Function uci_add_list 

pub unsafe extern "C" fn uci_add_list(
    ctx: *mut uci_context,
    ptr: *mut uci_ptr,
) -> c_int

uci_add_list: Append a string to an element list @ctx: uci context @ptr: uci pointer (with value)

Note: if the given option already contains a string value, it will be converted to an 1-element-list before appending the next element