From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: uzibalqa Newsgroups: gmane.emacs.help Subject: Re: Using button-label in pcase Date: Mon, 24 Jul 2023 21:35:44 +0000 Message-ID: References: <87pm4hvztc.fsf@gmx.net> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="3142"; mail-complaints-to="usenet@ciao.gmane.io" Cc: uzibalqa via Users list for the GNU Emacs text editor To: Stephen Berman Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Mon Jul 24 23:36:47 2023 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 1qO3EV-0000e4-Dc for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 24 Jul 2023 23:36:47 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qO3Dt-0005IS-Tp; Mon, 24 Jul 2023 17:36:09 -0400 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 1qO3Dr-0005IF-PM for help-gnu-emacs@gnu.org; Mon, 24 Jul 2023 17:36:07 -0400 Original-Received: from mail-4324.protonmail.ch ([185.70.43.24]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qO3Dm-0000yn-K6 for help-gnu-emacs@gnu.org; Mon, 24 Jul 2023 17:36:07 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=proton.me; s=protonmail; t=1690234560; x=1690493760; bh=5tI/oBkHE00LayboaLT6svxs/ZS6NdJpScHA3aZ3vU0=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector; b=keqpb1WUVp/2CSrgrtRp2XxuUTHEqGJeNdvwEDcp2ZfhglUJZX6DoeDe4tZHffAGi Xci8bjQufLAz3ixERDiAjxzih+vI9oOJmz5exvJR0GEI+XjEqZPrMxsFRZkwT/Uk90 L0mrikcd1zGep0MPgzWlHY+3cBZ6wyr75qOScuLJvHjoDvXeVCfzT1M0gKkxNj2D9X 5LqDzq1ie/g+4gONcXMaabxAKbdlT98BK3qr8xZSWjCPuWWneW9eoLqvD/sQ8jxm4m mhm4TONIkZ35KkIqcUkzrEabrdjQ86MmgVkkjm5Eparz+HADWwHLaBVnGty4dljm5L fj3PxwvoHAqSQ== In-Reply-To: <87pm4hvztc.fsf@gmx.net> Feedback-ID: 52887082:user:proton Received-SPF: pass client-ip=185.70.43.24; envelope-from=uzibalqa@proton.me; helo=mail-4324.protonmail.ch X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action 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:144428 Archived-At: ------- Original Message ------- On Tuesday, July 25th, 2023 at 8:07 AM, Stephen Berman wrote: > On Mon, 24 Jul 2023 19:14:27 +0000 uzibalqa uzibalqa@proton.me wrote: >=20 > > Want to print some text as a result of clicking a button. With the code= below > > I end up with > >=20 > > (wrong-type-argument integer-or-marker-p nil) > > buffer-substring-no-properties(nil nil) > > button-label(#) > > (let* ((val (button-label button))) (if (equal val '"[FA]") (let nil (i= nsert qrh-c)))) > > (closure ((button . #)) nil (let* ((val (button-l= abel button))) (if (equal val '"[FA]") (let nil (insert qrh-c)))))() > > help--window-setup("Help" (closure ((button . #))= nil (let* ((val (button-label button))) (if (equal val '"[FA]") (let nil (= insert qrh-c)))))) > > qrh-b(#) > > button-activate(# t) > > push-button(3 t) > >=20 > > What is going on. Is there a fix? > >=20 > > (defconst qrh-c "[FA] Some Text") > >=20 > > (defun qrh-b (button) > > "Prints information about how to install emacs." > > (with-help-window (help-buffer) > > (pcase (button-label button) > > ("[FA]" (insert qrh-c))) )) > >=20 > > (defun qrh-a () > > "Prints information about how to install emacs." > > (interactive) > > (with-help-window (help-buffer) > > (insert-button "[FC]" > > 'action 'qrh-b 'follow-link t) )) >=20 > The error is raised because qrh-b calls with-help-window with the Help > buffer current, but with-help-window erases the buffer, so when > `(button-label button)' is evaluated, there is no button and this > signals the error. That what was wrong then. =20 > If you want to use the existing Help buffer, just remove the call to > with-help-window in qrh-b.=20 > However, Help buffers are read-only, so > trying to insert text will raise another error. To avoid this, you can > let-bind buffer-read-only in qrh-b.=20 I do not experience the problem you mention. What error are you referring = to,=20 and how can it be triggered ? > However, since qrh-a inserts "[FC]" > but qrh-b tries to match "[FA]", the match will fail, so the insertion > in qrh-b will not happen. - Steve Berman That was an error from my part.