+\setbox\z@\box\voidb@x
+\ifltj@everyhook@avail% using everyhook package
+ \ifdefined\newluafunction
+ \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
+ \PushPreHook{hbox}{%
+ \directlua{luatexja.direction.set_list_direction_hook()}%
+ \aftergroup\ltj@@reset@badness
+ }
+ \PushPreHook{vbox}{%
+ \directlua{luatexja.direction.set_list_direction_hook()}%
+ \aftergroup\ltj@@reset@badness
+ }
+ \fi
+\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
+ \ifdefined\newluafunction
+ \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}
+ \else
+ \ltj@@everyhbox{%
+ \directlua{luatexja.direction.set_list_direction_hook()}%
+ \aftergroup\ltj@@reset@badness
+ \the\ltj@@i@everyhbox}
+ \ltj@@everyvbox{%
+ \directlua{luatexja.direction.set_list_direction_hook()}%
+ \aftergroup\ltj@@reset@badness
+ \the\ltj@@i@everyvbox}
+ \fi
+\fi
+
+\ifdefined\newluafunction
+ \newluafunction\ltj@@reset@badness@inner
+ \directlua{
+ local t = lua.get_functions_table()
+ t[\the\ltj@@reset@badness@inner] = function()
+ if luatexja.global_temp then
+ tex.hbadness= tex.hbadness or luatexja.hbadness_temp
+ tex.vbadness= tex.vbadness or luatexja.vbadness_temp
+ tex.globaldefs= luatexja.global_temp or tex.globaldefs
+ end
+ end}
+ \protected\def\ltj@@reset@badness{\luafunction\ltj@@reset@badness@inner}
+\else
+ \protected\def\ltj@@reset@badness{%
+ \directlua{%
+ if luatexja.global_temp then
+ tex.hbadness= tex.hbadness or luatexja.hbadness_temp
+ tex.vbadness= tex.vbadness or luatexja.vbadness_temp
+ tex.globaldefs= luatexja.global_temp or tex.globaldefs
+ end
+ }%
+ }
+\fi