To handle Japanese correctly, you should apply the patch libiconv-1.8-cp932-patch.diff.gz to libiconv-1.8.

Using the patched libiconv-1.8, these settings are available:

dos charset = CP932
unix charset = CP932 / eucJP-ms / UTF-8
		|       |
		|       +-- EUC-JP series
		+-- Shift_JIS series
display charset = CP932

Other Japanese locales (for example, Shift_JIS and EUC-JP) should not be used because of the lack of the compatibility with Windows.

To handle Japanese correctly, you should apply a patch to glibc-2.2.5/2.3.1/2.3.2 or should use the patch-merged versions, glibc-2.3.3 or later.

Using the above glibc, these setting are available:

Other Japanese locales (for example, Shift_JIS and EUC-JP) should not be used because of the lack of the compatibility with Windows.