libregexp-debugger-perl

Perl module to visually debug regexes in-place

Regexp::Debugger is a module that helps tame unruly regexes by providing live interactive run-time visualizations of any regex in a Perl code. The debugger allows one to track capture variables, follow recursive subpattern matches, set break-points within a regex match, and even step backwards through the matching process to work out exactly where things started going so horribly wrong. When you load this module, any regex in the same lexical scope will be visually (and interactively) debugged as it matches. In addition to the Perl module, the package also contains the module's commandline frontend rxrx.