From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Robert Pluim Newsgroups: gmane.emacs.bugs Subject: bug#28236: 'configure --with-cairo' causes 'emacs -font' to fail Date: Thu, 13 Dec 2018 12:34:54 +0100 Message-ID: References: <87a82npghk.fsf@quad> <015a4a19-4f91-f9f4-7f2f-1b332d36a5a7@yandex.ru> <83sgz41swe.fsf@gnu.org> <87o99rgdej.fsf@gmail.com> <835zvy22t1.fsf@gnu.org> <83wooezoo5.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1544700854 6184 195.159.176.226 (13 Dec 2018 11:34:14 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 13 Dec 2018 11:34:14 +0000 (UTC) Cc: 28236@debbugs.gnu.org, ari.roponen@gmail.com, andrei.elkin@pp.inet.fi, dgutov@yandex.ru To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Dec 13 12:34:09 2018 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1gXPFp-0001U0-A2 for geb-bug-gnu-emacs@m.gmane.org; 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Thu, 13 Dec 2018 03:34:57 -0800 (PST) Original-Received: from rpluim-mac ([149.5.228.1]) by smtp.gmail.com with ESMTPSA id u10sm1430289wrr.33.2018.12.13.03.34.55 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 13 Dec 2018 03:34:56 -0800 (PST) Mail-Copies-To: never Gmane-Reply-To-List: yes In-Reply-To: <83wooezoo5.fsf@gnu.org> (Eli Zaretskii's message of "Wed, 12 Dec 2018 18:37:46 +0200") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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" Xref: news.gmane.org gmane.emacs.bugs:153403 Archived-At: Eli Zaretskii writes: >> From: Robert Pluim >> Cc: Ari Roponen , 28236@debbugs.gnu.org, andrei= .elkin@pp.inet.fi, dgutov@yandex.ru >> Date: Wed, 12 Dec 2018 16:41:52 +0100 >>=20 >> Eli Zaretskii writes: >>=20 >> > So you are saying that the problem here is that Cairo can only work >> > with fonts known fontconfig, and cannot switch to font backend(s) that >> > bypass fontconfig? If so, perhaps just an entry in PROBLEMS with the >> > above recipe would suffice as a workaround? >>=20 >> I find that surprising. The non-Cairo GTK build can use Xft and X font >> backends, what's different about Cairo? >>=20 >> (I just tried to set font-backend to '(ftcr x) on my Cairo build, and >> failed, so perhaps it really isn=CA=BCt supported). > > I'm guessing that the other font backends use X calls that cannot be > supported with Cairo drawing, or maybe such support simply wasn't > coded yet. But I'm not an expert on this stuff, so maybe I'm wrong. So xfns.c only initializes the xfont driver when not using Cairo. I made the obvious changes there, and 'emacs -Q -fn 7x14' starts up, and 'C-u C-x =3D' tells me: x:-misc-fixed-medium-r-normal--14-130-75-75-c-70-iso8859-1 (#x68) Unfortunately *scratch* does not (re-)display properly [1], so unless we=CA=BCre feeling really adventurous, we probably shouldn't enable both Cairo and the X font back on master, etc/PROBLEMS (or NEWS?) might be better. Robert Footnotes: [1] Admittedly this is over an ssh forwarded connection. Running it locally might look better.