Extensions/Common/lib/vsts-task-lib/task.js
function getDelimitedInput(name, delim, required) {
    var inval = getInput(name, required);
    if (!inval) {
        return [];
    }
    return inval.split(delim);
}
function getDelimitedInput(name, delim, required) {
    var inval = getInput(name, required);
    if (!inval) {
        return [];
    }
    return inval.split(delim);
}
function getDelimitedInput ( name , delim , required ) { var inval = getInput ( name , required ) ; if ( ! inval ) { return [ ] ; } return inval . split ( delim ) ; }
Split - do not use for splitting args!  Instead use arg() - it will split and handle this is for splitting a simple list of items like targets
Split - do not use for splitting args! Instead use arg () - it will split and handle this is for splitting a simple list of items like targets