Decode percent-encoded unreserved characters during normalization - #151
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Decode percent-encoded unreserved characters during normalization#151gaoflow wants to merge 1 commit into
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RFC 3986 Section 6.2.2.2 requires percent-encodings of unreserved characters to be decoded. normalize_percent_characters() only upper-cased them, so normalized_equality() returned False for URIs the RFC treats as equivalent. Reserved and non-ASCII octets stay encoded.
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normalize_percent_characters()only upper-cases percent-triples; RFC 3986 §6.2.2.2 also requires decoding triples of unreserved characters (ALPHA / DIGIT / "-" / "." / "_" / "~"). Because the decode step is missing, the library's own equality predicate returns the wrong answer for URIs the RFC treats as equivalent:The fix decodes unreserved triples after the existing upper-case pass. Reserved octets (
%2F,%21, …) and non-ASCII octets (%DF) stay encoded. One visible consequence:%2Ein paths now decodes before dot-segment removal, so/a/%2E%2E/bnormalizes to/bper the RFC's ordering.The module's
UNRESERVED_CHARSconstant also includes!(a sub-delimiter), so the decode set is defined directly from RFC 3986 §2.3.Tests enumerate all 256 octets across userinfo, path, query, and fragment, plus idempotence and
normalized_equality.