binary alnum symbol by ais523

#!perl -p\x0d
$_=/[~-\xc3\xbf]/?"(bin)\x0d
":/^(\w|\d| )*$/i?"(alnum)\x0d
":/[a-z]|\d| /i?"normal\x0d
":"(sym)\x0d
";

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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