From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1R3b3b-0006Tx-KY for garchives@archives.gentoo.org; Tue, 13 Sep 2011 22:02:19 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id E16AC21C299; Tue, 13 Sep 2011 22:02:07 +0000 (UTC) Received: from mail-bw0-f53.google.com (mail-bw0-f53.google.com [209.85.214.53]) by pigeon.gentoo.org (Postfix) with ESMTP id AAFBB21C2AD for ; Tue, 13 Sep 2011 22:01:26 +0000 (UTC) Received: by bkbzt12 with SMTP id zt12so1254889bkb.40 for ; Tue, 13 Sep 2011 15:01:25 -0700 (PDT) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-dev@lists.gentoo.org Reply-to: gentoo-dev@lists.gentoo.org MIME-Version: 1.0 Received: by 10.204.138.216 with SMTP id b24mr925064bku.130.1315951285544; Tue, 13 Sep 2011 15:01:25 -0700 (PDT) Sender: antarus@scriptkitty.com Received: by 10.204.115.146 with HTTP; Tue, 13 Sep 2011 15:01:25 -0700 (PDT) In-Reply-To: <201109131756.19714.vapier@gentoo.org> References: <201109131756.19714.vapier@gentoo.org> Date: Tue, 13 Sep 2011 15:01:25 -0700 X-Google-Sender-Auth: bmvZ_2bw-qe4DLX5V9a7Yox-sdg Message-ID: Subject: Re: [gentoo-dev] new `usex` helper From: Alec Warner To: gentoo-dev@lists.gentoo.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Archives-Salt: X-Archives-Hash: a119efdbadf704191ef36378b777b618 On Tue, Sep 13, 2011 at 2:56 PM, Mike Frysinger wrote: > i keep writing little helpers like this in ebuilds: > usex() { use $1 && echo ${2:-yes} || echo ${3:-no} ; } usex...you naughty boy. > > this is so i can do: > =C2=A0 =C2=A0 =C2=A0 =C2=A0export some_var=3D$(usex some_flag) > and get it set to "yes" or "no" If the intent is to use it for logic: export some_var=3D$(usex some_flag) if [[ $some_var =3D=3D yes ]]; then # buttsex fi Then I recommend making true / false the default and then doing if $some_var; then # buttsex fi If you are using it more like use_enable then...thats ok I guess ;p -A > > or if i want something a little different, i can do: > =C2=A0 =C2=A0 =C2=A0 =C2=A0export some_var=3D$(usex some_flag true false) > =C2=A0 =C2=A0 =C2=A0 =C2=A0export some_var=3D$(usex some_flag y n) > > useful enough for EAPI ? =C2=A0or should i just stick it into eutils.ecla= ss ? =C2=A0OR > BOTH !? > -mike >