From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: RFC: String interpolation Date: Mon, 12 Dec 2016 12:14:19 -0500 Message-ID: References: <51825111-ace4-f750-4077-026a3b648d27@gmail.com> <8737hwnc52.fsf@lifelogs.com> <8c117f5c-209a-97d8-79ce-a78f707f0545@gmail.com> <76c9c475-0180-aa49-3d4a-006d4e3f943c@gmail.com> <01470147-cec2-ffcb-407f-5bdfd4ffd3d3@gmail.com> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1481565567 656 195.159.176.226 (12 Dec 2016 17:59:27 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 12 Dec 2016 17:59:27 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Dec 12 18:59:24 2016 Return-path: Envelope-to: ged-emacs-devel@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 1cGUsj-0007cY-AJ for ged-emacs-devel@m.gmane.org; Mon, 12 Dec 2016 18:59:21 +0100 Original-Received: from localhost ([::1]:60370 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cGUsn-0007tn-HE for ged-emacs-devel@m.gmane.org; Mon, 12 Dec 2016 12:59:25 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:36416) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cGUBg-0006ow-QN for emacs-devel@gnu.org; Mon, 12 Dec 2016 12:14:53 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cGUBc-0003ZB-Qr for emacs-devel@gnu.org; Mon, 12 Dec 2016 12:14:52 -0500 Original-Received: from [195.159.176.226] (port=51404 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cGUBc-0003Z3-Jv for emacs-devel@gnu.org; Mon, 12 Dec 2016 12:14:48 -0500 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1cGUBI-0008AV-Md for emacs-devel@gnu.org; Mon, 12 Dec 2016 18:14:28 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 18 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:u9B7neVm2kllt791dQKdcakcnGM= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.159.176.226 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:210359 Archived-At: > (fmt "This is %{thing}.2f" > :thing (replace-regexp-in-string " +" " " thing)) I think the above is clearly better than `preformat` under one condition: make it a function rather than a macro. The downside (other than performance, tho that can be compounded by a compiler-macro) is that (fmt "This is %{thing}.2f") won't work any more, you'll need (fmt "This is %{thing}.2f" :thing thing) instead. Stefan