From: Mark Wooding <mdw@distorted.org.uk>
Date: Thu, 24 Jan 2013 09:56:48 +0000 (+0000)
Subject: zoneconf.in: Isolate our local variables from the configuration file.
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/zoneconf/commitdiff_plain/4b9857dfae846f9f58316b5026583b1df8b3748c?ds=inline;hp=4b9857dfae846f9f58316b5026583b1df8b3748c

zoneconf.in: Isolate our local variables from the configuration file.

I had a signature failure after changing the configuration file caused
by variables set in the config file interfering with those in the
command procedure.  There are good reasons why `confspc-eval' uses
`uplevel'; but this situation is bad, so it wants fixing properly.

Introduce a new procedure `isolate' which exists largely so its
variables can be clobbered with impunity.
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