From: <tomas@tuxteam.de>
To: help-gnu-emacs@gnu.org
Subject: Re: Lexical vs. dynamic: small examples?
Date: Sat, 14 Aug 2021 23:13:31 +0200 [thread overview]
Message-ID: <20210814211331.GD14760@tuxteam.de> (raw)
In-Reply-To: <87eeav3ff2.fsf@zoho.eu>
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On Sat, Aug 14, 2021 at 11:05:53PM +0200, Emanuel Berg via Users list for the GNU Emacs text editor wrote:
> Gregory Heytings wrote:
>
> >>> (defvar saved-buffer-read-only)
> >>> (defun delete-whitespace-at-eol ()
> >>> (interactive)
> >>> (setq saved-buffer-read-only buffer-read-only)
> >>> (setq buffer-read-only nil)
> >>> (save-excursion (replace-regexp " *$" "" nil (point-min) (point-max)))
> >>> (setq buffer-read-only saved-buffer-read-only))
> >>
> >> OK, but you don't need to store the old value in a global variable...
> >>
> > Of course you do, you need to restore the original value [...]
>
> But there is still no need to use a global variable...
That's not the point. You perhaps don't want to trample on one. The
let-binding helps you with that. In both cases.
Cheers
- t
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next prev parent reply other threads:[~2021-08-14 21:13 UTC|newest]
Thread overview: 61+ 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 [this message]
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
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
-- strict thread matches above, loose matches on Subject: below --
2022-01-09 17:40 Drew Adams
2022-01-10 13:10 ` Emanuel Berg via Users list for the GNU Emacs text editor
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