Subject: Re: bug#20517: define-modify-macro: void function: cl--arglist-args

From: Stefan Monnier <[email-masked]>
Date: Wed, 06 May 2015 17:47:25 -0400

>> foo.el:3:1:Error: Symbol's function definition is void: cl--arglist-args
>> ;; foo.el:
>> (eval-when-compile (require 'cl))
>> (define-modify-macro foo (&optional (n 1)) +)

> Looks like I messed up this part when switching to gv.el.
> But since noone noticed until now, I guess we should simply remove
> define-modify-macro.

Oh, wait, no, it looks like the problem is just that cl--arglist-args
is not autoloaded from cl-macs.el.  So the compilation will succeed if
you use a CL macro before wetting to the define-modify-macro.

Should be fixed now,

        Stefan