\input docstrip.tex
\askforoverwritefalse
\generate{\file{luatexja-ja.tex}{\from{luatexja.dtx}{ja}}
\file{luatexja-en.tex}{\from{luatexja.dtx}{en}}
\input docstrip.tex
\askforoverwritefalse
\generate{\file{luatexja-ja.tex}{\from{luatexja.dtx}{ja}}
\file{luatexja-en.tex}{\from{luatexja.dtx}{en}}