use strict;
use warnings;

use Encode "decode";
binmode STDOUT, ":utf8";

my @enc = grep { !m/^mime/i } Encode->encodings (":all");
my $c = pack "H*", shift;
foreach my $e (@enc) {
    my $x = eval { decode ($e, $c) };
    !defined $x || $x =~ m/^(?:$|\x{fffd})/ and next;
    printf "  %-30s %s\n", $e, $x;
    }

##</code><code>##

$ find_enc d7e4 | grep ×ä
  cp1250                         ×ä
  cp1252                         ×ä
  cp1254                         ×ä
  cp1257                         ×ä
  cp1258                         ×ä
  iso-8859-1                     ×ä
  iso-8859-13                    ×ä
  iso-8859-15                    ×ä
  iso-8859-2                     ×ä
  iso-8859-3                     ×ä
  iso-8859-4                     ×ä
  iso-8859-9                     ×ä
  UTF-7                          ×ä
$

##</code><code>##

$ find_enc d7e4f0 | grep ×ä&#273;
  cp1250                         ×ä&#273;
  cp1258                         ×ä&#273;
  iso-8859-2                     ×ä&#273;
  iso-8859-4                     ×ä&#273;
$ find_enc d7e4f0 | grep ×äš
  cp1257                         ×äš
  iso-8859-13                    ×äš
$