I may be wrong here, but if I am, I will learn something new :)

Could you not read in few MB's of the file (if it is big enough) and then unpack it and then test to see if the character matches 0x13?

Something like: 
open (my $fh, '<', 'file') or die "$!\n";
binmode($fh);

while(read $fh, my $char, 0x01){
    $buf = unpack('H*', $char);
    if ($buf =~ /13/){
    print "found 0x13\n"
    }
}

[download]
Contents of 'file': '.Eg5™eEfx`.'
#'.' = 0x13;

[download]
Im not up to par on unicode so I could be way off.

In reply to Re^2: How to find Unicode: 0x13 in File by james28909
in thread How to find Unicode: 0x13 in File by dirtdog

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