>>-space-+---------------+-------------------------------------><
         +-(n-+------+-)-+
              +-,pad-+

Returns the target mutablebuffer, with n pad characters between each whitespace-delimited word. If you specify n, it must be a positive whole number or zero. If it is 0, all whitespace characters are removed. Leading and trailing whitespace characters are always removed. The default for n is 1, and the default pad character is a blank.