Using initial input to completing-read

[goncholden]

Have written the following function to disable electric-indent-mode.

Would like to use a initial input to `completing-read`, and am asking what I 
have to insert.

(defun myautoindent ()
"Disable or enable automatic re-indentation."
(interactive)

(let* ( (cseq '("Enable" "Disable"))
(csel (completing-read "Autoindent: " cseq nil t )) )

(pcase csel
("Enable"
(electric-indent-local-mode))
("Disable"
(electric-indent-local-mode 0))) ))