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From: Jim Crossley <jim@crossleys.org>
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Subject: Finding variables by their value
Date: Mon, 04 Aug 2003 13:45:25 -0400
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I thought I remembered seeing somewhere that it was possible to search
for lisp variables that had a particular value.  Anyone know if that's
possible?

Like, say my w3m can't get to http://localhost/blah because it's
using a proxy, and I know the hostname of the proxy, so I want to find
the variable that contains the proxy so I can unset it.  What's the
command that says, "Show me the variable whose value contains X".

Thanks,
Jim