From: Michael Heerdegen <michael_heerdegen@web.de>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: Emacs Development <emacs-devel@gnu.org>
Subject: Re: defvar without value
Date: Thu, 02 Apr 2020 00:45:40 +0200 [thread overview]
Message-ID: <878sjebzaj.fsf@web.de> (raw)
In-Reply-To: <jwvtv24f2m7.fsf-monnier+emacs@gnu.org> (Stefan Monnier's message of "Tue, 31 Mar 2020 20:59:17 -0400")
Stefan Monnier <monnier@iro.umontreal.ca> writes:
> I guess we could add something like (defvar-dynamic VAR) which sets the
> `special` bit on the variable, just like (defvar VAR VAL) does, but
> leaves the variable's value unchanged (currently, you'd have to do
> (progn (defvar VAR 'dummy) (makunbound 'VAR)) to get a similar
> effect).
Yes, I guess that would be nice... we/you/someone wanted to add `fluid-let'
(i.e. a dynamically binding `let') anyway. I guess this can all be done
at once.
> Similarly, we could add something like (defvar-lexical VAR VAL) which
> defines the var and sets it but doesn't set the `special` bit
Uses of that exceed my current imagination. Ah, ok, following
(top-level) defuns would become closures referencing the VAR
automatically, right?
Michael.
next prev parent reply other threads:[~2020-04-01 22:45 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-01 0:03 defvar without value Michael Heerdegen
2020-04-01 0:36 ` Drew Adams
2020-04-01 0:59 ` Stefan Monnier
2020-04-01 22:45 ` Michael Heerdegen [this message]
2020-04-02 2:37 ` Stefan Monnier
2020-04-09 1:52 ` Michael Heerdegen
2020-04-09 2:04 ` Emanuel Berg via Emacs development discussions.
2020-04-09 2:20 ` Stefan Monnier
2020-04-09 23:34 ` Emanuel Berg via Emacs development discussions.
2020-04-10 15:20 ` Bruno Félix Rezende Ribeiro
2020-04-10 23:07 ` Emanuel Berg via Emacs development discussions.
2020-04-10 21:57 ` Michael Heerdegen
2020-04-01 1:21 ` Noam Postavsky
2020-04-01 1:53 ` Michael Heerdegen
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