New: pandoc-tex.sh and logging im lua filter

_extensions/diagram/diagram.lua

@@ -564,6 +564,7 @@ local function code_to_figure (conf)
     -- Check if a converter exists for this block. If not, return the block
     -- unchanged.
     local diagram_type = block.classes[1]
+    print("Diagram type: ", diagram_type)
     if not diagram_type then
       return nil
     end