From: Paul Eggert <eggert@cs.ucla.edu>
Date: Mon, 19 Mar 2018 20:29:22 +0000 (-0700)
Subject: Tune time zone 0
X-Git-Tag: emacs-27.0.90~5457
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=7a7ee53dbdcf489050653f04ba3d0c491245c5fa;p=emacs.git

Tune time zone 0

* src/editfns.c (tzlookup): Treat time zone 0 like t, for speed.
Suggested by Valery Ushakov (Bug#30738#19).
---

diff --git a/src/editfns.c b/src/editfns.c
index d26319441b3..cb7353a48c6 100644
--- a/src/editfns.c
+++ b/src/editfns.c
@@ -147,7 +147,7 @@ tzlookup (Lisp_Object zone, bool settz)
 
   if (NILP (zone))
     return local_tz;
-  else if (EQ (zone, Qt))
+  else if (EQ (zone, Qt) || EQ (zone, make_number (0)))
     {
       zone_string = "UTC0";
       new_tz = utc_tz;