Developer's AI Attribution Filter Deletes Legitimate Commits Mentioning 'Claude Code'

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A developer building a Git hook system that auto-generates commit messages using Claude discovered a persistent flaw in their AI attribution filter. The filter, designed to strip AI-credit footers from commits, uses a bare phrase match on 'Claude Code' with no requirement that the phrase appear in an attribution context. Because the project itself wraps the Claude Code CLI tool, routine commit messages describing that work — such as bug fixes or documentation updates — are incorrectly flagged and erased. Since the system prompt enforces single-line output, a false positive wipes the entire commit message, leaving an empty string indistinguishable from a hook failure. The developer identified the issue while auditing a separate bug and noted the filter logic exists in two files, creating an additional drift risk.

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