From: Richard Stallman <rms@gnu.org>
To: martin rudalics <rudalics@gmx.at>
Cc: eliz@gnu.org, emacs-devel@gnu.org
Subject: Re: window-buffer-change-functions
Date: Thu, 22 Sep 2022 23:19:45 -0400 [thread overview]
Message-ID: <E1obZE9-0008Vr-N0@fencepost.gnu.org> (raw)
In-Reply-To: <1a6028ed-73bd-7d5f-c206-8061bdc9edd0@gmx.at> (message from martin rudalics on Thu, 22 Sep 2022 11:44:05 +0200)
[[[ To any NSA and FBI agents reading my email: please consider ]]]
[[[ whether defending the US Constitution against all enemies, ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]
I'm glad to have contributed improved documentation for the current
behavior of window-buffer-change-functions, but that behavior violates
the abstraction of variable bindings.
A variable is supposed to have one value at any given time. It might
be the default binding, or a something-local binding. But regardless
of why that binding is current at any time, its value is _the value_
of the variable at that time. The other bindings shouldn't affect
what the variable stands for when they are not current.
Special exceptions that undermine the meaning of a variable's value,
or any general design principle, cause conceptual confusion that will
get us in trouble.
--
Dr Richard Stallman (https://stallman.org)
Chief GNUisance of the GNU Project (https://gnu.org)
Founder, Free Software Foundation (https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)
next prev parent reply other threads:[~2022-09-23 3:19 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <SJ0PR10MB54886AFA7B33CF1E43E2E013F39A9@SJ0PR10MB5488.namprd10.prod.outlook.com>
[not found] ` <83o86hyild.fsf@gnu.org>
[not found] ` <877d1ycbom.fsf@gnus.org>
[not found] ` <SJ0PR10MB548895C6693206D88C719E60F34C9@SJ0PR10MB5488.namprd10.prod.outlook.com>
[not found] ` <835yhivx39.fsf@gnu.org>
[not found] ` <SJ0PR10MB5488AA81BBFCC4B4CE2D31B4F34C9@SJ0PR10MB5488.namprd10.prod.outlook.com>
[not found] ` <83v8piuh5k.fsf@gnu.org>
[not found] ` <SJ0PR10MB54887366A66613D1189EC466F34C9@SJ0PR10MB5488.namprd10.prod.outlook.com>
[not found] ` <2f85eda92184de27e10572e6b2320885@webmail.orcon.net.nz>
[not found] ` <83pmfpv4fs.fsf@gnu.org>
[not found] ` <7110e0330e878c144a6364a8e6ad651c@webmail.orcon.net.nz>
2022-09-21 13:59 ` window-buffer-change-functions Richard Stallman
2022-09-21 16:22 ` [External] : window-buffer-change-functions Drew Adams
2022-09-22 6:21 ` window-buffer-change-functions Eli Zaretskii
2022-09-22 9:44 ` window-buffer-change-functions martin rudalics
2022-09-23 3:19 ` Richard Stallman [this message]
2022-09-23 6:12 ` window-buffer-change-functions Eli Zaretskii
2022-09-24 2:43 ` window-buffer-change-functions Richard Stallman
2022-09-23 11:13 ` window-buffer-change-functions Phil Sainty
2022-09-24 2:43 ` window-buffer-change-functions Richard Stallman
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