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loop/docs/commit-tooling.md
Slyghtning eb63b0b4fe
build: add commit message tooling 
Add a repository-local tool to lint, format, and safely reword commit
messages. Preserve markdown lists, quotes, code blocks, and trailers
while enforcing subject and body width limits.

Expose linting, formatting, and rewording through Make targets and
document the supported workflows. Run the linter in CI for pull request
and push commit ranges so malformed messages are caught before merging.
2026-07-22 14:27:25 +02:00

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Commit Message Tooling

Use scripts/commit_message.py to lint, format, and safely reword commit messages. The script enforces subject/body wrapping (69/72), keeps real newlines, and preserves markdown-like body structure (lists, quotes, fenced blocks, trailers).

Common Workflows

# Lint the current commit message
make commitmsg-lint commit=HEAD

# Lint a commit range
make commitmsg-lint range=upstream/master..HEAD

# Format a message file in place
make commitmsg-fmt file=/tmp/msg inplace=1

# Reword a commit from formatted output
make commitmsg-reword commit=<sha>

# Preview a reword without rewriting history
make commitmsg-reword commit=<sha> dryrun=1

Literal Newlines

If a message was created with literal \n sequences, use decode=1 with commitmsg-fmt or commitmsg-reword to convert them to real line breaks.