len
does not count trailing spaces in a string (len('bar ')
) returns 3 rather than 6!). A much better way to determine the length of a string seems to be datalengh()
. print(len ('foo' )); -- 3 print(datalength('foo' )); -- 3 print(len ('bar ')); -- 3 (!) print(datalength('bar ')); -- 6 print(len (' baz')); -- 6 print(datalength(' baz')); -- 6