The current xterm already supported utf-8. The following is the screen capture of a demo to display the date and time by each locale on xterm. Locale List Supported Locales List - 146 pieces. These tables are provided by Unicode org. Turkish locale has tailoring based on Unicode Database.
French locale has tailoring for collation ordering.
About Unicode Locale Auto Generation Universal Locale is auto generated from ICU Locale Definition and Unicode Character Database . The auto generator uses XML based locale definition file which was auto generated from ICU locale definition file and UnicodeData base. Locale auto generator uses XML Parser for Java to generate glibc locale source file. We are going to update locale source files on CVS once and more a month. Please use CVS in order to get the latest locale source.