X-Git-Url: http://git.osdn.jp/view?a=blobdiff_plain;f=src%2Fltj-jfont.lua;h=ccff2ee947c08234ce1a77c5b9f63bb3dbf8d18a;hb=4cf1b5c0e1c4261cda265d7d98593c5021fa8758;hp=d58f4de72c2dacca0a89536170c64a27ebd33912;hpb=27609d55b31cf084416b897ef51701ae117166ae;p=luatex-ja%2Fluatexja.git

diff --git a/src/ltj-jfont.lua b/src/ltj-jfont.lua
index d58f4de..ccff2ee 100644
--- a/src/ltj-jfont.lua
+++ b/src/ltj-jfont.lua
@@ -3,15 +3,16 @@
 --
 luatexbase.provides_module({
   name = 'luatexja.jfont',
-  date = '2014/01/23',
+  date = '2014/08/12',
   description = 'Loader for Japanese fonts',
 })
 module('luatexja.jfont', package.seeall)
 
 luatexja.load_module('base');      local ltjb = luatexja.base
 luatexja.load_module('charrange'); local ltjc = luatexja.charrange
+luatexja.load_module('rmlgbm');    local ltjr = luatexja.rmlgbm
+luatexja.load_module('direction'); local ltjd = luatexja.direction
 
-local mem_leak_glue, mem_leak_gs, mem_leak_kern = 0, 0, 0
 
 local Dnode = node.direct or node
 
@@ -33,6 +34,7 @@ local font_getfont = font.getfont
 
 local attr_icflag = luatexbase.attributes['ltj@icflag']
 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
+local attr_curtfnt = luatexbase.attributes['ltj@curtfnt']
 local id_glyph = node.id('glyph')
 local id_kern = node.id('kern')
 local id_glue_spec = node.id('glue_spec')
@@ -52,12 +54,13 @@ luatexbase.create_callback("luatexja.load_jfm", "data", function (ft, jn) return
 
 local jfm_file_name, jfm_var
 local defjfm_res
+local jfm_dir
 
 function define_jfm(t)
    local real_char -- Does current character class have the 'real' character?
-   if t.dir~='yoko' then
+   if t.dir~=jfm_dir then
       defjfm_res= nil; return
-   elseif type(t.zw)~='number' or type(t.zh)~='number' then 
+   elseif type(t.zw)~='number' or type(t.zh)~='number' then
       defjfm_res= nil; return
    end
    t.char_type = {}; t.chars = {}
@@ -69,44 +72,47 @@ function define_jfm(t)
 	 else
 	    real_char = false
 	    for j,w in pairs(v.chars) do
-	       if type(w) == 'number' then
+	       if type(w) == 'number' and w~=-1 then
 		  real_char = true;
 	       elseif type(w) == 'string' and utf.len(w)==1 then
 		  real_char = true; w = utf.byte(w)
 	       elseif type(w) == 'string' and utf.len(w)==2 and utf.sub(w,2) == '*' then
 		  real_char = true; w = utf.byte(utf.sub(w,1,1))
-                  if not t.chars[-w] then 
+                  if not t.chars[-w] then
                      t.chars[-w] = i
-                  else 
+                  else
                      defjfm_res= nil; return
                   end
 	       end
 	       if not t.chars[w] then
 		  t.chars[w] = i
-	       else 
+	       else
 		  defjfm_res= nil; return
 	       end
 	    end
-            if type(v.align)~='string' then 
+            if type(v.align)~='string' then
                v.align = 'left' -- left
             end
 	    if real_char then
-	       if not (type(v.width)=='number' or v.width~='prop') then
+	       if type(v.width)~='number' and v.width~='prop' then
 		  defjfm_res= nil; return
 	       else
+		  if v.width=='prop' and jfm_dir=='tate' then
+		     v.width = 1.0
+		  end
 		  if type(v.height)~='number' then
 		     v.height = 0.0
 		  end
 		  if type(v.depth)~='number' then
 		     v.depth = 0.0
 		  end
-		  if type(v.italic)~='number' then 
+		  if type(v.italic)~='number' then
 		     v.italic = 0.0
 		  end
-		  if type(v.left)~='number' then 
+		  if type(v.left)~='number' then
 		     v.left = 0.0
 		  end
-		  if type(v.down)~='number' then 
+		  if type(v.down)~='number' then
 		     v.down = 0.0
 		  end
 	       end
@@ -118,9 +124,9 @@ function define_jfm(t)
 	    if v.kern[j] then defjfm_res= nil; return end
 	 end
 	 for j,x in pairs(v.kern) do
-	    if type(x)=='number' then 
+	    if type(x)=='number' then
                v.kern[j] = {x, 0}
-            elseif type(x)=='table' then 
+            elseif type(x)=='table' then
                v.kern[j] = {x[1], x[2] or 0}
             end
 	 end
@@ -150,7 +156,7 @@ do
 	 return new
       else return nil end
    end
-   
+
    update_jfm_cache = function (j,sz)
       if metrics[j].size_cache[sz] then return end
       local t = {}
@@ -158,10 +164,11 @@ do
       t.chars = metrics[j].chars
       t.char_type = mult_table(metrics[j].char_type, sz)
       for i,v in pairs(t.char_type) do
+	 v.align = (v.align=='left') and 0 or
+	    ((v.align=='right') and 1 or 0.5)
 	 if type(i) == 'number' then -- char_type
 	    for k,w in pairs(v.glue) do
 	       local h = node_new(id_glue_spec)
-mem_leak_gs = mem_leak_gs+1
 	       v[k] = {true, h, (w[5] and w[5]/sz or 0), FROM_JFM + (w[4] and w[4]/sz or 0)}
 	       setfield(h, 'width', w[1])
 	       setfield(h, 'stretch', w[2])
@@ -171,13 +178,13 @@ mem_leak_gs = mem_leak_gs+1
 	    end
 	    for k,w in pairs(v.kern) do
 	       local g = node_new(id_kern)
-mem_leak_kern = mem_leak_kern +1
 	       setfield(g, 'kern', w[1])
 	       setfield(g, 'subtype', 1)
 	       set_attr(g, attr_icflag, FROM_JFM)
 	       v[k] = {false, g, w[2]/sz}
 	    end
 	 end
+	 v.glue, v.kern = nil, nil
       end
       t.kanjiskip = mult_table(metrics[j].kanjiskip, sz)
       t.xkanjiskip = mult_table(metrics[j].xkanjiskip,sz)
@@ -186,15 +193,15 @@ mem_leak_kern = mem_leak_kern +1
    end
 end
 
-luatexbase.create_callback("luatexja.find_char_class", "data", 
+luatexbase.create_callback("luatexja.find_char_class", "data",
 			   function (arg, fmtable, char)
 			      return 0
 			   end)
 
 function find_char_class(c,m)
--- c: character code, m: 
+-- c: character code, m:
    if not m then return 0 end
-   return m.chars[c] or 
+   return m.chars[c] or
       luatexbase.call_callback("luatexja.find_char_class", 0, m, c)
 end
 
@@ -207,14 +214,14 @@ do
    local cstemp
    local global_flag -- true if \globaljfont, false if \jfont
    local function load_jfont_metric()
-      if jfm_file_name=='' then 
+      if jfm_file_name=='' then
 	 ltjb.package_error('luatexja',
 			    'no JFM specified',
 			    'To load and define a Japanese font, a JFM must be specified.'..
 			    "The JFM 'ujis' will be  used for now.")
 	 jfm_file_name='ujis'
       end
-      for j,v in ipairs(metrics) do 
+      for j,v in ipairs(metrics) do
 	 if v.name==jfm_file_name then return j end
       end
       luatexja.load_lua('jfm-' .. jfm_file_name .. '.lua')
@@ -222,7 +229,7 @@ do
 	 defjfm_res.name = jfm_file_name
 	 table.insert(metrics, defjfm_res)
 	 return #metrics
-      else 
+      else
 	 return nil
       end
    end
@@ -232,105 +239,137 @@ do
       local t = token.get_next()
       cstemp=token.csname_name(t)
       global_flag = g and '\\global' or ''
-      tex.sprint(cat_lp, '\\expandafter\\font\\csname ' .. cstemp .. '\\endcsname')
+      tex.sprint(cat_lp, '\\expandafter\\font\\csname ', cstemp, '\\endcsname')
    end
-   
+
    luatexbase.create_callback("luatexja.define_jfont", "data", function (ft, fn) return ft end)
 
 -- EXT
-   function jfontdefY() -- for horizontal font
-      local j = load_jfont_metric()
+   local identifiers = fonts.hashes.identifiers
+   function jfontdefY(dir)
+      jfm_dir = dir
+      local j = load_jfont_metric(dir)
       local fn = font.id(cstemp)
       local f = font_getfont(fn)
-      if not j then 
+      if not j then
 	 ltjb.package_error('luatexja',
 			    "bad JFM `" .. jfm_file_name .. "'",
 			    'The JFM file you specified is not valid JFM file.\n'..
 			       'So defining Japanese font is cancelled.')
-	 tex.sprint(cat_lp, global_flag .. '\\expandafter\\let\\csname ' ..cstemp 
-		       .. '\\endcsname=\\relax')
-	 return 
+	 tex.sprint(cat_lp, global_flag, '\\expandafter\\let\\csname ', cstemp,
+		       '\\endcsname=\\relax')
+	 return
       end
       update_jfm_cache(j, f.size)
-      --print('MEMORY LEAK (acc): ', mem_leak_glue, mem_leak_gs, mem_leak_kern)
+      local ad = identifiers[fn].parameters
       local sz = metrics[j].size_cache[f.size]
-      local fmtable = { jfm = j, size = f.size, var = jfm_var, 
-			zw = sz.zw, zh = sz.zh, 
+      local fmtable = { jfm = j, size = f.size, var = jfm_var,
+			zw = sz.zw, zh = sz.zh,
+			ascent = ad.ascender,
+			descent = ad.descender,
 			chars = sz.chars, char_type = sz.char_type,
-			kanjiskip = sz.kanjiskip, xkanjiskip = sz.xkanjiskip, 
+			kanjiskip = sz.kanjiskip, xkanjiskip = sz.xkanjiskip,
       }
-      
+
       fmtable = luatexbase.call_callback("luatexja.define_jfont", fmtable, fn)
       font_metric_table[fn]=fmtable
-      tex.sprint(cat_lp, global_flag .. '\\protected\\expandafter\\def\\csname ' 
-		    .. cstemp  .. '\\endcsname{\\ltj@curjfnt=' .. fn .. '\\relax}')
+      tex.sprint(cat_lp, global_flag, '\\protected\\expandafter\\def\\csname ',
+		    cstemp , '\\endcsname{\\ltj@cur'..
+		    (dir == 'yoko' and 'j' or 't') .. 'fnt', fn, '\\relax}')
    end
 end
 
 do
--- EXT: zw, zh
-   function load_zw()
-      local a = font_metric_table[tex.attribute[attr_curjfnt]]
-      tex.setdimen('ltj@zw', a and a.zw or 0)
+   local get_dir_count = ltjd.get_dir_count
+   local dir_tate = luatexja.dir_table.dir_tate
+   local tex_get_attr = tex.getattribute
+   -- PUBLIC function
+   function get_zw()
+      local a = font_metric_table[
+	 tex_get_attr((get_dir_count()==dir_tate) and attr_curtfnt or attr_curjfnt)]
+      return a and a.zw or 0
    end
-   
-   function load_zh()
-      local a = font_metric_table[tex.attribute[attr_curjfnt]]
-      tex.setdimen('ltj@zh', a and a.zh or 0)
+   function get_zh()
+      local a = font_metric_table[
+	 tex_get_attr((get_dir_count()==dir_tate) and attr_curtfnt or attr_curjfnt)]
+      return a and a.zw or 0
    end
 end
 
 do
    -- extract jfm_file_name and jfm_var
+   -- normalize position of 'jfm=' and 'jfmvar=' keys
    local function extract_metric(name)
-      local basename=name
-      local tmp = utf.sub(basename, 1, 5)
       jfm_file_name = ''; jfm_var = ''
+      local tmp, index = name:sub(1, 5), 1
       if tmp == 'file:' or tmp == 'name:' or tmp == 'psft:' then
-	 basename = utf.sub(basename, 6)
+	 index = 6
       end
-      local p = utf.find(basename, ":")
-      if p then 
-	 basename = utf.sub(basename, p+1)
-      else return 
+      local p = name:find(":", index); index = p and (p+1) or index
+      while index do
+	 local l = name:len()+1
+	 local q = name:find(";", index+1) or l
+	 if name:sub(index, index+3)=='jfm=' and q>index+4 then
+	    jfm_file_name = name:sub(index+4, q-1)
+	    if l~=q then
+	       name = name:sub(1,index-1) .. name:sub(q+1)
+	    else
+	       name = name:sub(1,index-1)
+	       index = nil
+	    end
+	 elseif name:sub(index, index+6)=='jfmvar=' and q>index+6 then
+	    jfm_var = name:sub(index+7, q-1)
+	    if l~=q then
+	       name = name:sub(1,index-1) .. name:sub(q+1)
+	    else
+	       name = name:sub(1,index-1)
+	       index = nil
+	    end
+	 else
+	    index = (l~=q) and (q+1) or nil
+	 end
       end
-      -- now basename contains 'features' only.
-      p=1
-      while p do
-	 local q = utf.find(basename, ";", p+1) or utf.len(basename)+1
-	 if utf.sub(basename, p, p+3)=='jfm=' and q>p+4 then
-	    jfm_file_name = utf.sub(basename, p+4, q-1)
-	 elseif utf.sub(basename, p, p+6)=='jfmvar=' and q>p+6 then
-	    jfm_var = utf.sub(basename, p+7, q-1)
+      if jfm_file_name~='' then
+	 local l = name:sub(-1)
+	 name = name 
+	    .. ((l==':' or l==';') and '' or ';')
+	    .. 'jfm=' .. jfm_file_name
+	 if jfm_var~='' then
+	    name = name .. 'jfmvar=' .. jfm_var
 	 end
-	 if utf.len(basename)+1==q then p = nil else p = q + 1 end
       end
-      return
+      return name
    end
-   
-   -- replace fonts.define.read()
-   function font_callback(name, size, id, fallback)
-      extract_metric(name)
-      -- In the present imple., we don't remove "jfm=..." from name.
-      return fallback(name, size, id)
+
+   -- define_font callback
+   local otfl_fdr = fonts.definers.read
+   local ltjr_font_callback = ltjr.font_callback
+   function luatexja.font_callback(name, size, id)
+      local new_name = extract_metric(name)
+      local res =  ltjr_font_callback(new_name, size, id, otfl_fdr)
+      luatexbase.call_callback('luatexja.define_font', res, new_name, size, id)
+      return res
    end
+   luatexbase.create_callback('luatexja.define_font', 'simple', function (n) return n end)
+   luatexbase.add_to_callback('define_font',luatexja.font_callback,"luatexja.font_callback", 1)
 end
 
 ------------------------------------------------------------------------
 -- LATEX INTERFACE
 ------------------------------------------------------------------------
 do
+   -- these function are called from ltj-latex.sty
    local kyenc_list, ktenc_list = {}, {}
    function add_kyenc_list(enc) kyenc_list[enc] = 'true ' end
    function add_ktenc_list(enc) ktenc_list[enc] = 'true ' end
    function is_kyenc(enc)
       tex.sprint(cat_lp, '\\let\\ifin@\\if' .. (kyenc_list[enc] or 'false '))
    end
-   function is_kyenc(enc) 
-      tex.sprint(cat_lp, '\\let\\ifin@\\if' .. (kyenc_list[enc] or 'false '))
+   function is_ktenc(enc)
+      tex.sprint(cat_lp, '\\let\\ifin@\\if' .. (ktenc_list[enc] or 'false '))
    end
-   function is_kenc(enc) 
-      tex.sprint(cat_lp, '\\let\\ifin@\\if' 
+   function is_kenc(enc)
+      tex.sprint(cat_lp, '\\let\\ifin@\\if'
 		 .. (kyenc_list[enc] or ktenc_list[enc] or 'false '))
    end
 
@@ -344,10 +383,10 @@ do
       Nkfam_list[enc][fam] = 'true '
    end
    function is_kfam(enc, fam)
-      tex.sprint(cat_lp, '\\let\\ifin@\\if' 
+      tex.sprint(cat_lp, '\\let\\ifin@\\if'
 		 .. (kfam_list[enc] and kfam_list[enc][fam] or 'false ')) end
    function is_Nkfam(enc, fam)
-      tex.sprint(cat_lp, '\\let\\ifin@\\if' 
+      tex.sprint(cat_lp, '\\let\\ifin@\\if'
 		 .. (Nkfam_list[enc] and Nkfam_list[enc][fam] or 'false ')) end
 
    local ffam_list, Nffam_list = {}, {}
@@ -360,10 +399,10 @@ do
       Nffam_list[enc][fam] = 'true '
    end
    function is_ffam(enc, fam)
-      tex.sprint(cat_lp, '\\let\\ifin@\\if' 
+      tex.sprint(cat_lp, '\\let\\ifin@\\if'
 		 .. (ffam_list[enc] and ffam_list[enc][fam] or 'false ')) end
    function is_Nffam(enc, fam)
-      tex.sprint(cat_lp, '\\let\\ifin@\\if' 
+      tex.sprint(cat_lp, '\\let\\ifin@\\if'
 		 .. (Nffam_list[enc] and Nffam_list[enc][fam] or 'false ')) end
 end
 ------------------------------------------------------------------------
@@ -380,7 +419,7 @@ function set_alt_font(b,e,ind,bfnt)
    -- ind: 新フォント, bfnt: 基底フォント
    if b>e then b, e = e, b end
    if b*e<=0 then
-      ltjb.package_eror('luatexja',
+      ltjb.package_error('luatexja',
 			'bad character range ([' .. b .. ',' .. e .. ']). ' ..
 			   'I take the intersection with [0x80, 0x10ffff].')
       b, e = math.max(0x80,b),math.min(ucs_out-1,e)
@@ -411,7 +450,7 @@ end
 
 -- EXT
 function clear_alt_font(bfnt)
-   if alt_font_table[bfnt] then 
+   if alt_font_table[bfnt] then
       local t = alt_font_table[bfnt]
       for i,_ in pairs(t) do t[i]=nil; end
    end
@@ -431,7 +470,7 @@ local alt_font_table_latex = {}
 function clear_alt_font_latex(bbase)
    local t = alt_font_table_latex[bbase]
    if t then
-      for j,v in pairs(t) do t[j] = nil end 
+      for j,v in pairs(t) do t[j] = nil end
    end
 end
 
@@ -440,7 +479,7 @@ function set_alt_font_latex(b,e,ind,bbase)
    -- ind: Alt font の enc/fam/ser/shape, bbase: 基底フォントの enc/fam/ser/shape
    if b>e then b, e = e, b end
    if b*e<=0 then
-      ltjb.package_eror('luatexja',
+      ltjb.package_error('luatexja',
 			'bad character range ([' .. b .. ',' .. e .. ']). ' ..
 			   'I take the intersection with [0x80, 0x10ffff].')
       b, e = math.max(0x80,b),math.min(ucs_out-1,e)
@@ -488,17 +527,21 @@ do
    end
 
 -- EXT
-   function output_alt_font_cmd(bbase)
+   function output_alt_font_cmd(dir, bbase)
       alt_font_base = bbase
-      alt_font_base_num = tex.getattribute(attr_curjfnt)
+      if dir == 't' then
+	 alt_font_base_num = tex.getattribute(attr_curtfnt)
+      else
+	 alt_font_base_num = tex.getattribute(attr_curjfnt)
+      end	    
       local t = alt_font_table[alt_font_base_num]
-      if t then 
+      if t then
          for i,_ in pairs(t) do t[i]=nil end
       end
       t = alt_font_table_latex[bbase]
       if t then
-         for i,_ in pairs(t) do
-            tex.sprint(cat_lp, '\\ltj@pickup@altfont@aux{' .. i .. '}')
+       for i,_ in pairs(t) do
+            tex.sprint(cat_lp, '\\ltj@pickup@altfont@aux' .. dir .. '{' .. i .. '}')
          end
       end
    end
@@ -512,10 +555,10 @@ do
                           .. '\\csname ' .. i .. '/' .. size_str .. '\\endcsname{' .. i .. '}')
          end
       end
-   end 
+   end
 
    local function pickup_alt_font_class(class, afnt_num, afnt_chars)
-      local t  = alt_font_table[alt_font_base_num] 
+      local t  = alt_font_table[alt_font_base_num]
       local tx = font_metric_table[alt_font_base_num].chars
       for i,v in pairs(tx) do
          if v==class and afnt_chars[i] then t[i]=afnt_num end
@@ -530,11 +573,11 @@ do
       for i,v in pairs(alt_font_table_latex[alt_font_base]) do
          if i == afnt_base then
             for j,_ in pairs(v) do
-               if j>=0 then 
+               if j>=0 then
                   if ac[j] then t[j]=afnt_num end
                else  -- -n (n>=1) means that the character class n,
-                     -- which is defined in the JFM 
-                  pickup_alt_font_class(-j, afnt_num, ac) 
+                     -- which is defined in the JFM
+                  pickup_alt_font_class(-j, afnt_num, ac)
                end
             end
             return
@@ -546,32 +589,93 @@ end
 
 
 ------------------------------------------------------------------------
--- MISC
+-- 縦書き用字形への変換テーブル
 ------------------------------------------------------------------------
+local font_vert_table = {} -- key: fontnumber
+do
+   local font_vert_basename = {} -- key: basename
+   local function add_feature_table(tname, src, dest)
+      for i,v in pairs(src) do
+	 if type(v.slookups)=='table' then
+	    local s = v.slookups[tname]
+	    if s and not dest[i] then
+	       dest[i] = s
+	    end
+	 end
+      end
+   end
 
-local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
--- EXT: italic correction
-function append_italic()
-   local p = to_direct(tex.nest[tex.nest.ptr].tail)
-   if p and getid(p)==id_glyph then
-      local f = getfont(p)
-      local g = node_new(id_kern)
-      setfield(g, 'subtype', 1)
-      set_attr(g, attr_icflag, ITALIC)
-      if is_ucs_in_japanese_char(p) then
-	 f = has_attr(p, attr_curjfnt)
-	 local j = font_metric_table[f]
-	 setfield(g, 'kern', j.char_type[find_char_class(getchar(p), j)].italic)
-      else
-	 local h = font_getfont(f)
-	 if h then
-	    setfield(g, 'kern', h.characters[getchar(p)].italic)
+   local function prepare_vert_data(n, id)
+      -- test if already loaded
+      if type(id)=='number' then -- sometimes id is an integer
+         font_vert_table[n] = font_vert_table[id]; return
+      elseif (not id) or font_vert_table[n]  then return
+      end
+      local fname = id.filename
+      local bname = file.basename(fname)
+      if not fname then
+         font_vert_table[n] = {}; return
+      elseif font_vert_basename[bname] then
+         font_vert_table[n] = font_vert_basename[bname]; return
+      end
+      local vtable = {}
+      local a = id.resources.sequences
+      if a then
+	 local s = id.shared.rawdata.descriptions
+	 for i,v in pairs(a) do
+	    if v.features.vert or v.features.vrt2 then
+	       add_feature_table(v.subtables[1], s, vtable)
+	    end
+	 end
+      end
+      font_vert_basename[bname] = vtable
+      font_vert_table[n] = vtable
+   end
+   -- 縦書き用字形への変換
+   function get_vert_glyph(n, chr)
+      local fn = font_vert_table[n]
+      return fn and fn[chr] or chr
+   end
+   luatexbase.add_to_callback('luatexja.define_font',
+			      function (res, name, size, id)
+				 prepare_vert_data(id, res)
+			      end,
+			      'prepare_vert_data', 1)
+
+   local function a (n, dat) font_vert_table[n] = dat end
+   ltjr.vert_addfunc = a
+
+end
+
+------------------------------------------------------------------------
+-- MISC
+------------------------------------------------------------------------
+do
+   local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
+   local tex_set_attr = tex.setattribute
+   -- EXT: italic correction
+   function append_italic()
+      local p = to_direct(tex.nest[tex.nest.ptr].tail)
+      if p and getid(p)==id_glyph then
+	 local f = getfont(p)
+	 local g = node_new(id_kern)
+	 setfield(g, 'subtype', 1)
+	 set_attr(g, attr_icflag, ITALIC)
+	 if is_ucs_in_japanese_char(p) then
+	    f = has_attr(p, attr_curjfnt)
+	    local j = font_metric_table[f]
+	    setfield(g, 'kern', j.char_type[find_char_class(getchar(p), j)].italic)
 	 else
-	    tex.attribute[attr_icflag] = 0
-	    return node_free(g)
+	    local h = font_getfont(f)
+	    if h then
+	       setfield(g, 'kern', h.characters[getchar(p)].italic)
+	    else
+	       tex_set_attr(attr_icflag, 0)
+	       return node_free(g)
+	    end
 	 end
+	 node_write(g)
+	 tex_set_attr(attr_icflag, 0)
       end
-      node_write(g)
-      tex.attribute[attr_icflag] = 0
    end
 end