\expandafter\ltj@@IsFontJapaneseX#1//:%
\expandafter\expandafter\expandafter
\inlist@\expandafter\tmp@item\expandafter{\kenc@list}}
\expandafter\ltj@@IsFontJapaneseX#1//:%
\expandafter\expandafter\expandafter
\inlist@\expandafter\tmp@item\expandafter{\kenc@list}}