Move test that macro do not mutate functions as optional in stepA

process/guide.md

@@ -1537,6 +1537,10 @@ diff -urp ../process/step9_try.txt ../process/stepA_mal.txt
     result of reading the next next form (2nd argument) (`read_form`) and the
     next form (1st argument) in that order
     (metadata comes first with the ^ macro and the function second).
+  * If you implemented as `defmacro!` to mutate an existing function
+    without copying it, you can now use the function copying mechanism
+    used for metadata to make functions immutable even in the
+    defmacro! case...
 
 * Add a new "\*host-language\*" (symbol) entry to your REPL
   environment. The value of this entry should be a mal string

tests/step8_macros.mal

@@ -172,11 +172,3 @@ x
 ;=>"MAL"
 (->> [4] (concat [3]) (concat [2]) rest (concat [1]))
 ;=>(1 3 4)
-
-;; Test that defining a macro does not mutate an existing function.
-(def! f (fn* [x] (number? x)))
-(defmacro! m f)
-(f (+ 1 1))
-;=>true
-(m (+ 1 1))
-;=>false

tests/stepA_mal.mal

@@ -279,3 +279,12 @@
 ;=>55
 (> (time-ms) start-time)
 ;=>true
+
+;;
+;; Test that defining a macro does not mutate an existing function.
+(def! f (fn* [x] (number? x)))
+(defmacro! m f)
+(f (+ 1 1))
+;=>true
+(m (+ 1 1))
+;=>false