Underline the current line (function inside)

[Jean Louis <bugs@gnu.support>]

This function is handy to underline the current line:

(defun underline-line ()
  "Underline the current line."
  (interactive)
  (let* ((start (line-beginning-position))
	 (end (line-end-position))
	 (length (- end start)))
    (end-of-line)
    (newline)
    (insert (make-string length ?=))
    (newline)))


When there is a line like this, a key binding or M-x underline-line
===================================================================

does that underlining as above.



Jean

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