XPages: Code snippet for Multi Value Custom Converter

I got a question regarding how to work around the buggy multi-value implementation in XPages. I use a custom converter for my multi value fields.

var Converters = {  
  multivalue: {
    // separator: String or RegExp
    getAsObject: function( valuesString, separator ){
      try {
        separator = separator || ',';
        var values = valuesString.split( separator );
        
        // Trims empty values
        var trimmedValue, trimmedValues = [];
        for( var i = 0; i < values.length; i++ ){
          trimmedValue = values[i];
          // Removes leading and trailing white-space
          if( trimmedValue ){ 
            trimmedValues.push( trimmedValue.replace( /^\s+|\s+$/g, '' ) ); 
          }  
        }        
        return trimmedValues;
      } catch( e ){ /* Exception handling */ }
    },
    getAsString: function( values, separator ){
      try {
        if( values.constructor !== Array ){ values = [ values ]; }
        separator = separator || '\n';
        
        return values.join( separator );
      } catch( e ){ /* Exception handling */ }
    }
  }
}

Put the above code snippet inside a script library. Add a custom converter to the multi value field.

In getAsObject -> Converters.multivalue.getAsObject( value, separator );
In getAsString -> Converters.multivalue.getAsString( value, separator );

getAsObject is the conversion of the submitted value to the stored value.
getAsString is the conversion of the stored value to a displayable string value.

Examples:

// Split on comma, semi colon and any white space 
Converters.multivalue.getAsObject( value, /,|;|\s/ );

// Show values comma separated
Converters.multivalue.getAsObject( value, "," );

value is a global variable that's available in the conversion. For getAsObject it's the submitted string. For getAsString, it's the stored value.