Hi, a year ago, there was a discussion on this list about Encode not recognizing "TIS-620" as alias for "iso-8859-11":
http://nntp.x.perl.org/group/perl.unicode/1656 In the latest release of Encode::Alias (1.38 from Encode 1.9801, included in Perl 5.8.2-RC1), "TIS-620" will still fail as a valid encoding name, although that is still the only Thai character-set name approved by IANA. So why not applying that simple patch to Encode/Alias.pm: # Alias.patch: 176c176 < 'tis620' => 'iso-8859-11', --- > qr/tis[-]?620/i => '"iso-8859-11"', patch -b Alias.pm Alias.patch best, rob.