XPATH_OP_UNION   1158 third_party/libxml/src/xpath.c         case XPATH_OP_UNION:
XPATH_OP_UNION   10642 third_party/libxml/src/xpath.c 	PUSH_BINARY_EXPR(XPATH_OP_UNION, op1, ctxt->comp->last, 0, 0);
XPATH_OP_UNION   12584 third_party/libxml/src/xpath.c         case XPATH_OP_UNION:
XPATH_OP_UNION   12712 third_party/libxml/src/xpath.c         case XPATH_OP_UNION:
XPATH_OP_UNION   13266 third_party/libxml/src/xpath.c         case XPATH_OP_UNION: