update: Answer despoiled in the spirit of quizing...

[0-z] matches all ASCII characters between ordinals 48 and 122. This includes alot of symbols that aren't in the set matched by \w, which only includes letters, numbers, and the underscore [a-zA-Z0-9_].

   MeowChow                                   
               s aamecha.s a..a\u$&owag.print