The simplest way to fix the problem is to use utf8::all: 
#!/usr/bin/perl -l

use strict;
use warnings;
use utf8::all;

print "\xC4 and \x{0394} look different";

[download]

Returns:

Ä and Δ look different

In reply to Re: a new example by Khen1950fx
in thread a new example by Raymond

Title:
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