Defined in 3 files as a macro:
- external/gpl2/gettext/dist/gettext-runtime/intl/localename.c, line 284 (as a macro)
- external/gpl2/texinfo/dist/intl/localename.c, line 276 (as a macro)
- external/gpl3/binutils/dist/intl/localename.c, line 111 (as a macro)