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-rw-r--r--contrib/tzdata/etcetera17
1 files changed, 7 insertions, 10 deletions
diff --git a/contrib/tzdata/etcetera b/contrib/tzdata/etcetera
index a7e0eb4168ad..865a220c1f4b 100644
--- a/contrib/tzdata/etcetera
+++ b/contrib/tzdata/etcetera
@@ -16,26 +16,23 @@
# Do not use a POSIX TZ setting like TZ='GMT+4', which is four hours
# behind GMT but uses the completely misleading abbreviation "GMT".
-Zone Etc/GMT 0 - GMT
-
# The following zone is used by tzcode functions like gmtime,
# which load the "UTC" file to handle seconds properly.
Zone Etc/UTC 0 - UTC
+# Functions like gmtime load the "GMT" file to handle leap seconds properly.
+# Vanguard section, which works with most .zi parsers.
+#Zone GMT 0 - GMT
+# Rearguard section, for TZUpdater 2.3.2 and earlier.
+Zone Etc/GMT 0 - GMT
+
# The following link uses older naming conventions,
# but it belongs here, not in the file 'backward',
# as it is needed for tzcode releases through 2022a,
# where functions like gmtime load "GMT" instead of the "Etc/UTC".
# We want this to work even on installations that omit 'backward'.
Link Etc/GMT GMT
-
-Link Etc/UTC Etc/Universal
-Link Etc/UTC Etc/Zulu
-
-Link Etc/GMT Etc/Greenwich
-Link Etc/GMT Etc/GMT-0
-Link Etc/GMT Etc/GMT+0
-Link Etc/GMT Etc/GMT0
+# End of rearguard section.
# Be consistent with POSIX TZ settings in the Zone names,
# even though this is the opposite of what many people expect.