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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Lisp watchpoints
Date: Sun, 29 Nov 2015 17:45:56 +0200
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To: Stefan Monnier <monnier@iro.umontreal.ca>
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> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: Eli Zaretskii <eliz@gnu.org>,  John Wiegley <jwiegley@gmail.com>,  emacs-devel@gnu.org
> Date: Sat, 28 Nov 2015 23:44:19 -0500
> 
> Actually, trapped writes won't work reliably for frame-local vars

Will they work for let-bound "local" variables?  What happens when
they go "out of scope"?