Re: Tabs (on macos)

[Alan Third]

On Tue, Sep 17, 2019 at 11:28:14PM +0300, Juri Linkov wrote:
> > It now builds but emacs crashes on start.  I don't have time to debug
> > it in gdb right now, but I'll look into it and send a proper
> > backtrace.  For now, here's the crash output:
> 
> Meanwhile, could you please answer a quick question:
> Does macOS builds support non-native tool-bar?
> 
> (info "(emacs) Tool Bars") contains this explanation:
> 
>      NS builds consider the tool bar to be a window decoration, and
>   therefore do not display it when a window is undecorated.  *Note
>   (elisp)Frame Parameters::.  On macOS the tool bar is hidden when the
>   frame is put into fullscreen, but can be displayed by moving the mouse
>   pointer to the top of the screen.
> 
> Does this mean that NS builds implement only external tool-bar?
> This might imply the need to use an external tab-bar as well.

NS doesn’t support a non‐native toolbar. I don’t see any reason why a
non‐native tab bar couldn’t be written, although I suppose it may have
to be a completely new implementation.

Cocoa provides a native tab bar, but it’s not programmable, it simply
merges (OS) windows together in one.
-- 
Alan Third