Bug 26641 No option to disable "Assignment ... has no effect"
2.1 M3 I am missing an option to disable the compiler warning upon assigning a variable to itself...
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/CompilerConfigurationBlock.java
textBox.setText(currValue);
		textBox.addModifyListener(fTextModifyListener);
		textBox.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
		fTextBoxes.add(textBox);
		return textBox;
	}	
	
	
	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 void textChanged(Text textControl) {
		String key= (String) textControl.getData();
		String number= textControl.getText();
		fWorkingValues.put(key, number);
		validateSettings(key, number);
	}	
	private boolean checkValue(String key, String value) {