show correct dialog when the player uses an older formspec version; note: does not cover editing

functions.lua

@@ -815,6 +815,7 @@ yl_speak_up.get_fs_talkdialog = function(player, n_id, d_id, alternate_text)
     if(yl_speak_up.npc_owner[ n_id ]) then
         owner_info = "\n\n(owned by "..minetest.formspec_escape(yl_speak_up.npc_owner[ n_id ])..")"
     end
+
     if formspec_v >= 4 then
         formspec = {
             "formspec_version[3]",
@@ -1234,6 +1235,9 @@ yl_speak_up.get_fs_talkdialog = function(player, n_id, d_id, alternate_text)
         table.insert(formspec, "scroll_container_end[]")
 
         table.insert(formspec, "container_end[]")
+
+    -- if the player has an older formspec version
+    -- TODO: the version for older formspec versions lacks quite a lot - in particular regarding editing
     else
         minetest.log(
             "info",
@@ -1254,6 +1258,12 @@ yl_speak_up.get_fs_talkdialog = function(player, n_id, d_id, alternate_text)
             upgrade_warning = table.concat(warn, "")
         end
 
+        if(alternate_text) then
+	    alternate_text = string.gsub(alternate_text, "%$TEXT%$", active_dialog.d_text)
+        end
+        -- replace $NPC_NAME$ etc.
+        local t = minetest.formspec_escape(yl_speak_up.replace_vars_in_text(
+				(alternate_text or active_dialog.d_text), dialog, pname))
         formspec = {
             "formspec_version[1]",
             "size[48,28]",
@@ -1303,7 +1313,7 @@ yl_speak_up.get_fs_talkdialog = function(player, n_id, d_id, alternate_text)
             portrait,
             "]",
             "textarea[0.5,5;19.6,13.5;;;",
-            minetest.formspec_escape(active_dialog.d_text) .. "\n",
+            t .. "\n",
             "]",
             "container[0,18]"
         }