bug#39649: 27.0.60; tab-line doesn't scroll

[João Guerra]

Issue no longer exists when I load your file in the end (ie. after
enabling the mode and customizing tab-line-tabs-function).

On Thu, 27 Feb 2020 at 23:39, Juri Linkov <juri@linkov.net> wrote:
>
> > 1. emacs -Q
> > 2. M-x load-file tab-line-1.el
> > 3. M-x global-tab-line-mode
> > 4. M-: (setq tab-line-tabs-function #'tab-line-tabs-mode-buffers)
> > 5. https://youtu.be/fQlrP0dlBbw
>
> Thanks, now it's clear where the problem is:
> the buffer *Messages* shows that old code is loaded,
> i.e. first you load the new file tab-line-1.el
> (the first line in the buffer *Messages*),
> but later its functions are overridden by old file
> (the third line in the buffer *Messages*).
> Only the new command 'test1' remains loaded,
> all other functions are overridden from old file
> tab-line.el.
>
> I believe this could be solved by changing the loading order:
>
> 1. emacs -Q
> 2. M-x global-tab-line-mode
>    - this will load old file tab-line.el
> 3. M-x load-file tab-line-1.el
>    - old functions will be overridden by new file tab-line-1.el
>
> Please try this.