From unknown Tue Jun 17 01:43:25 2025 X-Loop: help-debbugs@gnu.org Subject: bug#62067: 29.0.60; 'map-insert' implementation for lists is problematic Resent-From: Augusto Stoffel Original-Sender: "Debbugs-submit" Resent-CC: contovob@tcd.ie, bug-gnu-emacs@gnu.org Resent-Date: Thu, 09 Mar 2023 07:49:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 62067 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: To: 62067@debbugs.gnu.org Cc: Basil L. Contovounesios X-Debbugs-Original-To: bug-gnu-emacs@gnu.org X-Debbugs-Original-Xcc: Basil L. Contovounesios Received: via spool by submit@debbugs.gnu.org id=B.16783480906258 (code B ref -1); Thu, 09 Mar 2023 07:49:01 +0000 Received: (at submit) by debbugs.gnu.org; 9 Mar 2023 07:48:10 +0000 Received: from localhost ([127.0.0.1]:50792 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1paB0U-0001cq-7T for submit@debbugs.gnu.org; Thu, 09 Mar 2023 02:48:10 -0500 Received: from lists.gnu.org ([209.51.188.17]:36168) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1paB0S-0001ca-Ku for submit@debbugs.gnu.org; Thu, 09 Mar 2023 02:48:09 -0500 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 1paB0S-0002kX-0V for bug-gnu-emacs@gnu.org; Thu, 09 Mar 2023 02:48:08 -0500 Received: from mail-ed1-x532.google.com ([2a00:1450:4864:20::532]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1paB0Q-0007gT-8c for bug-gnu-emacs@gnu.org; Thu, 09 Mar 2023 02:48:07 -0500 Received: by mail-ed1-x532.google.com with SMTP id j11so3491299edq.4 for ; Wed, 08 Mar 2023 23:48:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; t=1678348084; h=mime-version:user-agent:message-id:date:subject:to:from:from:to:cc :subject:date:message-id:reply-to; bh=fTY1yX/0ceo6PKmePrKgt2yOQGlGzIQmctUqUgDICRc=; b=Fr2u5SijCaorMI3y5/VZA6qP5RuC2wEKP+qhRdUqavvT5TTFcNggj/I+Cwz7DcUY1V RVU85iczpuer58M0NlqX9pBTD568r9eh51ZSO/5Ju72nPofZp5pCedVcSbG5eRJqPNBU PhETWL6gIK49m/T6d/aP/B/rcbmsQ0oGKbxEl/7muPwoedgVrl1VZv8pJXLl7Qp2lm1B /nvFjot8tVhRsnz0pxA5QcKdUz6+MbkHr2UI57nAilILNfOhJhTLTjQLtVf2rs9EIBK7 xc47NsXa1EZ8bkvD3ifcfOY5ueIHgnSnqISNoe1CW9zb8RtUWZ1k/6XdVptoWnyeOptm IHHg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678348084; h=mime-version:user-agent:message-id:date:subject:to:from :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=fTY1yX/0ceo6PKmePrKgt2yOQGlGzIQmctUqUgDICRc=; b=SWDTL4tganSF08Fr9nYgL9QRv6W2a8rkCnFc1wRD2LikXcdJKWw7CdULsq/HAvMWtn PzmOgxChpCLXnHRe2x+qk/8J04+kOal0IWdeI7mKybRikGsxw227b0R/MEWL5po/L6By mDhFxE1q3aujgaOzOOiMcZvcBuRConfcGJhmX7b1dwoc4GjFktmwqXjs+GkOQ/Do9tUB oKOxnpWE1VZPnKgd6kJ/PMv5IA63lpVoBg7L4/7rh28KDFIf+d934nR82XnALgXlDmUW CRPKVxocVjuedTPmu69amiXvuSMPr6ofYcyEDD/KGLy8M1kYbCxVGDS63eTPruuqujpB kbTw== X-Gm-Message-State: AO0yUKUJhPbzpFAX+mwBzR59wfohvgvU3ml74GEmov30megV9W9WjlI4 NSJ2MnciAri3UBr9x4GF/9LlP6o5VyI2jQ== X-Google-Smtp-Source: AK7set8hYxJiaUmBx6Kn00UsuoRMWGGyJeoxoQpICezcjyIqOcqG/4udk329Lw0Z9vDf0nnsavwUVg== X-Received: by 2002:a17:906:dac7:b0:8f4:809e:faee with SMTP id xi7-20020a170906dac700b008f4809efaeemr32304674ejb.19.1678348084183; Wed, 08 Mar 2023 23:48:04 -0800 (PST) Received: from ars3 ([2a02:8109:8ac0:56d0::8b3a]) by smtp.gmail.com with ESMTPSA id rl10-20020a170907216a00b008baeb5c9bdbsm8571475ejb.141.2023.03.08.23.48.03 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 Mar 2023 23:48:03 -0800 (PST) From: Augusto Stoffel Date: Thu, 09 Mar 2023 08:48:02 +0100 Message-ID: <87cz5ifjrh.fsf@gmail.com> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain Received-SPF: pass client-ip=2a00:1450:4864:20::532; envelope-from=arstoffel@gmail.com; helo=mail-ed1-x532.google.com 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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -1.3 (-) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.3 (--) Consider, for instance: (map-insert '(:a 1) :a 2) => (:a 2 :a 1) This result will confuse users and other libraries: (json-encode (map-insert '(:a 1) :a 2)) => "{\"a\":2,\"a\":1}" Not even map.el can really handle these return values correctly: (let (x) (map-do (lambda (k v) (if (eq k :a) (setq x v))) (map-insert '(:a old) :a 'new)) x) => old The alist implementation has similar issues.