%#! lualatex -shell-escape
\input docstrip.tex
\askforoverwritefalse
\generate{\file{man-ja.tex}{\from{manual.dtx}{ja}}
          \file{man-en.tex}{\from{manual.dtx}{en}}}
\immediate\write18{lualatex man-ja}
\immediate\write18{lualatex man-en}
\endbatchfile
