Bug 294790 [KeyBindings] LegacyActionTools should support SWT.F13 - F20
bundles/org.eclipse.jface/src/org/eclipse/jface/action/LegacyActionTools.java
if (keyCode != -1) {
			accelerator |= keyCode;
		}
		return accelerator;
	}
	/**
	 * Extracts the accelerator text from the given text. Returns
	 * <code>null</code> if there is no accelerator text, and the empty string
	 * if there is no text after the accelerator delimeter (tab or '@').
	 * 
	 * @param text
	 *            the text for the action; may be <code>null</code>.
	 * @return the accelerator text, or <code>null</code>
	 */
	public static final String extractAcceleratorText(final String text) {
		if (text == null) {
			return null;
		}
		int index = text.lastIndexOf('\t');
		if (index == -1) {
			index = text.lastIndexOf('@');
		}
		if (index >= 0) {
			return text.substring(index + 1);
		}
		return null;
	}
	/**
	 * Extracts the mnemonic text from the given string.
	 *