X-Git-Url: http://git.osdn.jp/view?a=blobdiff_plain;f=src%2Fltj-ruby.lua;h=84c31d7fc5e26284ad646014a4d70f4859f6ad4b;hb=1379fbf6aae445cdce3906e7b83cc1c8550e78d5;hp=42c4074fe0c46bd771f5bff78e0be59957e6bc4a;hpb=ca2f902449134e3055387148c03930652e4ee67f;p=luatex-ja%2Fluatexja.git

diff --git a/src/ltj-ruby.lua b/src/ltj-ruby.lua
index 42c4074..84c31d7 100644
--- a/src/ltj-ruby.lua
+++ b/src/ltj-ruby.lua
@@ -3,8 +3,8 @@
 --
 luatexbase.provides_module({
   name = 'luatexja.ruby',
-  date = '2014/02/06',
-  description = 'Ruby',
+  date = '2014/05/08',
+  description = 'Ruby annotation',
 })
 module('luatexja.ruby', package.seeall)
 local err, warn, info, log = luatexbase.errwarinf(_NAME)
@@ -53,6 +53,7 @@ local attr_ruby_maxmargin = luatexbase.attributes['ltj@kcat1']
 local attr_ruby_stretch = luatexbase.attributes['ltj@kcat2']
 local attr_ruby_mode = luatexbase.attributes['ltj@kcat3']
 local attr_ruby_id = luatexbase.attributes['ltj@kcat4'] -- uniq id
+local attr_ruby_intergap = luatexbase.attributes['ltj@kcat5']
 local attr_ruby = luatexbase.attributes['ltj@rubyattr']
 -- ルビ内部処理用，以下のようにノードによって使われ方が異なる
 -- * (whatsit) では JAglue 処理時に，
@@ -90,26 +91,39 @@ local function gauss(coef)
    local deg = #coef
    for i = 1, deg do
       if coef[i][i]==0 then
-	 for j = i+1, deg do 
+	 for j = i+1, deg do
 	    if coef[j][i]~=0 then
                coef[i], coef[j] = coef[j], coef[i]; break
 	    end
 	 end
       end
-      for j = 1,deg do 
+      for j = 1,deg do
 	 local d = coef[i][i];
 	 if j~=i then
 	    local e = coef[j][i]
 	    for k = 1, deg+1 do coef[j][k] = coef[j][k] - e*coef[i][k]/d end
-	 else 
+	 else
 	    for k = 1, deg+1 do coef[i][k] = coef[i][k]/d end
 	 end
       end
    end
 end
 
+local function solve_1(coef)
+   local a, b, c = coef[1][4], coef[2][4], coef[3][4]
+   coef[1][4], coef[2][4], coef[3][4] = c-b, a+b-c, c-a
+   return coef
+end
+
+local function solve_2(coef)
+   local a, b, c, d, e = coef[1][6], coef[2][6], coef[3][6], coef[4][6], coef[5][6]
+   coef[1][6], coef[2][6], coef[3][6], coef[4][6], coef[5][6]
+      = e-c, a+c-e, e-a-d, b+d-e, e-b
+   return coef
+end
+
+
 -- 実行回数 + ルビ中身 から uniq_id を作る関数
--- 未実装．これを使えば 2 回目以降の組版に 1 回目の情報が使える
 old_break_info = {} -- public, 前 run 時の分割情報
 local make_uniq_id
 do
@@ -131,7 +145,7 @@ local function concat(f, b)
 	 setfield(f, 'head', nil); node_free(f)
          setfield(b, 'head', nil); node_free(b)
 	 return Dnode.hpack(luatexja.jfmglue.main(h,false))
-      else 
+      else
 	 return f
       end
    elseif b then
@@ -172,15 +186,14 @@ do
    enlarge = function (box, new_width, pre, middle, post, prenw, postnw)
       -- pre, middle, post: 伸縮比率
       -- prenw, postnw: 前後の自然長 (sp)
-      local h = getlist(box); 
+      local h = getlist(box);
       local hh, hd = getfield(box, 'height'), getfield(box, 'depth')
       local hx = h
       while hx do
-	 if has_attr(hx, attr_icflag) == KANJI_SKIP
-	    or has_attr(hx, attr_icflag) == KANJI_SKIP_JFM
-	    or has_attr(hx, attr_icflag) == XKANJI_SKIP
-	    or has_attr(hx, attr_icflag) == XKANJI_SKIP_JFM
-	    or has_attr(hx, attr_icflag) == FROM_JFM then
+         local hic = has_attr(hx, attr_icflag)
+	 if (hic == KANJI_SKIP) or (hic == KANJI_SKIP_JFM)
+            or (hic == XKANJI_SKIP) or (hic == XKANJI_SKIP_JFM)
+            or ((hic<=FROM_JFM+2) and (hic>=FROM_JFM-2)) then
 	    -- この 5 種類の空白をのばす
 	       if getid(hx) == id_kern then
 		  local k = node_new(id_glue)
@@ -247,8 +260,9 @@ local function texiface_low(rst, rtlr, rtlp)
    setfield(wv, 'value', floor(#rtlr))
    set_attr(wv, attr_ruby, rst.rubyzw)
    set_attr(wv, attr_ruby_maxmargin, rst.maxmargin)
-   set_attr(wv, attr_ruby_maxprep, rst.intrusionpre)
-   set_attr(wv, attr_ruby_maxpostp, rst.intrusionpost)
+   set_attr(wv, attr_ruby_maxprep, rst.pre)
+   set_attr(wv, attr_ruby_maxpostp, rst.post)
+   set_attr(wv, attr_ruby_intergap, rst.intergap)
    set_attr(wv, attr_ruby_stretch, rst.stretch)
    set_attr(wv, attr_ruby_mode, rst.mode)
    local n = wv
@@ -300,17 +314,17 @@ local function enlarge_parent(r, p, ppre, pmid, ppost, mapre, mapost, intmode)
    local sumprot = rwidth - getfield(p, 'width') -- >0
    local pre_intrusion, post_intrusion
    if intmode == 0 then --  とりあえず組んでから決める
-      p = enlarge(p, rwidth, ppre, pmid, ppost, 0, 0) 
+      p = enlarge(p, rwidth, ppre, pmid, ppost, 0, 0)
       pre_intrusion  = min(mapre, round(ppre*getfield(p, 'glue_set')*65536))
       post_intrusion = min(mapost, round(ppost*getfield(p, 'glue_set')*65536))
    elseif intmode == 1 then
-      pre_intrusion = min(mapre, sumprot); 
+      pre_intrusion = min(mapre, sumprot);
       post_intrusion = min(mapost, max(sumprot-pre_intrusion, 0))
       p = enlarge(p, rwidth, ppre, pmid, ppost, pre_intrusion, post_intrusion)
    elseif intmode == 2 then
-      post_intrusion = min(mapost, sumprot); 
+      post_intrusion = min(mapost, sumprot);
       pre_intrusion = min(mapre, max(sumprot-post_intrusion, 0))
-      p = enlarge(p, rwidth, ppre, pmid, ppost, pre_intrusion, post_intrusion) 
+      p = enlarge(p, rwidth, ppre, pmid, ppost, pre_intrusion, post_intrusion)
    else --  intmode == 3
       local n = min(mapre, mapost)*2
       if n < sumprot then
@@ -318,7 +332,7 @@ local function enlarge_parent(r, p, ppre, pmid, ppost, mapre, mapost, intmode)
       else
 	 pre_intrusion = floor(sumprot/2); post_intrusion = sumprot - pre_intrusion
       end
-      p = enlarge(p, rwidth, ppre, pmid, ppost, pre_intrusion, post_intrusion) 
+      p = enlarge(p, rwidth, ppre, pmid, ppost, pre_intrusion, post_intrusion)
       pre_intrusion = min(mapre, pre_intrusion + round(ppre*getfield(p, 'glue_set')*65536))
       post_intrusion = min(mapost, post_intrusion + round(ppost*getfield(p, 'glue_set')*65536))
    end
@@ -334,13 +348,19 @@ end
 -- ルビボックスの生成（単一グループ）
 -- returned value: <new box>, <ruby width>, <post_intrusion>
 local max_margin
-local function new_ruby_box(r, p, ppre, pmid, ppost, 
-			    rpre, rmid, rpost, mapre, mapost, intmode)
+local function new_ruby_box(r, p, ppre, pmid, ppost,
+			    mapre, mapost, imode, rgap)
    local post_intrusion = 0
+   local intmode = imode%4
+   local rpre, rmid, rpost, rsmash
+   imode = floor(imode/262144); rsmash = (imode%2 ==1)
+   imode = floor(imode/2); rpost = imode%8;
+   imode = (imode-rpost)/8;  rmid  = imode%8;
+   imode = (imode-rmid)/8;   rpre  = imode%8
    if getfield(r, 'width') > getfield(p, 'width') then  -- change the width of p
       r, p, post_intrusion  = enlarge_parent(r, p, ppre, pmid, ppost, mapre, mapost, intmode)
    elseif getfield(r, 'width') < getfield(p, 'width') then -- change the width of r
-      r = enlarge(r, getfield(p, 'width'), rpre, rmid, rpost, 0, 0) 
+      r = enlarge(r, getfield(p, 'width'), rpre, rmid, rpost, 0, 0)
       post_intrusion = 0
       local need_repack = false
       -- margin が大きくなりすぎた時の処理
@@ -360,15 +380,20 @@ local function new_ruby_box(r, p, ppre, pmid, ppost,
 	 setfield(rt, 'head', nil); node_free(rt);
       end
    end
-   local a = node_new(id_rule)
-   setfield(a, 'width', 0)
-   setfield(a, 'height', 0)
-   setfield(a, 'depth', 0)
-   insert_after(r, r, a); insert_after(r, a, p)
-   setfield(p, 'next', nil)
-   a = Dnode.vpack(r)
-   setfield(a, 'shift', 0)
+   local a, k = node_new(id_rule), node_new(id_kern)
+   setfield(a, 'width', 0); setfield(a, 'height', 0)
+   setfield(a, 'depth', 0); setfield(k, 'kern', rgap)
+   insert_after(r, r, a); insert_after(r, a, k);
+   insert_after(r, k, p); setfield(p, 'next', nil)
+   a = Dnode.vpack(r); setfield(a, 'shift', 0)
    set_attr(a, attr_ruby, post_intrusion)
+   if rsmash or getfield(a, 'height')<getfield(p, 'height') then
+      local k = node_new(id_kern)
+      setfield(k, 'kern', -getfield(a, 'height')+getfield(p, 'height'))
+      setfield(a, 'head', k); insert_before(r, r, k)
+      setfield(a, 'height', getfield(p, 'height'))
+   end
+
    return a, getfield(r, 'width'), post_intrusion
 end
 
@@ -391,8 +416,8 @@ local function pre_low_cal_box(w, cmp)
    local mdt -- nt*: node temp
    local coef = {} -- 連立一次方程式の拡大係数行列
    local rtb = expand_3bits(has_attr(wv, attr_ruby_stretch))
-   local rtc = expand_3bits(has_attr(wv, attr_ruby_mode))
-   local intmode = floor(has_attr(wv, attr_ruby_mode)/4)%4
+   local rgap = has_attr(wv, attr_ruby_intergap)
+   local intmode = floor(has_attr(wv, attr_ruby_mode)/4)
 
    -- node list 展開・行末形の計算
    local nt, nta, ntb = wv, nil, nil -- nt*: node temp
@@ -403,9 +428,8 @@ local function pre_low_cal_box(w, cmp)
       for j = 1, 2*i do coef[i][j] = 1 end
       for j = 2*i+1, 2*cmp+1 do coef[i][j] = 0 end
       kf[i], coef[i][2*cmp+2]
-	 = new_ruby_box(node_copy(nta), node_copy(ntb), 
-			rtb[6], rtb[5], rtb[4], rtc[10], rtc[9], rtc[8], 
-			max_allow_pre, 0, intmode)
+	 = new_ruby_box(node_copy(nta), node_copy(ntb),
+			rtb[6], rtb[5], rtb[4], max_allow_pre, 0, intmode, rgap)
    end
    node_free(nta); node_free(ntb)
 
@@ -417,9 +441,8 @@ local function pre_low_cal_box(w, cmp)
       for j = 2*i, 2*cmp+1 do coef[cmp+i][j] = 1 end
       nta = concat(node_copy(rb[i]), nta); ntb = concat(node_copy(pb[i]), ntb)
       kf[cmp+i], coef[cmp+i][2*cmp+2]
-	 = new_ruby_box(node_copy(nta), node_copy(ntb), 
-			rtb[9], rtb[8], rtb[7], rtc[10], rtc[9], rtc[8], 
-			0, max_allow_post, intmode)
+	 = new_ruby_box(node_copy(nta), node_copy(ntb),
+			rtb[9], rtb[8], rtb[7], 0, max_allow_post, intmode, rgap)
    end
 
    -- ここで，nta, ntb には全 container を連結した box が入っているので
@@ -427,25 +450,31 @@ local function pre_low_cal_box(w, cmp)
    coef[2*cmp+1] = {}
    for j = 1, 2*cmp+1 do coef[2*cmp+1][j] = 1 end
    kf[2*cmp+1], coef[2*cmp+1][2*cmp+2], post_intrusion_backup
-      = new_ruby_box(nta, ntb,
-		     rtb[3], rtb[2], rtb[1], rtc[10], rtc[9], rtc[8], 
-		     max_allow_pre, max_allow_post, intmode)
+      = new_ruby_box(nta, ntb, rtb[3], rtb[2], rtb[1],
+                     max_allow_pre, max_allow_post, intmode, rgap)
 
    -- w.value の node list 更新．
    local nt = wv
    Dnode.flush_list(node_next(wv))
    for i = 1, 2*cmp+1 do setfield(nt, 'next', kf[i]); nt = kf[i]  end
 
-   gauss(coef) -- 掃きだし法で連立方程式形 coef を解く
+   if cmp==1 then     solve_1(coef)
+   elseif cmp==2 then solve_2(coef)
+   else
+      gauss(coef) -- 掃きだし法で連立方程式形 coef を解く
+   end
    return coef
 end
 
-
-local function first_whatsit(n) -- n 以後で最初の whatsit
-   for h in Dnode.traverse_id(id_whatsit, n) do
-      return h
+local first_whatsit
+do
+   local traverse_id = Dnode.traverse_id
+   function first_whatsit(n) -- n 以後で最初の whatsit
+      for h in traverse_id(id_whatsit, n) do
+         return h
+      end
+      return nil
    end
-   return nil
 end
 
 -- ノード追加
@@ -461,7 +490,7 @@ local function pre_low_app_node(head, w, cmp, coef, ht, dp)
    nt = w
    for i = 1, cmp do
       -- rule
-      local nta = node_new(id_rule); 
+      local nta = node_new(id_rule);
       setfield(nta, 'width', coef[i*2][2*cmp+2])
       setfield(nta, 'height', ht); setfield(nta, 'depth', dp)
       setfield(nta, 'subtype', 0)
@@ -477,7 +506,7 @@ local function pre_low_app_node(head, w, cmp, coef, ht, dp)
       set_attr(nt, attr_ruby, 2*i+2)
       insert_after(head, nta, nt)
    end
-   tex.setattribute(attr_ruby, -0x7FFFFFFF)
+   tex.setattribute('global', attr_ruby, -0x7FFFFFFF)
    setfield(w, 'user_id', RUBY_POST)
    return head, first_whatsit(node_next(nt))
 end
@@ -489,15 +518,19 @@ local function pre_high(ahead)
    local n = first_whatsit(head)
    while n do
       if getsubtype(n) == sid_user and getfield(n, 'user_id') == RUBY_PRE then
-         local nv = getfield(n, 'value')
+        local nv = getfield(n, 'value')
          max_allow_pre = has_attr(nv, attr_ruby_maxprep) or 0
          local atr = has_attr(n, attr_ruby) or 0
-         if atr >0 then 
-            -- 直前のルビで intrusion がおこる可能性あり．
-            -- 前 run のデータが残っていればそれを使用，
-            -- そうでなければ行中形のデータを利用する
-            local op = old_break_info[atr] or post_intrusion_backup
-            max_allow_pre = max(0, max_allow_pre - op)
+         if max_allow_pre < 0 then
+            if atr>0 then
+               -- 直前のルビで intrusion がおこる可能性あり．
+               -- 前 run のデータが残っていればそれを使用，
+               -- そうでなければ行中形のデータを利用する
+               local op = old_break_info[atr] or post_intrusion_backup
+               max_allow_pre = max(0, -max_allow_pre - op)
+            else
+               max_allow_pre = -max_allow_pre
+            end
          end
          post_intrusion_backup = 0
          max_allow_post = has_attr(nv, attr_ruby_maxpostp) or 0
@@ -505,7 +538,7 @@ local function pre_high(ahead)
          local coef = pre_low_cal_box(n, getfield(nv, 'value'))
          local s = node_tail(nv) --ルビ文字
          head, n = pre_low_app_node(
-            head, n, getfield(nv, 'value'), coef, 
+            head, n, getfield(nv, 'value'), coef,
             getfield(s, 'height'), getfield(s, 'depth')
          )
       else
@@ -513,7 +546,7 @@ local function pre_high(ahead)
       end
    end
    return to_node(head)
-end 
+end
 luatexbase.add_to_callback('pre_linebreak_filter', pre_high, 'ltj.ruby.pre', 100)
 luatexbase.add_to_callback('hpack_filter', pre_high, 'ltj.ruby.pre', 100)
 
@@ -525,9 +558,9 @@ do
    local function write_aux(wv, num)
       local id = has_attr(wv, attr_ruby_id)
       if id>0 then
-	 tex.sprint(cat_lp, 
-		    '\\write\\@mainaux{\\string\\directlua{luatexja.ruby.old_break_info[' 
-		       .. tostring(id) .. ']=' .. num 
+	 tex.sprint(cat_lp,
+		    '\\write\\@mainaux{\\string\\directlua{luatexja.ruby.old_break_info['
+		       .. tostring(id) .. ']=' .. num
 		       .. '}}')
       end
    end
@@ -538,7 +571,7 @@ do
       local hn = has_attr(rs[1], attr_ruby)
       local fn = has_attr(rs[#rs], attr_ruby)
       local wv = getfield(rw, 'value')
-      if hn==1 then 
+      if hn==1 then
 	 if fn==2*cmp+2 then
 	    local hn = node_tail(wv)
 	    node_remove(wv, hn)
@@ -547,7 +580,7 @@ do
 	    write_aux(wv, has_attr(hn, attr_ruby))-- 行中形
 	 else
 	    local deg, hn = (fn-1)/2, wv
-	    for i = 1, deg do hn = node_next(hn) end; 
+	    for i = 1, deg do hn = node_next(hn) end;
 	    node_remove(wv, hn)
 	    setfield(hn, 'next', nil)
 	    insert_after(ch, rs[#rs], hn)
@@ -555,9 +588,9 @@ do
 	    write_aux(wv, has_attr(hn, attr_ruby))
 	 end
       else
-	 local deg, hn = max((hn-1)/2,2), wv 
+	 local deg, hn = max((hn-1)/2,2), wv
 	 for i = 1, cmp+deg-1 do hn = node_next(hn) end
-	 -- -1 is needed except the case hn = 3, 
+	 -- -1 is needed except the case hn = 3,
 	 --   because a ending-line form is removed already from the list
 	 node_remove(wv, hn); setfield(hn, 'next', nil)
 	 insert_after(ch, rs[#rs], hn)
@@ -566,7 +599,7 @@ do
 	    write_aux(wv, has_attr(hn, attr_ruby))
 	 end
       end
-      for i = 1,#rs do 
+      for i = 1,#rs do
 	 local ri = rs[i]
 	 ch = node_remove(ch, ri); node_free(ri);
       end
@@ -576,30 +609,8 @@ do
    end
 end
 
--- local function is_zero_parfillskip(h,n)
---    if getid(n)==id_glue then
---       if getsubtype(n)==15 then
--- 	 local ns = getfield(n, 'spec')
--- 	 local n_width = getfield(ns, 'width')
--- 	 if getfield(h, 'glue_sign')==1 
--- 	    and getfield(h, 'glue_order') == getfield(ns, 'stretch_order') then
--- 	       n_width = n_width 
--- 		  + round(getfield(h, 'glue_set')*getfield(ns, 'stretch'))
--- 	 elseif getfield(h, 'glue_sign')==2
--- 	    and getfield(h, 'glue_order') == getfield(ns, 'shrink_order') then
--- 	       n_width = n_width 
--- 		  - round(getfield(h, 'glue_set')*getfield(n,s 'shrink'))
--- 	 end
--- 	 n = node_next(n) -- rightskip 未完
--- 	 return (n_width <= 0)
---       else return false
---       end
---    else return false
---    end
--- end
-
 local function post_high_break(head)
-   local rs = {}   -- rs: sequence of ruby_nodes, 
+   local rs = {}   -- rs: sequence of ruby_nodes,
    local rw = nil  -- rw: main whatsit
    local cmp = -2  -- dummy
    for h in Dnode.traverse_id(id_hlist, to_direct(head)) do
@@ -607,69 +618,55 @@ local function post_high_break(head)
       local ha = getlist(h)
       while ha do
 	 local hai = getid(ha)
-	 local i = (((hai == id_glue and getsubtype(ha)==0) 
-			or (hai == id_rule and getsubtype(ha)==0)
-			or (hai == id_whatsit and getsubtype(ha)==sid_user 
-			       and getfield(ha, 'user_id')==RUBY_POST))
-		       and has_attr(ha, attr_ruby)) or 0
-	 if i==1 then 
+	 local i = ((hai == id_glue and getsubtype(ha)==0)
+                       or (hai == id_rule and getsubtype(ha)==0)
+                       or (hai == id_whatsit and getsubtype(ha)==sid_user
+                              and getfield(ha, 'user_id', RUBY_POST)))
+            and has_attr(ha, attr_ruby) or 0
+	 if i==0 then
+            ha = node_next(ha)
+         elseif i==1 then
 	    setfield(h, 'head', post_lown(rs, rw, cmp, getlist(h)))
 	    for i = 2, #rs do rs[i] = nil end -- rs[1] is set by the next statement
 	    rs[1], rw = ha, nil; ha = node_next(ha)
-	 elseif i==2*cmp+2 then
-	    -- local par_not_end = true
-	    -- local hn = node_next(ha)
-	    -- if hn and getid(hn)==id_penalty and getfield(hn, 'penalty')==10000 then
-	    --    local hm = node_next(hn)
-	    --    if is_zero_parfillskip(h,hm) then
-	    --       par_not_end = false
-	    --    end
-	    -- end
-	    -- if par_not_end then
-	       rs[#rs+1] = ha; ha = node_next(ha)
-	    -- else
-	    --   setfield(h, 'head', node_remove(getlist(h), ha)); break
-	    -- end
-	 elseif i>=3 then 
-	    rs[#rs+1] = ha; ha = node_next(ha)
-	 elseif i==2 then 
+	 elseif i==2 then
 	    rw = ha
 	    cmp = getfield(getfield(rw, 'value'), 'value')
 	    local hb, hc =  node_remove(getlist(h), rw)
 	    setfield(h, 'head', hb); ha = hc
-	 else
-	    ha = node_next(ha)
+	 else -- i>=3
+	    rs[#rs+1] = ha; ha = node_next(ha)
 	 end
       end
       setfield(h, 'head', post_lown(rs, rw, cmp, getlist(h)))
    end
    return head
-end 
+end
 
 local function post_high_hbox(ahead)
    local ha = to_direct(ahead); local head = ha
-   local rs = {};  -- rs: sequence of ruby_nodes, 
+   local rs = {};  -- rs: sequence of ruby_nodes,
    local rw = nil; -- rw: main whatsit
    local cmp
    while ha do
       local hai = getid(ha)
-      local i = (((hai == id_glue and getsubtype(ha)==0) 
-                     or (hai == id_rule and getsubtype(ha)==0)
-                     or (hai == id_whatsit and getsubtype(ha)==sid_user 
-                            and getfield(ha, 'user_id', RUBY_POST)))
-                    and has_attr(ha, attr_ruby)) or 0
-      if i==1 then 
+      local i = ((hai == id_glue and getsubtype(ha)==0)
+                    or (hai == id_rule and getsubtype(ha)==0)
+                    or (hai == id_whatsit and getsubtype(ha)==sid_user
+                           and getfield(ha, 'user_id', RUBY_POST)))
+         and has_attr(ha, attr_ruby) or 0
+      if i==0 then
+         ha = node_next(ha)
+      elseif i==1 then
          head = post_lown(rs, rw, cmp, head)
          for i = 2, #rs do rs[i] = nil end -- rs[1] is set by the next statement
 	 rs[1], rw = ha, nil; ha = node_next(ha)
-      elseif i>=3 then 
-         rs[#rs+1] = ha; ha = node_next(ha)
-      elseif i==2 then 
+      elseif i==2 then
          rw = ha
 	 cmp = getfield(getfield(rw, 'value'), 'value')
 	 head, ha = node_remove(head, rw)
-      else
-         ha = node_next(ha)
+      else -- i >= 3
+         rs[#rs+1] = ha; ha = node_next(ha)
       end
    end
    return to_node(post_lown(rs, rw, cmp, head))
@@ -684,25 +681,39 @@ luatexbase.add_to_callback('hpack_filter', post_high_hbox, 'ltj.ruby.post_hbox',
 ----------------------------------------------------------------
 do
    local RIPRE  = luatexja.stack_table_index.RIPRE
-   local function whatsit_callback(Np, lp, Nq, bsl) 
-      if Np.nuc then return Np 
+   local function whatsit_callback(Np, lp, Nq, bsl)
+      if Np.nuc then return Np
       elseif getfield(lp, 'user_id') == RUBY_PRE then
          Np.first, Np.nuc, Np.last = lp, lp, lp
          local lpv = getfield(lp, 'value')
          local x = node_next(node_next(lpv))
          Np.last_char = luatexja.jfmglue.check_box_high(Np, getlist(x), nil)
-         if Nq.id ~=id_pbox_w and  type(Nq.char)=='number' then
-	    -- Nq is a JAchar
-            if has_attr(lpv, attr_ruby_maxprep) < 0 then -- auto
-               local p = round((ltjs.table_current_stack[RIPRE + Nq.char] or 0)
-                                  *has_attr(lpv, attr_ruby))
-               if has_attr(lpv, attr_ruby_mode)%2 == 0 then -- intrusion 無効
-                  p = 0
+         if Nq.id ~=id_pbox_w then
+            if type(Nq.char)=='number' then
+               -- Nq is a JAchar
+               if has_attr(lpv, attr_ruby_maxprep) < 0 then -- auto
+                  local p = round((ltjs.table_current_stack[RIPRE + Nq.char] or 0)
+                                     *has_attr(lpv, attr_ruby))
+                  if has_attr(lpv, attr_ruby_mode)%2 == 0 then -- intrusion 無効
+                     p = 0
+                  end
+                  set_attr(lpv, attr_ruby_maxprep, -p)
+               end
+               if Nq.prev_ruby then
+                  set_attr(lp, attr_ruby, Nq.prev_ruby)
+               end
+            elseif has_attr(lpv, attr_ruby_maxprep) < 0 then -- auto
+               if Nq.char == 'parbdd' then
+                  local p = round((ltjs.table_current_stack[RIPRE-1] or 0)
+                                     *has_attr(lpv, attr_ruby))
+                  p = min(p, Nq.width)
+                 if has_attr(lpv, attr_ruby_mode)%2 == 0 then -- intrusion 無効
+                     p = 0
+                  end
+                  set_attr(lpv, attr_ruby_maxprep, p)
+               else
+                  set_attr(lpv, attr_ruby_maxprep, 0)
                end
-               set_attr(lpv, attr_ruby_maxprep, p)
-            end
-            if Nq.prev_ruby then
-               set_attr(lp, attr_ruby, Nq.prev_ruby)
             end
          elseif has_attr(lpv, attr_ruby_maxprep) < 0 then -- auto
             set_attr(lpv, attr_ruby_maxprep, 0)
@@ -750,9 +761,6 @@ do
 	       if has_attr(nqnv, attr_ruby_mode)%4 >= 2 then
 		  set_attr(nqnv, attr_ruby_maxprep, 0)
 	       end
-	       --if Np and Np.id == id_pbox_w then
-		--  set_attr(nqnv, attr_ruby_maxprep, 0)
-	       --end
 	    end
          end
 	 return true