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macOS git's regex library does not support `\s`, so `git config --get-regexp` never matched an alias for `commit --amend` and amendment? returned false. Use the POSIX `[[:space:]]` class, which both git and Ruby understand. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Wo4FerFK9aaxrGrmVE9ncZ
apiology
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October 21, 2026 20:57
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Claude: This PR was written by Claude Code on behalf of @apiology.
Problem
On macOS, amending through a git alias isn't recognized as an amend:
Hooks that treat amends specially (e.g. including the previous commit's changes) misbehave for macOS users who amend via an alias, and the four
#amendment?alias specs fail there.Solution
Spell the pattern with the POSIX
[[:space:]]class, which macOS git, Linux git and Ruby's regex engine all understand.