From: Michael Heerdegen <michael_heerdegen@web.de>
To: BP25 <bp25@riseup.net>
Cc: help-gnu-emacs@gnu.org
Subject: Re: help with add-to-list syntax
Date: Thu, 31 Oct 2024 11:35:14 +0100 [thread overview]
Message-ID: <87frocimql.fsf@web.de> (raw)
In-Reply-To: <87froguwpv.fsf@riseup.net> (BP's message of "Mon, 28 Oct 2024 14:29:48 +0000")
BP25 <bp25@riseup.net> writes:
> Hello! Could any of you be so kind as to help me understand this,
> please? I have
>
> (custom-set-variables
> '(warning-suppress-types '((undo\ discard-info))))
>
> in my .emacs. If I start emacs, do load-file .emacs, then evaluate
> (add-to-list 'warning-suppress-types '(undo\ discard-info)) I get an
> error saying the variable warning-suppress-types is void.
After thinking about this again:
The explanation for your little miracle is probably that the variable is
autoloaded and the defining library "warnings" not necessarily loaded at
startup. `custom-set-variables' is clever enough to do the right thing
anyway. C-h v loads the defining library as a side effect so you always
see a defined variable even when it had not yet been defined.
The details may differ a bit depending on your Emacs version.
Michael.
prev parent reply other threads:[~2024-10-31 10:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-28 14:29 help with add-to-list syntax BP25
2024-10-29 16:12 ` Michael Heerdegen via Users list for the GNU Emacs text editor
2024-10-30 0:51 ` Joel Reicher
2024-10-30 10:29 ` BP25
2024-10-31 10:35 ` Michael Heerdegen [this message]
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