From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#12517: 24.2; (file-name-directory "~") returns nil Date: Wed, 26 Sep 2012 09:24:29 +0200 Message-ID: <83k3vhgsb6.fsf@gnu.org> References: Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1348644316 14461 80.91.229.3 (26 Sep 2012 07:25:16 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 26 Sep 2012 07:25:16 +0000 (UTC) Cc: 12517@debbugs.gnu.org To: Leo Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Sep 26 09:25:21 2012 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1TGlzk-0005Ui-PZ for geb-bug-gnu-emacs@m.gmane.org; Wed, 26 Sep 2012 09:25:20 +0200 Original-Received: from localhost ([::1]:53439 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TGlzf-0000Vw-Bl for geb-bug-gnu-emacs@m.gmane.org; Wed, 26 Sep 2012 03:25:15 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:45843) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TGlzZ-0000Vn-B5 for bug-gnu-emacs@gnu.org; Wed, 26 Sep 2012 03:25:13 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TGlzV-0003sN-Bj for bug-gnu-emacs@gnu.org; Wed, 26 Sep 2012 03:25:09 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:46678) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TGlzV-0003rk-90 for bug-gnu-emacs@gnu.org; Wed, 26 Sep 2012 03:25:05 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1TGlzR-0007ex-Ln for bug-gnu-emacs@gnu.org; Wed, 26 Sep 2012 03:25:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 26 Sep 2012 07:25:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 12517 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 12517-submit@debbugs.gnu.org id=B12517.134864427829414 (code B ref 12517); Wed, 26 Sep 2012 07:25:01 +0000 Original-Received: (at 12517) by debbugs.gnu.org; 26 Sep 2012 07:24:38 +0000 Original-Received: from localhost ([127.0.0.1]:56224 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1TGlz0-0007eI-Fn for submit@debbugs.gnu.org; Wed, 26 Sep 2012 03:24:36 -0400 Original-Received: from mtaout21.012.net.il ([80.179.55.169]:34217) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1TGlyw-0007e9-RE for 12517@debbugs.gnu.org; Wed, 26 Sep 2012 03:24:31 -0400 Original-Received: from conversion-daemon.a-mtaout21.012.net.il by a-mtaout21.012.net.il (HyperSendmail v2007.08) id <0MAY00H0042HII00@a-mtaout21.012.net.il> for 12517@debbugs.gnu.org; Wed, 26 Sep 2012 09:24:32 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout21.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MAY00H784KVF580@a-mtaout21.012.net.il>; Wed, 26 Sep 2012 09:24:32 +0200 (IST) In-reply-to: X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.13 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) X-Received-From: 140.186.70.43 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:64906 Archived-At: > From: Leo > Date: Wed, 26 Sep 2012 10:35:10 +0800 > > I was bitten by this corner case that (file-name-directory "~") returns > nil. As does (file-name-directory "a"). > I wonder if this is a bug/oversight? I think it is neither. file-name-directory works on the syntax of its argument, not on its semantics. The ELisp manual says: -- Function: file-name-directory filename This function returns the directory part of FILENAME, as a directory name (*note Directory Names::), or `nil' if FILENAME does not include a directory part. "FILENAME does not include a directory part" means literally that: the string FILENAME must _include_ a directory part for file-name-directory to return a non-nil result. If you want the directory of its argument, even if the argument is given as any kind of shorthand, run that argument through expand-file-name first.