X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=src%2Fltj-direction.lua;h=7dd0dee906166e447dfea73f70852d9900f29f26;hb=35abc8d5257bf4a8dd76354b821b22fb8fb5e135;hp=fb3c5419045f5a92a153fa53be10e87f4ec62c81;hpb=77736c93df2de8812680c8839f6ad22305022854;p=luatex-ja%2Fluatexja.git

diff --git a/src/ltj-direction.lua b/src/ltj-direction.lua
index fb3c541..7dd0dee 100644
--- a/src/ltj-direction.lua
+++ b/src/ltj-direction.lua
@@ -10,26 +10,24 @@ local attr_dir = luatexbase.attributes['ltj@dir']
 local attr_icflag = luatexbase.attributes['ltj@icflag']
 
 local cat_lp = luatexbase.catcodetables['latex-package']
-local Dnode = node.direct or node
-local nullfunc = function (n) return n end
-local to_node = (Dnode ~= node) and Dnode.tonode or nullfunc
-local to_direct = (Dnode ~= node) and Dnode.todirect or nullfunc
-local has_attr = Dnode.has_attribute
-local set_attr = Dnode.set_attribute
-local insert_before = Dnode.insert_before
-local insert_after = Dnode.insert_after
-local getid = (Dnode ~= node) and Dnode.getid or function(n) return n.id end
-local getsubtype = (Dnode ~= node) and Dnode.getsubtype or function(n) return n.subtype end
-local getlist = (Dnode ~= node) and Dnode.getlist or function(n) return n.head end
-local setfield = (Dnode ~= node) and Dnode.setfield or function(n, i, c) n[i] = c end
-local getfield = (Dnode ~= node) and Dnode.getfield or function(n, i) return n[i] end
-local node_new = Dnode.new
-local node_tail = Dnode.tail
-local node_free = Dnode.free
-local node_remove = Dnode.remove
-local node_next = (Dnode ~= node) and Dnode.getnext or node.next
-local traverse = Dnode.traverse
-local traverse_id = Dnode.traverse_id
+local to_node = node.direct.tonode
+local to_direct = node.direct.todirect
+local has_attr = node.direct.has_attribute
+local set_attr = node.direct.set_attribute
+local insert_before = node.direct.insert_before
+local insert_after = node.direct.insert_after
+local getid = node.direct.getid
+local getsubtype = node.direct.getsubtype
+local getlist = node.direct.getlist
+local setfield = node.direct.setfield
+local getfield = node.direct.getfield
+local node_new = node.direct.new
+local node_tail = node.direct.tail
+local node_free = node.direct.free
+local node_remove = node.direct.remove
+local node_next = node.direct.getnext
+local traverse = node.direct.traverse
+local traverse_id = node.direct.traverse_id
 local start_time_measure, stop_time_measure
    = ltjb.start_time_measure, ltjb.stop_time_measure
 local abs = math.abs
@@ -45,7 +43,7 @@ local sid_user = node.subtype('user_defined')
 
 local tex_nest = tex.nest
 local tex_getcount = tex.getcount
-local tex_set_attr = tex.setattribute
+local ensure_tex_attr = ltjb.ensure_tex_attr
 local PROCESSED    = luatexja.icflag_table.PROCESSED
 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
 local PACKED       = luatexja.icflag_table.PACKED
@@ -63,6 +61,21 @@ end
 
 local page_direction
 --
+local dir_pool
+do
+   local node_copy = node.direct.copy
+   dir_pool = {}
+   for _,i in pairs({dir_tate, dir_yoko, dir_dtou, dir_utod}) do
+      local w = node_new(id_whatsit, sid_user)
+      set_attr(w, attr_dir, i)
+      setfield(w, 'user_id', DIR)
+      setfield(w, 'type', 110)
+      setfield(w, 'next', nil)
+      dir_pool[i] = function () return node_copy(w) end
+   end
+end
+
+--
 local function adjust_badness(hd)
    if not node_next(hd) and getid(hd)==id_whatsit and getsubtype(hd)==sid_user
    and getfield(hd, 'user_id')==DIR then
@@ -93,14 +106,14 @@ do
       end
    end
    function get_dir_count()
-      for i=tex_nest.ptr, 1, -1 do
-	 local h = tex_nest[i].head.next
-	 if h then
-	    local t = get_dir_count_inner(h)
-	    if t~=0 then return t end
-	 end
-      end
-      return page_direction
+       for i=tex_nest.ptr, 1, -1 do
+	   local h = tex_nest[i].head.next
+	   if h then
+	       local t = get_dir_count_inner(h)
+	       if t~=0 then return t end
+	   end
+       end
+       return page_direction
    end
    function get_adjust_dir_count()
       for i=tex_nest.ptr, 1, -1 do
@@ -125,6 +138,8 @@ do
    local node_traverse = node.traverse
    local STCK = luatexja.userid_table.STCK
    local IHB = luatexja.userid_table.IHB
+   local id_local = node.id('local_par')
+   local id_dir = node.id('dir')
 
    local function test_list(h, lv)
       if not h then
@@ -134,27 +149,48 @@ do
 	 local w
 	 for p in node_traverse(h) do
 	    if p.id==id_whatsit then
-	       if p.subtype==sid_user then
+	       local ps = p.subtype
+	       if ps==sid_user then
 		  local uid= p.user_id
 		  if uid==DIR then
 		     flag = 1; w = w or p -- found
 		  elseif not(uid==IHB or uid==STCK) then
 		     flag = 0; break -- error
 		  end
-	       else
-		  flag = 0; break
 	       end
-	    else
+	    elseif p.id~=id_local and p.id~=id_dir then
 	       flag = 0; break
 	    end
 	 end
-	 if flag==1 then -- move dir_whatsit w
-	    return 1,w -- TODO
+	 if flag==1 then -- dir_whatsit already exists
+	    return 1,w
 	 else
 	    return flag
 	 end
       end
    end
+   local node_next_node, node_tail_node = node.next, node.tail
+   local insert_after_node = node.insert_after
+   function luatexja.direction.set_list_direction_hook(v)
+      local lv = tex_nest.ptr -- must be >= 1
+      if not v then
+         v = get_dir_count()
+	 if abs(tex_nest[lv-1].mode) == ltjs.mmode and v == dir_tate then
+	    v = dir_utod
+	 end
+      elseif v=='adj' then
+         v = get_adjust_dir_count()
+      end
+      local h = tex_nest[lv].head
+      local hn = node.next(h)
+      hn = (hn and hn.id==id_local) and hn or h
+      local w = to_node(dir_pool[v]())
+      insert_after_node(h, hn, w)
+      tex_nest[lv].tail = node_tail_node(w)
+      ensure_tex_attr(attr_icflag, 0)
+      ensure_tex_attr(attr_dir, 0)
+   end
+
    local function set_list_direction(v, name)
       local lv = tex_nest.ptr
       if not v then
@@ -165,19 +201,29 @@ do
       elseif v=='adj' then
          v,name = get_adjust_dir_count(), nil
       end
+      local current_nest = tex_nest[lv]
       if tex.currentgrouptype==6 then
 	 ltjb.package_error(
                  'luatexja',
                  "You can't use `\\" .. name .. "' in an align",
-		 "To change direction in an align, \n"
-		    .. "you shold use \\hbox or \\vbox.")
+		 "To change the direction in an align, \n"
+		 .. "you shold use \\hbox or \\vbox.")
+      elseif current_nest.mode == ltjs.hmode or abs(current_nest.mode) == ltjs.mmode then
+	 ltjb.package_error(
+                 'luatexja',
+		 "Improper `\\" .. name .. "'",
+		 'You cannot change the direction in unrestricted horizontal mode \n'
+		 .. 'nor math modes.')
       else
-	 local h = (lv==0) and tex.lists.page_head or tex_nest[lv].head.next
+	 local h = (lv==0) and tex.lists.page_head or current_nest.head.next
 	 local flag,w = test_list(h,lv)
 	 if flag==0 then
 	    if lv==0 and not page_direction then
 	       page_direction = v -- for first call of \yoko (in luatexja-core.sty)
 	    else
+              if luatexja.debug then
+                luatexja.ext_show_node_list(node.direct.tonode(h),'>> ', texio.write_nl)
+              end
               ltjb.package_error(
                  'luatexja',
                  "Use `\\" .. tostring(name) .. "' at top of list",
@@ -187,18 +233,19 @@ do
 	 elseif flag==1 then
 	    node_set_attr(w, attr_dir, v)
 	    if lv==0 then page_direction = v end
-	 else
-	    local w = node_new(id_whatsit, sid_user)
-	    setfield(w, 'next', nil)
-	    setfield(w, 'user_id', DIR)
-	    setfield(w, 'type', 110)
-	    set_attr(w, attr_dir, v)
-	    Dnode.write(w)
-	    if lv==0 then page_direction = v end
+	 elseif lv==0 then
+	    page_direction = v
+	 else -- flag == 2: need to create dir whatsit.
+	    local h = current_nest.head
+	    local hn = node.next(h)
+	    hn = (hn and hn.id==id_local) and hn or h
+	    local w = to_node(dir_pool[v]())
+	    insert_after_node(h,hn,w)
+	    current_nest.tail = node_tail_node(w)
 	 end
-         tex_set_attr('global', attr_icflag, 0)
+         ensure_tex_attr(attr_icflag, 0)
       end
-      tex_set_attr('global', attr_dir, 0)
+      ensure_tex_attr(attr_dir, 0)
    end
    luatexja.direction.set_list_direction = set_list_direction
 end
@@ -209,59 +256,65 @@ local function create_dir_whatsit(hd, gc, new_dir)
 	    getsubtype(hd)==sid_user and getfield(hd, 'user_id')==DIR then
       set_attr(hd, attr_icflag,
 	       get_attr_icflag(hd) + PROCESSED_BEGIN_FLAG)
-      tex_set_attr('global', attr_icflag, 0)
+      local n =node_next(hd)
+      if n then
+	 set_attr(n, attr_icflag,
+		  get_attr_icflag(n) + PROCESSED_BEGIN_FLAG)
+      end
+      ensure_tex_attr(attr_icflag, 0)
       return hd
    else
-      local w = node_new(id_whatsit, sid_user)
+      local w = dir_pool[new_dir]()
       setfield(w, 'next', hd)
-      setfield(w, 'user_id', DIR)
-      setfield(w, 'type', 110)
-      set_attr(w, attr_dir, new_dir)
       set_attr(w, attr_icflag, PROCESSED_BEGIN_FLAG)
       set_attr(hd, attr_icflag,
-	       (has_attr(hd, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
-		  + PROCESSED_BEGIN_FLAG)
-      tex_set_attr('global', attr_dir, 0)
-      tex_set_attr('global', attr_icflag, 0)
+	       get_attr_icflag(hd) + PROCESSED_BEGIN_FLAG)
+      ensure_tex_attr(attr_icflag, 0)
+      ensure_tex_attr(attr_dir, 0)
       return w
    end
 end
 
 -- hpack_filter, vpack_filter, post_line_break_filter
 -- の結果を組方向を明示するため，先頭に dir_node を設置
+local get_box_dir
 do
    local function create_dir_whatsit_hpack(h, gc)
       local hd = to_direct(h)
-      if gc=='fin_row' or gc == 'preamble'  then
+      if gc=='fin_row' then
 	 if hd  then
+	    for p in traverse_id(15, hd) do -- unset
+	       if get_box_dir(p, 0)==0 then
+                  setfield(p, 'head', create_dir_whatsit(getlist(p), 'fin_row', ltjs.list_dir))
+               end
+	    end
 	    set_attr(hd, attr_icflag, PROCESSED_BEGIN_FLAG)
-	    tex_set_attr('global', attr_icflag, 0)
+	    ensure_tex_attr(attr_icflag, 0)
 	 end
 	 return h
+      elseif gc == 'preamble'  then
       else
 	 adjust_badness(hd)
 	 return to_node(create_dir_whatsit(hd, gc, ltjs.list_dir))
       end
    end
 
-   luatexbase.add_to_callback('hpack_filter',
+   ltjb.add_to_callback('hpack_filter',
 			      create_dir_whatsit_hpack, 'ltj.create_dir_whatsit', 10000)
 end
 
 do
    local function create_dir_whatsit_parbox(h, gc)
-      stop_time_measure('tex_linebreak')
+      stop_time_measure('tex_linebreak');
       -- start 側は ltj-debug.lua に
-      local new_dir, hd = ltjs.list_dir, to_direct(h)
-      for line in traverse_id(id_hlist, hd) do
-         local nh = getlist(line)
-	 setfield(line, 'head', create_dir_whatsit(nh, gc, new_dir) )
-	 set_attr(line, attr_dir, new_dir)
+      local new_dir = ltjs.list_dir
+      for line in traverse_id(id_hlist, to_direct(h)) do
+	 setfield(line, 'head', create_dir_whatsit(getlist(line), gc, new_dir) )
       end
-      tex_set_attr('global', attr_dir, 0)
+      ensure_tex_attr(attr_dir, 0)
       return h
    end
-   luatexbase.add_to_callback('post_linebreak_filter',
+   ltjb.add_to_callback('post_linebreak_filter',
 			      create_dir_whatsit_parbox, 'ltj.create_dir_whatsit', 10000)
 end
 
@@ -290,7 +343,7 @@ do
       if gc=='fin_row' then -- gc == 'preamble' case is treated in dir_adjust_vpack
 	 if hd  then
 	    set_attr(hd, attr_icflag, PROCESSED_BEGIN_FLAG)
-	    tex_set_attr('global', attr_icflag, 0)
+	    ensure_tex_attr(attr_icflag, 0)
 	 end
 	 return hd
       else
@@ -455,20 +508,28 @@ end
 
 -- 1st ret val: b の組方向
 -- 2nd ret val はその DIR whatsit
-local function get_box_dir(b, default)
+function get_box_dir(b, default)
    start_time_measure('get_box_dir')
    local dir = has_attr(b, attr_dir) or 0
    local bh = getfield(b,'head')
    -- b は insert node となりうるので getlist() は使えない
    local c
-   for i=1,2 do
-      if bh and getid(bh)==id_whatsit
-      and getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
-	 c = bh
-	 dir = (dir==0) and has_attr(bh, attr_dir) or dir
+   if bh~=0 then -- bh != nil
+      for bh in traverse_id(id_whatsit, bh) do
+         if getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
+            c = bh
+           dir = (dir==0) and has_attr(bh, attr_dir) or dir
+         end
       end
-      bh = node_next(bh)
    end
+   -- for i=1,2 do
+   --    if bh and getid(bh)==id_whatsit
+   --    and getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
+   -- 	 c = bh
+   -- 	 dir = (dir==0) and has_attr(bh, attr_dir) or dir
+   --    end
+   --    bh = node_next(bh)
+   -- end
    stop_time_measure('get_box_dir')
    return (dir==0 and default or dir), c
 end
@@ -480,7 +541,7 @@ do
       start_time_measure('box_primitive_hook')
       local list_dir = get_dir_count()%dir_math_mod
       local b = getbox(tex_getcount('ltj@tempcnta'))
-      if b then
+      if b and getlist(to_direct(b)) then
 	 local box_dir = get_box_dir(to_direct(b), dir_yoko)
 	 if box_dir%dir_math_mod ~= list_dir then
 	    ltjb.package_error(
@@ -544,7 +605,7 @@ local function unwrap_dir_node(b, head, box_dir)
    end
    local shift_old, b_dir, wh = nil, get_box_dir(bh, 0)
    if wh then
-      Dnode.flush_list(getfield(wh, 'value'))
+      node.direct.flush_list(getfield(wh, 'value'))
       setfield(wh, 'value', nil)
    end
    return nh, nb, bh, b_dir
@@ -561,8 +622,8 @@ local function create_dir_node(b, b_dir, new_dir, is_manual)
 	    new_dir + (is_manual and dir_node_manual or dir_node_auto))
    set_attr(db, attr_icflag, PROCESSED)
    set_attr(b, attr_icflag, PROCESSED)
-   tex_set_attr('global', attr_dir, 0)
-   tex_set_attr('global', attr_icflag, 0)
+   ensure_tex_attr(attr_dir, 0)
+   ensure_tex_attr(attr_icflag, 0)
    setfield(db, 'dir', getfield(b, 'dir'))
    setfield(db, 'shift', 0)
    setfield(db, 'width',  info.width(w,h,d))
@@ -583,13 +644,16 @@ do
       local bh = getlist(b)
       local box_dir, dn =  get_box_dir(b, ltjs.list_dir)
       -- 既に b の中身にあるwhatsit
-
+      if (box_dir<dir_node_auto) and (not dn) then
+	bh = create_dir_whatsit(bh, 'make_dir_whatsit', dir_yoko)
+	dn = bh; setfield(b, 'head', bh)
+      end
       if box_dir%dir_math_mod==new_dir then
 	 if box_dir>=dir_node_auto then
 	    -- dir_node としてカプセル化されている
 	    local _, dnc = get_box_dir(b, 0)
 	    if dnc then -- free all other dir_node
-	       Dnode.flush_list(getfield(dnc, 'value'))
+	       node.direct.flush_list(getfield(dnc, 'value'))
 	       setfield(dnc, 'value', nil)
 	    end
 	    set_attr(b, attr_dir, box_dir%dir_math_mod + dir_node_auto)
@@ -619,7 +683,8 @@ do
 	       db=x; break
 	    end
 	 end
-	 Dnode.flush_list(getfield(dn, 'value'))
+	 node.direct.flush_list(getfield(dn, 'value'))
+	 setfield(dn, 'value', nil)
 	 db = db or create_dir_node(b, box_dir, new_dir, false)
 	 local w = getfield(b, 'width')
 	 local h = getfield(b, 'height')
@@ -649,7 +714,8 @@ do
    end
 
    -- lastbox
-   local node_prev = (Dnode~=node) and Dnode.getprev or node.prev
+   local node_prev = (node.direct~=node) and node.direct.getprev or node.prev
+   local id_glue = node.id('glue')
    local function lastbox_hook()
       start_time_measure('box_primitive_hook')
       local bn = tex_nest[tex_nest.ptr].tail
@@ -657,6 +723,14 @@ do
 	 local b, head = to_direct(bn), to_direct(tex_nest[tex_nest.ptr].head)
 	 local bid = getid(b)
 	 if bid==id_hlist or bid==id_vlist then
+            local p = getlist(b)
+	    -- alignment の各行の中身が入ったボックス
+            if p and getid(p)==id_glue and getsubtype(p)==12 then -- tabskip
+	       local np = node_next(p); local npid = getid(np)
+	       if npid==id_hlist or npid==id_vlist then
+		  setfield(b, 'head', create_dir_whatsit(p, 'align', get_box_dir(np, 0)))
+	       end
+            end
 	    local box_dir =  get_box_dir(b, 0)
 	    if box_dir>= dir_node_auto then -- unwrap dir_node
 	       local p = node_prev(b)
@@ -667,7 +741,7 @@ do
 	    end
 	    local _, wh =  get_box_dir(b, 0) -- clean dir_node attached to the box
 	    if wh then
-	       Dnode.flush_list(getfield('value', wh))
+	       node.direct.flush_list(getfield('value', wh))
 	       setfield(wh, 'value', nil)
 	    end
 	 end
@@ -722,11 +796,14 @@ do
       else
          setdimen('ltj@tempdima', 0)
       end
+      tex.sprint(cat_lp, '\\ltj@tempdima')
       tex.globaldefs = gt
    end
    luatexja.direction.get_box_dim = get_box_dim
 
    -- return value: (changed dimen of box itself?)
+   local scan_dimen, scan_int = token.scan_dimen, token.scan_int
+   local scan_keyword = token.scan_keyword
    local function set_box_dim_common(key, s, l_dir)
       local s_dir, wh = get_box_dir(s, dir_yoko)
       s_dir = s_dir%dir_math_mod
@@ -747,10 +824,10 @@ do
             setfield(db, 'next', dnh)
             setfield(wh, 'value',to_node(db))
          end
-         setfield(db, key, tex.getdimen('ltj@tempdima'))
+         setfield(db, key, scan_dimen())
 	 return false
       else
-         setfield(s, key, tex.getdimen('ltj@tempdima'))
+         setfield(s, key, scan_dimen())
 	 if wh then
 	    -- change dimension of dir_nodes which are created "automatically"
 	       local bw, bh, bd
@@ -769,8 +846,7 @@ do
       end
    end
    local function set_box_dim(key)
-      local n = tex_getcount('ltj@tempcnta')
-      local s = getbox(n)
+      local s = getbox(scan_int()); scan_keyword('=')
       if s then
 	 local l_dir = (get_dir_count())%dir_math_mod
 	 s = to_direct(s)
@@ -779,7 +855,7 @@ do
             set_box_dim_common(key, s, l_dir)
 	 elseif b_dir%dir_math_mod == l_dir then
 	    -- s is dir_node
-	    setfield(s, key, tex.getdimen('ltj@tempdima'))
+	    setfield(s, key, scan_dimen())
 	    if b_dir<dir_node_manual then
 	       set_attr(s, attr_dir, b_dir%dir_node_auto + dir_node_manual)
 	    end
@@ -826,7 +902,7 @@ do
 end
 
 do
-   local getbox, setbox, copy_list = tex.getbox, tex.setbox, Dnode.copy_list
+   local getbox, setbox, copy_list = tex.getbox, tex.setbox, node.direct.copy_list
    -- raise, lower
    function luatexja.direction.raise_box()
       start_time_measure('box_primitive_hook')
@@ -838,10 +914,8 @@ do
 	 if box_dir%dir_math_mod ~= list_dir then
 	    setbox(
 	       'ltj@afbox',
-	       to_node(
-		  copy_list(make_dir_whatsit(sd, sd, list_dir, 'box_move'))
-		  -- without copy_list, we get a segfault
-	       )
+	       to_node(copy_list(make_dir_whatsit(sd, sd, list_dir, 'box_move')))
+	       -- copy_list しないとリストの整合性が崩れる……？
 	    )
 	 end
       end
@@ -854,35 +928,86 @@ end
 do
    local function glyph_from_packed(h)
       local b = getlist(h)
-      return (getid(b)==id_kern)
-	 and node_next(node_next(node_next(node_next(b)))) or b
+      return (getid(b)==id_kern or (getid(b)==id_whatsit and getsubtype(b)==sid_save) )
+	 and node_next(node_next(node_next(b))) or b
    end
    luatexja.direction.glyph_from_packed = glyph_from_packed
 end
 
--- adjust and insertion
-local id_adjust = node.id('adjust')
-function luatexja.direction.check_adjust_direction()
-   start_time_measure('box_primitive_hook')
-   local list_dir = get_adjust_dir_count()
-   local a = tex_nest[tex_nest.ptr].tail
-   local ad = to_direct(a)
-   if a and getid(ad)==id_adjust then
-      local adj_dir = get_box_dir(ad)
-      if list_dir~=adj_dir then
-         ltjb.package_error(
-                 'luatexja',
-                 'Direction Incompatible',
-                 "\\vadjust's argument and outer vlist must have same direction.")
-         Dnode.last_node()
+-- adjust
+do
+   local id_adjust = node.id('adjust')
+   function luatexja.direction.check_adjust_direction()
+      start_time_measure('box_primitive_hook')
+      local list_dir = get_adjust_dir_count()
+      local a = tex_nest[tex_nest.ptr].tail
+      local ad = to_direct(a)
+      if a and getid(ad)==id_adjust then
+	 local adj_dir = get_box_dir(ad)
+	 if list_dir~=adj_dir then
+	    ltjb.package_error(
+	       'luatexja',
+	       'Direction Incompatible',
+	       "\\vadjust's argument and outer vlist must have same direction.")
+	    node.direct.last_node()
+	 end
       end
+      stop_time_measure('box_primitive_hook')
+   end
+end
+
+-- insert
+do
+   local id_ins = node.id('ins')
+   local id_rule = node.id('rule')
+   function luatexja.direction.populate_insertion_dir_whatsit()
+      start_time_measure('box_primitive_hook')
+      local list_dir = get_dir_count()
+      local a = tex_nest[tex_nest.ptr].tail
+      local ad = to_direct(a)
+      if (not a) or getid(ad)~=id_ins then
+	  a = node.tail(tex.lists.page_head); ad = to_direct(a)
+      end
+      if a and getid(ad)==id_ins then
+	 local h = getfield(ad, 'head')
+	 if getid(h)==id_whatsit and
+	    getsubtype(h)==sid_user and getfield(h, 'user_id')==DIR then
+	       local n = h; h = node_remove(h,h)
+	       node_free(n)
+	 end
+	 for box_rule in traverse(h) do
+	    if getid(box_rule)<id_rule then
+	       h = insert_before(h, box_rule, dir_pool[list_dir]())
+	    end
+	 end
+	 ensure_tex_attr(attr_dir, 0)
+	 setfield(ad, 'head', h)
+      end
+      stop_time_measure('box_primitive_hook')
    end
-   stop_time_measure('box_primitive_hook')
 end
 
 -- vsplit
 do
-   local split_dir_whatsit
+   local split_dir_whatsit, split_dir_head
+   local cat_lp = luatexbase.catcodetables['latex-package']
+   local sprint, scan_int, tex_getbox = tex.sprint, token.scan_int, tex.getbox
+   function luatexja.direction.vsplit()
+      local n = scan_int();
+      local p = to_direct(tex_getbox(n))
+      split_dir_head = nil
+      if p then
+	 local bh = getlist(p)
+	 if getid(bh)==id_whatsit and getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR 
+	    and node_next(bh) then
+	    ltjs.list_dir = has_attr(bh, attr_dir)
+	    local q = node_next(p)
+	    setfield(p, 'head', node_remove(bh,bh,bh))
+	    split_dir_head = bh
+	 end
+      end
+      sprint(cat_lp, '\\ltj@@orig@vsplit' .. tostring(n))
+   end	
    local function dir_adjust_vpack(h, gc)
       start_time_measure('direction_vpack')
       local hd = to_direct(h)
@@ -891,13 +1016,10 @@ do
 	 hd = create_dir_whatsit_vbox(hd, gc)
 	 split_dir_whatsit = hd
       elseif gc=='split_off'  then
-	 local bh=hd
-	 for i=1,2 do
-	    if bh and getid(bh)==id_whatsit
-	    and getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
-	       ltjs.list_dir  = has_attr(bh, attr_dir); break
-	    end
-	    bh = node_next(bh)
+	 if split_dir_head then
+	    ltjs.list_dir = has_attr(split_dir_head, attr_dir)
+	    hd = insert_before(hd, hd, split_dir_head)
+	    split_dir_head=nil
 	 end
 	 if split_dir_whatsit then
 	    -- adjust direction of 'split_keep'
@@ -908,13 +1030,15 @@ do
 	 split_dir_whatsit=nil
       else
 	 adjust_badness(hd)
-	 hd = process_dir_node(create_dir_whatsit_vbox(hd, gc), gc)
+	 -- hd = process_dir_node(create_dir_whatsit_vbox(hd, gc), gc)
+	 -- done in append_to_vpack callback
+	 hd = create_dir_whatsit_vbox(hd, gc)
 	 split_dir_whatsit=nil
       end
       stop_time_measure('direction_vpack')
       return to_node(hd)
    end
-   luatexbase.add_to_callback('vpack_filter',
+   ltjb.add_to_callback('vpack_filter',
 			      dir_adjust_vpack,
 			      'ltj.direction', 10000)
 end
@@ -924,7 +1048,7 @@ do
    local function dir_adjust_pre_output(h, gc)
       return to_node(create_dir_whatsit_vbox(to_direct(h), gc))
    end
-   luatexbase.add_to_callback('pre_output_filter',
+   ltjb.add_to_callback('pre_output_filter',
 			      dir_adjust_pre_output,
 			      'ltj.direction', 10000)
 
@@ -939,26 +1063,7 @@ do
    end
 end
 
--- buildpage filter
-do
-   local function dir_adjust_buildpage(info)
-      if info=='box' then
-	 local head = to_direct(tex.lists.contrib_head)
-	 local nb
-	 if head then
-	    head, _, nb
-	       = make_dir_whatsit(head,
-				  node_tail(head),
-				  get_dir_count(),
-				  'buildpage')
-	    tex.lists.contrib_head = to_node(head)
-	 end
-      end
-   end
-   luatexbase.add_to_callback('buildpage_filter',
-			      dir_adjust_buildpage,
-			      'ltj.direction', 10000)
-end
+-- append_to_vlist filter: done in ltj-lineskip.lua
 
 -- finalize (executed just before \shipout)
 -- we supply correct pdfsavematrix nodes etc. inside dir_node
@@ -966,20 +1071,25 @@ do
    local finalize_inner
    local function finalize_dir_node(db,new_dir)
       local b = getlist(db)
+      if getid(b)==id_whatsit and getsubtype(b)==sid_user
+         and getfield(b, 'user_id')==DIR then
+         local ob = b; b = node_remove(b,b); setfield(db, 'head', b);
+	 node_free(ob)
+      end
       finalize_inner(b)
-      local box_dir = get_box_dir(b, dir_yoko)%dir_math_mod
-      setfield(db, 'head', nil)
       local w = getfield(b, 'width')
       local h = getfield(b, 'height')
       local d = getfield(b, 'depth')
       local dn_w = getfield(db, 'width')
       local dn_h = getfield(db, 'height')
       local dn_d = getfield(db, 'depth')
-      local db_head, db_tail  = nil
-      for _,v in ipairs(dir_node_aux[box_dir][new_dir][getid(b)]) do
+      local db_head, db_tail
+      local t = dir_node_aux[get_box_dir(b, dir_yoko)%dir_math_mod][new_dir]
+      t = t and t[getid(b)]; if not t then return end
+      for _,v in ipairs(t) do
          local cmd, arg, nn = v[1], v[2]
          if cmd=='kern' then
-            nn = node_new(id_kern)
+            nn = node_new(id_kern, 1)
             setfield(nn, 'kern', arg(w, h, d, dn_w, dn_h, dn_d))
          elseif cmd=='whatsit' then
             nn = node_new(id_whatsit, arg)
@@ -994,11 +1104,16 @@ do
             insert_after(db_head, db_tail, nn)
             db_tail = nn
          else
-            db_head, db_tail = nn, nn
+            setfield(db, 'head', nn)
+	    db_head, db_tail = nn, nn
          end
-         setfield(db, 'head', db_head)
       end
    end
+
+   tex.setattribute(attr_dir, dir_yoko)
+   local shipout_temp =  node_new(id_hlist)
+   tex.setattribute(attr_dir, 0)
+
    finalize_inner = function (box)
       for n in traverse(getlist(box)) do
          local nid = getid(n)
@@ -1009,11 +1124,28 @@ do
             else
                finalize_inner(n)
             end
-         end
+	 end
       end
    end
    local getbox = tex.getbox
+   local setbox, copy = node.direct.setbox, node.direct.copy
+   local lua_mem_kb = 0
    function luatexja.direction.finalize()
-      finalize_inner(to_direct(tex.getbox("AtBeginShipoutBox")))
+      local a = to_direct(tex.getbox("AtBeginShipoutBox"))
+      local a_dir = get_box_dir(a, dir_yoko)
+      if a_dir~=dir_yoko then
+         local b = create_dir_node(a, a_dir, dir_yoko, false)
+         setfield(b, 'head', a); a = b
+      end
+      setfield(shipout_temp, 'head', a)
+      finalize_inner(shipout_temp)
+      setbox('global', "AtBeginShipoutBox", copy(getlist(shipout_temp)))
+      setfield(shipout_temp, 'head',nil)
+      -- garbage collect
+      --local m = collectgarbage('count')
+      --if m>lua_mem_kb+20480 then
+      --   collectgarbage(); lua_mem_kb = collectgarbage('count')
+      --end
+      --print('Lua Memory Usage', lua_mem_kb)
    end
 end