Split multi-line (comma-separated) cell into new rows + duplicate surrounding row entries

Question

Based on: Google sheets split multi-line cell into new rows (+ duplicate surrounding row entries)

How can I rewrite this for use of a comma as separator and remove blank spaces?

Input sheet:

Row 1: Albert A. Anderson, Beatrice B. Bargel ->  

The desired output on a new sheet:

Row 1: Albert A. Anderson  (plus surrounding cells)  
Row 2: Beatrice B. Bargel  (plus surrounding cells)  

Example spreadsheet

Answer 1

SCRIPT :

function transform(range) {
  var output2 = [];
  for(var i=0, iLen=range.length; i<iLen; i++) {
    var s = range[i][1].split(", ");    
    for(var j=0, jLen=s.length; j<jLen; j++) {
      var output1 = []; 
      for(var k=0, kLen=range[0].length; k<kLen; k++) {
        if(k == 1) {
          output1.push(s[j]);
        } else {
          output1.push(range[i][k]);
        }
      }
      output2.push(output1);
    }    
  }
  return output2;
}

FORMULA :

=TRANSFORM(A1:E4)

RESULT :