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From: Tomas Hlavaty <tom@logand.com>
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Subject: Re: Naming FCRs
Date: Thu, 30 Dec 2021 19:46:36 +0100
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To: Stefan Monnier <monnier@iro.umontreal.ca>
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On Thu 30 Dec 2021 at 09:00, Stefan Monnier <monnier@iro.umontreal.ca> wrote:
> for compiled code, closures do not carry the name of their captures
> variables.

This is the missing bit which should be added to emacs lisp.  And then
the emacs debugger should be able to display the captured variables and
values similar to what slime does for common lisp.