From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Stephen J. Turnbull" Newsgroups: gmane.emacs.devel Subject: Re: Raw string literals in Emacs lisp. Date: Sun, 03 Aug 2014 22:12:16 +0900 Message-ID: <87y4v5lntb.fsf@uwakimon.sk.tsukuba.ac.jp> References: <878ungor1v.fsf@uwakimon.sk.tsukuba.ac.jp> <8761ijng08.fsf@uwakimon.sk.tsukuba.ac.jp> <871tt7lzro.fsf@fencepost.gnu.org> <53D567FD.4030708@porkrind.org> <87r412iobp.fsf@lifelogs.com> <53D9586F.6020705@porkrind.org> <87bns6in3g.fsf@lifelogs.com> <20140802084744.GA3541@acm.acm> <87vbqbqmn3.fsf@fencepost.gnu.org> <8738dem5hr.fsf@uwakimon.sk.tsukuba.ac.jp> <87zjfmowu0.fsf@fencepost.gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 X-Trace: ger.gmane.org 1407071580 4926 80.91.229.3 (3 Aug 2014 13:13:00 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 3 Aug 2014 13:13:00 +0000 (UTC) Cc: emacs-devel@gnu.org To: David Kastrup Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Aug 03 15:12:53 2014 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1XDvaj-0005Ef-Gs for ged-emacs-devel@m.gmane.org; Sun, 03 Aug 2014 15:12:49 +0200 Original-Received: from localhost ([::1]:47985 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XDvag-00028v-Vq for ged-emacs-devel@m.gmane.org; Sun, 03 Aug 2014 09:12:46 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:41788) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XDvaV-0001zB-Vo for emacs-devel@gnu.org; Sun, 03 Aug 2014 09:12:43 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XDvaO-0003Vq-G0 for emacs-devel@gnu.org; Sun, 03 Aug 2014 09:12:35 -0400 Original-Received: from mgmt1.sk.tsukuba.ac.jp ([130.158.97.223]:54815) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XDvaG-0003S4-BF; Sun, 03 Aug 2014 09:12:20 -0400 Original-Received: from uwakimon.sk.tsukuba.ac.jp (uwakimon.sk.tsukuba.ac.jp [130.158.99.156]) by mgmt1.sk.tsukuba.ac.jp (Postfix) with ESMTP id BDE073FA0B00; Sun, 3 Aug 2014 22:12:16 +0900 (JST) Original-Received: by uwakimon.sk.tsukuba.ac.jp (Postfix, from userid 1000) id B06C11A28DD; Sun, 3 Aug 2014 22:12:16 +0900 (JST) In-Reply-To: <87zjfmowu0.fsf@fencepost.gnu.org> X-Mailer: VM undefined under 21.5 (beta34) "kale" acf1c26e3019 XEmacs Lucid (x86_64-unknown-linux) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 130.158.97.223 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 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-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:173400 Archived-At: David Kastrup writes: > At any rate, things can get more complex, like with > > (format "%s%c\n""r#"?\") => "r#\" > " I'm not really worried about more complex. I am concerned about whether there's an unambiguous answer to "what is the value -- or error -- of eval-print-last-sexp at point?" In the case of (format "%s%c\n""r#"?\")-!- it's "r#\"\n". But for (format "%s%c\n""r#"?\"-!-) you could argue that it's ?\" (that's XEmacs's opinion) or "?\\". I guess for XEmacs (which already has this syntax in the wild) the rule should be "longest match wins" (because otherwise there's no way to evaluate r#"?\" in an interactive buffer), but for Emacs that looks like a deal-killer, and it's already present with just r#"?\". *sigh*