my @chars = /.(.)/sg;

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By any chance, are you trying to decode UTF-16 improperly? (Is every second character a NUL, "\0"?)

(I missed the "same character" bit.)

In reply to Re: Regex to only show 2nd character of the same character in a string by ikegami
in thread Regex to only show 2nd character of the same character in a string by wtritchie

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