bug#46827: Broken initial size of GTK3 frame

[Juri Linkov]

>>> display engine - the entity responsible for detecting whether a tab bar
>>> line must be wrapped - can tell.  We could easily set the value of the
>>> 'tab-bar-lines' parameter to that - it would make more sense than what
>>> we have now.  Currently, (frame-parameter nil 'tab-bar-lines) yields "3"
>>> when I have one logical tab bar line that wraps when I make the frame
>>> narrow enough.
>>
>> I see the same.
>
> Do we want to change it?  Then we'd probably have to change the
> semantics of this for tool bar and menu bar lines too.

Isn't this a bug that the tool bar and menu bar incorrectly calculate lines?

> Note: In practice we care only about zero or not zero here.

It could also help to detect the situation when lines are wrapped.