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From: Richard Stallman <rms@gnu.org>
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Subject: lexbind
Date: Sun, 02 Mar 2008 12:25:13 -0500
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The recent bytecomp bug, fixed (mostly) by renaming some local
variables, gives an argument for installing the lexbind branch.
The main issues about it are

(1) What are good ways to declare certain variables dynamic?

(2) What packages will break?

I think we have made considerable advances in the past year in
reducing what will break.