bug#68765: 30.0.50; Adding window-tool-bar package.

[Juri Linkov]

>>> I'm not sure if this provides a clean interface.
>>> Have you tried to show both window-tool-bar and tab-line tabs
>>> on the same tab-line?  Do you think this combination is usable?
>>> Or maybe better just repurpose the tab-line in window-tool-bar.el
>>> exclusively for window-local tool-bar?
>> The implementation I provided works fine for me with both
>> window-tool-bar-mode and tab-line-mode enabled as long as there are not
>> too many tabs.  I could see further adding a way to specify the max width
>> tabs are able to take up if you think that's necessary.
>
> It's been four weeks and I've seen no reply to this comment.  Are there any
> other concerns?

Sorry, I didn't know that you expected that I should review your patch -
I was silent because your last patch has no changes in tab-line.el,
so I have no more objections in this regard.

As for combining of tabs and the tool-bar on the tab-line,
I don't think this is feasible to achieve a consistent solution.
So users have to choose only one feature at a time:
whether buffer tabs in the tab-line or the window-local tool-bar.