GitLab

of a cons.

for daylight saving rules in Iran.
(require 'cal-persia) now needed.

transposed DST-STARTS-TIME and DST-ENDS-TIME.

(calendar-daylight-savings-ends): Add risky-local-variable property.

Fix comments instead, since they didn't match the code.

Israel has changed its daylight savings time rules, and we don't know
what the current rules are.

next few years until at most one rule remains; if none remain, then
just use the first candidate rule; it's wrong in general, but it's
right for at least one year.  This is a better heuristic in case the
underlying time zone implementation has bugs (which is all too
common).  If possible, don't convert back and forth between gregorian
and absolute; this speeds things up noticeably.  This uses the new
calendar-nth-named-absday function.

(calendar-current-time-zone): Some locales start DST at a different
time of day than they end; allow for this by yielding both times.  The
performance speedups in calendar.el are great enough that we now no
longer need the "Checking time zone data..." message.  If
current-time-zone yields nil, don't bother with
calendar-next-time-zone-transition.  Use clearer names for local vars.

(calendar-time-zone, calendar-daylight-time-offset,
calendar-{standard,daylight}-time-zone-name,
calendar-daylight-savings-{starts,ends}): Default to US Eastern rules
for information that is not available.

(calendar-daylight-savings-{starts,ends}-time): New vars, replacing
calendar-daylight-savings-switchover-time, to support locales that
start DST at a different time of day than they end.

(calendar-absolute-from-time):
Fix typo by interchanging floor and mod.

of mod.  Use (floor (/ A B)) in place of (floor A B).

now subsume them.  All callers changed.

        (calendar-/, calendar-%, calendar-absolute-from-time,
        calendar-time-from-absolute, calendar-next-time-zone-transition,
        calendar-time-zone-daylight-rules): New functions.
        (calendar-current-time-zone): Moved from calendar.el and rewritten.
        (calendar-current-time-zone-cache): New variable.
        (calendar-current-time-zone, calendar-time-zone,
        calendar-daylight-time-offset, calendar-standard-time-zone-name,
        calendar-daylight-time-zone-name,
        calendar-daylight-savings-starts, calendar-daylight-savings-ends,
        calendar-daylight-savings-switchover-time): Moved from calendar.el.