Support closing alpha when opening a file in a new tab rather than the current buffer.

[lougreenwood]

I work using tabpages as my primary organisation method, specifically using tabdrop.

This means that when I open my nvim instance I see my alpha dashboard, I then use telescope to open a file using tabdrop and a new tabpage is created with my file.

The problem is this means that the first tabpage (which contains alpha) is not automatically closed.

From what I can see, this is currently handled by the BufUnload autocmd. However, if I try adding TabNew then it doesn't work since after switching tabs there is no alpha instance in the current tab to close.

[goolord]

@lougreenwood added the new config option close_on_tabnew in the branch close_on_tabnew, would you like to test? @lougreenwood

theme.config.close_on_tabnew = true

[avegancafe]

That worked for me @goolord !

[avegancafe]

@goolord on second glance, very frequently my whole vim just closes when using this feature. Do you know how to get around that?

[goolord]

maybe if alpha is the only open buffer, and you open a new tab vim just closes, i guess the solution would be for alpha to ensure there is at least one buffer open before closing the new tab (unless there is a more principled way of doing this like using a different autocommand event), i'll look into it later