From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.devel Subject: Re: Variable pitch text filling Date: Fri, 03 Dec 2021 16:41:35 +0100 Message-ID: <877dclzoeo.fsf@gnus.org> References: <87ilwft1ph.fsf@gnus.org> <875ysbxal0.fsf@gnus.org> <83h7bvugxm.fsf@gnu.org> <87sfvessx6.fsf@gnus.org> <87wnkp9c3t.fsf@gnus.org> <87ee6wanra.fsf@gnus.org> <83r1awse4k.fsf@gnu.org> <87sfvc8kdw.fsf@gnus.org> <83czmgs7t1.fsf@gnu.org> <87k0go8ios.fsf@gnus.org> <83bl20s2dp.fsf@gnu.org> <87wnkojmny.fsf@gnus.org> <837dcos1oy.fsf@gnu.org> <87o860jm27.fsf@gnus.org> <831r2ws0jf.fsf@gnu.org> <87fsrcjkik.fsf@gnus.org> <83ee6uao67.fsf@gnu.org> <83sfva92vo.fsf@gnu.org> <83czme85xk.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="29133"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: tumashu@163.com, casouri@gmail.com, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Dec 03 16:42:23 2021 Return-path: Envelope-to: ged-emacs-devel@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 1mtAha-0007PI-NW for ged-emacs-devel@m.gmane-mx.org; Fri, 03 Dec 2021 16:42:22 +0100 Original-Received: from localhost ([::1]:48048 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mtAhZ-0007QT-9K for ged-emacs-devel@m.gmane-mx.org; Fri, 03 Dec 2021 10:42:21 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:40292) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mtAh1-0006kS-Sc for emacs-devel@gnu.org; Fri, 03 Dec 2021 10:41:47 -0500 Original-Received: from [2a01:4f9:2b:f0f::2] (port=43224 helo=quimby.gnus.org) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mtAh0-0007tT-9G; Fri, 03 Dec 2021 10:41:47 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=rFHoinLe+b4Q8iwX8vitkyXbyj9lnesZqBwmoP384oU=; b=TUHXPA9CffQY0P0SM6CxdS/oSE fCHRdHZMBElyj1h+sYrLpS4PWvjPwhSCYSmM8rW4GiMIvCa1cfDMF+taeSxV5/wtG6GYFWkA11wxh BZVTdG5gf8sNvmZa3uptLeZexd7HqwrqXjt0uJvMFEnIlTVuLCBF4GUnBVxt+PdMx/XM=; Original-Received: from [84.212.220.105] (helo=xo) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mtAgp-00048r-JX; Fri, 03 Dec 2021 16:41:38 +0100 Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAABGdBTUEAALGPC/xhBQAAACBj SFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAAGFBMVEV9fmOGhYlNTUx2 dhCCgRWAfhOvx8b///8EnAsbAAAAAWJLR0QHFmGI6wAAAAd0SU1FB+UMAw8cJIwwnM8AAAGsSURB VDjLdZJbkuMgDEUFU9XfwArgUvnvQbCBuLKBxux/KyORdAd73DeOLesg9MBkvDfOeSJ5+pfUICIn f0PfcvNuPM0lbl4Hkf9FJ2CugfPJmUvgUkhnEGRpoPg/sEnhNSDnL4GBDMBegATyFJJbgCN4GyPB 2JDgfZLCBQQbIqyFNYgKjOwJI8BCZRGD3G2SLAEhkXn6nwyEiBiD/Cj++KMToMtSEJPE8Q0wwXwo sO+9NMcE0QqQamf4M0pDnKYjyEHOvFN/vdcKgKo5DBcx+RMxi5G5yHiYPmFj+xLQFELBV/xwmQpY lDtzUYPnq6SixvvG3Iaodx5D/bIK1LDd1N9H51XEKFm8U4t/UJVCtvryt5+wRnwH7vmhCVYJkALv eJTGJ6A9F9Ryk4i2gj9zFBXo7RBEPSNDr8oNC5IGc9aJ4MYV2wr2nFGkhMZ1rYC4yqTKXtB6le0W 0HYBTWZZ8glIx5v0v8lWBzAnqifSdpzB4L4h93KsSme+j54fteQDGC/1VnK/AkNa3d7jojEW0uex vpIvQOu7Alpee4N3Ejl5Hoc+nh9P4/Vz+AcsorMXoWMPvwAAACV0RVh0ZGF0ZTpjcmVhdGUAMjAy MS0xMi0wM1QxNToyODozNiswMDowMAVrEv4AAAAldEVYdGRhdGU6bW9kaWZ5ADIwMjEtMTItMDNU MTU6Mjg6MzYrMDA6MDB0NqpCAAAAAElFTkSuQmCC X-Now-Playing: Joni Mitchell's _The Hissing Of Summer Lawns_: "Harry's House-Centerpiece" In-Reply-To: <83czme85xk.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 03 Dec 2021 10:10:31 +0200") X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a01:4f9:2b:f0f::2 (failed) Received-SPF: pass client-ip=2a01:4f9:2b:f0f::2; envelope-from=larsi@gnus.org; helo=quimby.gnus.org X-Spam_score_int: -35 X-Spam_score: -3.6 X-Spam_bar: --- X-Spam_report: (-3.6 / 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_DNSWL_MED=-2.3, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:280841 Archived-At: Eli Zaretskii writes: > This is one of the "TIL" situations each one of us has with Emacs from > time to time. It means my thinking about adding character spacing was > based on wrong assumptions, and the only way to do that is to add > stretch glyphs (which can be done only between words). Why can stretch glyphs only be added between words? Is it because we ask the font backend to draw a series of glyphs in one go? If that's the case, perhaps we could stop doing that if we're doing a gridded display? One other thing that occurred to me (but I didn't look at closely) is whether it would be feasible to work on the glyph matrix for a line after it's been composed. I remember you doing some work on that when we talked about "compressing the mode line" -- I think you basically went over the matrix and removed some of the space glyphs? (That approach didn't work for other reasons, but the basic post processing thing did work, I think?) Do we have enough info about the glyphs at that stage that we could add some stretch glyphs to gridify the line? -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no