X-Git-Url: http://git.osdn.jp/view?a=blobdiff_plain;f=src%2Fluatexja.lua;h=d6d83e61437022fae4f10e10e40194eeaa9d5ea2;hb=0f0921ced2b53537326ad20ce546020b3cae2670;hp=3aae0c9a4e4738de7424c552f225e2f0cdc72676;hpb=749c2555d189fa0873d18c479494616a920e8651;p=luatex-ja%2Fluatexja.git

diff --git a/src/luatexja.lua b/src/luatexja.lua
index 3aae0c9..d6d83e6 100644
--- a/src/luatexja.lua
+++ b/src/luatexja.lua
@@ -177,18 +177,23 @@ end
 
 -- EXT: print parameters that don't need arguments
 do
+   local tex_getattr = tex.getattribute
+   local function getattr(a)
+      local r = tex.getattribute(a)
+      return (r==-0x7FFFFFFF) and 0 or r
+   end 
    luatexja.unary_pars = {
       yalbaselineshift = function(t)
-	 return print_scaled(tex.getattribute('ltj@yablshift'))..'pt'
+	 return print_scaled(getattr('ltj@yablshift'))..'pt'
       end,
       yjabaselineshift = function(t)
-	 return print_scaled(tex.getattribute('ltj@ykblshift'))..'pt'
+	 return print_scaled(getattr('ltj@ykblshift'))..'pt'
       end,
       talbaselineshift = function(t)
-	 return print_scaled(tex.getattribute('ltj@tablshift'))..'pt'
+	 return print_scaled(getattr('ltj@tablshift'))..'pt'
       end,
       tjabaselineshift = function(t)
-	 return print_scaled(tex.getattribute('ltj@tkblshift'))..'pt'
+	 return print_scaled(getattr('ltj@tkblshift'))..'pt'
       end,
       kanjiskip = function(t)
 	 return print_spec(ltjs.get_stack_skip(stack_table_index.KSK, t))
@@ -200,10 +205,10 @@ do
 	 return ltjs.get_stack_table(stack_table_index.JWP, 0, t)
       end,
       autospacing = function(t)
-	 return tex.getattribute('ltj@autospc')
+	 return getattr('ltj@autospc')
       end,
       autoxspacing = function(t)
-	 return tex.getattribute('ltj@autoxspc')
+	 return getattr('ltj@autoxspc')
       end,
       differentjfm = function(t)
 	 local f, r = luatexja.jfmglue.diffmet_rule, '???'