GNU bug report logs - #7408
23.2.1 dolist -- subr.el and cl-macs differ with nil-block return

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From: jari <jari.aalto <at> cante.net>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 7408 <at> debbugs.gnu.org
Subject: bug#7408: 23.2.1 dolist -- subr.el and cl-macs differ with nil-block return
Date: Sun, 21 Nov 2010 11:08:48 +0200

On 2010-11-21 00:45, Stefan Monnier wrote:
| >     $ emacs -Q
| 
| >     (progn
| >       (autoload 'return "cl-macs" nil nil 'macro)
| >       (dolist (elt '(1 2))
| >         (return elt)))
| 
| This causes cl-macs to be run at an unexpected time.  I.e. it's ruled
| out for being a contrived example. 

Is the above code not valid? Does it not do what it is supposed to do;
to define `return' when it will be used for the first time?

| E.g. I'd be *really* surprised if it were an example you bumped into
| before this discussion.

Surprise or not, it demonstrates the defiency of claimed:

    - "dolist and dotimes are 100% compatible with CL's definition."

The question is not about "missing return", but differing dolist
implementation in subr.el

Jari

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