476     auto *LinksFrom = &linksAt(Idx2);  in mergeDirect()  local
479     while (LinksInto->hasAbove() && LinksFrom->hasAbove()) {  in mergeDirect()
481       LinksFrom = &linksAt(LinksFrom->getAbove());  in mergeDirect()
484     if (LinksFrom->hasAbove()) {  in mergeDirect()
485       LinksInto->setAbove(LinksFrom->getAbove());  in mergeDirect()
496     while (LinksInto->hasBelow() && LinksFrom->hasBelow()) {  in mergeDirect()
497       auto FromAttrs = LinksFrom->getAttrs();  in mergeDirect()
502       auto *NewLinksFrom = &linksAt(LinksFrom->getBelow());  in mergeDirect()
503       LinksFrom->remapTo(LinksInto->Number);  in mergeDirect()
504       LinksFrom = NewLinksFrom;  in mergeDirect()
508     if (LinksFrom->hasBelow()) {  in mergeDirect()
509       LinksInto->setBelow(LinksFrom->getBelow());  in mergeDirect()
514     LinksInto->setAttrs(LinksFrom->getAttrs());  in mergeDirect()
515     LinksFrom->remapTo(LinksInto->Number);  in mergeDirect()