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-rw-r--r--lisp/gnus/message.el9
1 files changed, 7 insertions, 2 deletions
diff --git a/lisp/gnus/message.el b/lisp/gnus/message.el
index 14d8d30f8a..32d740b019 100644
--- a/lisp/gnus/message.el
+++ b/lisp/gnus/message.el
@@ -3879,8 +3879,13 @@ This function uses `mail-citation-hook' if that is non-nil."
(defun message-insert-formatted-citation-line (&optional from date tz)
"Function that inserts a formatted citation line.
The optional FROM, and DATE are strings containing the contents of
-the From header and the Date header respectively. The optional TZ
-is a number of seconds, overrides the time zone of DATE.
+the From header and the Date header respectively.
+
+The optional TZ is omitted or nil for Emacs local time, t for
+Universal Time, `wall' for system wall clock time, or a string as
+in the TZ environment variable. It can also be a list (as from
+`current-time-zone') or an integer (as from `decode-time')
+applied without consideration for daylight saving time.
See `message-citation-line-format'."
;; The optional args are for testing/debugging. They will disappear later.