\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{ltj-latex}[2013/05/14 LaTeX support of LuaTeX-ja]
+% I (HK) don't know why the code below is not necessary.
+%\let\ltj@@orig@end=\@@end
+%\outer\protected\def\@@end{%
+% \directlua{luatexja.direction.remove_end_whatsit()}\ltj@@orig@end}
+
% Globally add to the head of a macro (cf. LaTeX2e's \g@addto@macro)
\long\def\ltj@g@addto@macro#1#2{
\begingroup