The 'flatc' function determines the character length that would be printed if the 'expr' were printed using princ. This means that the 'expr' would be printed without a new-line. If 'expr' is a string, it would not be printed with quotes around the string. The print character length is returned as the result.
(flatc 1234) ; returns 4 (flatc '(a b c)) ; returns 7 (flatc "abcd") ; returns 4 (flatc 'mybigsymbol) ; returns 11
See the
flatc
function in the