From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Noam Postavsky Newsgroups: gmane.emacs.bugs Subject: bug#34975: 26.1.92; In backquote, the comma marker does not work with variable name started with dot Date: Wed, 03 Apr 2019 23:31:24 -0400 Message-ID: <87wokae99v.fsf@gmail.com> References: <87sgvcxpzh.fsf@web.de> <1430c67b-c447-47b4-92b3-1cba335e8193@default> <877ecnybya.fsf@web.de> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="59538"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1.91 (gnu/linux) Cc: Xu Chunyang , 34975@debbugs.gnu.org To: Michael Heerdegen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Apr 04 05:32:38 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1hBt7G-000FL0-59 for geb-bug-gnu-emacs@m.gmane.org; Thu, 04 Apr 2019 05:32:38 +0200 Original-Received: from localhost ([127.0.0.1]:47764 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hBt7F-0000MS-4V for geb-bug-gnu-emacs@m.gmane.org; Wed, 03 Apr 2019 23:32:37 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:55871) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hBt6h-00005z-RL for bug-gnu-emacs@gnu.org; Wed, 03 Apr 2019 23:32:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hBt6g-00029H-Po for bug-gnu-emacs@gnu.org; Wed, 03 Apr 2019 23:32:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:58262) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hBt6g-000293-Ek for bug-gnu-emacs@gnu.org; Wed, 03 Apr 2019 23:32:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1hBt6g-0004DL-6J for bug-gnu-emacs@gnu.org; Wed, 03 Apr 2019 23:32:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Noam Postavsky Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 04 Apr 2019 03:32:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 34975 X-GNU-PR-Package: emacs Original-Received: via spool by 34975-submit@debbugs.gnu.org id=B34975.155434869516157 (code B ref 34975); Thu, 04 Apr 2019 03:32:02 +0000 Original-Received: (at 34975) by debbugs.gnu.org; 4 Apr 2019 03:31:35 +0000 Original-Received: from localhost ([127.0.0.1]:43573 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hBt6F-0004CX-Cx for submit@debbugs.gnu.org; Wed, 03 Apr 2019 23:31:35 -0400 Original-Received: from mail-qt1-f174.google.com ([209.85.160.174]:38620) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hBt6D-0004CL-MA for 34975@debbugs.gnu.org; Wed, 03 Apr 2019 23:31:34 -0400 Original-Received: by mail-qt1-f174.google.com with SMTP id d13so1646540qth.5 for <34975@debbugs.gnu.org>; Wed, 03 Apr 2019 20:31:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:references:date:in-reply-to:message-id :user-agent:mime-version; bh=oG5JhKXbvf8hrkDNVsRJHq79cGRjh3N7RCnk6RcPS7A=; b=PQOSqc0HlWKT0HAaurFyjv9riJ7FzfyiCP0qvPWnf/tA6VTkn1TSimLyonSkeI64bb ALgHN0Z5WUvzDVGv9ctVK6siXu380EIznTX1WFGWE2ILYJVPwdtBKsvvCRMJ/EIK+0zJ wOW5A4T+DNhBYbTFLEeiD7dUJZn713tNafenEYLAqsGz8IVvX8qsSd7TNjKF7bSiM0K8 zjP8SIL/6lV4hV8Sx6lpYpJjHvxJo+ncXpRzMpo1ZIGP/+zYvrP8G0gDfxJn+9GSbmd4 n7G2CpXZR5yZ7kN6LK521NDS7p9Kh64B61emz00c/P2x+mp0wumi73/7ZbmVaZL1tcrh 2sEA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:references:date:in-reply-to :message-id:user-agent:mime-version; bh=oG5JhKXbvf8hrkDNVsRJHq79cGRjh3N7RCnk6RcPS7A=; b=PGbAlnsVr+xErCNctChlkyYqJfj4tazmkawgdGsd6gtDDElW950lX9irnTeQfDUZcQ 2UE7+2oWzlVlqh2CjtDjQESNrGypGLsie8UhH81+484pEmLHe/+YsLxxpFWWiA0DqF1S DpRxPRRP/gUWVXBXz0MbkV4jIOgJmTO8cTHIH4f5xDXRvrL5PXJy9DYxYYrzYph+JOwT EkVY7wAPV0tsj/Bj81EeNO+Et01F3LgEVIX9Lf+/mtIwlOxXqCyZ25YX6QF12gWYbGCt TrQO6t1moZ8vo0TzGt/FOxlLzKB4sntze+PxBHUh6VjiBmm0DBH10OC07STXZZkAKA3Y WZxw== X-Gm-Message-State: APjAAAXKkLgcX6PJgYX2TmoWNXcV4iZbRr5hc3rDmVhzsKRflhbiWm/V mR4k46zT6uI9dtwe3RwXUzFKal+x X-Google-Smtp-Source: APXvYqxgbov94HcA+Au5BcwJSUwDFaXdfPEYX3wnVyxwp5HWxOIMzoOiBHUDXiKJINeAzFdwhQMMsw== X-Received: by 2002:a0c:99ca:: with SMTP id y10mr2891034qve.8.1554348686903; Wed, 03 Apr 2019 20:31:26 -0700 (PDT) Original-Received: from minid (cbl-45-2-119-34.yyz.frontiernetworks.ca. [45.2.119.34]) by smtp.googlemail.com with ESMTPSA id b37sm15541040qtb.92.2019.04.03.20.31.25 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 03 Apr 2019 20:31:25 -0700 (PDT) In-Reply-To: <877ecnybya.fsf@web.de> (Michael Heerdegen's message of "Mon, 25 Mar 2019 02:33:49 +0100") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 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.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:157158 Archived-At: Michael Heerdegen writes: > Drew Adams writes: > >> > I dunno or have forgotten for what it had been intended, there are no >> > real uses in the Emacs Elisp sources. >> > >> (I don't in fact use it, apparently, but I thought I >> might have, and if I did use it instead of ,@ then it >> would no doubt be for that reason.) >> >> On the other hand, Common Lisp says that ,. has this >> difference in meaning from ,@: >> >> "Anywhere ``,@'' may be used, the syntax ``,.'' may >> be used instead to indicate that it is permissible >> to destroy the list produced by the form following >> the ``,.''; this may permit more efficient code, >> using nconc instead of append, for example." > > Yes, thanks. I also found that post: > > https://lists.gnu.org/archive/html/emacs-devel/2012-02/msg00330.html > > The state is the same as back then: ,. is a reader macro in Emacs Lisp, > but the head of the expansion (the symbol named ",.") doesn't have any > semantics, even not in backquote. There's also Bug#19790 about this. I think it makes sense to just remove this reader macro, as far as I can tell, nobody really wants this destructive splicing feature.