From mboxrd@z Thu Jan 1 00:00:00 1970 From: Linus Torvalds Subject: Re: Best way to generate a git tree containing only a subset of commits from another tree? Date: Wed, 22 Mar 2006 19:43:25 -0800 (PST) Message-ID: References: <4421EF5F.3000601@op5.se> <7vu09q54a6.fsf@assigned-by-dhcp.cox.net> <442213F4.7040603@op5.se> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: Junio C Hamano , git@vger.kernel.org, Anton Altaparmakov X-From: git-owner@vger.kernel.org Thu Mar 23 04:43:43 2006 Return-path: Envelope-to: gcvg-git@gmane.org Received: from vger.kernel.org ([209.132.176.167]) by ciao.gmane.org with esmtp (Exim 4.43) id 1FMGjc-0005LR-2v for gcvg-git@gmane.org; Thu, 23 Mar 2006 04:43:41 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751036AbWCWDni (ORCPT ); Wed, 22 Mar 2006 22:43:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965141AbWCWDnh (ORCPT ); Wed, 22 Mar 2006 22:43:37 -0500 Received: from smtp.osdl.org ([65.172.181.4]:4503 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1751036AbWCWDng (ORCPT ); Wed, 22 Mar 2006 22:43:36 -0500 Received: from shell0.pdx.osdl.net (fw.osdl.org [65.172.181.6]) by smtp.osdl.org (8.12.8/8.12.8) with ESMTP id k2N3hQDZ030345 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO); Wed, 22 Mar 2006 19:43:27 -0800 Received: from localhost (shell0.pdx.osdl.net [10.9.0.31]) by shell0.pdx.osdl.net (8.13.1/8.11.6) with ESMTP id k2N3hPQW009911; Wed, 22 Mar 2006 19:43:26 -0800 To: Andreas Ericsson In-Reply-To: <442213F4.7040603@op5.se> X-Spam-Status: No, hits=0 required=5 tests= X-Spam-Checker-Version: SpamAssassin 2.63-osdl_revision__1.68__ X-MIMEDefang-Filter: osdl$Revision: 1.133 $ X-Scanned-By: MIMEDefang 2.36 Sender: git-owner@vger.kernel.org Precedence: bulk X-Mailing-List: git@vger.kernel.org Archived-At: On Thu, 23 Mar 2006, Andreas Ericsson wrote: > > > I've never understood what orthogonal means in this sense. "at a right angle" > as in flagging for attention or the exactly counter-productive to what one > should use? > No. Orthogonal in math may be literally "straight angle", but in non-geometric speak it means "independent" or "statistically unrelated". See http://wordnet.princeton.edu/perl/webwn?s=orthogonal and the two first definitions in particular. Ie two issues (or, in this case, "branches") are orthogonal if they have nothing in common - they fix two totally independent things. This is, btw, totally consistent with the geometric meaning of the word. Two vectors are orthogonal if they have no common component: the dot product is zero (ie the projection of one vector onto another is the null vector). So if you see two lines of development as being "vectors" from a common source, when they have nothing in common, they are orthogonal. Of course, the development space is neither three-dimensional nor euclidian, so it's a strange kind of vector, but still ;) Linus