bug#51247: 28.0.60; Insufficient documentation of tab-bar.el internal functions

[Juri Linkov]

>> The tab bar is created from the list where elements are either a string,
>> or a menu-item with a title and a binding.  The title is displayed as
>> a button on the tab bar.  Clicking on such button calls the binding.
>> The binding usually is a command that switches tabs.  But the binding
>> can do everything.
>
> Thanks.  What if the function in tab-bar-format returns nil -- how is
> that handled?

Interesting question, I tried this

  (add-hook 'tab-bar-format 'ignore 1)

and everything still works fine.