read perlunitut: Unicode in Perl#I/O flow (the actual 5 minute tutorial) and see File::BOM and Encode::Detective/Encode::Guess and try 
use autodie;
open my($fh), '<:via(File::BOM)', $filename ;

In reply to Re: using win32::guitest in non english OS by Anonymous Monk
in thread using win32::guitest in non english OS by cstar

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