question: private boolean normalizeAttrValue ( XMLAttributes attributes , int index ) { boolean leadingSpace = true ; boolean spaceStart = false ; boolean readingNonSpace = false ; int count = 0 ; int eaten = 0 ; String attrValue = attributes . getValue ( index ) ; char [ ] attValue = new char [ attrValue . length ( ) ] ; fBuffer . setLength ( 0 ) ; attrValue . getChars ( 0 , attrValue . length ( ) , attValue , 0 ) ; for ( int i = 0 ; i < attValue . length ; i ++ ) { if ( attValue [ i ] == ' ' ) { if ( readingNonSpace ) { spaceStart = true ; readingNonSpace = false ; } if ( spaceStart && ! leadingSpace ) { spaceStart = false ; fBuffer . append ( attValue [ i ] ) ; count ++ ; } else { if ( leadingSpace || ! spaceStart ) { eaten ++ ; } } } else { readingNonSpace = true ; spaceStart = false ; leadingSpace = false ; fBuffer . append ( attValue [ i ] ) ; count ++ ; } } if ( count > 0 && fBuffer . charAt ( count - 1 ) == ' ' ) { fBuffer . setLength ( count - 1 ) ; } String newValue = fBuffer . toString ( ) ; attributes . setValue ( index , newValue ) ; return ! attrValue . equals ( newValue ) ; }
target:  Normalize the attribute value of a non CDATA attributes collapsing sequences of space characters (x20)