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Peter BarkerandClaude Opus 4.8
f490ad3400
Add Tools/scripts/allowed_subsystems.py, the single source of truth for which subsystem prefixes are permitted in commit messages and which subsystem(s) a changed file may belong to. A subsystem is allowed if it is a directory under libraries/ (computed dynamically), a libraries/ directory created by the commit itself, or one of the curated non-library extras (vehicles, Tools, autotest, waf, hwdef, modules, a few common class prefixes, ...). subsystems_for_path() returns an ordered list of candidate subsystems for a path, since some files are conventionally committed under more than one name (an autotest under autotest or Tools; a ChibiOS hwdef file under hwdef or AP_HAL_ChibiOS). suggest_subsystem() offers the closest allowed name for a mistyped prefix. The functionality is exposed as an AllowedSubsystems object; running the file directly prints every valid subsystem name. It is consumed by check_branch_conventions.py, the git-subsystems-split tool and the sample pre-commit hook. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>