Tue Nov 25 11:50:16 1997  Jari Aalto  <jari.aalto@poboxes.com>

	* gnus-art.el (gnus-article-edit-article): When going edit mode,
	clear the buffer modified flag.
	(gnus-article-edit-exit): Added modified-flag
	which keeps the modified state of the edit buffer

	* gnus-sum.el (gnus-summary-edit-article-done): Added
	`buffer-modified-p' test. Article is not written back to disk
	if buffer is unmodified. Now uses `when' instead of `if'