From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#61350: Eglot over Tramp freezes with large project Date: Wed, 15 Mar 2023 17:43:22 -0400 Message-ID: References: <87y1ootw2t.fsf@gmail.com> <31964054.380679.1678194256931@office.mailbox.org> <87r0u0u0rl.fsf@gmx.de> <87mt4otyy1.fsf@gmx.de> <87pm9fk6ht.fsf@gmx.de> <87mt4jzf8q.fsf@gmail.com> <87fsabh2z2.fsf@gmx.de> <87edpvxu7w.fsf@gmail.com> <87bkkzgyb8.fsf@gmx.de> <87lek2x09t.fsf@gmail.com> <875yb646d1.fsf@gmx.de> <87fsa7mw9x.fsf@gmx.de> <87fsa7l6o6.fsf@gmx.de> <87a60fl4p7.fsf@gmx.de> <878rfx6bqe.fsf@gmail.com> Reply-To: Stefan Monnier Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="28729"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Thomas Koch , Michael Albinus , 61350@debbugs.gnu.org To: =?UTF-8?Q?Jo=C3=A3o_?= =?UTF-8?Q?T=C3=A1vora?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Mar 15 22:44:31 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 1pcYv8-0007CT-JS for geb-bug-gnu-emacs@m.gmane-mx.org; 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Wed, 15 Mar 2023 21:44:02 +0000 Original-Received: (at 61350) by debbugs.gnu.org; 15 Mar 2023 21:43:33 +0000 Original-Received: from localhost ([127.0.0.1]:40664 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pcYuC-0003EY-M4 for submit@debbugs.gnu.org; Wed, 15 Mar 2023 17:43:32 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:53255) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pcYuA-0003EM-Qc for 61350@debbugs.gnu.org; Wed, 15 Mar 2023 17:43:31 -0400 Original-Received: from pmg3.iro.umontreal.ca (localhost [127.0.0.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 68FD744234E; Wed, 15 Mar 2023 17:43:25 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id E19184422CD; Wed, 15 Mar 2023 17:43:23 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1678916603; bh=sIz6jkYDukWBKPxuSvHujnsNP73V7kOHzqIqcYgy1CY=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=pbJEYBV6hHVXPRqQ4RWh8HrgUigi7tTUFYjBVO+F4IWTWWLxpqDZyc7BK1KN/WNET V0mHPDNalymIUITMTh0wqVpVN5lcY9htYgpYMvvhP6jYvs7MQkK41CFfYjgd/YcRwm uwEpvs/jr2W4PDLUZ4EbWa2KUBXNTQ9GnUlXhvgL9zw+iupSoP/3rRdFHbf/iCnTIC M6p2pALh1co4Jt3lepyh1oii15kG2k6EIge7XlRACMHSm74VZ9TEPdvrWJ7oR8nguC 3CJUwrJtl22JZZAh+2fCdbNrs5Hq36G7JBhNkKNdUR5pgfFmX3ScDOqPlL8hh/vegl dhlkXUwwcIZ/A== Original-Received: from lechazo (lechon.iro.umontreal.ca [132.204.27.242]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id BB22E1232DB; Wed, 15 Mar 2023 17:43:23 -0400 (EDT) In-Reply-To: <878rfx6bqe.fsf@gmail.com> ("=?UTF-8?Q?Jo=C3=A3o_?= =?UTF-8?Q?T=C3=A1vora?="'s message of "Wed, 15 Mar 2023 19:44:25 +0000") 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:257989 Archived-At: >> I think we understand some of the problems well enough to think >> about solutions. > Does that "some" include _this_ problem? Not on my side, sadly, no, but maybe on Michael's? > We could also ask other questions, of course, like: could Tramp use a > process filter? IMO these are very powerful tools and bring a > substantial degree of freedom of implementation. Currently Tramp relies > on accept-p-o and then searches the process buffer for regexps. To me, > that just seems more difficult and error-prone than process filters. FWIW, I believe the crux of the matter here is that process filters receive an arbitrary chunk at a time, so we almost always need to make them accumulate the received data into some kind of buffer-like data structure until we have "enough" data. IOW, most process filters need to do something like (lambda (proc string) (let* ((buffer (process-get proc 'my-buffer)) (new (concat buffer string))) (if (not (had-enough-p new)) (process-put proc 'my-buffer new) (process-put proc 'my-buffer nil) (do-the-actual-processing new)))) Another issue for Tramp is that basically all of the API it has to implement (for `file-name-handler-alist`) is synchronous, so that forces it to resort to `accept-p-o` :-( If we want Tramp to work better, we'll need to provide asynchronous versions of most of those operations (presumably using some kind of promise/future abstraction). Stefan