fix: wire --regex-pattern through the CLI (#175)#180
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Distilled from un33k/python-slugify#180: an argparse option whose dest is never read — the flag parses, then silently vanishes. slugify defined --regex-pattern but slugify_params forwarded every namespace field except args.regex_pattern. Low-FP by construction (default tier): - only fires when a sibling dest on the same namespace IS read in-file, so consumption is local and the gap is a genuine oversight (not cross-file use); - a "namespace" is a parse_args() result or a param annotated argparse.Namespace — definitions-only files (e.g. httpie's definition.py) have neither and stay silent; - bails on vars()/getattr/setattr/hasattr/__dict__/parse_known_args namespaces (dests could be consumed by string); - skips help/version actions and dynamic/SUPPRESS dests. Validated: fires exactly once (regex_pattern) on real slugify master; 0 findings across 10 real argparse CLIs (black/flask/pip/aws/pytest/cpython/ youtube-dl/httpie/tenacity/mitmproxy) — httpie went 46->0 after restricting reads to actual namespace variables. 51 tests pass, ruff clean, self-clean. Co-Authored-By: claude-flow <ruv@ruv.net>
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Fixes #175.
Problem
The CLI defines
--regex-patterninparse_args, butslugify_params()never passesregex_patterntoslugify()— every other argument is wired except that one. So the flag is silently dropped:(@peter-bloomfield reported it; @jdevera confirmed the missing wiring.)
Fix
Add
regex_pattern=args.regex_patternto theslugify_params()dict.argparsealready defaults it toNonewhen the flag is absent, which matchesslugify()'s own default, so existing behavior is unchanged.Tests
regex_patterntoTestCommandParams.DEFAULTSsotest_defaultsnow covers it.test_regex_pattern: the flag flows through to params.test_regex_pattern_end_to_end: reproduces the exact example from --regex-pattern option ignored by CLI #175 and asserts___this-is-a-test___.Both new tests fail on the current
main(KeyError / wrong output) and pass with the fix. Full suite: 84 passed.