At /usr/share/X11/locale/locale.dir I read "# Esperato (eo) is not
supported by the GNU C Library and neither the
# EO nor XX territories exist in ISO 3166."
In "Lists of country names and code elements" at
http://www.iso.org/iso/country_codes/iso_3166_code_lists/english_country_names_and_code_elements.htm
yes, because there are not country with code XX or EO.
But at ISO 3166-1 decoding table
http://www.iso.org/iso/country_codes/iso_3166_code_lists/iso-3166-1_decoding_table.htm
I read:
XX = Code element may be used without restriction
-- System Information:
Debian Release: sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.24-1-686 (SMP w/1 CPU core)
Locale: LANG=eo_XX.UTF-8, LC_CTYPE=pt_BR.UTF-8 (charmap=locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
ANSI_X3.4-1968) (ignored: LC_ALL set to eo_XX.UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages libx11-data depends on:
ii x11-common 1:7.3+10 X Window System (X.Org) infrastruc
libx11-data recommends no packages.
-- debconf information:
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "eo_XX.UTF-8",
LC_ALL = "eo_XX.UTF-8",
LC_CTYPE = "pt_BR.UTF-8",
LANG = "eo_XX.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory