Bug 11238 1.4 settings should not include 'assert as identifier'
Build 20020312 In 1.4 source mode, 'assert' is a keyword, and therefore it cannot be reported to be used as an identifier.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/CompilerPreferencePage.java
private void controlChanged(Widget widget) {
		ControlData data= (ControlData) widget.getData();
		String newValue= null;
		if (widget instanceof Button) {
			newValue= data.getValue(((Button)widget).getSelection());			
		} else if (widget instanceof Combo) {
			newValue= data.getValue(((Combo)widget).getSelectionIndex());
		} else {
			return;
		}
		fWorkingValues.put(data.getKey(), newValue);
		
		validateSettings(data.getKey(), newValue);
	}
	private boolean checkValue(String key, String value) {
		return value.equals(fWorkingValues.get(key));
	}
	/*
	 * Update fields and validate.
	 * @param changedKey Key that changed, or null, if all changed.
	 */	
	private void validateSettings(String changedKey, String newValue) {
		if (changedKey != null) {
			if (INTR_DEFAULT_COMPLIANCE.equals(changedKey)) {
				updateComplianceEnableState();
				if (DEFAULT.equals(newValue)) {
					updateComplianceDefaultSettings();
				}
			} else if (PREF_COMPLIANCE.equals(changedKey)) {
				if (checkValue(INTR_DEFAULT_COMPLIANCE, DEFAULT)) {