Version 2.2.23...

src/macros.py

Index: src/macros.py
===================================================================
--- src/macros.py	(revision 5030)
+++ src/macros.py	(working copy)
@@ -146,11 +146,15 @@
 macro DAY(time) = ($floor(time / 86400000));
 macro MONTH_FROM_TIME(time) = (MonthFromTime(time));
 macro DATE_FROM_TIME(time) = (DateFromTime(time));
+macro NAN_OR_DATE_FROM_TIME(time) = (NUMBER_IS_NAN(time) ? time : DATE_FROM_TIME(time));
 macro YEAR_FROM_TIME(time) = (YearFromTime(time));
 macro HOUR_FROM_TIME(time) = (Modulo($floor(time / 3600000), 24));
 macro MIN_FROM_TIME(time) = (Modulo($floor(time / 60000), 60));
+macro NAN_OR_MIN_FROM_TIME(time) = (NUMBER_IS_NAN(time) ? time : MIN_FROM_TIME(time));
 macro SEC_FROM_TIME(time) = (Modulo($floor(time / 1000), 60));
+macro NAN_OR_SEC_FROM_TIME(time) = (NUMBER_IS_NAN(time) ? time : SEC_FROM_TIME(time));
 macro MS_FROM_TIME(time) = (Modulo(time, 1000));
+macro NAN_OR_MS_FROM_TIME(time) = (NUMBER_IS_NAN(time) ? time : MS_FROM_TIME(time));
 
 # Last input and last subject of regexp matches.
 macro LAST_SUBJECT(array) = ((array)[1]);