spoiler warnings, "next page" buttons, washing functions

spoiler warnings, "next page" buttons, washing functions

[Greg Stark]

So i've just started reading a newsgroup with spoiler warnings.
Spoiler warnings are there to prevent people from reading things that
spoil future episodes of a tv show or a movie; things like 
``Rosebud was his ______'' or the ``Maltese Falcon was ______''

The spoiler warnings usually consist of some subset of a  few ^L's lots of
blank lines, etc.  Gnus does pretty cool things with them, but not really cool
enough.  If there are multiple ^L's the i have to hit SPC several times to get
to the message; if there are 25 blank lines then lots of screen real-estate is
wasted; sometimes the spoiler space is quoted with >'s and it gets hidden as a
citation.

What i want is for Gnus to treat any sequence or combination of the following
as a single spoiler warning and hide it all, replacing it with a "Next Page"
button:
 

	^L's

	more than n blank lines
	
	more than m identical lines 
	(which should be replaced with button to show them)

	any whitespace surrounding any of the above



greg