;;; cal-dst.el --- calendar functions for daylight saving rules
-;; Copyright (C) 1993, 1994, 1995, 1996, 2001, 2002, 2003, 2004, 2005,
-;; 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+;; Copyright (C) 1993-1996, 2001-2014 Free Software Foundation, Inc.
;; Author: Paul Eggert <eggert@twinsun.com>
;; Edward M. Reingold <reingold@cs.uiuc.edu>
;; Maintainer: Glenn Morris <rgm@gnu.org>
;; Keywords: calendar
;; Human-Keywords: daylight saving time, calendar, diary, holidays
+;; Package: calendar
;; This file is part of GNU Emacs.
Some operating systems cannot provide all this information to Emacs; in this
case, `calendar-current-time-zone' returns a list containing nil for the data
it can't find."
- (unless calendar-current-time-zone-cache
- (setq calendar-current-time-zone-cache (calendar-dst-find-data))))
+ (or calendar-current-time-zone-cache
+ (setq calendar-current-time-zone-cache (calendar-dst-find-data))))
;; Following options should be set based on conditions when the code
(or (<= dst-starts date) (< date dst-ends))))))
;; used by calc, lunar, solar.
-(defun dst-adjust-time (date time &optional style)
+(defun dst-adjust-time (date time)
"Adjust, to account for dst on DATE, decimal fraction standard TIME.
Returns a list (date adj-time zone) where `date' and `adj-time' are the values
adjusted for `zone'; here `date' is a list (month day year), `adj-time' is a
decimal fraction time, and `zone' is a string.
-Optional parameter STYLE forces the result time to be standard time when its
-value is 'standard and daylight saving time (if available) when its value is
-'daylight.
-
Conversion to daylight saving time is done according to
`calendar-daylight-savings-starts', `calendar-daylight-savings-ends',
`calendar-daylight-savings-starts-time',
(provide 'cal-dst)
-;; arch-tag: a141d204-213c-4ca5-bdc6-f9df3aa92aad
;;; cal-dst.el ends here