PCRE is a widely used Unicode-compatible regular expression engine. It implements Perl5 regex syntax and semantics, some Python, .NET and Onigurama extensions. It uses just-in-time compilation, has consistent escaping rules, and allows for recursion, assertions and conditional patterns or complex subroutines and callouts, thus goes far beyond classic regular expressions.
minor feature: Another release with a few enhancements as well as and tidies. The Main new features are: 1. There is now some support for matching in invalid UTF strings. 2. Non-atomic positive lookarounds are implemented in the pcre2_match(). Interpreter, but not in JIT. 3. Added two new functions: pcre2_get_match_data_size() and. Pcre2_maketables_free(). 4. Upgraded to Unicode 12.1.0.