../field_separator fs='.' test='129. 11. 32.  5'
field 0: "129"
field 1: " 11"
field 2: " 32"
field 3: "  5"
field 4: "empty"
../field_separator fs='. ' test='129. 11. 32.  5'
field 0: "129"
field 1: "11"
field 2: "32"
field 3: "5"
field 4: "empty"
