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#65803: 29.1; Noto Sans Mono CJK JP has doubled-width on Windows Date: Fri, 08 Sep 2023 15:18:32 +0300 Message-ID: <83wmx0x3hj.fsf@gnu.org> References: <83bkeeytwf.fsf@gnu.org> <838r9iyrky.fsf@gnu.org> <835y4myqtb.fsf@gnu.org> <83jzt1xju6.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="21006"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 65803@debbugs.gnu.org To: Shingo Tanaka , Po Lu Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Sep 08 14:19:23 2023 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 1qeaSJ-0005Fm-Fn for geb-bug-gnu-emacs@m.gmane-mx.org; 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In-Reply-To: (message from Shingo Tanaka on Fri, 8 Sep 2023 07:26:18 +0900) 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:269765 Archived-At: > From: Shingo Tanaka > Date: Fri, 8 Sep 2023 07:26:18 +0900 > Cc: 65803@debbugs.gnu.org > > > Please also tell what does (frame-char-width) return with each of the > > two fonts on Windows. > > Here are the results including the one on Ubuntu. > Obviously, the 2nd one (Noto on Windows) returns a doubled-width size > which is unexpected. > > ;; On Windows - No issue > (progn > (set-face-attribute 'default nil :font "ＭＳ ゴシック") > (frame-char-width)) > 10 > (string-pixel-width "A") > 10 > (string-pixel-width "あ") > 20 > > ;; On Windows - Wrong frame-char-width > (progn > (set-face-attribute 'default nil :font "Noto Sans Mono CJK JP") > (frame-char-width)) > 20 > (string-pixel-width "A") > 10 > (string-pixel-width "あ") > 20 > > ;; On Ubuntu (w/Cairo) - No issue > (progn > (set-face-attribute 'default nil :font "Noto Sans Mono CJK JP") > (frame-char-width)) > 13 > (string-pixel-width "A") > 13 > (string-pixel-width "あ") > 26 This is strange. AFAIU, frame-char-width returns the "average width" attribute of the font, so why do we get different results on Windows and on X? Po Lu, can you help? Do font backends on X perform some trickery on the font's average_width attribute that we don't do on Windows? > > Is your Ubuntu build with Cairo, btw? > > Yes, the Emacs on Ubuntu is the latest Snap version which is compiled > with Cairo, as I can double check it by seeing colored Emoji.