EXPAND_USERNAME
for(p1 = e1->parent; p1 && p1->type != EXPAND_USERNAME; p1 = p1->parent)
for(p2 = e2->parent; p2 && p2->type != EXPAND_USERNAME; p2 = p2->parent)
case EXPAND_USERNAME:
if (node->type == EXPAND_USERNAME &&
expand->parent->type == EXPAND_USERNAME &&
node.type = EXPAND_USERNAME;
case EXPAND_USERNAME:
if (xn->type != EXPAND_USERNAME &&
if (xn->type == EXPAND_USERNAME) {
case EXPAND_USERNAME:
alias->type = EXPAND_USERNAME;