Add an ISO 8601 parsing library

* doc/lispref/os.texi (Time Parsing): Document it.

* lisp/calendar/iso8601.el: New file.

* test/lisp/calendar/iso8601-tests.el: Test ISO8601 parsing functions.

1 files changed, 9 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 2bdbfcb8d08..7c21cc79307 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -2056,6 +2056,15 @@ TICKS is an integer and HZ is a positive integer denoting a clock
 frequency.  The old 'encode-time' API is still supported.
 
 +++
+*** A new package to parse ISO 8601 time, date, durations and
+intervals has been added.  The main function to use is
+'iso8601-parse', but there's also 'iso8601-parse-date',
+'iso8601-parse-time', 'iso8601-parse-duration' and
+'iso8601-parse-interval'.  All these functions return decoded time
+structures, except the final one, which returns three of them (start,
+end and duration).
+
++++
 *** 'time-add', 'time-subtract', and 'time-less-p' now accept
 infinities and NaNs too, and propagate them or return nil like
 floating-point operators do.