You’re right. I finally rewrote for my own usage a gettex_basic module in Pure Perl that does only the very basic of gettext (ignoring plural forms and codesets) which test if we are on Win32 get the locale by a special way (from registry). And it finally fits my need : I use Locale:gettext if LC_MESSAGES is defined and otherwwise, if Win32, get the system value through the registry and convert it to a POSIX compliant language code...