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grex is a regular expression generator that creates regex patterns from user-provided test cases. It implements DFA construction, Hopcroft's minimization algorithm, and Brzozowski's algebraic method to produce Perl-compatible regexes. The system serves dual purposes as a command-line utility and a library with bindings for Rust, Python, and WebAssembly. Key features include Unicode grapheme handling, configurable character class conversions (digits/whitespace/word), case insensitivity, repetition detection, and syntax highlighting. The architecture separates core regex building logic from CLI, Python, and WASM extension points, enabling reuse across multiple contexts.
RATING:
MAINT: maintained
DRIFT: low