Encoding mappings between euc-jp and Shift_JIS and other encoding (such
as Unicode) is not determined as exactly one to one.
This knobs are off by default because author of encoding mappings thought
that any of mappings should not be used by default until final mapping
will be determined (by foo organization?).
Define $XMLPARSER_EUCJP and/or $XMLPARSER_SJIS in /etc/make.conf to
x-euc-jp-(jisx0221|unicode) and/or x-sjis(cp932|jdk117|jisx0221|unicode)
to use these encodings in XML files by p5-XML-Parser (and it's dependents).
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