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.bugs Subject: bug#51550: 29.0.50; Customize Group INS buttons sometimes don't have a left box line Date: Wed, 29 Dec 2021 15:37:12 +0200 Message-ID: <83v8z7jzw7.fsf@gnu.org> References: <87ee80gezy.fsf.ref@yahoo.com> <87ee80gezy.fsf@yahoo.com> <83a6iolzjd.fsf@gnu.org> <87zgqnk74n.fsf@rub.de> <83ee7zll84.fsf@gnu.org> <87wnlrfhdk.fsf@yahoo.com> <831r3ylk6o.fsf@gnu.org> <87r1bxer97.fsf@yahoo.com> <83pmrhien9.fsf@gnu.org> <87mtkmz5ht.fsf@yahoo.com> <83k0foljiz.fsf@gnu.org> <87ilv8uu5p.fsf@yahoo.com> <837dbnlgbs.fsf@gnu.org> <87r19vsfx1.fsf@yahoo.com> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="4248"; mail-complaints-to="usenet@ciao.gmane.io" Cc: stephen.berman@gmx.net, stefan@marxist.se, 51550@debbugs.gnu.org To: Po Lu Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Dec 29 14:38:15 2021 Return-path: Envelope-to: geb-bug-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 1n2Z9f-0000nv-UO for geb-bug-gnu-emacs@m.gmane-mx.org; 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Original-Received: from [87.69.77.57] (port=1089 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 1n2Z8g-0003WW-Nt; Wed, 29 Dec 2021 08:37:12 -0500 In-Reply-To: <87r19vsfx1.fsf@yahoo.com> (message from Po Lu on Wed, 29 Dec 2021 21:23:54 +0800) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:223328 Archived-At: > From: Po Lu > Cc: stefan@marxist.se, stephen.berman@gmx.net, 51550@debbugs.gnu.org > Date: Wed, 29 Dec 2021 21:23:54 +0800 > > > (insert #("foo\n foo " 0 4 (face widget-field) 4 5 (invisible t) 5 8 (face custom-button))) > > I found another potential problem: determining the start of a box run > doesn't take the before-string of an overlay into account. > > wid-edit.el displays the button face through an overlay spanning from > the start to the end of the button, and I wanted to solve this problem > by adding a before-string containing a single invisible space, but that > doesn't seem to be affecting the non-display of the button's left box > line. Why did you want to use a before-string? why not simply a single invisible character before the button? It sounds like an unnecessary complication to me, since before-strings and after-strings are inherently tricky, even when they aren't invisible. But if you want me to look into this, you know what to do: show me a short Lisp recipe which I could investigate.