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  1. or download this
    use YAPE::Regex::Explain;
print YAPE::Regex::Explain->new('[^\w\s]+')->explain();
  2. or download this
    [^\w\s]+                 any character except: word characters (a-
                         z, A-Z, 0-9, _), whitespace (\n, \r, \t,
                         \f, and " ") (1 or more times (matching
                         the most amount possible))