Master is merged into the dyn crossing lane again.

lib/dev.ml

@@ -1706,9 +1706,9 @@ let macro_loc tbl name = try Hashtbl.find tbl name with Not_found -> ""
 
 (* The prelude's [defmacro] forms, read once. [Macro.prelude_macros] holds only
    the names and [defs] wants the parameter vectors too, so the forms are kept
-   here — and kept lazily for the reason that one is: [Prelude.forms] re-reads
-   and re-parses the whole prelude on every call, and [defs] is asked on connect
-   and again after every accepted evaluation. *)
+   here, lazily: [Prelude.forms] reads the prelude once but still rebuilds its
+   forms on every call, and [defs] is asked on connect and again after every
+   accepted evaluation. *)
 let prelude_macro_forms =
   lazy
     (List.filter (fun f -> Macro.macro_name f <> None) (Prelude.forms ()))