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Re: Elisp assertion for debugging
From: |
Bruno Barbier |
Subject: |
Re: Elisp assertion for debugging |
Date: |
Sun, 19 Jun 2022 21:11:55 +0200 |
Ypo <ypuntot@gmail.com> writes:
> I am trying to debug my init file: C-u prefix is not working.
>
> I am using the elisp-bug-hunter package that has saved me many times in
> the past. But it doesn't work fine this time though, so it seems I need
> an “assertion elisp” to debug my init file.
>
> What elisp expression would return nil when C-u prefix works and non-nil
> when C-u prefix doesn't work?
>
> I have tried
>
> (eq (key-binding "C-u C-SPC") 'nil)
>
> but it is probably a nonsense.
>
> Best regards
This might work:
(unless (eq 'universal-argument (keymap-lookup global-map "C-u"))
(error "C-u has been redefined"))
Note that you don't need to quote nil:
'nil = nil
Also, this question is not really about org-mode; posting to the emacs
mailing list might increase your chance to get a good answer.
Best regards,