Bug 184597 [Contributions] ActionContributionItem should show accelerator text even if accelerator cannot be parsed
bundles/org.eclipse.jface/src/org/eclipse/jface/action/ActionContributionItem.java
String text = action.getText();
					if (text == null) {
						text = ""; 
					} else {
						text = Action.removeAcceleratorText(text);
					}
					button.setText(text);
				}
				if (tooltipTextChanged) {
					button.setToolTipText(action.getToolTipText());
				}
				if (enableStateChanged) {
					boolean shouldBeEnabled = action.isEnabled()
							&& isEnabledAllowed();
					if (button.getEnabled() != shouldBeEnabled) {
						button.setEnabled(shouldBeEnabled);
					}
				}
				if (checkChanged) {
					boolean bv = action.isChecked();
					if (button.getSelection() != bv) {
						button.setSelection(bv);
					}
				}
				return;
			}
		}
	}
	/**
	 * Updates the images for this action.