+ | MatitaEngine.CircularDependency fname ->
+ None, "Circular dependency including " ^ fname
+ | MatitaEngine.TryingToAdd msg ->
+ None, "Attempt to insert an alias in batch mode: " ^ Lazy.force msg
+ | MatitaEngine.AlreadyLoaded msg ->
+ None, "The file " ^ Lazy.force msg ^ " needs recompilation but it is
+ already loaded; undo the inclusion and try again."
+ | MatitaEngine.FailureCompiling (filename,exn) ->
+ None, "Compiling " ^ filename ^ ":\n" ^ snd (to_string exn)