From: Joost Kremers <joostkremers@fastmail.fm>
To: "Nelson H. F. Beebe" <beebe@math.utah.edu>
Cc: Andreas Schwab <schwab@linux-m68k.org>, emacs-devel@gnu.org
Subject: Re: emacs-27 breaks null function
Date: Mon, 06 Apr 2020 20:51:49 +0200 [thread overview]
Message-ID: <87wo6s78hm.fsf@fastmail.fm> (raw)
In-Reply-To: <CMM.0.95.0.1586198258.beebe@gamma.math.utah.edu>
On Mon, Apr 06 2020, Nelson H. F. Beebe wrote:
> Andreas Schwab <schwab@linux-m68k.org> writes in response:
>
>>> That variable (executing-macro) as been marked obsolete for
>>> more than 24 years.
>>> The alias has finally been removed in emacs 27. Use
>>> executing-kbd-macro
>>> instead.
>
> Thanks, that solves the problem for the particular use of
> executing-macro,
> but what about testing for an undefined variable in general,
> such as
>
> (null
> this-var-might-not-be-defined-but-might-also-be-defined)
That's what `boundp` is for. (And `fboundp` if you want to check
whether a symbol has a function binding).
--
Joost Kremers
Life has its moments
next prev parent reply other threads:[~2020-04-06 18:51 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-06 17:30 emacs-27 breaks null function Nelson H. F. Beebe
2020-04-06 17:46 ` Andreas Schwab
2020-04-06 18:37 ` Nelson H. F. Beebe
2020-04-06 18:51 ` Joost Kremers [this message]
2020-04-06 18:52 ` Andreas Schwab
2020-04-06 18:53 ` Dmitry Gutov
2020-04-06 18:12 ` Stefan Monnier
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