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  1. or download this
    c:\@Work\Perl\monks>perl -wMstrict -le
    "my $s = 'foo\bar\[baz[x]x{x}x~x*x?x[]{}~*?';
    ...
    "
    'foo\bar\[baz[x]x{x}x~x*x?x[]{}~*?'
    'foo\bar\\[baz\[x\]x\{x\}x\~x\*x\?x\[\]\{\}\~\*\?'