//! Low-level text transformation engines.
//!
//! Provides the building blocks used by [`super::process_matcher::ProcessMatcher`]:
//! pre-compiled data tables ([`constants`]), single-character lookup engines
//! ([`single_char_matcher`]), multi-character substitution
//! ([`multi_char_matcher`]), and SIMD-accelerated character-skip utilities ([`simd_utils`]).
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