Actually I shouldn't call it "crashed", it just can't detect if there are 2 "ö" Here is the code to duplicate the problem, one "ö" is fine, a space between 2 "ö ö" is fine, "öñ" (%F6%F1) is fine but not "öö" 
use utf8;
use Text::Unaccent;
use Encode::Detect::Detector;

## my $author = "Sch%F6ttl";
my $author = "Sch%F6%F6ttl";

$author =~ s/%([a-zA-Z0-9][a-zA-Z0-9])/pack('C',hex($1))/eg;
my $encoding = Encode::Detect::Detector::detect($author);
print "encoding: $encoding: $author <br>\n";
if($encoding){
  $author = unac_string($encoding, $author);
  print "after unac: $author<br>\n";
}

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In reply to Re^2: Perl detect utf8, iso-8859-1 encoding by swiftlet
in thread Perl detect utf8, iso-8859-1 encoding by swiftlet

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