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Tue, 26 Jul 2011 12:32:06 -0700
> (defun yank-repeat-newline (arg &optional nl)
> "With numerical ARG, repeat last yank ARG times.
> With optional arg NL, also insert newlines. "
> (interactive "p\nP*")
> (let ((nl nl)
> (num arg))
> (dotimes (i num)
> (if nl
> (insert (concat (car kill-ring) "\n"))
> (insert (car kill-ring))))))
You don't need the `let'.
But you cannot do what your doc string claims, at least not the way you're
As Teemu explained, there is only _one_ prefix arg. You can look at either its
numeric value or its raw value or both, but there is only ONE prefix arg.
You apparently want to have a prefix arg express both a numeric quantity and a
boolean. If the user uses C-u (or its variants) to specify a (non-nil) prefix
arg then, well, the raw value is non-nil. If the raw value is nil, then the
user did not use C-u (or its variants).
If you want to let the user specify a numeric value, default 1, and also specify
whether to add a newline, then one way to do that is to distinguish positive
from negative prefix arg (there's your boolean).
M-x yank... -> just one, no newline
M-- yank... -> one, newline
C-u -1 yank... -> one, newline
C-u -2 yank... -> two, newlines
C-u 2 yank... -> two, no newlines
Something like this:
(defun myyank (&optional arg)
(dotimes (i (abs arg))
(if (natnump arg)
(insert (car kill-ring))
(insert (concat (car kill-ring) "\n")))))
Drew Adams <=