Re: Increase text size of the minibuffer

(defvar my-minibuffer-font-height 1.7
   "Font height factor for the minibuffer. A value of 1.0 is the normal 
size.")

(defun my-setup-minibuffer-font ()
   "Set the font height for the minibuffer.
To be used in `minibuffer-setup-hook'."
   (setq-local face-remapping-alist
               `((default :height ,my-minibuffer-font-height))))

(add-hook 'minibuffer-setup-hook #'my-setup-minibuffer-font)

(read-string "Hello: ")

I see that above is only enlarging the text I am writing.

I think my function too. Me too I would like this to work well. Just 
don't know yet.

Jean Louis