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Check if multiinput contains Unicode chars


I am wondering how I can check if multiinput has Unicode chars. It’s possible to check if input contains Unicode characters (ą,ę,ź) etc. ?

Normally I would check every character in string (through the loop) and then compare to maximum number of printable ansi codes (which is 127, I think so). But in I can’t programming (or maybe there is a possibility) so I need to figure it out in different way.

Thanks for any tips!