XmStringGetCurrentCharset behaves wrong?

[David Rysdam]

Disclaimer: I am neither an i18n NOR a Motif expert.

_XmStringGetCurrentCharset appears to have the wrong behavior.  It
checks the env variable LANG and (with a few exceptions) returns it as
the current charset.  But, as I understand it, a lang and a charset are
not interchangeable.  For instance, the LANG en_US uses the charset
ISO8859--but so does the lang en_DE (or whatever German is).

Can anyone confirm that this is a LessTif issue?