Function: rectangle-number-line-callback
rectangle-number-line-callback is a byte-compiled function defined in
rect.el.gz.
Signature
(rectangle-number-line-callback START END FORMAT-STRING)
Source Code
;; Defined in /usr/src/emacs/lisp/rect.el.gz
(defun rectangle-number-line-callback (start _end format-string)
(move-to-column start t)
(insert (format format-string rectangle-number-line-counter))
(setq rectangle-number-line-counter
(1+ rectangle-number-line-counter)))