The DISPLAY_ENCODING variable defines which character encoding your terminal is using for the text it draws. By default, ircII assumes that your terminal uses ISO-8859-1.
Examples of common encodings: UTF-8 Unicode encoding, supports almost all languages ISO-8859-1 Most widely used "latin1" encoding. ISO-8859-2 Polish, Czech, Slovak, Slovenian, Hungarian ISO-8859-5 Cyrillic encoding: Russian, Ukrainian, Belarusian ISO-8859-6 An incomplete Arabic encoding ISO-8859-7 Greek encoding ISO-8859-8 Modern Hebrew encoding ISO-8859-9 Turkish, Maltese, Esperanto ISO-8859-10 Estonian, Latvian, Lithuanian, Greenlandic, Saami ISO-8859-11 Thai ISO-8859-15 Latin1 revised, with Euro for Finnish and French ISO-8859-16 Albanian, Croatian, Romanian, Gaelic etc with Euro EUC-JP Doublebyte Japanese JIS-X-0208 encoding SHIFT-JIS Microsoft doublebyte Japanese encoding GB18030 Chinese multibyte encoding CP437 Old IBM PC, compatibles and Atari ST. CP850 New IBM PC compatibles and IBM PS/2. HP-ROMAN8 Hewlett Packard Extended Roman 8. MACROMAN Apple Macintosh computers and boat anchors. ASCII For American terminals in 7-bit environments. ISO-2022-JP Traditional 7-bit Japanese JIS-X-0208 encoding
You can get the complete list of available encodings with the command /EXEC iconv -l if your system has it installed.
See Also: set/irc_encoding set/input_encoding digraph bind/enter_digraph