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#54646: 29.0.50; set-fontset-font and font clipping issues Date: Fri, 22 Apr 2022 13:48:48 +0300 Message-ID: <83r15ppf5b.fsf@gnu.org> References: <875ynuokqt.fsf@gmail.com> <87v8vu5j9k.fsf@gmail.com> <837d8a6wm7.fsf@gnu.org> <87lewqjh41.fsf@gmail.com> <83wnga5ap3.fsf@gnu.org> <87a6d69g46.fsf@gmail.com> <87h77dk3zn.fsf@gmail.com> <87a6d5jyat.fsf@gmail.com> <87wng989ym.fsf@gmail.com> <83ilrt5b1v.fsf@gnu.org> <87h77cetq9.fsf@gmail.com> <831qyg6cyt.fsf@gnu.org> <87czi0eoyx.fsf@gmail.com> <83wng84rf8.fsf@gnu.org> <874k3aede0.fsf@gmail.com> <83y20m32h2.fsf@gnu.org> <87zgl2cvj8.fsf@gmail.com> <83wng630fg.fsf@gnu.org> <87v8vqcthz.fsf@gmail.com> <87wnfitrqy.fsf@gmail.com> <83zgkdpoo2.fsf@gnu.org> <87pml9tmz4.fsf@gmail.com> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="25855"; mail-complaints-to="usenet@ciao.gmane.io" Cc: rpluim@gmail.com, 54646@debbugs.gnu.org To: Visuwesh Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Apr 22 13:36:41 2022 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 1nhraa-0006Z8-Mo for geb-bug-gnu-emacs@m.gmane-mx.org; 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Original-Received: from [87.69.77.57] (port=3019 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 1nhqqI-0007UW-IN; Fri, 22 Apr 2022 06:48:51 -0400 In-Reply-To: <87pml9tmz4.fsf@gmail.com> (message from Visuwesh on Fri, 22 Apr 2022 16:16:07 +0530) 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:230410 Archived-At: > From: Visuwesh > Cc: rpluim@gmail.com, 54646@debbugs.gnu.org > Date: Fri, 22 Apr 2022 16:16:07 +0530 > > >> and the GOOD case for bb9 bbf is > >> > >> lbearing 1 rbearing 28 width 28 ascent 9 descent 5 > >> 1 bb9 bbf xadvance 1809 yadvance 0 xoffset 0 yoffset 0 > >> xpos 0 yoff 0 wadjust 28 > >> > >> and the BAD case is > >> > >> lbearing 1 rbearing 28 width 28 ascent 9 descent 5 > >> 1 bb9 bbf xadvance 3193 yadvance 0 xoffset 0 yoffset 0 > >> xpos 0 yoff 0 wadjust 50 > > > > This looks like HarfBuzz is feeding us incorrect data for some reason, > > but I cannot imagine what that reason could be, sorry. > > Could it be some kind of cache? Because when Emacs rendered the entire > webpage, I was unable to reproduce the issue. When Emacs have rendered the entire page, we no longer call HarfBuzz, because the composition data is indeed cached by Emacs. The print-outs you produced are from calling HarfBuzz, so our caching cannot affect that, AFAIU.