GNU bug report logs - #28958
26.0.90; Edebug can't step into methods defined with cl-defgeneric

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Gemini Lasswell <gazally <at> runbox.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 26.0.90; Edebug can't step into methods defined with cl-defgeneric
Date: Mon, 23 Oct 2017 12:04:21 -0700

Edebug can't find generic methods to step into when they are defined
with cl-defgeneric instead of cl-defmethod.

To reproduce, put the following code into *scratch* and eval-buffer
it:

(cl-defgeneric my-func (x)
  (:method ((x integer)) (message "%s is an integer" x))
  (:method ((x string)) (message "%s is a string" x))
  (message "%s is something else" x))

(defun use-my-func ()
  (my-func "hello")
  (my-func 3)
  (my-func 'foo))

Then navigate to the definition of use-my-func and:

C-u C-M-x
M-: (use-my-func) RET
i

Result: "Don’t know where ‘(my-func nil t)’ is defined"

Message #8 received at 28958 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Gemini Lasswell <gazally <at> runbox.com>
Cc: 28958 <at> debbugs.gnu.org
Subject: Re: bug#28958: 26.0.90; Edebug can't step into methods defined with
 cl-defgeneric
Date: Sun, 14 Jul 2019 23:28:54 +0200

Gemini Lasswell <gazally <at> runbox.com> writes:

> To reproduce, put the following code into *scratch* and eval-buffer
> it:
>
> (cl-defgeneric my-func (x)
>   (:method ((x integer)) (message "%s is an integer" x))
>   (:method ((x string)) (message "%s is a string" x))
>   (message "%s is something else" x))
>
> (defun use-my-func ()
>   (my-func "hello")
>   (my-func 3)
>   (my-func 'foo))
>
> Then navigate to the definition of use-my-func and:
>
> C-u C-M-x
> M-: (use-my-func) RET
> i

I'm unable to reproduce this on the Emacs trunk, and I see that the
debug definition has changed substantially since 26.0, so I'm closing
this bug report.  If this still is a problem, please reopen.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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