Update tzdata and zoneinfo to version 2022c.

tzdata/Makefile

@@ -298,8 +298,9 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \
 # guess TM_GMTOFF from other macros; define NO_TM_GMTOFF to suppress this.
 # Similarly, if your system has a "zone abbreviation" field, define
 #	-DTM_ZONE=tm_zone
-# and define NO_TM_ZONE to suppress any guessing.  These two fields are not
-# required by POSIX, but are widely available on GNU/Linux and BSD systems.
+# and define NO_TM_ZONE to suppress any guessing.  Although these two fields
+# not required by POSIX, a future version of POSIX is planned to require them
+# and they are widely available on GNU/Linux and BSD systems.
 #
 # The next batch of options control support for external variables
 # exported by tzcode.  In practice these variables are less useful
@@ -538,7 +539,7 @@ DATA=		$(TDATA_TO_CHECK) backzone iso3166.tab leap-seconds.list \
 			leapseconds $(ZONETABLES)
 AWK_SCRIPTS=	checklinks.awk checktab.awk leapseconds.awk \
 			ziguard.awk zishrink.awk
-MISC=		$(AWK_SCRIPTS) zoneinfo2tdf.pl
+MISC=		$(AWK_SCRIPTS)
 TZS_YEAR=	2050
 TZS_CUTOFF_FLAG=	-c $(TZS_YEAR)
 TZS=		to$(TZS_YEAR).tzs
@@ -567,7 +568,7 @@ VERSION_DEPS= \
 		tzfile.5 tzfile.h tzselect.8 tzselect.ksh \
 		workman.sh zdump.8 zdump.c zic.8 zic.c \
 		ziguard.awk zishrink.awk \
-		zone.tab zone1970.tab zoneinfo2tdf.pl
+		zone.tab zone1970.tab
 
 # And for the benefit of csh users on systems that assume the user
 # shell should be used to handle commands in Makefiles. . .

tzdata/NEWS

@@ -1,5 +1,29 @@
 News for the tz database
 
+Release 2022c - 2022-08-15 17:47:18 -0700
+
+  Briefly:
+    Work around awk bug in FreeBSD, macOS, etc.
+    Improve tzselect on intercontinental Zones.
+
+  Changes to code
+
+    Work around a bug in onetrueawk that broke commands like
+    'make traditional_tarballs' on FreeBSD, macOS, etc.
+    (Problem reported by Deborah Goldsmith.)
+
+    Add code to tzselect that uses experimental structured comments in
+    zone1970.tab to clarify whether Zones like Africa/Abidjan and
+    Europe/Istanbul cross continent or ocean boundaries.
+    (Inspired by a problem reported by Peter Krefting.)
+
+    Fix bug with 'zic -d /a/b/c' when /a is unwritable but the
+    directory /a/b already exists.
+
+    Remove zoneinfo2tdf.pl, as it was unused and triggered false
+    malware alarms on some email servers.
+
+
 Release 2022b - 2022-08-10 15:38:32 -0700
 
   Briefly:
@@ -83,7 +107,7 @@ Release 2022b - 2022-08-10 15:38:32 -0700
 
     zic no longer complains "can't determine time zone abbreviation to
     use just after until time" when a transition to a new standard
-    time occurs simultanously with the first DST fallback transition.
+    time occurs simultaneously with the first DST fallback transition.
 
   Changes to build procedure
 

tzdata/asia

@@ -1505,8 +1505,8 @@ Zone Asia/Jayapura	9:22:48 -	LMT	1932 Nov
 # onwards (which was during the Islamic Republic).
 
 # From Francis Santoni (2022-06-01):
-# for Iran and 1977 the effective change is only 20 october
-# (UIT No. 143 17.XI.1977) and not 23 september (UIT No. 141 13.IX.1977).
+# for Iran and 1977 the effective change is only 20 October
+# (UIT No. 143 17.XI.1977) and not 23 September (UIT No. 141 13.IX.1977).
 # UIT is the Operational Bulletin of International Telecommunication Union.
 
 # From Roozbeh Pournader (2003-03-15):

tzdata/theory.html

@@ -122,7 +122,7 @@ <h2 id="naming">Timezone identifiers</h2>
 locate the user on a timezone map or prioritize names that are
 geographically close. For an example selection interface, see the
 <code>tzselect</code> program in the <code><abbr>tz</abbr></code> code.
-The <a href="http://cldr.unicode.org">Unicode Common Locale Data
+The <a href="https://cldr.unicode.org">Unicode Common Locale Data
 Repository</a> contains data that may be useful for other selection
 interfaces; it maps timezone names like <code>Europe/Prague</code> to
 locale-dependent strings like "Prague", "Praha", "Прага", and "布拉格".
@@ -571,7 +571,7 @@ <h2 id="abbreviations">Time zone abbreviations</h2>
     locations while uninhabited.
     The leading '<code>-</code>' is a flag that the <abbr>UT</abbr> offset is in
     some sense undefined; this notation is derived
-    from <a href="https://tools.ietf.org/html/rfc3339">Internet
+    from <a href="https://datatracker.ietf.org/doc/html/rfc3339">Internet
     <abbr title="Request For Comments">RFC</abbr> 3339</a>.
   </li>
 </ul>
@@ -624,7 +624,7 @@ <h2 id="accuracy">Accuracy of the <code><abbr>tz</abbr></code> database</h2>
     should be observed.
     In her 2015 book
     <cite><a
-    href="http://www.hup.harvard.edu/catalog.php?isbn=9780674286146">The
+    href="https://www.hup.harvard.edu/catalog.php?isbn=9780674286146">The
     Global Transformation of Time, 1870&ndash;1950</a></cite>,
     Vanessa Ogle writes
     "Outside of Europe and North America there was no system of time
@@ -810,7 +810,7 @@ <h2 id="accuracy">Accuracy of the <code><abbr>tz</abbr></code> database</h2>
     See: Stephenson FR, Morrison LV, Hohenkerk CY.
     <a href="https://dx.doi.org/10.1098/rspa.2016.0404">Measurement of
     the Earth's rotation: 720 BC to AD 2015</a>.
-    <cite>Proc Royal Soc A</cite>. 2016 Dec 7;472:20160404.
+    <cite>Proc Royal Soc A</cite>. 2016;472:20160404.
     Also see: Espenak F. <a
     href="https://eclipse.gsfc.nasa.gov/SEhelp/uncertainty2004.html">Uncertainty
     in Delta T (ΔT)</a>.
@@ -1036,7 +1036,7 @@ <h3 id="POSIX-extensions">Extensions to POSIX in the
     and numeric data as described <a href="#POSIX">above</a>.
     The file's format is <dfn><abbr>TZif</abbr></dfn>,
     a timezone information format that contains binary data; see
-    <a href="https://tools.ietf.org/html/8536">Internet
+    <a href="https://datatracker.ietf.org/doc/html/8536">Internet
     <abbr>RFC</abbr> 8536</a>.
     The daylight saving time rules to be used for a
     particular timezone are encoded in the
@@ -1064,11 +1064,12 @@ <h3 id="POSIX-extensions">Extensions to POSIX in the
   </li>
   <li>
     The code supports platforms with a <abbr>UT</abbr> offset member
-    in <code>struct tm</code>, e.g., <code>tm_gmtoff</code>.
-  </li>
-  <li>
-    The code supports platforms with a time zone abbreviation member in
-    <code>struct tm</code>, e.g., <code>tm_zone</code>.
+    in <code>struct tm</code>, e.g., <code>tm_gmtoff</code>,
+    or with a time zone abbreviation member in
+    <code>struct tm</code>, e.g., <code>tm_zone</code>. As noted
+    in <a href="https://austingroupbugs.net/view.php?id=1533">Austin
+    Group defect 1533</a>, a future version of POSIX is planned to
+    require <code>tm_gmtoff</code> and <code>tm_zone</code>.
   </li>
   <li>
     Functions <code>tzalloc</code>, <code>tzfree</code>,
@@ -1129,7 +1130,8 @@ <h3 id="vestigial">POSIX features no longer needed</h3>
     <abbr>API</abbr>s.
     Although it can still be used in arguments to
     <code>mktime</code> to disambiguate timestamps near
-    a <abbr>DST</abbr> transition when the clock jumps back, this
+    a <abbr>DST</abbr> transition when the clock jumps back on
+    platforms lacking <code>tm_gmtoff</code>, this
     disambiguation does not work when standard time itself jumps back,
     which can occur when a location changes to a time zone with a
     lesser <abbr>UT</abbr> offset.
@@ -1277,7 +1279,7 @@ <h2 id="leapsec">Leap seconds</h2>
 <a href="tz-link.html#precision">Precision timekeeping</a>,
 and this package by default installs a <samp>leapseconds</samp> file
 commonly used by
-<a href="http://www.ntp.org"><abbr title="Network Time Protocol">NTP</abbr></a>
+<a href="https://www.ntp.org"><abbr title="Network Time Protocol">NTP</abbr></a>
 software that adjusts the kernel clock.
 However, kernel-clock twiddling approximates UTC only roughly,
 and systems needing more-precise UTC can use this package's leap

tzdata/version

@@ -1 +1 @@
-2022b
+2022c

tzdata/ziguard.awk

@@ -91,12 +91,13 @@ $1 == "#PACKRATLIST" && $2 == PACKRATLIST {
 /^Zone/ { zone = $2 }
 
 DATAFORM != "main" {
-  in_comment = /^#/
+  in_comment = $0 ~ /^#/
   uncomment = comment_out = 0
 
   # If this line should differ due to Czechoslovakia using negative SAVE values,
   # uncomment the desired version and comment out the undesired one.
-  if (zone == "Europe/Prague" && /^#?[\t ]+[01]:00[\t ]/ && /1947 Feb 23/) {
+  if (zone == "Europe/Prague" && $0 ~ /^#?[\t ]+[01]:00[\t ]/ \
+      && $0 ~ /1947 Feb 23/) {
     if (($(in_comment + 2) != "-") == (DATAFORM != "rearguard")) {
       uncomment = in_comment
     } else {
@@ -106,9 +107,9 @@ DATAFORM != "main" {
 
   # If this line should differ due to Ireland using negative SAVE values,
   # uncomment the desired version and comment out the undesired one.
-  Rule_Eire = /^#?Rule[\t ]+Eire[\t ]/
+  Rule_Eire = $0 ~ /^#?Rule[\t ]+Eire[\t ]/
   Zone_Dublin_post_1968 \
-    = (zone == "Europe/Dublin" && /^#?[\t ]+[01]:00[\t ]/ \
+    = (zone == "Europe/Dublin" && $0 ~ /^#?[\t ]+[01]:00[\t ]/ \
        && (!$(in_comment + 4) || 1968 < $(in_comment + 4)))
   if (Rule_Eire || Zone_Dublin_post_1968) {
     if ((Rule_Eire \
@@ -122,9 +123,9 @@ DATAFORM != "main" {
 
   # If this line should differ due to Namibia using negative SAVE values,
   # uncomment the desired version and comment out the undesired one.
-  Rule_Namibia = /^#?Rule[\t ]+Namibia[\t ]/
+  Rule_Namibia = $0 ~ /^#?Rule[\t ]+Namibia[\t ]/
   Zone_using_Namibia_rule \
-    = (zone == "Africa/Windhoek" && /^#?[\t ]+[12]:00[\t ]/ \
+    = (zone == "Africa/Windhoek" && $0 ~ /^#?[\t ]+[12]:00[\t ]/ \
        && ($(in_comment + 2) == "Namibia" \
 	   || ($(in_comment + 2) == "-" && $(in_comment + 3) == "CAT" \
 	       && ((1994 <= $(in_comment + 4) && $(in_comment + 4) <= 2017) \
@@ -142,8 +143,8 @@ DATAFORM != "main" {
 
   # If this line should differ due to Portugal benefiting from %z if supported,
   # uncomment the desired version and comment out the undesired one.
-  if (/^#?[\t ]+-[12]:00[\t ]+Port[\t ]+[%+-]/) {
-    if (/%z/ == (DATAFORM == "vanguard")) {
+  if ($0 ~ /^#?[\t ]+-[12]:00[\t ]+Port[\t ]+[%+-]/) {
+    if (($0 ~ /%z/) == (DATAFORM == "vanguard")) {
       uncomment = in_comment
     } else {
       comment_out = !in_comment
@@ -164,8 +165,8 @@ DATAFORM != "main" {
     sub(/-00CHANGE-TO-%z/, "-00")
     sub(/[-+][^\t ]+CHANGE-TO-/, "")
   } else {
-    if (/^[^#]*%z/) {
-      stdoff_column = 2 * /^Zone/ + 1
+    if ($0 ~ /^[^#]*%z/) {
+      stdoff_column = 2 * ($0 ~ /^Zone/) + 1
       rules_column = stdoff_column + 1
       stdoff = get_minutes($stdoff_column)
       rules = $rules_column
@@ -184,9 +185,9 @@ DATAFORM != "main" {
 	    dstoff = 20
 	  } else if (((rules == "Cook" || rules == "LH") && NF == 3) \
 		     || (rules == "Uruguay" \
-			 && /[\t ](1942 Dec 14|1960|1970|1974 Dec 22)$/)) {
+			 && $0 ~ /[\t ](1942 Dec 14|1960|1970|1974 Dec 22)$/)) {
 	    dstoff = 30
-	  } else if (rules == "Uruguay" && /[\t ]1974 Mar 10$/) {
+	  } else if (rules == "Uruguay" && $0 ~ /[\t ]1974 Mar 10$/) {
 	    dstoff = 90
 	  } else {
 	    dstoff = 60
@@ -222,7 +223,7 @@ DATAFORM != "main" {
       stdoff_subst[1] = rounded_stdoff
     }
   } else if (stdoff_subst[0]) {
-    stdoff_column = 2 * /^Zone/ + 1
+    stdoff_column = 2 * ($0 ~ /^Zone/) + 1
     stdoff_column_val = $stdoff_column
     if (stdoff_column_val == stdoff_subst[0]) {
       sub(stdoff_subst[0], stdoff_subst[1])
@@ -233,7 +234,7 @@ DATAFORM != "main" {
 
   # In rearguard form, change the Japan rule line with "Sat>=8 25:00"
   # to "Sun>=9 1:00", to cater to zic before 2007 and to older Java.
-  if (/^Rule/ && $2 == "Japan") {
+  if ($0 ~ /^Rule/ && $2 == "Japan") {
     if (DATAFORM == "rearguard") {
       if ($7 == "Sat>=8" && $8 == "25:00") {
 	sub(/Sat>=8/, "Sun>=9")
@@ -250,7 +251,7 @@ DATAFORM != "main" {
   # In rearguard form, change the Morocco lines with negative SAVE values
   # to use positive SAVE values.
   if ($2 == "Morocco") {
-    if (/^Rule/) {
+    if ($0 ~ /^Rule/) {
       if ($4 ~ /^201[78]$/ && $6 == "Oct") {
 	if (DATAFORM == "rearguard") {
 	  sub(/\t2018\t/, "\t2017\t")
@@ -290,8 +291,10 @@ DATAFORM != "main" {
 /^Zone/ {
   packrat_ignored = FILENAME == PACKRATDATA && PACKRATLIST && !packratlist[$2];
 }
-packrat_ignored && !/^Rule/ {
-  sub(/^/, "#")
+{
+  if (packrat_ignored && $0 !~ /^Rule/) {
+    sub(/^/, "#")
+  }
 }
 
 # If a Link line is followed by a Link or Zone line for the same data, comment

tzdata/zone1970.tab

@@ -351,3 +351,27 @@ VN	+1045+10640	Asia/Ho_Chi_Minh	Vietnam (south)
 VU	-1740+16825	Pacific/Efate
 WS	-1350-17144	Pacific/Apia
 ZA,LS,SZ	-2615+02800	Africa/Johannesburg
+#
+# The next section contains experimental tab-separated comments for
+# use by user agents like tzselect that identify continents and oceans.
+#
+# For example, the comment "#@AQ<tab>Antarctica/" means the country code
+# AQ is in the continent Antarctica regardless of the Zone name,
+# so Pacific/Auckland should be listed under Antarctica as well as
+# under the Pacific because its line's country codes include AQ.
+#
+# If more than one country code is affected each is listed separated
+# by commas, e.g., #@IS,SH<tab>Atlantic/".  If a country code is in
+# more than one continent or ocean, each is listed separated by
+# commas, e.g., the second column of "#@CY,TR<tab>Asia/,Europe/".
+#
+# These experimental comments are present only for country codes where
+# the continent or ocean is not already obvious from the Zone name.
+# For example, there is no such comment for RU since it already
+# corresponds to Zone names starting with both "Europe/" and "Asia/".
+#
+#@AQ	Antarctica/
+#@IS,SH	Atlantic/
+#@CY,TR	Asia/,Europe/
+#@SJ	Arctic/
+#@CC,CX,KM,MG,YT	Indian/