+%%%% insert
+\let\orig@insert=\insert
+\protected\def\insert{\begingroup\afterassignment\ltj@@insert@A\ltj@tempcnta}
+\protected\def\ltj@@insert@A{\orig@insert\ltj@tempcnta\bgroup
+ \aftergroup\ltj@@insert@B\let\next}
+\protected\def\ltj@@insert@B{\directlua{luatexja.direction.populate_insertion_dir_whatsit()}\endgroup}
+
+%%%% vadjust
+\let\ltj@@orig@vadjust=\vadjust
+\protected\def\vadjust{%
+ \ltj@@orig@vadjust\bgroup
+ \directlua{luatexja.direction.set_list_direction_hook('adj')}%
+ \aftergroup\ltj@@vadjust@check@dir\let\next}
+\protected\def\ltj@@vadjust@check@dir{%
+ \directlua{luatexja.direction.check_adjust_direction()}%
+}
+
+%%%% \hbox, \vbox, \vtop
+\setbox0\hbox{%
+ $\directlua{% This value depends on the version of LuaTeX.
+ luatexja.stack.mmode = -tex.nest[tex.nest.ptr].mode
+ }$%
+}
+% \ifltj@everyhook@avail
+% \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
+% }
+% \else
+% {\catcode`\!=0\catcode`\\=12
+% !@PackageWarningNoLine{luatexja-core}{%
+% I will use \everyhbox and \everyvbox directly !MessageBreak
+% for supporting multiple directions, !MessageBreak
+% since everyhook.sty is not available}}
+% \everyhbox{%
+% \directlua{luatexja.direction.set_list_direction_hook()}%
+% \aftergroup\ltj@@reset@badness
+% }
+% \everyvbox{%
+% \directlua{luatexja.direction.set_list_direction_hook()}%
+% \aftergroup\ltj@@reset@badness
+% }
+% \fi
+
+\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
+\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}
+
+\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
+ }%
+}
+\AtBeginShipout{\directlua{luatexja.direction.finalize()}}
+
+%%%% \raise, \lower, \moveleft, \moveright
+\let\ltj@@orig@raise=\raise
+\let\ltj@@orig@lower=\lower
+\protected\def\raise{\ltj@reset@globaldefs\afterassignment\ltj@@raise\ltj@tempdima}
+\protected\def\lower{\ltj@reset@globaldefs\afterassignment\ltj@@raise\ltj@tempdima-}
+\protected\def\ltj@@raise{%
+ \ltj@restore@globaldefs
+ \edef\ltj@@raise@a{%
+ \noexpand\directlua{luatexja.direction.raise_box()}%
+ \ltj@@orig@raise\the\ltj@tempdima\noexpand\box\ltj@afbox
+ }\ltj@afterbox\ltj@@raise@a}
+\let\ltj@@orig@moveleft=\moveleft
+\let\ltj@@orig@moveright=\moveright
+\protected\def\moveleft{\ltj@reset@globaldefs\afterassignment\ltj@@moveleft\ltj@tempdima}
+\protected\def\moveright{\ltj@reset@globaldefs\afterassignment\ltj@@moveleft\ltj@tempdima-}
+\protected\def\ltj@@moveleft{%
+ \ltj@restore@globaldefs
+ \edef\ltj@@moveleft@a{%
+ \noexpand\directlua{luatexja.direction.raise_box()}%
+ \ltj@@orig@moveleft\the\ltj@tempdima\noexpand\box\ltj@afbox
+ }\ltj@afterbox\ltj@@moveleft@a}
+
+%%%% \vcenter
+\let\ltj@@orig@vcenter=\vcenter
+\protected\def\vcenter{\ltj@afterbox\ltj@@vcenter\vbox}
+\protected\def\ltj@@vcenter{%
+ \directlua{luatexja.direction.raise_box()}%
+ \ltj@@orig@vcenter{\box\ltj@afbox}%
+}
+
+%%%% \unhbox and \unvbox
+\long\def \@gobbletwo #1#2{}
+\let\ltj@@orig@unhbox=\unhbox
+\let\ltj@@orig@unvbox=\unvbox
+\protected\def\unhbox{\ltj@reset@globaldefs\afterassignment\ltj@@unhbox\ltj@tempcnta}
+\protected\def\unvbox{\ltj@reset@globaldefs\afterassignment\ltj@@unvbox\ltj@tempcnta}
+\protected\def\ltj@@unhbox{%
+ \directlua{luatexja.direction.unbox_check_dir()}%
+ \ltj@@orig@unhbox\ltj@tempcnta}
+\protected\def\ltj@@unvbox{%
+ \directlua{luatexja.direction.unbox_check_dir()}%
+ \ltj@@orig@unvbox\ltj@tempcnta}
+\let\ltj@@orig@unhcopy=\unhcopy
+\let\ltj@@orig@unvcopy=\unvcopy
+\protected\def\unhcopy{\ltj@reset@globaldefs\afterassignment\ltj@@unhcopy\ltj@tempcnta}
+\protected\def\unvcopy{\ltj@reset@globaldefs\afterassignment\ltj@@unvcopy\ltj@tempcnta}
+\protected\def\ltj@@unhcopy{%
+ \directlua{luatexja.direction.unbox_check_dir(true)}%
+ \ltj@@orig@unhcopy\ltj@tempcnta
+ \directlua{luatexja.direction.uncopy_restore_whatsit()}}
+\protected\def\ltj@@unvcopy{%
+ \directlua{luatexja.direction.unbox_check_dir(true)}%
+ \ltj@@orig@unvcopy\ltj@tempcnta
+ \directlua{luatexja.direction.uncopy_restore_whatsit()}}
+
+
+%%%% lastbox
+\let\ltj@@orig@lastbox=\lastbox
+\protected\def\lastbox{%
+ \directlua{luatexja.direction.lastbox_hook()}\ltj@@orig@lastbox
+}
+