Highlighting a region as you type

[Scott Goldstein]

I've come up with a rather naive way of highlighting a
region as I type (i.e. between the mark and point) and
then copying the region to the kill-ring.

;; hihglight start
(defun myTestOn ()
  (interactive)
  (transient-mark-mode 1)
  (set-mark (point))
)

;; copy and end highlighting
(defun myTestOff ()
  (interactive)
  (copy-region-as-kill (mark) (point))
  (transient-mark-mode -1)
)

I don't want transient mark mode on at all times, but
it seems that there's a better way to do this than
toggling it on and off.

Can anyone give me suggestions of a better method?

Thanks.

Scott

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