CP949 for EUC-KR?

I heard pg_get_encoding_from_locale() failed in kor locale.

    WARNING:  could not determine encoding for locale "kor": codeset is "CP949"

I found the following description in the web:
    CP949 is EUC-KR, extended with UHC (Unified Hangul Code).
    http://www.opensource.apple.com/source/libiconv/libiconv-13.2/libiconv/lib/cp949.h

but we define CP51949 for EUC-KR in chklocale.c.
    {PG_EUC_KR, "CP51949"},		/* or 20949 ? */

Which is the compatible codeset with our PG_EUC_KR encoding?
949, 51949, or 20949? Should we add (or replace) CP949 for EUC-KR?

Regards,
---
Takahiro Itagaki
NTT Open Source Software Center