[cl-ppcre-devel] omitting initial void string in split returns

I want to parse strings of space-separated integers, and split is perfect except when I have vertical aligned integers. In such cases I've got one or more spaces at beginning of string, and the resulting list has a void string as 1st element: CL-USER> (cl-ppcre:split "\\s+" " 43 76 87 33 89 ") ("" "43" "76" "87" "33" "89") Is there an option to avoid such initial void string? Thanks. Mario