From: Emanuel Berg via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>
To: help-gnu-emacs@gnu.org
Subject: Re: [External] : Re: Lexical vs. dynamic: small examples?
Date: Thu, 26 Aug 2021 01:40:20 +0200 [thread overview]
Message-ID: <87wno9jdp7.fsf@zoho.eu> (raw)
In-Reply-To: 871r6hksj1.fsf@zoho.eu
> So why does it "work" with no defvar, just `setq'?
Indeed, it works with just `setq', and no `defvar'!
Now the byte-compiler instead warns about a reference to
a free variable. Maybe it shouldn't do that and instead warn
when one uses `defvar'?
;;; -*- lexical-binding: t -*-
;;;
;;; this file:
;;; http://user.it.uu.se/~embe8573/emacs-init/geh.el
;;; https://dataswamp.org/~incal/emacs-init/geh.el
(defmacro slet (bindings &rest body)
(unless lexical-binding
(error "`slet' requires `lexical-binding' to be enabled") )
`(funcall
(lambda ,(mapcar #'car bindings)
,@body)
,@(mapcar #'cadr bindings) ))
(setq b 200)
(defun fun ()
b) ; geh.el:18:3: Warning: reference to free variable ‘b’
(slet ((b 1))
(list b (fun)) ) ; (1 200)
(let ((b 2))
(list b (fun))) ; (2 200)
--
underground experts united
https://dataswamp.org/~incal
next prev parent reply other threads:[~2021-08-25 23:40 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-14 3:34 Lexical vs. dynamic: small examples? Eduardo Ochs
2021-08-14 3:56 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-14 4:12 ` Eduardo Ochs
2021-08-14 7:35 ` tomas
2021-08-14 16:00 ` Eduardo Ochs
2021-08-14 19:41 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-14 20:42 ` tomas
2021-08-14 19:31 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-14 20:31 ` tomas
2021-08-14 21:26 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-14 21:29 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-14 13:35 ` [External] : " Drew Adams
2021-08-14 16:15 ` Eduardo Ochs
2021-08-14 19:00 ` Gregory Heytings
2021-08-14 20:16 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-14 20:23 ` Gregory Heytings
2021-08-14 21:05 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-14 21:13 ` tomas
2021-08-14 21:28 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-14 20:41 ` tomas
2021-08-15 0:29 ` [External] : " Drew Adams
2021-08-15 0:52 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-15 1:04 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-15 1:18 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-15 4:44 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-15 5:02 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-15 15:49 ` Drew Adams
2021-08-15 18:49 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-15 21:55 ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-08-15 22:04 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-15 21:57 ` Drew Adams
2021-08-15 22:20 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-15 22:54 ` Drew Adams
2021-08-15 23:16 ` Drew Adams
2022-01-09 7:08 ` Jean Louis
2022-01-09 15:03 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-15 23:42 ` Arthur Miller
2021-08-15 22:02 ` Lars Ingebrigtsen
2021-08-15 22:22 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-15 22:44 ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-08-21 3:38 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-24 2:08 ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-08-25 23:34 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-25 23:40 ` Emanuel Berg via Users list for the GNU Emacs text editor [this message]
2021-08-26 0:10 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-26 0:44 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-26 17:01 ` FW: " Drew Adams
2021-08-26 23:05 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-25 23:46 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-25 23:47 ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-08-26 0:57 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-28 1:36 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-28 1:41 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-15 22:44 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-15 22:58 ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-08-15 23:13 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-15 23:56 ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-08-16 0:43 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-08-15 15:42 ` FW: " Drew Adams
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