Bug 36439 IndexOutOfBoundsException in HTML2TextReader
R2.1 1. Open java.regex.Pattern 2. Hover over "Pattern" ==> IndexOutOfBoundsException
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/HTML2TextReader.java
}
			fStartOffset= -1;
		}
	}
	
	/*
	 * @see org.eclipse.jdt.internal.ui.text.SubstitutionTextReader#computeSubstitution(int)
	 */
	protected String computeSubstitution(int c) throws IOException {
		
		if (c == '<')
			return  processHTMLTag();
		else if (c == '&')
			return processEntity();
		else if (fIsPreformattedText)
			return processPreformattedText(c);
		
		return null;
	}
	private String html2Text(String html) {
		
		String tag= html;
		if ('/' == tag.charAt(0))
			tag= tag.substring(1);
			
		if (!fgTags.contains(tag))
			return EMPTY_STRING;
		if ("pre".equals(html)) { 
			startPreformattedText();
			return EMPTY_STRING;