From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 20830 invoked by alias); 31 Mar 2018 05:23:28 -0000 Mailing-List: contact zsh-users-help@zsh.org; run by ezmlm Precedence: bulk X-No-Archive: yes List-Id: Zsh Users List List-Post: List-Help: List-Unsubscribe: X-Seq: 23293 Received: (qmail 25922 invoked by uid 1010); 31 Mar 2018 05:23:28 -0000 X-Qmail-Scanner-Diagnostics: from mail-lf0-f51.google.com by f.primenet.com.au (envelope-from , uid 7791) with qmail-scanner-2.11 (clamdscan: 0.99.2/21882. spamassassin: 3.4.1. Clear:RC:0(209.85.215.51):SA:0(-1.9/5.0):. Processed in 1.481798 secs); 31 Mar 2018 05:23:28 -0000 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on f.primenet.com.au X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_PASS,T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.1 X-Envelope-From: schaefer@brasslantern.com X-Qmail-Scanner-Mime-Attachments: | X-Qmail-Scanner-Zip-Files: | DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=brasslantern-com.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=U9vVZeFgCGbwpiCGkGLj6v0Mwp2/lzetosCgFFOf9uE=; b=DUhmqdFRzvVJuGGCa/BA70+hqPSaRkPPXcjHYacg7j5B5sB0+PIp7Ca9VgzuVZ1Gg+ 3qF+OIkdmVwRR5kEeGRnrfI2uk2FepNqQuBdQ2nXEG0ypkzVmJ6U+c556IlJaQzTeaSC lr9pRR0SnAPypdAKVZUSVyp++o4VJdNFQdNmIGx5fxrLQZZVxgvIPJR2c5FUJAklTkE6 umrrIgQYiSPS3rW/sjb5sROvoca66x6GohOXr6Dz8OGjEKHCSkz2MZoMuTgHA4tP2Ezl zm5ZoNo0GoYkUYng6t0EoVN9HQHBzH1PvKAzR5JFnporjoCBhZn1L97t1YP/aaMP2HRf 1a/g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=U9vVZeFgCGbwpiCGkGLj6v0Mwp2/lzetosCgFFOf9uE=; b=faCaV/FNZm91lMUZwtGIVAqLyHfiBCIsGX52rRCzmwzgI4JqzNGnCOgBbv+EKaZkg0 0V4TK/BMlUkuDpsBJ2x/hH10LTl/iWfPuTLbZknotTCgy/OLoj3BuzT6VPKG8qVCcfM9 7nKCcdfpXIJtcGa8C3f8RjrE912aVqvSjiOZn3xn4h02Y0r1zTV4KbsbTIh0HImNRtG3 sBqhuOw8vcGDA/HuQX3BAneTcGa/wHrPiONJWg77aLpgENa9CKfhLXGcV0fnYUYj1QdH RBtG+ljhPNgoNZceos2pugeBVek7sZqXHa+D9aQ1PJ7FSMkiX1m62GYluNTHHFSufp7E pgsg== X-Gm-Message-State: ALQs6tDidLyvDCG4DkCiTG4Xfy8E7ySNKTuccTsEw0iVznoRjUul3EC/ /tS5mpsijZ4F5gWNCSwSzRu7tePkqOeAtQl04vkuCPdM X-Google-Smtp-Source: AIpwx4+h/ullAY2vu+iZ4aD9eZBigRDV0TFl+T8wlctDFyUSDHz4WztG3xmmzhQMm6+2ORQ+MNypAO4Uq/l9mVWL9I4= X-Received: by 10.46.91.21 with SMTP id p21mr981539ljb.38.1522473801525; Fri, 30 Mar 2018 22:23:21 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <03b1320b-c248-adbe-55a3-49a3673453bd@eastlink.ca> References: <9e0faf6b-b19e-b6d6-0eb7-6ea20b2c2154@eastlink.ca> <03b1320b-c248-adbe-55a3-49a3673453bd@eastlink.ca> From: Bart Schaefer Date: Fri, 30 Mar 2018 22:23:20 -0700 Message-ID: Subject: Re: local unfunction To: Zsh Users Content-Type: text/plain; charset="UTF-8" On Fri, Mar 30, 2018 at 5:30 PM, Ray Andrews wrote: > > playing with Mikael's use of parenthesis -- I'd swear this is the first time > I've seen any such thing -- and it seems too good to be true, so far it just > works. Are there any lurking gotchas? It's just creating a subshell, like any other time you'd put one or more commands in parentheses. The "lurking gotcha" is that because it is a subshell it can't affect the parent shell in any way. That's what Mikael means by "cancel all other side effects" which he demonstrates with a=5. > Disadvantages? It doesn't seem any slower. It does fork an additional process. > BTW, just to keep flogging a dead horse: > > function test1 () > { > echo "\none" > whence -a "zsh" > echo "\ntwo" > whence -ma "zsh*" > echo "\nthree" > whence -m "zsh*" > } Try adding -w to get whence to tell you which hash table it's reading from.