From 37e11a631937986f03f6216655ea1c964f7286aa Mon Sep 17 00:00:00 2001 From: Chong Yidong Date: Mon, 8 Aug 2011 11:53:35 -0400 Subject: Lisp code shouldn't use set-time-zone-rule except through setenv. * time.el (display-time-world-list, display-time-world-display): * time-stamp.el (time-stamp-string): * vc/add-log.el (add-change-log-entry): Use setenv instead of set-time-zone-rule. * src/editfns.c (Fset_time_zone_rule): Document relationship with the setenv function. Fixes: debbugs:7337 --- src/editfns.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'src/editfns.c') diff --git a/src/editfns.c b/src/editfns.c index 5eed386afb..297f7b6d7e 100644 --- a/src/editfns.c +++ b/src/editfns.c @@ -2053,7 +2053,12 @@ static char *initial_tz; DEFUN ("set-time-zone-rule", Fset_time_zone_rule, Sset_time_zone_rule, 1, 1, 0, doc: /* Set the local time zone using TZ, a string specifying a time zone rule. If TZ is nil, use implementation-defined default time zone information. -If TZ is t, use Universal Time. */) +If TZ is t, use Universal Time. + +Instead of calling this function, you typically want (setenv "TZ" TZ). +That changes both the environment of the Emacs process and the +variable `process-environment', whereas `set-time-zone-rule' affects +only the former. */) (Lisp_Object tz) { const char *tzstring; -- cgit v1.2.3