From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: npostavs@users.sourceforge.net Newsgroups: gmane.emacs.bugs Subject: bug#25826: 26.0.50; cl-mapc and cl-mapl do needless consing Date: Tue, 21 Feb 2017 08:40:18 -0500 Message-ID: <87shn7hdbx.fsf@users.sourceforge.net> References: <87d1ecyno9.fsf@calancha-pc> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1487684477 24285 195.159.176.226 (21 Feb 2017 13:41:17 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 21 Feb 2017 13:41:17 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux) Cc: 25826@debbugs.gnu.org To: Tino Calancha Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Feb 21 14:41:13 2017 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cgAgn-0005Yz-SY for geb-bug-gnu-emacs@m.gmane.org; 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Tue, 21 Feb 2017 05:39:07 -0800 (PST) Original-Received: from zony ([45.2.7.65]) by smtp.googlemail.com with ESMTPSA id 80sm10271151ioq.49.2017.02.21.05.39.06 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 21 Feb 2017 05:39:06 -0800 (PST) In-Reply-To: <87d1ecyno9.fsf@calancha-pc> (Tino Calancha's message of "Tue, 21 Feb 2017 17:04:54 +0900") 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: 208.118.235.43 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:129617 Archived-At: Tino Calancha writes: > Current implementation of cl-mapc (cl-mapl) uses `cl-mapcar' > (`cl-maplist') when input contains > 1 sequence. Thus, > they cons the values and just discard then at the end. > > Following patch adds a defvar which acts as a flag for consing > the values. The flag is bind to nil in the case of `cl-mapc' and > `cl-mapl'. Is it possible to do this via a parameter instead? Using a global variable seems like asking for trouble in case of nested calls or similar.