Adjust to_text interface

luamml-amsmath.lua

@@ -43,7 +43,7 @@ token.set_lua('__luamml_amsmath_save_tag:', funcid, 'protected')
 lua.get_functions_table()[funcid] = function()
   local nest = tex.nest.top
   local chars = {}
-  last_tag = {[0] = 'mtext', to_text(nest.head)}
+  last_tag = to_text(nest.head)
 end
 
 funcid = luatexbase.new_luafunction'__luamml_amsmath_set_tag:'

luamml-array.lua

@@ -48,7 +48,7 @@ lua.get_functions_table()[funcid] = function()
   else
     -- Oh no, we got text. Let't complain to the user, it's probably their fault
     print'We are mathematicians, don\'t bother us with text'
-    store_column_xml{[0] = 'mtext', to_text(startmath, tex.nest.top.tail)}
+    store_column_xml(to_text(startmath, tex.nest.top.tail))
   end
 end
 

luamml-convert.lua

@@ -89,7 +89,7 @@ local function kernel_to_table(kernel, cur_style)
     return result, result
   elseif id == sub_box_t then
     if kernel.list.id == hlist_t then -- We directly give up for vlists
-      local result = {[0] = 'mtext', to_text(kernel.list.head)}
+      local result = to_text(kernel.list.head)
       return result, result
     else
       local result = {[0] = 'mi', {[0] = 'mglyph', ['tex:box'] = kernel.list}}

luamml-lr.lua

@@ -57,7 +57,7 @@ local function to_unicode(head, tail)
       end -- CHECK: Everything else can probably be ignored, otherwise shout at me
     end
   end
-  return table.concat(result)
+  return {[0] = 'mtext', table.concat(result)}
 end
 
 return to_unicode