Re: Documentation of tab-bar-show and friends

[Juri Linkov]

> The current documentation of this seems to be incomplete and for some
> reason hides some of the functionality.
>
> First, the NEWS entry for tab-bar-show says:
>
>   *** The tab bar is frame-local when 'tab-bar-show' is a number.
>   Show/hide the tab bar independently for each frame, according to the
>   value of 'tab-bar-show'.
>
> What does it mean "frame-local" in this case?  Does it mean one should
> use a frame parameter called tab-bar-show?  Or does it mean something
> else?

This means it affects each frame separately.

> Next, the above says "a number", but the doc string of tab-bar-show,
> the defcustom forms, and the manual only describe one value: 1.
> However, the code does:
>
>    ((natnump tab-bar-show)
>     (if (> (length (funcall tab-bar-tabs-function frame)) tab-bar-show) 1 
> 0))))
>
> So tab-bar-show can be meaningfully set to a number other than 1.
> This is undocumented, for some reason.  Is that intentional?

Probably no one would want to use a number other than 1.