From: Michael Heerdegen <michael_heerdegen@web.de>
To: help-gnu-emacs@gnu.org
Subject: Re: delete all whitespace (space) in a region
Date: Tue, 14 Nov 2023 10:33:26 +0100 [thread overview]
Message-ID: <87bkbwu1ax.fsf@web.de> (raw)
In-Reply-To: e360b39e-db24-461e-9ce6-29186b234b25@easy-emacs.de
Andreas Röhler <andreas.roehler@easy-emacs.de> writes:
> The latter updates the end, whereas the previous keeps the old limit,
> which may do unexpected deletions.
Indeed. In such cases using markers is useful:
(unless (markerp end)
(setq end (copy-marker end)))
If you want to be kind to the gc, invalidate the marker at the end of
the function:
(move-marker end nil)
Michael.
next prev parent reply other threads:[~2023-11-14 9:33 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-08 17:53 delete all whitespace (space) in a region Uwe Brauer
2023-11-08 19:15 ` Manuel Giraud via Users list for the GNU Emacs text editor
2023-11-09 2:24 ` tpeplt
2023-11-09 2:43 ` Emanuel Berg
2023-11-13 16:02 ` Uwe Brauer
2023-11-09 5:34 ` tomas
2023-11-14 8:41 ` Andreas Röhler
2023-11-14 9:33 ` Michael Heerdegen [this message]
2023-11-09 8:44 ` Uwe Brauer
2023-11-09 15:58 ` tpeplt
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