Returns a string with the formatted version of the date, which should be in the form yyyymmdd. If the string is not in this format, it returns a string indicating this (if only there were a (warning) primitive. I'd like to use (error) at the end, rather than silently returning just d, but I cannot work out how to evaluate more than one expression one after another!
Replaced by (format-date), which parses dates in the form
dd-MMM-yyyy.
The string should be in the form yyyymmdd
Type: string
Formatted into english