Translating scripts back into steps

[Ofnuts]

Nothing for this purpose. ... But what you can do, however, is:

• remove the calls that alter the undo stack (usually, undo_group_start() and undo_group_end(), that put all the script actions into a single undo/redo step).
  
• play the script (with a big undo stack...)
  
• undo  (Ctr-Z) repeatedly until you are back to the initial state,
  
• play the Gimp actions step by step using Edit>Redo (Ctrl-Y).
  

If there are too many steps, you won't be able to redo them manually anyway