+\setbox\z@\box\voidb@x
+\ifltj@everyhook@avail% using everyhook package
+ \newluafunction\ltj@@box@dirhook
+ \directlua{
+ local t, ltjd = lua.get_functions_table(), luatexja.direction
+ t[\the\ltj@@box@dirhook]
+ = function() ltjd.set_list_direction_hook() end
+ }
+ \PushPreHook{hbox}{\luafunction\ltj@@box@dirhook\aftergroup\ltj@@reset@badness}
+ \PushPreHook{vbox}{\luafunction\ltj@@box@dirhook\aftergroup\ltj@@reset@badness}
+\else
+ \let\ltj@@everyhbox=\everyhbox\let\ltj@@everyvbox=\everyvbox
+ \newtoks\ltj@@i@everyhbox\newtoks\ltj@@i@everyvbox
+ \let\everyhbox=\ltj@@i@everyhbox\let\everyvbox=\ltj@@i@everyvbox
+ \newluafunction\ltj@@box@dirhook
+ \directlua{
+ local t, ltjd = lua.get_functions_table(), luatexja.direction
+ t[\the\ltj@@box@dirhook]
+ = function() ltjd.set_list_direction_hook() end
+ }
+ \ltj@@everyhbox{\luafunction\ltj@@box@dirhook
+ \aftergroup\ltj@@reset@badness\the\ltj@@i@everyhbox}
+ \ltj@@everyvbox{\luafunction\ltj@@box@dirhook
+ \aftergroup\ltj@@reset@badness\the\ltj@@i@everyvbox}
+\fi
+
+\newluafunction\ltj@@reset@badness@inner
+\directlua{
+ local t = lua.get_functions_table()
+ t[\the\ltj@@reset@badness@inner] = function()