1 \documentclass{ltjsarticle}
2 \usepackage[sourcehan-jp,nfssonly]{luatexja-preset}
6 \setbox0=\hbox{\tate あ〳〵あ〱あ――あ}\leavevmode\vrule\copy0\vrule
7 {\ttfamily\tiny\directlua{%
8 luatexja.ext_show_node(tex.getbox(0), '\string\\par> ', tex.print)
12 \setbox0=\hbox{\yoko あ〳〵あ〱あ――あ}\par
16 {\ttfamily\tiny\directlua{%
17 luatexja.ext_show_node(tex.getbox(0), '\string\\par> ', tex.print)