Your Visual Regex Explorer link says:
Uses YAPE::Regex::Explain to give detailed explanations of what any valid regex. (As long as it doesn't use any of the extensions added in perl 5.12 or later. That's a limitation of Y::R::E. If it gets updated, then so will VRegExp.)

YAPE::Regex::Explain says:

There is no support for regular expression syntax added after Perl version 5.6, particularly any constructs added in 5.10.

In reply to Re^3: The Perl Regex Tester by toolic
in thread The Perl Regex Tester by davido

Title:
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