2001-08-12 Simon Josefsson <jas@extundo.com>

2001-08-12  Simon Josefsson  <jas@extundo.com>
	Suggested by Kai.Grossjohann@CS.Uni-Dortmund.DE

	Support `recent' mark indicating newly arrived messages (to
	separate from old but unread messages).

	* nnimap.el (nnimap-retrieve-groups): Push dummy article into
	`nnmail-split-history' if recent is > 0.
	(nnimap-request-update-info-internal): Update `recent' marks.
	(nnimap-request-set-mark): Never set `recent' marks.
	(nnimap-mark-to-predicate-alist, nnimap-mark-to-flag-alist): Add
	recent.

	* gnus-sum.el (gnus-recent-mark): New mark.
	(gnus-newsgroup-recent): New variable.
	(gnus-summary-local-variables): Add gnus-newsgroup-recent.
	(gnus-summary-prepare-threads): Mark recent articles.
	(gnus-summary-add-mark): Support recent.
	(gnus-summary-update-secondary-mark): Support recent.

	* gnus.el (gnus-article-mark-lists): Add recent.