My notes for project Breccia

    regular-expression pattern matching
        / Based on the standard of Perl, not PCRE.  No standard in itself,
          PCRE is merely C’s implementation of the Perl standard.
        - The pattern language must include just those formal elements of Perl supported (whether
          directly or through a translational preprocessor) by the regular-expression engines
          of the major programming languages and text editors.
            : see https://stackoverflow.com/a/1448213/2402790
        - My proxies for the latter are Java and Emacs.