From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Ihor Radchenko Newsgroups: gmane.emacs.devel Subject: Re: cond* Date: Sat, 13 Jan 2024 19:47:51 +0000 Message-ID: <87le8tt3q0.fsf@localhost> References: <87frzuae9n.fsf@posteo.net> <871qbatqc8.fsf@posteo.net> <87wmsz7lzn.fsf@posteo.net> <87edf1m7lq.fsf@localhost> <87cyui76l9.fsf@localhost> <871qauy1io.fsf@localhost> <87v881pch9.fsf@localhost> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="2063"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org To: rms@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sat Jan 13 20:45:23 2024 Return-path: Envelope-to: ged-emacs-devel@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 1rOjwZ-0000KY-Im for ged-emacs-devel@m.gmane-mx.org; Sat, 13 Jan 2024 20:45:23 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rOjvx-0005TL-W7; Sat, 13 Jan 2024 14:44:46 -0500 Original-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 1rOjvv-0005Sx-Jh for emacs-devel@gnu.org; Sat, 13 Jan 2024 14:44:43 -0500 Original-Received: from mout02.posteo.de ([185.67.36.66]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rOjvt-0007XN-7J for emacs-devel@gnu.org; Sat, 13 Jan 2024 14:44:43 -0500 Original-Received: from submission (posteo.de [185.67.36.169]) by mout02.posteo.de (Postfix) with ESMTPS id 3816C240101 for ; Sat, 13 Jan 2024 20:44:38 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.net; s=2017; t=1705175078; bh=UgrN1agUVZC+Cb3qk+Lkum0SuGft9/ySfaKwErmS/Qg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:From; b=B36Iibk6QUKiYFd81RevK6rfauHCOM/S1sm/xsImhF2Bjdzu8GORrpCv7pSb5P6yU tSkKnTI/3WIeHiuvb5ejrERhBsI5TXaFny/frsjmZLDq12I2PLjTvFPizC32TLy9RF 3wS71OzFhUXptgmV0LURqmm0oL40GpqMTPKcVze/sarMRhyImGFlJtW79TiNANhqLI fl7UFD5zAYtq8vHZ0t/MeYYMQIhW+WP37KARMmwAtVSDz23QM0G9kuEcnuOKJ9WjoN LpvpLKn4va5G6EOyQOuK+j1TQxliZl1ipub3kTEiE4n5577ifjBrNumBqOQUGiGZqV nzoAkyrK2NerA== Original-Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4TC84P4sfzz9rxD; Sat, 13 Jan 2024 20:44:37 +0100 (CET) In-Reply-To: Received-SPF: pass client-ip=185.67.36.66; envelope-from=yantar92@posteo.net; helo=mout02.posteo.de X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:314937 Archived-At: Richard Stallman writes: > ... I think > they will accept (symbolp x) also. I think that people will get used > to this once they start actually using cond*. People may as well get used to `pcase'. But `cond*' is supposed to be _better_ than `pcase', isn't it? Otherwise, we will end up not with one, but two confusing pattern matching macros and people will have to learn both. > To require use of the more complex `constrain' form even for the > common simple cases would make cond* less convenient for real. I > don't think it would be wise to create a real drawback to eliminate a > mere perception of a drawback. I was confused when reading the examples you provided. Same for Adam. So, at least two people are confused - it is not a "mere perception". I tried to come up with some better notation that is not as verbose as "constrain", but I cannot think of anything less confusing, unfortunately. -- Ihor Radchenko // yantar92, Org mode contributor, Learn more about Org mode at . Support Org development at , or support my work at