From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <zsh-users-return-20910-mason-zsh=primenet.com.au@zsh.org>
Received: (qmail 9926 invoked by alias); 7 Nov 2015 06:38:42 -0000
Mailing-List: contact zsh-users-help@zsh.org; run by ezmlm
Precedence: bulk
X-No-Archive: yes
List-Id: Zsh Users List <zsh-users.zsh.org>
List-Post: <mailto:zsh-users@zsh.org>
List-Help: <mailto:zsh-users-help@zsh.org>
X-Seq: 20910
Received: (qmail 28956 invoked from network); 7 Nov 2015 06:38:40 -0000
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on f.primenet.com.au
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,T_DKIM_INVALID
	autolearn=ham autolearn_force=no version=3.4.0
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:date:message-id:subject:from:to
         :cc:content-type;
        bh=ImCZVz7GHiCq81mllANyVwIgTV23P2M7wWOWXyY46ns=;
        b=gFjCSGrwZXOXck6ds7SD7RrVKxCLmPb9iw+Mr68aEivl4n2SayMPfr0jeyB6WVmrfk
         Ot75qRpRXaOCthQ6SjcRE8wIVO1wx5QjqMyBN+yklHkTy4G/Q0sVwv78NiR4H0BwZ/Ej
         WA5JGwgOAh0Zgjz6O9lDkI0eTl3qQMwrE0zJ2SDmO0JcmDhBlGM6hkWQ087y5zsSM236
         lhHvGAHplyy8juXnqAktyASo7Z2fNDKC6Zdm9fhTNs4ydLdLj7dsNSLNCHdgt6aVfb+H
         gDvkwieGkJWmxkCmMHWTjmKYXep/2LnAsN/79AciY2eEZLujaOWKeBYzCqEWjriZv94/
         JyTA==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=1e100.net; s=20130820;
        h=x-gm-message-state:mime-version:in-reply-to:references:date
         :message-id:subject:from:to:cc:content-type;
        bh=ImCZVz7GHiCq81mllANyVwIgTV23P2M7wWOWXyY46ns=;
        b=EizTLRDW7aA7duJQsam9HzxsYC4srBKL13P3nUqwN3p7VjBhJeWP9ZkMh4yiABEz0A
         DCqNyc64/G6DLffJ0KsbHo7M0NcpMnNK/IInxxO5A3ziFjSlrfX8ACg8NoyDPmhFjkaa
         c8/z2ynfmsSZZ+NWJYPjBqM5SUtBeSHqC449BCPtAuwRJAjeJ0lkWIv+Oa+ujQYSUenO
         tpTjGqKG+6nE29IHFsqT2K3Js0LnXKfVSGVpSzJXb+9jYOCs2FfIJ0UlzyiZDmntXuoL
         hWC/kjyZ7lmdCAAqVj+WZqw1izgExmVsGXnWvgQ/oE6Gq6GcO8eT3Z6O/s+veXWxytW4
         SmfQ==
X-Gm-Message-State: ALoCoQn1otBc11Hi/85QlzCcwHD/0ChxFzsEkOGWN0WUDHKUaP8BWU3vHNElpFT2cva05c1QDn3q
MIME-Version: 1.0
X-Received: by 10.28.18.194 with SMTP id 185mr13300629wms.44.1446874687068;
 Fri, 06 Nov 2015 21:38:07 -0800 (PST)
In-Reply-To: <563D5ED5.1070102@eastlink.ca>
References: <563D5ED5.1070102@eastlink.ca>
Date: Fri, 6 Nov 2015 21:38:07 -0800
Message-ID: <CAH+w=7bzDJV5bLSr3=bVkAoOm-Yov3DU9w58eqr6daJFCNvw-w@mail.gmail.com>
Subject: Re: convolutions
From: Bart Schaefer <schaefer@brasslantern.com>
To: Ray Andrews <rayandrews@eastlink.ca>
Cc: Zsh Users <zsh-users@zsh.org>
Content-Type: text/plain; charset=UTF-8

On Fri, Nov 6, 2015 at 6:15 PM, Ray Andrews <rayandrews@eastlink.ca> wrote:
> Gentlemen:
>
>     echo "$(eval echo "\${$(cat in_file)}")" >! out_file
>
> That's the best I've been able to do expanding color variables, eg. " ${red}
> " into their native " \e[31;1m " in a file.

Just as an aside, this is the second code example you've posted
recently that can't possibly work in practice.  I can only assume
you're mis-transcribing in an attempt to simplify whatever your real
code is.

If I understand this correctly, you have a file that contains text
which looks like

   The following ${fg[red]}text is red${reset_color} and this is not

and you want to end up with the variables expanded in out_file as the
actual escape sequences?

    print -R "${(e)$(<in_file)}" >| out_file

Of course that will also replace other possible expansions that may
appear in the text of in_file.  If you really want to replace exactly
and only the specific references to color variables, you need
something like Zyx's sed expression.