* doc/lispref/os.texi (Time Parsing):
* etc/NEWS: Document new %q functionality taken from gnulib.
microseconds, etc. Any excess digits are discarded, without rounding.
@item %p
This stands for @samp{AM} or @samp{PM}, as appropriate.
+@item %q
+This stands for the calendar quarter (1--4).
@item %r
This is a synonym for @samp{%I:%M:%S %p}.
@item %R
'current-time-string', 'current-time-zone', 'decode-time',
'format-time-string', and 'set-time-zone-rule'.
++++
+** 'format-time-string' now formats "%q" to the calendar quarter.
+
** New built-in function 'mapcan' which avoids unnecessary consing (and garbage
collection).