From: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: emacs-devel@gnu.org
Subject: Re: push and pop
Date: Fri, 07 Jan 2005 15:23:38 -0500 [thread overview]
Message-ID: <jwvk6qphtxd.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <pan.2005.01.07.18.21.53.124866@as.arizona.edu> (JD Smith's message of "Fri, 07 Jan 2005 11:21:53 -0700")
> The macros "push" and "pop" in `subr' don't do the same thing as the push
> and pop in `cl'. This means that if you use:
> (eval-when-compile (require 'cl))
> in your code, the behavior will change depending on whether the compiled
> version is loaded (cl version), or you are interactively debugging (subr
> version). An example of a semantic which will fail with the subr version
> but not the cl version:
> (setq ov (pop (cdr ov-list)))
> which requires a list argument to pop, instead of the cdr of a list.
I don't see the problem. When debugging code in a file that does (require
FOO), you need to (require FOO) before doing C-x C-e or M-C-x.
Nothing new here.
The only difference is that in macs-20 (when subr.el didn't define its iown
version of `pop') you'd get an error "void function `pop'" whereas now you
get another error.
> Any suggestions on how to work around this (other than the obvious "don't
> do that")?
Don't do that,
Stefan
next prev parent reply other threads:[~2005-01-07 20:23 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-07 18:21 push and pop JD Smith
2005-01-07 19:39 ` David Kastrup
2005-01-07 20:23 ` Stefan Monnier [this message]
2005-01-07 21:15 ` JD Smith
2005-01-08 2:19 ` Miles Bader
2005-01-08 15:34 ` Richard Stallman
2005-01-09 17:53 ` JD Smith
2005-01-09 19:04 ` Francis Litterio
2005-01-09 19:42 ` Luc Teirlinck
2005-01-09 19:56 ` David Kastrup
2005-01-10 20:27 ` Richard Stallman
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