/src/main/java/org/htmlunit/html/xpath/XPathAdapter.java
if ( state == STATE.SINGLE_QUOTED || state == STATE.ATTRIB) {
if ( state == STATE.DEFAULT || state == STATE.ATTRIB ) {
} else if (state == STATE.DOUBLE_QUOTED) { state = STATE.DEFAULT; } break; case '\'': <extra_id_0> state = STATE.SINGLE_QUOTED; } else if (state == STATE.SINGLE_QUOTED) { state = STATE.DEFAULT; } break;