From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.help Subject: Re: Inspecting behaviour of `make-overlay', is this expected? Date: Sat, 24 Dec 2022 10:36:59 +0200 Message-ID: <83cz895has.fsf@gnu.org> References: Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="9595"; mail-complaints-to="usenet@ciao.gmane.io" To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sat Dec 24 09:42:43 2022 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1p9079-0002Ks-3s for geh-help-gnu-emacs@m.gmane-mx.org; Sat, 24 Dec 2022 09:42:43 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1p902A-0002lS-QI; Sat, 24 Dec 2022 03:37:34 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1p901d-0002Yl-Gd for help-gnu-emacs@gnu.org; Sat, 24 Dec 2022 03:37:03 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1p901d-0003nE-6g for help-gnu-emacs@gnu.org; Sat, 24 Dec 2022 03:37:01 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=qlrTycIaQKnGxEkuhCnkApmDCqzDQsP79/E+mSW03eQ=; b=IWUVv337mP/A Jy+yoXwRot9CfLyLVuZ9te8hAUoZW/OVJnf/euO614fFXgbvgndJ2BODETMttZ58w2yU0YnEL3Lyv tmRJOdgft4p167veiPGpFJftvUI/ELEtkwv4VnCR1DRUSxFV1XvHoIabiisIMrdxQUPAHnF6Q3GGn 9sJ+E3E7TjkHnK/GKaV1lfBkqhS4UNy1cx8Za9KskfAkv2R1p/z0ZSZtfxXWaSbHos9DszlPXpOdM V8BuvisAJhJK4g9+Q7UKUr18O8JfF8QXKhww+caOkBaHKuWuMAdwxcSnniRH9HFl8HQo4hXpkKrVU 7qHkTKK0ZhRwi5/Yd8pe5w==; Original-Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1p901c-0008GO-2R for help-gnu-emacs@gnu.org; Sat, 24 Dec 2022 03:37:00 -0500 In-Reply-To: (message from Jean Louis on Sat, 24 Dec 2022 10:52:47 +0300) X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:141923 Archived-At: > Date: Sat, 24 Dec 2022 10:52:47 +0300 > From: Jean Louis > > XXXXXXXXXX > ^ > | position 0 in buffer > > (setq my-overlay (make-overlay 0 10)) > (get-buffer-window (overlay-buffer my-overlay)) > (overlay-put my-overlay 'display "Hello") then I get: > > HelloX > > instead of "Hello" > > Is this normal behavior? Yes. The 10 part says that the overlay _ends_ before position 10. This is standard Emacs behavior with text properties and overlays: END means the first character NOT affected by the property/overlay.