Correction de la récup des cellules référentes

        $refs = [];

        $formule = $cell->getFormule();

        $formule = str_replace('$', '', $formule);

        foreach ($this->cellsByName as $name => $cell) {

            ['col' => $col, 'row' => $row] = Calc::cellNameToCoords($name);

            $variants = [

                "[.$col$row]",

                "[.\$$col$row]",

                "[.$col\$" . "$row]",

                "[.\$$col\$" . "$row]",

            ];

            foreach ($variants as $vn) {

                if (false !== strpos($formule, $vn)) {

                    $refs[$n] = $c;

                }

            if (false !== strpos($formule, "[.$name]")) {

                $refs[$name] = $cell;

            }

        }