How can I check whether the current buffer is an eshell buffer?

Question

I'm trying to write a function which opens or closes an eshell window. So far I have:

    (defun bottom-window-eshell()
      (interactive)
      (let ((buf (eshell)))
        (switch-to-buffer (other-buffer buf))
        (switch-to-buffer-other-window buf)))

Answer 1

Not sure what you're asking, but maybe something like this helps?

(defun bottom-window-eshell()
  (interactive)
  (unless (eq major-mode 'eshell-mode)
    (switch-to-buffer-other-window (eshell))))