+2023-05-07 Paul Eggert <eggert@cs.ucla.edu>
+
+ Warn against bogus TZ settings
+ * doc/parse-datetime.texi (Specifying time zone rules):
+ Warn against TZ="UTC=5".
+
2023-05-05 Bruno Haible <bruno@clisp.org>
dirfd: Add tests.
and the time zone is 7 hours west of Greenwich, and
@samp{TZ="<+0530>-5:30"} says that the time zone abbreviation is @samp{+0530}
and the time zone is 5 hours 30 minutes east of Greenwich.
+(One should never use a setting like @samp{TZ="UTC-5"}, since
+this would incorrectly imply that local time is five hours east of
+Greenwich and the time zone is called ``UTC''.)
Although trickier POSIX @env{TZ} settings like
@samp{TZ="<-05>+5<-04>,M3.2.0/2,M11.1.0/2"} can specify some daylight
saving regimes, location-based settings like