Subject: Re: bug#76252: 31.0.50; tab-line stopped working

From: Eli Zaretskii <[email-masked]>
Date: Thu, 13 Feb 2025 10:19:15 +0200

> Date: Thu, 13 Feb 2025 08:25:43 +0100
> From: "Pedro A. Aranda" <[email-masked]>
> 
> Repeating:
> 
> M-x global-tab-line-mode
> 
> will produce the following alternating errors:
> apply: Wrong type argument: number-or-marker-p, (1)
> apply: Wrong type argument: number-or-marker-p, (-1)

I cannot reproduce this with today's master branch.  Please set
debug-on-error non-nil and post the Lisp backtrace from the error.

Thanks.