From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: file-exists-p on empty string Date: Wed, 27 Feb 2019 14:30:26 -0500 Message-ID: References: <83fts9kyay.fsf@gnu.org> <83va15jchs.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="20924"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Feb 27 20:34:43 2019 Return-path: Envelope-to: ged-emacs-devel@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 1gz4yX-0005IJ-NL for ged-emacs-devel@m.gmane.org; Wed, 27 Feb 2019 20:34:41 +0100 Original-Received: from localhost ([127.0.0.1]:49684 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gz4yW-0005qB-Ks for ged-emacs-devel@m.gmane.org; Wed, 27 Feb 2019 14:34:40 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:54134) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gz4yQ-0005q3-NT for emacs-devel@gnu.org; Wed, 27 Feb 2019 14:34:35 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gz4xv-00023O-84 for emacs-devel@gnu.org; Wed, 27 Feb 2019 14:34:12 -0500 Original-Received: from [195.159.176.226] (port=56426 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gz4xZ-0007hg-V2 for emacs-devel@gnu.org; Wed, 27 Feb 2019 14:33:45 -0500 Original-Received: from list by blaine.gmane.org with local (Exim 4.89) (envelope-from ) id 1gz4uZ-0000H0-4f for emacs-devel@gnu.org; Wed, 27 Feb 2019 20:30:35 +0100 X-Injected-Via-Gmane: http://gmane.org/ Cancel-Lock: sha1:jD8BiOCMICUohf8yv5U4pUX+TTw= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] 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:233673 Archived-At: >>> I use `(and (not (string-empty-p fn)) (file-exists-p fn))` at the >>> moment, but its kind of ugly >> Why do you need to reject empty strings? > Filenames are generated externally, and the tool uses empty string > notion for no-file semantic So the (not (string-empty-p fn)) test just reflects the tool's semantics and is not an artifact of some suboptimal behavior of file-exists-p. Stefan