Function: gnus-set-sorted-intersection
gnus-set-sorted-intersection is a function alias for
gnus-sorted-nintersection, defined in gnus-range.el.gz.
Signature
(gnus-set-sorted-intersection LIST1 LIST2)
Documentation
Return intersection of LIST1 and LIST2 by modifying cdr pointers of LIST1.
LIST1 and LIST2 have to be sorted over <.