ltj-direction.lua: added pre_output_filter callback to set direction of \box255 ...

diff --git a/src/ltj-direction.lua b/src/ltj-direction.lua
index fba6cd3..9e585f1 100644 (file)
--- a/src/ltj-direction.lua
+++ b/src/ltj-direction.lua
@@ -367,6 +367,7 @@ do
       if b then
         local box_dir = get_box_dir(to_direct(b), dir_yoko)
         if box_dir%dir_node_auto ~= list_dir%dir_node_auto then
+            --print('unbox', reg_num, box_dir, list_dir)
            ltjb.package_error(
               'luatexja',
               "Incompatible direction list can't be unboxed",
@@ -834,3 +835,13 @@ do
                              dir_adjust_vpack,
                              'ltj.direction', 10000)
 end
+
+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', 
+                             dir_adjust_pre_output,
+                             'ltj.direction', 10000)
+
+end