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  1. or download this
    use utf8; $_="foo"; /\X/   # runs fine
  2. or download this
           WARNING: The implementation of Unicode support in Perl is
       incomplete.  See the perlunicode manpage for the exact
       details.
  3. or download this
               WARNING:  As of the 5.6.1 release, the implementation of Un
+icode
           support in Perl is incomplete, and continues to be highly e
+xperimental.