[debbugs-tracker] bug#20639: closed (24.5; nesting cl-tagbody)

[GNU bug Tracking System]

Your message dated Mon, 25 May 2015 09:39:52 -0400
with message-id <address@hidden>
and subject line Re: bug#20639: 24.5; nesting cl-tagbody
has caused the debbugs.gnu.org bug report #20639,
regarding 24.5; nesting cl-tagbody
to be marked as done.

(If you believe you have received this mail in error, please contact
address@hidden)


-- 
20639: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=20639
GNU Bug Tracking System
Contact address@hidden with problems
> --- Begin Message ---
>
>
>
> Subject: 
>
> 24.5; nesting cl-tagbody
>
>
>
>
> Date: 
>
> Sun, 24 May 2015 11:56:30 +0800
>
>
>
>
> 1. eval the following
>
> (let ((c 10))
>   (cl-tagbody :next
>      (cl-tagbody :next
>         (print c)
>         (cl-decf c)
>         (when (zerop (mod c 2))
>           (go :next)))
>      (unless (<= c 0)
>        (go :next))))
>
> 2. if: No catch for tag: #:cl--tagbody-tag, :next
>
> Additionally eval the following
>
> (let ((c 10))
>   (cl-tagbody :next1
>      (cl-tagbody :next2
>         (print c)
>         (cl-decf c)
>         (when (zerop (mod c 2))
>           (go :next2)))
>      (unless (<= c 0)
>        (go :next1))))
>
> Error: cond: No catch for tag: #:cl--tagbody-tag, cl--exit
>
> Leo
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#20639: 24.5; nesting cl-tagbody
>
>
>
>
> Date: 
>
> Mon, 25 May 2015 09:39:52 -0400
>
>
>
>
> User-agent: 
>
> Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux)
>
>
>
>
> >   (cl-tagbody :next
> >      (cl-tagbody :next
>
> Yay!  Someone's using cl-tagbody!?
> I installed the patch below which should fix those problems,
>
>
>         Stefan
>
>
> diff --git a/lisp/emacs-lisp/cl-macs.el b/lisp/emacs-lisp/cl-macs.el
> index 27d3da3..636c543 100644
> --- a/lisp/emacs-lisp/cl-macs.el
> +++ b/lisp/emacs-lisp/cl-macs.el
> @@ -1786,7 +1786,8 @@ Labels have lexical scope and dynamic extent."
>        (unless (eq 'go (car-safe (car-safe block)))
>          (push `(go cl--exit) block))
>        (push (nreverse block) blocks))
> -    (let ((catch-tag (make-symbol "cl--tagbody-tag")))
> +    (let ((catch-tag (make-symbol "cl--tagbody-tag"))
> +          (cl--tagbody-alist cl--tagbody-alist))
>        (push (cons 'cl--exit catch-tag) cl--tagbody-alist)
>        (dolist (block blocks)
>          (push (cons (car block) catch-tag) cl--tagbody-alist))
>
>
> --- End Message ---