Handle the special case of splitting up an empty source string, which

should return an empty array rather than an array containing an empty 
string.



git-svn-id: https://samskivert.googlecode.com/svn/trunk@1778 6335cc39-0255-0410-8fd6-9bcaacd3b74c

src/java/com/samskivert/util/StringUtil.java

@@ -1186,6 +1186,11 @@ public class StringUtil
      */
     public static String[] split (String source, String sep)
     {
+        // handle the special case of a zero-component source
+        if (source.matches("\\s*")) {
+            return new String[0];
+        }
+        
         int tcount = 0, tpos = -1, tstart = 0;
 
         // count up the number of tokens