very nice visualization. for a similar interactive regexp debugger in perl, see Regexp::Debugger: https://metacpan.org/module/Regexp::Debugger https://metacpan.

very nice visualization. for a similar interactive regexp debugger in perl, see Regexp::Debugger: https://metacpan.org/module/Regexp::Debugger https://metacpan.org/module/Regexp::Debugger