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Functional Scars: From Repeated Agent Errors to Runtime Controls

On Windows, Claude Code's Bash tool halves runs of backslashes before bash reads the command, except runs right before a double quote. Our coding agent kept breaking Python files it patched through shell heredocs, even with the trap written into its memory. This walkthrough turns that correction into a hook, then measures what changed across 102,298 shell calls, including what the block cost.


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@ml-systems-publisher ml-systems-publisher Bot added the blog-submission Post submitted via the /write portal label Oct 5, 2026
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Victor Del Puerto

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