Bug 66923 [typing]Can delete word (Ctrl-Backspace) on read only file
When you open read-only java file, all editing functions are disabled except deleting with Ctrl-Backspace and Ctrl-Del, then it is imposible to save this file. On simple text file it works ok - it blocks all edditing functions (including Ctrl-Backspace). I am using build 200406111814
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitEditor.java
}
	
	private static char getPeerCharacter(char character) {
		switch (character) {
			case '(':
				return ')';
				
			case ')':
				return '(';
				
			case '[':
				return ']';
			case ']':
				return '[';
				
			case '"':
				return character;
				
			case '\'':
				return character;
			
			default:
				throw new IllegalArgumentException();
		}					
	}
	
	/*
	 * @see AbstractTextEditor#handlePreferenceStoreChanged(PropertyChangeEvent)
	 */
	protected void handlePreferenceStoreChanged(PropertyChangeEvent event) {