Bug 68787 [Markers] Messages need to be converted to the new format
R3.0 The fix for the missing help in the tasks view introduced a missing NL string Non-externalized string literal; it should be followed by //$NON-NLS-<n>$ MarkerView.java org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal line 298
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/ActionMarkCompleted.java
}
            }, null);
        } catch (CoreException e) {
        }
    }
    /* (non-Javadoc)
     * @see org.eclipse.ui.actions.SelectionProviderAction#selectionChanged(org.eclipse.jface.viewers.IStructuredSelection)
     */
    public void selectionChanged(IStructuredSelection selection) {
        setEnabled(false);
        if (selection == null || selection.isEmpty()) {
            return;
        }
        for (Iterator iterator = selection.iterator(); iterator.hasNext();) {
            Object obj = iterator.next();
            if (!(obj instanceof IMarker)) {
                return;
            }
            IMarker marker = (IMarker) obj;
            if (!marker.getAttribute(IMarker.USER_EDITABLE, true)) {
                return;
            }
            if (marker.getAttribute(IMarker.DONE, false)) {
                return;
            }
        }
        setEnabled(true);
    }
}