, 0 reviews.

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Lines
+1,802 −1,285
Files
18
Commits
11
Reviews
0
To merge
—
Task
feat

Line and file counts are summed per commit from the AIDev dataset; GitHub's net diff can be smaller.

GitHub Copilot attempts to add >> append redirection to external commands in tomhrr/cosh. The change spans 18 files, 11 commits, 1802 additions and 1285 deletions. Zero reviews and zero change requests were recorded. The reviewer questioned behavior when a redirect target starts with ">>:". The pull request closed unmerged after human review, a burn.

“This change does not look like it will work properly if the output/redirect target filename itself starts with ">>:". Could you check?”

— from the review (source)

From the pull request description

This PR implements support for `>>` (append) redirection operators in external commands, matching the behavior of standard shells like bash. ## Changes Made - **Added new regex patterns** for append redirection: - `STDOUT_APPEND`: matches `>>file` and `1>>file` patterns - `STDERR_APPEND`: matc…

Excerpt (first 300 characters) — the full description is on GitHub.

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Flight timeline

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Cite this flight: AgentRiders Flight Log, tomhrr/cosh#173, record updated Nov 3, 2026, https://agentriders.com/logs/tomhrr/cosh/173/

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