Add diary comments feature.

* lisp/calendar/diary-lib.el (diary-comment-start, diary-comment-end):
New options.
(diary-add-to-list): Strip comments from the displayed string.
(diary-mode): Set comment-start and comment-end.

* doc/emacs/cal-xtra.texi (Fancy Diary Display): Mention diary comments.

* etc/NEWS: Mention this.

1 files changed, 4 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 5094ecfc4fc..61713c71fc8 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -447,6 +447,10 @@ You can get a comparable behavior with:
 
 ** Calendar, Diary, and Appt
 
++++
+*** Diary entries can contain non-printing `comments'.
+See the variable `diary-comment-start'.
+
 *** New function `diary-hebrew-birthday'.
 
 ---