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Re: Unbound variable warning/exception

From: Ludovic Courtès
Subject: Re: Unbound variable warning/exception
Date: Sun, 20 Dec 2020 22:36:29 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux)


Aleix Conchillo Flaqué <> skribis:

> On Fri, Dec 18, 2020 at 5:26 PM Christopher Lam
> <> wrote:
>> Hi guilers, I saw in guix the incredibly useful unbound-variable exception
>> printer written by Ludovic. I've adapted for use in gnucash as
>> -- there are now in
>> guile 3.0.4 many more unbound-var warnings than in 3.0.2 -- wouldn't it be
>> a useful hint to add to the warning in core guile as well?
> Wow, this is great!
> This should definitely be added to guile by default.

In Guix, the hint is displayed by an 'unbound-variable exception
handler, not by the 'unbound-variable printer; I think doing it in the
printer could be confusing.

Perhaps what could be done is export an 'unbound-variable handler that
does all this, and have the REPL use it?


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