punycoder 1.1.0

New Features

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).

Strict decoding now enforces RFC 5891 canonical A-label form: a decoded label must re-encode to itself. Non-canonical encodings (e.g. uppercase payloads) are rejected in strict mode while non-strict decoding stays lenient.
Initial release of punycoder package
Core punycode encoding and decoding functions (puny_encode(), puny_decode())
URL-aware processing functions (url_encode(), url_decode(), parse_url())
Domain validation and utility functions (is_punycode(), is_idn(), validate_domain())
Comprehensive test suite with RFC 3492 compliance testing
High-performance C++ backend with Rcpp
Vectorized operations for bulk processing
Robust error handling and validation
Complete documentation with vignettes