(defun parse-timestring (timestring &key (start 0) end junk-allowed)
"parse a timestring and return the corresponding wall-time. If the
timestring starts with P, read a duration; otherwise read an ISO 8601
formatted date string."
(defun parse-timestring (timestring &key (start 0) end junk-allowed)
"parse a timestring and return the corresponding wall-time. If the
timestring starts with P, read a duration; otherwise read an ISO 8601
formatted date string."