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 d26319441b33c89db98f26c5a2e76210e100c9bb..cb7353a48c6aeeae81de1473226dcfe40ba946c9 100644 (file)
--- 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;