From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Gregory Heytings Newsgroups: gmane.emacs.devel Subject: Re: prettify-symbols-mode to handle "\alpha-\beta" ... Date: Fri, 05 Feb 2021 22:45:03 +0000 Message-ID: <5588fb25804d75ad55f8@heytings.org> References: <87v9b8mvpb.fsf@telefonica.net> <87r1lwmrgc.fsf@telefonica.net> <5588fb258084b189877d@heytings.org> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="8WmPhQtfcl" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="6115"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org To: pietru@caramail.com Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Feb 05 23:47:08 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 1l89sa-0001Uc-3m for ged-emacs-devel@m.gmane-mx.org; Fri, 05 Feb 2021 23:47:08 +0100 Original-Received: from localhost ([::1]:60982 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l89sZ-0006NO-3R for ged-emacs-devel@m.gmane-mx.org; Fri, 05 Feb 2021 17:47:07 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:56934) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l89qo-0005bG-FI for emacs-devel@gnu.org; Fri, 05 Feb 2021 17:45:18 -0500 Original-Received: from heytings.org ([95.142.160.155]:38540) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l89qc-000638-Hj for emacs-devel@gnu.org; Fri, 05 Feb 2021 17:45:18 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heytings.org; s=20210101; t=1612565104; bh=LnpEJ6GdR1Rz5m/10FwGkfUrF+q7QciDvm6LeklbSZc=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:From; b=RMsqfOkWfSjvtqwqsLD6iRmoHR5l8izTk8lIVNTJIeDFlc1FBLekK4JPc7RD8glmf lY6Q/vH9bdRXmwffscnHK8xwgUY9pQ6JxdoqbTHQ9lEzqE8ViGicRkGana8sV6ozJk jD4Nh4h1fv29qTOh187O+InCGKW32/JbmDNE/XNs/4DbwJpRdXO8jftVjlD6HZKyMG /OishgZCfDEgJxgGhICdhowwEYu8ZP7rVTOM7fU6nERkX1P5gbXuILzh4vsNITYOIc VOihpVdkAv1/36EM19dC0ce2tGJ2os3cRtcrAs5KXVqh3FbBVxIG8AfYVoa8+iFzTx c4zeHYUkmzj1g== In-Reply-To: Content-ID: <5588fb2580ac6e8b90c7@heytings.org> Received-SPF: pass client-ip=95.142.160.155; envelope-from=gregory@heytings.org; helo=heytings.org X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, SPF_HELO_PASS=-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: 2.1.23 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:264023 Archived-At: --8WmPhQtfcl Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable Content-ID: <5588fb25803beeecbef4@heytings.org> >>> Would allowing a regexp solve the expression \alpha-\beta,=20 >>> \alpha+\beta, \alpha/\beta, so that \alpha and \beta are prettified=20 >>> seperately? >> >> That's not necessary. Just follow Stefan's advice: >> >> (defun texinfo-prettify-symbols-compose-p (start end _match) >> ;; We know the matches all start with a backslash and end with >> ;; a word-element. >> (not (or (memq (char-before start) '(?\\)) >> (memq (char-syntax (or (char-after end) ?\s)) '(?w)) >> (nth 8 (syntax-ppss))))) >> (add-hook 'texinfo-mode-hook >> (lambda () >> (push '("\\alpha" . ?=CE=B1) prettify-symbols-alist) >> (push '("\\beta" . ?=CE=B2) prettify-symbols-alist) >> (setq prettify-symbols-compose-predicate 'texinfo-prettify-= symbols-compose-p) >> (prettify-symbols-mode))) >> >> This does what you want. > > That is not completely correct because for "\alpha-\beta", only \beta is= =20 > prettified. > No, \alpha-\beta is prettified correctly. Tested with Emacs 25, 26, 27=20 and 28. --8WmPhQtfcl--