From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#20727: 24.5; Font fallback doesn't work for the Emoji range Date: Sun, 14 Jun 2015 05:46:03 +0300 Message-ID: <83k2v7ovmc.fsf@gnu.org> References: <557B47B6.4080600@cs.ucla.edu> <837fr8q8dr.fsf@gnu.org> <83y4jnq0vz.fsf@gnu.org> <557C53E2.6070706@cs.ucla.edu> <83si9vpo0i.fsf@gnu.org> <557C633D.8090508@cs.ucla.edu> <83pp4zpk2s.fsf@gnu.org> <557C7AAB.2090609@cs.ucla.edu> <83mw03ph0m.fsf@gnu.org> <557C9E6E.3000002@cs.ucla.edu> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1434250043 11033 80.91.229.3 (14 Jun 2015 02:47:23 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 14 Jun 2015 02:47:23 +0000 (UTC) Cc: v.schneidermann@gmail.com, andrewjmoreton@gmail.com, 20727@debbugs.gnu.org To: Paul Eggert Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Jun 14 04:47:11 2015 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Z3xwz-00080b-VS for geb-bug-gnu-emacs@m.gmane.org; Sun, 14 Jun 2015 04:47:10 +0200 Original-Received: from localhost ([::1]:57585 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z3xwz-0000dd-8x for geb-bug-gnu-emacs@m.gmane.org; Sat, 13 Jun 2015 22:47:09 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:34252) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z3xww-0000dY-63 for bug-gnu-emacs@gnu.org; Sat, 13 Jun 2015 22:47:07 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Z3xws-0000SJ-VF for bug-gnu-emacs@gnu.org; Sat, 13 Jun 2015 22:47:06 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:38621) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z3xws-0000SF-Ru for bug-gnu-emacs@gnu.org; Sat, 13 Jun 2015 22:47:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1Z3xws-0002fY-Cn for bug-gnu-emacs@gnu.org; Sat, 13 Jun 2015 22:47:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 14 Jun 2015 02:47:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 20727 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: confirmed Original-Received: via spool by 20727-submit@debbugs.gnu.org id=B20727.143424997410199 (code B ref 20727); Sun, 14 Jun 2015 02:47:02 +0000 Original-Received: (at 20727) by debbugs.gnu.org; 14 Jun 2015 02:46:14 +0000 Original-Received: from localhost ([127.0.0.1]:53081 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Z3xw5-0002eP-QI for submit@debbugs.gnu.org; Sat, 13 Jun 2015 22:46:14 -0400 Original-Received: from mtaout29.012.net.il ([80.179.55.185]:50044) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Z3xw3-0002eB-Af for 20727@debbugs.gnu.org; Sat, 13 Jun 2015 22:46:12 -0400 Original-Received: from conversion-daemon.mtaout29.012.net.il by mtaout29.012.net.il (HyperSendmail v2007.08) id <0NPW00J00XW51I00@mtaout29.012.net.il> for 20727@debbugs.gnu.org; Sun, 14 Jun 2015 05:45:32 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by mtaout29.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NPW00K5HYBVXC00@mtaout29.012.net.il>; Sun, 14 Jun 2015 05:45:31 +0300 (IDT) In-reply-to: <557C9E6E.3000002@cs.ucla.edu> X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 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.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:103922 Archived-At: > Date: Sat, 13 Jun 2015 14:19:42 -0700 > From: Paul Eggert > CC: v.schneidermann@gmail.com, andrewjmoreton@gmail.com, > 20727@debbugs.gnu.org > > > Anyway, does the idea of selectively removing codepoints from where we > > currently specify Symbola sound good, given these trials? > > After trying it a bit I'm worried that this will be flaky. Often the Symbola > fonts are better (much better, if the default fonts lack the symbols), often > worse (if both fonts have the symbols), and it all depends on a lot of settings. What settings are those? The only ones I think are relevant are the default fontset and the default font. Are there any others? > Instead of using Symbola for all symbols, perhaps we should just use it for > emoticons and other symbols known to be commonly bad. That's what I intend to do next: leave Symbola only for symbols that are not well covered by other fonts. Similar to the patch I've shown earlier. > It's too bad that we can't fall back on Symbola only when the font is missing > the character. I still don't understand things well enough to propose an > implementation along those lines, though. It'd be great if you or someone else did. My impression from reading the (quite convoluted) code was that building font selection on actually trying to see if each candidate font has a glyph for a character will require a complete rewrite of the font-selection logic. And even then, we have no way of knowing if the glyph we get looks good.