Subject: bug#60450: 30.0.50; Strange behavior of compiler macros in *scratch*

From: Gerd Möllmann <[email-masked]>
Date: Sat, 31 Dec 2022 14:22:31 +0100

The doc string of cl-define-compiler-macro says

   "This is like ‘defmacro’, but macro expansion occurs only if the call 
to FUNC is compiled (i.e., not interpreted)."

Evaluate the following compiler macro and function in *scratch*:

(cl-define-compiler-macro foo ()
   1)

(defun foo ()
   2)

Then:

(eval '(foo))
   => 2

(foo)C-j
   => 1

C-j is bound to eval-print-last-sexp, which I wouldn't expect to compile 
anything, and its doc string doesn't mention anything AFAICS.  Not sure 
if that's a bug in the code or something missing in the docs.