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  "title": "Add support for `>>` append redirection in external commands",
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  "debrief": "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.",
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  "body_excerpt": "This PR implements support for `>>` (append) redirection operators in external commands, matching the behavior of standard shells like bash.\n\n## Changes Made\n\n- **Added new regex patterns** for append redirection:\n  - `STDOUT_APPEND`: matches `>>file` and `1>>file` patterns\n  - `STDERR_APPEND`: matc",
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  "reviewer_excerpt": "This change does not look like it will work properly if the output/redirect target filename itself starts with \">>:\". Could you check?",
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