unable to parse document when the last character is '}'

org.apache.maven.doxia.parser.ParseException: String index out of range: 14
        at org.apache.maven.doxia.module.confluence.ConfluenceParser.parse(ConfluenceParser.java:139)
....
Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: 14
        at java.lang.String.charAt(String.java:558)
        at org.apache.maven.doxia.module.confluence.parser.ParagraphBlockParser.visit(ParagraphBlockParser.java:134)
        at org.apache.maven.doxia.module.confluence.ConfluenceParser.parse(ConfluenceParser.java:103)
        at org.apache.maven.doxia.module.confluence.ConfluenceParser.parse(ConfluenceParser.java:131)

package org.apache.doxia.test.BUGTestCase;

import java.io.StringReader;

/**
 * Unit test for simple App.
 */
public class AppTest 
extends TestCase
{
	/**
	 * Create the test case
	 *
	 * @param testName name of the test case
	 */
	public AppTest( String testName )
	{
		super( testName );
	}

	/**
	 * @return the suite of tests being tested
	 */
	public static Test suite()
	{
		return new TestSuite( AppTest.class );
	}

	/**
	 * Rigourous Test :-)
	 * @throws ParseException 
	 */
	public void testEndBracket() throws ParseException
	{
		String document = "Test" +
		"\n\n* list1"+
		"\n\n* list2"+
		"\n\n* list2"+
		"\n{pre}123{/pre}";    			
		StringWriter writer = new StringWriter();
		ConfluenceParser parser = new ConfluenceParser();
		XhtmlSink sink = new XhtmlSink(writer);
		/* parsing with additional space at end works*/
		parser.parse(new StringReader(document+" "), sink);
		assertTrue("generated document should have a size >0",writer.toString().length()>0);
		/* parsing with document ending in } fails*/
		try{
			parser.parse(new StringReader(document), sink);
		} catch (Exception e){
			e.printStackTrace();
			fail("parsing with document ending in } should not fails");
		}
		assertTrue("generated document should have a size >0",writer.toString().length()>0);
	}
	/**
	 * Rigourous Test :-)
	 * @throws ParseException 
	 */
	public void testEndBracketInList() throws ParseException
	{
		String document1 = "Test" +
		"\n\n* list1"+
		"\n\n* list2"+
		"\n\n* list2{pre}123{/pre} "+
		"\n123";
		String document2 = "Test" +
		"\n\n* list1"+
		"\n\n* list2"+
		"\n\n* list2{pre}123{/pre}"+
		"\n123";    			
		StringWriter writer = new StringWriter();
		ConfluenceParser parser = new ConfluenceParser();
		XhtmlSink sink = new XhtmlSink(writer);
		/* parsing with additional space at end of list item works*/
		parser.parse(new StringReader(document1), sink);
		assertTrue("generated document should have a size >0",writer.toString().length()>0);
		/* parsing with end of list item ending in } fails*/
		try{
			parser.parse(new StringReader(document2), sink);
		} catch (Exception e){
			e.printStackTrace();
			fail("parsing with end of list item ending in } should not fails");
		}
		assertTrue("generated document should have a size >0",writer.toString().length()>0);
	}
}