acostanzo/strip-trailers

/commventional:strip-trailers

Engineering-ownership trailer-stripping capability. Mirrors the perl substitution chain that commventional v1.x's PreToolUse hook (hooks/enforce-ownership.sh) shipped, preserved as a consumer-invocable skill per ADR-006 §1 (capabilities, not automation).

The capability is read-only and idempotent: running twice on the same input produces identical output, and the only write is to stdout.

Usage

Run the canonical script and emit its stdout verbatim:

bash "${CLAUDE_PLUGIN_ROOT}/bin/strip-trailers.sh" --text "<text>"

Or from stdin (for piping cleaned output into another tool):

printf '%s\n' "<text>" | bash "${CLAUDE_PLUGIN_ROOT}/bin/strip-trailers.sh"

Parse $ARGUMENTS for --text "<text>" and pass it through to the script. If $ARGUMENTS is empty, read the text the user wants cleaned (their next message, the contents of a file they named, or stdin if invoked programmatically).

Emit the script's stdout verbatim — it is the source of truth for the cleaned output. Do not re-format, do not add commentary.

What it strips

• Co-Authored-By: trailers — case-insensitive on each word's first letter (Co-Authored-By:, co-authored-by:, Co-authored-by:, etc.)
• Generated with/by Claude footers — case-insensitive (Generated with Claude Code, generated by claude, etc.)

The substitution preserves trailing quote characters (" / ' / \) when attribution appears inline in a shell-quoted command string, matching v1.x's behaviour exactly.

Composition

This is a capability skill per ADR-006 §1. The consumer composes the trigger:

• Wire it into your own commit-msg / pre-commit hook — call this script from .git/hooks/.
• Wire it into your own Claude Code PreToolUse hook — write a ~/.claude/settings.json entry that pipes the bash command payload through this script. The /commventional:install-trailer-stripper helper writes that wiring on demand.
• Run it on demand — invoke /commventional:strip-trailers --text "..." whenever you want a one-shot clean-up.

Reference

• bin/strip-trailers.sh — the script this skill invokes.
• test-fixtures/strip-trailers/cases.json — fixture set proving byte-equivalence with v1.x's enforce-ownership.sh perl chain.
• ADR-006 §1 — capability/trigger boundary that motivates this skill's existence.