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From: BobD <daycandle@gmail.com>
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Subject: Re: What does "lacks a prefix" mean?
Date: Wed, 8 Jul 2015 11:17:44 -0700 (PDT)
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Thanks!

So the warning calls attention to a good-citizenship rule, not a logic issue.

How do I create a variable with local execution scope, i.e. to be known within a function, not to other elisp functions, and regardless of which buffer is local?