core/autoload/memoize: another refactor (restore doom-memoize)

core/autoload/memoize.el

@@ -6,23 +6,25 @@
   "A lookup table containing memoized functions. The keys are argument lists,
 and the value is the function's return value.")
 
-(defsubst doom--memoize-wrap (name)
-  "Return the memoized version of FUNC."
+;;;###autoload
+(defun doom-memoize (name)
+  "Memoizes an existing function. NAME is a symbol."
   (let ((func (symbol-function name)))
+    (put name 'function-documentation
+         (concat (documentation func) " (memoized)"))
+    (fset name
           `(lambda (&rest args)
-       ,(documentation name)
              (let ((key (cons ',name args)))
                (or (gethash key doom-memoized-table)
-             (puthash key (apply ',func args) doom-memoized-table))))))
+                   (puthash key (apply ',func args)
+                            doom-memoized-table)))))))
 
 ;;;###autoload
 (defmacro def-memoized! (name arglist &rest body)
   "Create a memoize'd function. NAME, ARGLIST, DOCSTRING and BODY
 have the same meaning as in `defun'."
   (declare (indent defun) (doc-string 3))
-  (when (stringp (car body))
-    (setcar body (concat (car body) " (memoized)")))
   `(progn
      (defun ,name ,arglist ,@body)
-     (fset ',name (doom--memoize-wrap ',name))))
+     (doom-memoize ',name)))