host_normalize() converts hostnames to their canonical
comparison form under a pinned UTS-46 profile (non-transitional,
UseSTD3ASCIIRules, CheckHyphens,
CheckBidi, CheckJoiners, NFC, DNS length
verification), returning lowercase ASCII A-labels or NA for
invalid input. The mapping/NFC/validation pipeline is implemented
in-tree over vendored Unicode 16.0.0 data, so behavior is independent of
whether libidn2 is present.normalization_profile_info() exposes the
machine-readable profile identity (profile,
unicode_version, and the profile parameters) for downstream
reproducibility keys.First CRAN release.
puny_decode() (and the URL/domain decoders) now bound
label length in both strict and non-strict mode. A crafted oversized
xn-- label previously drove the fallback decoder into
quadratic time with unbounded allocation; oversized labels are now
rejected promptly (error in strict mode, NA in
non-strict).puny_encode(), puny_decode())url_encode(),
url_decode(), parse_url())is_punycode(),
is_idn(), validate_domain())
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