Handles empty string now as well.

Submitted by:	Mark Ford


git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/lang/trunk@137371 13f79535-47bb-0310-9956-ffa450edef68

Author: Henri Yandell

src/java/org/apache/commons/lang/StringUtils.java

@@ -77,7 +77,7 @@
  * @author Arun Mammen Thomas
  * @author <a href="mailto:ggregory@seagullsw.com">Gary Gregory</a>
  * @since 1.0
- * @version $Id: StringUtils.java,v 1.47 2003/06/21 22:24:55 bayard Exp $
+ * @version $Id: StringUtils.java,v 1.48 2003/06/23 03:51:13 bayard Exp $
  */
 public class StringUtils {
 
@@ -1048,7 +1048,7 @@ public static String chop(String str) {
      */
     public static String chopNewline(String str) {
         int lastIdx = str.length() - 1;
-        if (lastIdx == 0) {
+        if (lastIdx <= 0) {
             return "";
         }
         char last = str.charAt(lastIdx);

src/test/org/apache/commons/lang/StringUtilsTest.java

@@ -69,7 +69,7 @@
  * @author <a href="mailto:fredrik@westermarck.com>Fredrik Westermarck</a>
  * @author Holger Krauth
  * @author <a href="hps@intermeta.de">Henning P. Schmiedehausen</a>
- * @version $Id: StringUtilsTest.java,v 1.20 2003/06/21 22:24:56 bayard Exp $
+ * @version $Id: StringUtilsTest.java,v 1.21 2003/06/23 03:51:13 bayard Exp $
  */
 public class StringUtilsTest extends TestCase {
 
@@ -343,6 +343,7 @@ public void testChopNewLine() {
             { FOO + "\n" + FOO , FOO + "\n" + FOO },
             { FOO + "\n\n", FOO + "\n"},
             { "\n", "" },
+            { "", "" },
             { "\r\n", "" }
       };