// In this case, we do not have to push a frame in the stack, because we remove the
// MACRO immediately, substituting it with the content of the phantom group.
// We could remove the last child of the phantom group, but
// In this case, we do not have to push a frame in the stack, because we remove the
// MACRO immediately, substituting it with the content of the phantom group.
// We could remove the last child of the phantom group, but