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.devel Subject: Re: Questions about tree-sitter Date: Fri, 01 Sep 2023 09:53:14 +0300 Message-ID: <834jkecrl1.fsf@gnu.org> References: <12fe5895-7d34-4f3e-b1cf-aa133b718c24@mailo.com> 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="798"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org To: Madhu Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Sep 01 08:55:02 2023 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 1qby3Z-000AVO-Mb for ged-emacs-devel@m.gmane-mx.org; Fri, 01 Sep 2023 08:55:01 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qby2P-000274-25; Fri, 01 Sep 2023 02:53:50 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qby2J-00026p-Ct for emacs-devel@gnu.org; Fri, 01 Sep 2023 02:53:43 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qby2I-0007Cm-Qd; Fri, 01 Sep 2023 02:53:42 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=mdkPux7E8UdwKWYOw9enOvrwlAt8Se6HFbtSv8+NpXE=; b=rqHj/ftVvUfpI3i5dxYh N3bXffBf7UBCnEPTmHYZgrN7f1ZdkivgFALFiZZ2BsIvAX/zaabOivgOiuZBxyx8qbiNl2/Mv3bn1 sCdApcghPkAq1gbaDt2gCGg7ojRqd4wPz9IzU4IsxjLId3cWCP1++cgcJfwRX60OkjC9Pqxy6hkSp Xdag2o7Zqrj18NZB04bMpswb5VESaN85ZiYYdpCzyfTCXtU6I8xEL1VF8uFP84yxs2DjLYLoMBwfg PAHMj8bnCpWMch6RM/xupPjhj+sef3m1hy+/x1rRzJ/uiucFHyB9zPZAShCZJQbTvxJ09Cpf+iK83 EWgRwZ3b9T5FjA==; In-Reply-To: (message from Madhu on Fri, 01 Sep 2023 08:09:27 +0530) 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-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:309726 Archived-At: > From: Madhu > Date: Fri, 01 Sep 2023 08:09:27 +0530 > > * Yuan Fu : > Wrote on Wed, 30 Aug 2023 00:03:03 -0700: > >> On Aug 29, 2023, at 2:26 PM, Augustin Chéneau (BTuin) wrote: > >> 1. Is there a way to reload a grammar? > >> Emacs is pretty nice as a playground for testing grammars, but once a > >> grammar is loaded, it won't be loaded again until Emacs restarts (as > >> far as I know). Is it possible to reload a grammar after modifying > >> it? > > > > No, and it’s probably not easy to implement either, since unloading > > the grammar would require Emacs to purge/invalid all the > > node/query/parsers using that grammar. > > Does else see this a fundamental problem of the infrastructure, as it > now relates to "becoming emacs"? I don't think the capability to unload and reload is a necessary requirement from any Emacs feature. In particular, unloading a feature is not always supported in a way that leaves a clean slate. It is a good thing to have that, no doubt. But not a hard requirement, IMO. Especially when the grammar is a C library, not a Lisp library. People who are testing grammars are advised to use scratch Emacs sessions which are restarted when the grammar changes.