551             foreach ($block->args as $arg) {
552                 if ($arg[0] == "arg" && isset($keywordArgs[$arg[1]])) {
556                 $remainingArgs[] = $arg;
562         foreach ($remainingArgs as $i => $arg) {
563             switch ($arg[0]) {
565                     if (empty($orderedArgs[$i]) || !$this->eq($arg[1], $orderedArgs[$i])) {
571                     if (!isset($orderedArgs[$i]) && !isset($arg[2])) {
711                 foreach ((array)$args as $arg) {
713                     switch ($arg[0]) {
715                             if (!isset($arg[2])) {
716                                 $orderedArgs[] = $this->reduce(array("variable", $arg[1]));
718                                 $keywordArgs[$arg[1]] = $this->reduce($arg[2]);
723                             $orderedArgs[] = $this->reduce($arg[1]);
726                             $this->throwError("Unknown arg type: " . $arg[0]);
1096     protected function lib_e($arg) {  argument
1097         switch ($arg[0]) {
1099                 $items = $arg[2];
1105                 $arg[1] = "";
1106                 return $arg;
1108                 return $arg;
1110                 return array("keyword", $this->compileValue($arg));
1142     protected function lib_floor($arg) {  argument
1143         $value = $this->assertNumber($arg);
1144         return array("number", floor($value), $arg[2]);
1147     protected function lib_ceil($arg) {  argument
1148         $value = $this->assertNumber($arg);
1149         return array("number", ceil($value), $arg[2]);
1152     protected function lib_round($arg) {  argument
1153         if($arg[0] != "list") {
1154             $value = $this->assertNumber($arg);
1155             return array("number", round($value), $arg[2]);
1157             $value = $this->assertNumber($arg[2][0]);
1158             $precision = $this->assertNumber($arg[2][1]);
1159             return array("number", round($value, $precision), $arg[2][0][2]);
1163     protected function lib_unit($arg) {  argument
1164         if ($arg[0] == "list") {
1165             [$number, $newUnit] = $arg[2];
1169             return array("number", $this->assertNumber($arg), "");
1273     protected function lib_percentage($arg) {  argument
1274         $num = $this->assertNumber($arg);
3295                     $arg = array("arg", $value[1]);
3299                         $arg[] = $rhs;
3303                             $arg[0] = "rest";
3308                     $values[] = $arg;
3326                         foreach ($values as $i => $arg) {
3327                             switch($arg[0]) {
3332                                     $newList[] = $arg[2];
3335                                     $newList[] = $arg[1];