From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: lg.zevlg@gmail.com Newsgroups: gmane.emacs.devel Subject: Re: file-exists-p on empty string Date: Wed, 27 Feb 2019 22:29:04 +0300 Message-ID: References: <83fts9kyay.fsf@gnu.org> <83va15jchs.fsf@gnu.org> <83sgw9jb32.fsf@gnu.org> Mime-Version: 1.0 (1.0) Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="266306"; mail-complaints-to="usenet@blaine.gmane.org" Cc: emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Feb 27 20:29:23 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 1gz4tN-00177K-B3 for ged-emacs-devel@m.gmane.org; Wed, 27 Feb 2019 20:29:21 +0100 Original-Received: from localhost ([127.0.0.1]:49646 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gz4tM-0004cL-61 for ged-emacs-devel@m.gmane.org; Wed, 27 Feb 2019 14:29:20 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:53664) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gz4tD-0004al-Jl for emacs-devel@gnu.org; Wed, 27 Feb 2019 14:29:12 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gz4tC-00067E-Nx for emacs-devel@gnu.org; Wed, 27 Feb 2019 14:29:11 -0500 Original-Received: from mail-lf1-x135.google.com ([2a00:1450:4864:20::135]:41009) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1gz4tB-00063U-AG; Wed, 27 Feb 2019 14:29:09 -0500 Original-Received: by mail-lf1-x135.google.com with SMTP id e27so13305049lfj.8; Wed, 27 Feb 2019 11:29:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=3sSj+nE9Tp3E3EXznmOrGGwsDt/r5OHD/ALSAw47LAM=; b=RdDp4hglf6N80LIuHd0VGDs07kBtTIrUwqQfrNWhsCAWR2UBx19BeKZA78gp5MXQP4 eoVEK3OrA+RFxdgEY4yVtOD132RpRdtNNpVdWvtMl/Q+ljHFH/qYb/zw2iLhNEKiNdLv q8o9vJzMpFQF0Jn5+fIrYhh2abxGON7Ye67fHzV3J/MA20pnKGkNQ6eDlb6LVuRAfxIc wQuTtSO2OSluNleRCohH2btUhrzDTpdVlOF2Ab6n9c+g2D/CnK3RSA117j3CpG2f7bL3 Nd5tsFHN6WQ8v5GfFuki3Bn11q4K01OQrwADByKxoL/i6mVGuAYba7Q0hL7tgdS6NTi6 Hp6A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=3sSj+nE9Tp3E3EXznmOrGGwsDt/r5OHD/ALSAw47LAM=; b=jmNAna4OpXhovkm5AXBOgSXEg5h2xZF6DdfM9oRGM2oeU4bwd6H7jooQ2crvUgoMrf ICViaRkKzr6qgRjgSaHt+QmseIbLbL2B/qXm7Vx90xiA5Pagxt9xY1TKqiHvtZL5JRaK 4sCFSOoodDXsLbV6IjUjrUjSZOieCbzYaT9eVJ3UP8hNOnHNXoWCbvsVmNapmWMR2PtG ozvMZGnj/eI6gFY09TufjWxVlHVN4brKO4EwDrcqusZyYxzk55iJHO+8svJ3wkkwjTRZ IXLmWSGKvHD5QfF6o3IqzlJKy9X/qmlf1rKjfjgB36iRscmecFB4ZglCgYu6VPKDXx7/ D9KA== X-Gm-Message-State: AHQUAuaO2uPpgAboycMB/uiN/SO0jq7Nj4HMYWHlT18r/dLPvsNh51jv LHnsbVE/1mxfd0RVtVagq70laDhm X-Google-Smtp-Source: AHgI3IaHin7AqPdvfF8hHPyIwMbgAWRhsuQmlinCW8jQELALXbPtzhWPTZ4pr+9gi28O4fVrZl6veA== X-Received: by 2002:a19:4d08:: with SMTP id a8mr1858026lfb.14.1551295747027; Wed, 27 Feb 2019 11:29:07 -0800 (PST) Original-Received: from [100.67.164.232] ([31.173.81.184]) by smtp.gmail.com with ESMTPSA id b18sm4238455lfj.80.2019.02.27.11.29.05 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 27 Feb 2019 11:29:05 -0800 (PST) X-Mailer: iPad Mail (16A404) In-Reply-To: <83sgw9jb32.fsf@gnu.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::135 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:233672 Archived-At: 27 =D1=84=D0=B5=D0=B2=D1=80. 2019 =D0=B3., =D0=B2 22:16, Eli Zaretskii =D0=BD=D0=B0=D0=BF=D0=B8=D1=81=D0=B0=D0=BB(=D0=B0): >> From: lg.zevlg@gmail.com >> Date: Wed, 27 Feb 2019 22:04:15 +0300 >> Cc: emacs-devel@gnu.org >>=20 >>> Why do you need to reject empty strings? >>=20 >> Filenames are generated externally, and the tool uses empty string notion= for no-file semantic >=20 > Isn't that un-Emacsy? Why not nil? That thing is out of my control, however `nil` is something specific and nee= d to be handled in special way, strings are universal Another exmaple is just a text file with filenames on each line, where empty= lines occurs, you also need to check for empty string filenames =E2=80=94 lg=