Citation and blank lines

[Lars Haugseth <njus@larshaugseth.com>]

I want my citations to look like this:

* Bob wrote:
|
| Hi!
|
| How are you?

To accomplish this, I have the following in my .gnus.pl:

 ;; Message citation
 (setq message-cite-function 'message-cite-original-without-signature)
 (defun my-insert-citation-line ()
   "Function that inserts a simple citation line."
   (when message-reply-headers
     (insert "* " (mail-header-from message-reply-headers) " wrote:\n|\n")))
 (setq message-citation-line-function 'my-insert-citation-line)
 (setq message-yank-prefix "| ")

This almost works. The only problem is, blank lines in the
cited text yields '>' instead of '|' as prefix, like this:

* Bob wrote:
|
| Hi!
>
| How are you?

Any ideas why this is happening and what I can do to fix it?

-- 
Lars Haugseth