You never decode the incoming data, so Perl defaults to Latin-1. Since MODIFIER LETTER GLOTTAL STOP is not a character from the Latin-1 range, it will never match. Try adding these two lines at the top of your script: 
binmode STDIN, ":encoding(UTF-8)";
binmode STDOUT, ":encoding(UTF-8)";

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In reply to Re: Regular Expressions on Unicode by moritz
in thread Regular Expressions on Unicode by larimar123

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