From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.176.0/21 X-Spam-Status: No, score=-3.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MSGID_FROM_MTA_HEADER,RP_MATCHES_RCVD shortcircuit=no autolearn=ham autolearn_force=no version=3.4.0 From: Rogan Dawes Subject: Re: [RFC/PATCH] Implement poor-man's submodule support using commit hooks Date: Wed, 20 Dec 2006 16:33:40 +0200 Message-ID: <458949C4.1020207@dawes.za.net> References: <200612201309.02119.andyparkins@gmail.com> <45893AC6.910D5748@eudaptics.com> <200612201347.13805.andyparkins@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit NNTP-Posting-Date: Wed, 20 Dec 2006 14:35:56 +0000 (UTC) Cc: Git Mailing List Return-path: Envelope-to: gcvg-git@gmane.org User-Agent: Thunderbird 2.0b1 (Windows/20061206) Original-Newsgroups: gmane.comp.version-control.git In-Reply-To: <200612201347.13805.andyparkins@gmail.com> Precedence: bulk X-Mailing-List: git@vger.kernel.org Archived-At: Received: from vger.kernel.org ([209.132.176.167]) by dough.gmane.org with esmtp (Exim 4.50) id 1Gx2X6-0003gQ-3W for gcvg-git@gmane.org; Wed, 20 Dec 2006 15:35:00 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965090AbWLTOe5 (ORCPT ); Wed, 20 Dec 2006 09:34:57 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965095AbWLTOe5 (ORCPT ); Wed, 20 Dec 2006 09:34:57 -0500 Received: from sumo.dreamhost.com ([66.33.216.29]:52467 "EHLO sumo.dreamhost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965090AbWLTOe4 (ORCPT ); Wed, 20 Dec 2006 09:34:56 -0500 Received: from spunkymail-a18.dreamhost.com (sd-green-bigip-81.dreamhost.com [208.97.132.81]) by sumo.dreamhost.com (Postfix) with ESMTP id E6C7517D936 for ; Wed, 20 Dec 2006 06:34:53 -0800 (PST) Received: from [192.168.201.100] (dsl-146-25-74.telkomadsl.co.za [165.146.25.74]) by spunkymail-a18.dreamhost.com (Postfix) with ESMTP id C62A85B531; Wed, 20 Dec 2006 06:33:42 -0800 (PST) To: Andy Parkins Sender: git-owner@vger.kernel.org Andy Parkins wrote: > On Wednesday 2006 December 20 13:29, Johannes Sixt wrote: > >>> + cat "$GITMODULES" | >> useless-use-of-cat-syndrome > > I tried > > while > do > done < file1 > file1 > > And that didn't work. It wouldn't, since the redirection overwrites the file at the same time as trying to read from it. A better way is to redirect to a temp file, and rename it if the previous operation was successful. e.g. 0 $ echo true > t 0 $ sed 's/true/false/g' < t > t~ && mv t~ t || rm t~ 0 $ cat t false and 0 $ echo true > t 0 $ (sed 's/true/false/g' < t > t~; false) && mv t~ t || rm t~ 0 $ cat t true 0 $ ls t~ ls: t~: No such file or directory 2 $