Add shell-pop-full-span to get a wide terminal

Let me suggest 'shell-pop-full-span' as a new function.
It allows you to pop up a terminal which has the same width as your Emacs window.

I know it can also be done with 'full' mode,
but in many cases, I want to watch other frames while I'm using a terminal.

shell-pop-full-span is enabled with only adding a following line into your .emacs .

    (setq shell-pop-full-span t)

What do you think about it?
Thank you for your consideration.