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bug#13814: 24.3.50; Dynamic variables shadowing prevent defvar
From: |
Lars Ingebrigtsen |
Subject: |
bug#13814: 24.3.50; Dynamic variables shadowing prevent defvar |
Date: |
Wed, 25 Aug 2021 13:00:37 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Stefan Monnier <monnier@iro.umontreal.ca> writes:
> FWIW, this bug was presumably fixed with:
>
> commit a104f656c8217b027866d32e8d7bf024a671e3cc
> Author: Stefan Monnier <monnier@iro.umontreal.ca>
> Date: Fri Aug 2 17:16:33 2013 -0400
>
> So we should probably close it.
Yup; closing it now.
> Yes, this is a new feature: when we get to the `defvar` the problem is
> not just that we need to "punch through" and define the toplevel/dynamic
> value of `bug-variable` but also that the `let` would need to be
> retroactively changed to be dynamic, which would in general require
> time-travel, hence the error.
That's being defeatist -- surely theory implies that time travel should
be available any day now...
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no