in reply to Re (tilly) 1: (Golf) Character windows
in thread (Golf) Character windows

You still have empty strings returned. Here's my best:
#23456789_123456789_123456789_123456789_123456789_123456789 $"='';@s=/./gs;@s=map"@s[($_<$s?0:$_-$s)..$_-1]",1..$s+$#s;

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Jeff[japhy]Pinyan: Perl, regex, and perl hacker.
s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;