From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Kangas Newsgroups: gmane.emacs.bugs Subject: bug#45926: Tabulated-list-mode wasteful properties Date: Thu, 11 Mar 2021 21:39:39 -0600 Message-ID: References: <20210117073252.k7f2x35lq3labahe@E15-2016.optimum.net> <87wnwb1y31.fsf@tcd.ie> <20210117151128.kwzzacivle4ecsfs@E15-2016.optimum.net> <878s8ppkgp.fsf@gnus.org> <20210312025709.cdqb6fl5cr7wa3dt@E15-2016.optimum.net> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="28215"; mail-complaints-to="usenet@ciao.gmane.io" Cc: "Basil L. Contovounesios" , Lars Ingebrigtsen , 45926@debbugs.gnu.org To: Boruch Baum Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Mar 12 04:40:38 2021 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 1lKYfG-0007Dl-8u for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 12 Mar 2021 04:40:38 +0100 Original-Received: from localhost ([::1]:38890 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lKYfF-0004ch-AI for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 11 Mar 2021 22:40:37 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:58648) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lKYeg-0004c0-IW for bug-gnu-emacs@gnu.org; Thu, 11 Mar 2021 22:40:02 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:44230) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lKYeg-0007d5-B9 for bug-gnu-emacs@gnu.org; Thu, 11 Mar 2021 22:40:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1lKYeg-0007Zj-68 for bug-gnu-emacs@gnu.org; Thu, 11 Mar 2021 22:40:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Stefan Kangas Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 12 Mar 2021 03:40:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 45926 X-GNU-PR-Package: emacs Original-Received: via spool by 45926-submit@debbugs.gnu.org id=B45926.161552038829095 (code B ref 45926); Fri, 12 Mar 2021 03:40:02 +0000 Original-Received: (at 45926) by debbugs.gnu.org; 12 Mar 2021 03:39:48 +0000 Original-Received: from localhost ([127.0.0.1]:55776 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lKYeR-0007ZC-Pj for submit@debbugs.gnu.org; Thu, 11 Mar 2021 22:39:47 -0500 Original-Received: from mail-pf1-f171.google.com ([209.85.210.171]:35309) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lKYeQ-0007Yz-4f for 45926@debbugs.gnu.org; Thu, 11 Mar 2021 22:39:46 -0500 Original-Received: by mail-pf1-f171.google.com with SMTP id y67so947985pfb.2 for <45926@debbugs.gnu.org>; Thu, 11 Mar 2021 19:39:46 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:in-reply-to:references:mime-version:date :message-id:subject:to:cc; bh=sYBG75iq4D1ApEumKXR0X639Me3SKZtf3mxcyE2Kx2o=; b=OEZi7bbnFaEJVCkv/TwbpC0d1Hcrstz01s8NV1vhTNtFEuygBpBHjElD92XS0g7G5O At5lt0gnEm5d5fC+n/iGVT/LB++MCqwTGapotKqkBeaAS9uWmvFLVOVkj5/skvgjuRkM kjZMFvh28BX1MXp14gsSN9wkK/QWxCTJOyeaKDC8AEs/5S+MCBxj0fqdef6AkqjUR3Hq cZZ4opz68XMtE63obfAVOjI8ANpMKpEspG0VcJ7RToSDljJFR+bV5CDWTeKm3ppSxryx J61LoHoniMSlsvo4241QOdJcWY4Dgb6T+A/z4s7PJyWD8y15QC6T2pxEcFKv2cL91h3p BknQ== X-Gm-Message-State: AOAM531heOPsYxyxz1HXXysvnrhQUgy5LSRBR6K4vEnJ3jPxG66o8P/H UOXRL6ex7wZbtX6K1JKm4jeeBMJUkQOUrINmw7Y= X-Google-Smtp-Source: ABdhPJwIV4mu2KxNZHRVoGxKGZElA9kkIcNrMBVr084UeJZEKXgeK0JVmkspHxfhA+gdAAJawYz2/1Jinb2BUDEIbBU= X-Received: by 2002:a63:fd0a:: with SMTP id d10mr9768445pgh.345.1615520380290; Thu, 11 Mar 2021 19:39:40 -0800 (PST) Original-Received: from 753933720722 named unknown by gmailapi.google.com with HTTPREST; Thu, 11 Mar 2021 21:39:39 -0600 In-Reply-To: <20210312025709.cdqb6fl5cr7wa3dt@E15-2016.optimum.net> 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" Xref: news.gmane.io gmane.emacs.bugs:202136 Archived-At: Boruch Baum writes: >> Borouch, did you have the time to look into if this data is indeed >> shared or not? Thanks. > > Oh. I thought I had done that right away ... > > Doing it again now. Yes. It's very simple to check for yourself. Open a > buffer that uses the mode and evaluate from any table line ... > > (buffer-substring (line-beginning-position) (line-end-position)) > > You should be able to clearly see all the duplication. It's easiest when > you have pretty-print set up to display the output in a dedicated > buffer, but even without that you can isearch through the duplications. I think the interesting question is if that data is duplicated in memory or if these are just pointers to the same shared data. I would try modifying this data with something like `setcdr' to see if it updates everywhere -- if the answer yes, then this data is shared and there is no problem here.