From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp484.redcondor.net (smtp484.redcondor.net [208.80.204.84]) by mail.openembedded.org (Postfix) with ESMTP id E8A427318E for ; Tue, 16 Aug 2016 14:03:17 +0000 (UTC) Received: from astoria.ccjclearline.com ([64.235.106.9]) by smtp484.redcondor.net ({c48374e7-08df-40d9-a0de-96cc9883a037}) via TCP (outbound) with ESMTPS id 20160816140308916_0484 for ; Tue, 16 Aug 2016 14:03:08 +0000 X-RC-FROM: X-RC-RCPT: Received: from [216.191.234.70] (port=29375 helo=crashcourse.ca) by astoria.ccjclearline.com with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.80) (envelope-from ) id 1bZezH-0003BA-04 for openembedded-core@lists.openembedded.org; Tue, 16 Aug 2016 10:05:03 -0400 Date: Tue, 16 Aug 2016 10:02:59 -0400 (EDT) From: "Robert P. J. Day" X-X-Sender: rpjday@ca624034.mitel.com To: OE Core mailing list Message-ID: User-Agent: Alpine 2.20 (LFD 67 2015-01-07) MIME-Version: 1.0 X-MAG-OUTBOUND: ccj.redcondor.net@64.235.106.9/32 Subject: subtle weirdness when you combine "_append" with "+="? X-BeenThere: openembedded-core@lists.openembedded.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Patches and discussions about the oe-core layer List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Aug 2016 14:03:18 -0000 Content-Type: text/plain; charset=US-ASCII was about to submit a small number of patches to clean up redundancy when people combine "_append" with "+=" (because it offends my delicate sensibilities), and ran across this in oe-core, unfs3_0.9.22.r497.bb: DEPENDS_append_class-nativesdk += "flex-nativesdk" uh, what? most of the time, i assume the above doesn't hurt, it's just ... silly. but normally, with "_append", you *need* to add the leading space explicitly, and that's not being done above. so does that mean that combining "_append" with "+=" *does* generate a leading space? that just makes my head hurt -- the possibility that "_append" is being used in a way that normally makes it fail, only to have "+=" step in and save the day. at which point "_append" saves processing that until the end of parsing? yeesh. thoughts? rday -- ======================================================================== Robert P. J. Day Ottawa, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ========================================================================