Taylan Kammer <taylan.kammer@HIDDEN>
to control <at> debbugs.gnu.org.
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[109.90.125.150]) by smtp.gmail.com with ESMTPSA id n17sm2016304eds.72.2021.05.13.03.22.39 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 13 May 2021 03:22:39 -0700 (PDT) To: 39221 <at> debbugs.gnu.org From: Taylan Kammer <taylan.kammer@HIDDEN> Subject: Elisp nil is not a symbol in Elisp Message-ID: <6f61e272-ffeb-db15-37f2-a85e22e8f640@HIDDEN> Date: Thu, 13 May 2021 12:22:37 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="------------5642C8B3351B34C197FF8E8D" Content-Language: en-US X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 39221 Cc: John Cowan <cowan@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) This is a multi-part message in MIME format. --------------5642C8B3351B34C197FF8E8D Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Interesting issue. Was also not fixed in bipt's wip-elisp branch. Attached is a patch that attempts to fix this, and some related issues, both for nil and for t. The strategy is: 1. All Elisp functions we implement in terms of Scheme must be written to special-handle #nil and #t if they accept symbols as arguments. (Examples: symbolp, symbol-name, set, makunbound) 2. The Elisp function 'intern' must special-handle "nil" and "t". This patch, to realize nr. 1, turns #nil and #t into the Scheme symbols 'nil and 't internally in some situations, but makes sure not to return those symbols, which are of course not equivalent to the #nil and #t values. The Elisp reader already turns nil and t into #nil and #t, but we should probably also write a custom Elisp writer that writes them back as nil and t. I see you have a separate bug report open for that issue (https://bugs.gnu.org/39220) and I think we can keep the two issues separate so no attempt to touch on that in this patch. - Taylan --------------5642C8B3351B34C197FF8E8D Content-Type: text/plain; charset=UTF-8; name="0001-In-elisp-nil-and-t-are-symbols.patch" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="0001-In-elisp-nil-and-t-are-symbols.patch" RnJvbSA0YTRkMzZiYWZjY2UxNWJmMmVkZGMzMGI0ZjVhYjdjZWQ5YWQ5Zjg3IE1vbiBTZXAg MTcgMDA6MDA6MDAgMjAwMQpGcm9tOiBUYXlsYW4gS2FtbWVyIDx0YXlsYW4ua2FtbWVyQGdt YWlsLmNvbT4KRGF0ZTogVGh1LCAxMyBNYXkgMjAyMSAxMjowMzozNyArMDIwMApTdWJqZWN0 OiBbUEFUQ0hdIEluIGVsaXNwLCAjbmlsIGFuZCAjdCBhcmUgc3ltYm9scy4KCi0tLQogbW9k dWxlL2xhbmd1YWdlL2VsaXNwL2Jvb3QuZWwgICAgIHwgIDYgKy0KIG1vZHVsZS9sYW5ndWFn ZS9lbGlzcC9ydW50aW1lLnNjbSB8IDk3ICsrKysrKysrKysrKysrKysrKysrKy0tLS0tLS0t LS0KIDIgZmlsZXMgY2hhbmdlZCwgNjkgaW5zZXJ0aW9ucygrKSwgMzQgZGVsZXRpb25zKC0p 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bug-guile@HIDDEN:bug#39221; Package guile.
Full text available.Received: (at submit) by debbugs.gnu.org; 21 Jan 2020 17:52:56 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Tue Jan 21 12:52:56 2020 Received: from localhost ([127.0.0.1]:48411 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1itxhq-0008JK-OC for submit <at> debbugs.gnu.org; Tue, 21 Jan 2020 12:52:55 -0500 Received: from lists.gnu.org ([209.51.188.17]:37757) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <cowan@HIDDEN>) id 1itxhk-0008J4-EC for submit <at> debbugs.gnu.org; Tue, 21 Jan 2020 12:52:49 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:49902) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from <cowan@HIDDEN>) id 1itxhj-0007KX-24 for bug-guile@HIDDEN; Tue, 21 Jan 2020 12:52:44 -0500 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_50,HTML_MESSAGE autolearn=disabled version=3.3.2 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <cowan@HIDDEN>) id 1itxhh-0006kH-NP for bug-guile@HIDDEN; Tue, 21 Jan 2020 12:52:43 -0500 Received: from mail-qt1-x82c.google.com ([2607:f8b0:4864:20::82c]:36336) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from <cowan@HIDDEN>) id 1itxhh-0006jy-GQ for bug-guile@HIDDEN; Tue, 21 Jan 2020 12:52:41 -0500 Received: by mail-qt1-x82c.google.com with SMTP id i13so3361540qtr.3 for <bug-guile@HIDDEN>; Tue, 21 Jan 2020 09:52:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ccil-org.20150623.gappssmtp.com; s=20150623; h=mime-version:from:date:message-id:subject:to; bh=GqbfHQV2vskTSDzHJo9MENHpuy2cuzYBsUFY9EDgsIY=; b=xkCHapMcFWHGygoofoPTCvybqmiC5N1DBat4ssS1A2GIisPl53OccJ6m6i1DKRj51b Hrwt6QExgd+AU/rMOnaLducR+/KQLS1OwO+fhTk05ZE3j2jnufVV3bCQKkxiRZ6nXmFU 17wnUfg1REuBnvZHKbFI4wadMKZAlgv2+Bnmd8XF3eIHhEJUHh0s43++iE263+guMuW3 GnNLAldNTKfWGZk5pDwFfCGMCbvVHdDSk7L3ZVoClOnSjYkAiEW2r34WE42qFV/UBKV5 lr5qpquc8o5BN1GRUioQqubpRH38h5k0sZBVLHlFnCvTqbljfDahgYiRvhQn9mSDVan4 40OQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=GqbfHQV2vskTSDzHJo9MENHpuy2cuzYBsUFY9EDgsIY=; b=D6bWJjgbxuXQIu2TkFwTS/ApEvGOL8oMP9XoP8f1fGiSbuJl8fzdkpO91kGKB2BqWN MRIbs4Lx/vtD56Fr4MM2mchmaiCvyBKePsubFZhosinLY5qWvtmh3DYpmVQt+5P66k8Y 3ZOyKMa0CTQeRLtHW3ez1wIZk2THSyt35F1bO64H/ALVeF/aYS+zead0ezaiatd6613K oQ/yy683npqlsB723D0L0ij5zh6P5EQaZPQI5EHKHf1+EAZT8GGVsVu23lK54OhDCLRF jNYhDuLaG0+OlwoiqH2/kYSLU0ZZpG6mkEQQeyMx9Vq3vc2oP4Fc2imC73GfnF0YD8dP I6dQ== X-Gm-Message-State: APjAAAVlmQIxzQKBFWfUuvDdU4m6Zqok+jTAb5Hum+5r/X47ETW24cVE g2yWra4dlu57uFKbWeazVvrPMoPqpMDDN/emYzna3c/9SRs= X-Google-Smtp-Source: APXvYqxBzgstyvBGjsnbTwGxj77dmLrSlijG5pcas1WyKJX4nTYqyvcKf35FgerVa5DMG6VEyRrEi8ySdKLPOZzI4rk= X-Received: by 2002:ac8:4456:: with SMTP id m22mr5669549qtn.362.1579629160485; Tue, 21 Jan 2020 09:52:40 -0800 (PST) MIME-Version: 1.0 From: John Cowan <cowan@HIDDEN> Date: Tue, 21 Jan 2020 12:52:30 -0500 Message-ID: <CAD2gp_QBRxyPQuhKG3nxwZUEfa6RK+CMk5RsiWfJwqYfu3WtTA@HIDDEN> Subject: Elisp nil is not a symbol in Elisp To: bug-guile@HIDDEN Content-Type: multipart/alternative; boundary="000000000000fce902059caa1202" X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::82c X-Spam-Score: -1.3 (-) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -2.3 (--) --000000000000fce902059caa1202 Content-Type: text/plain; charset="UTF-8" Elisp symbolp does not think nil is a symbol, which it is in Emacs Elisp. Fixing this should not affect Scheme's symbol? predicate. --000000000000fce902059caa1202 Content-Type: text/html; charset="UTF-8" <div dir="ltr"><div>Elisp symbolp does not think nil is a symbol, which it is in Emacs Elisp. Fixing this should not affect Scheme's symbol? predicate.</div><div></div></div> --000000000000fce902059caa1202--
John Cowan <cowan@HIDDEN>:bug-guile@HIDDEN.
Full text available.bug-guile@HIDDEN:bug#39221; Package guile.
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