Use ??= more

Author: nicolas-grekas

AbstractUnicodeString.php

@@ -121,10 +121,10 @@ public function ascii(array $rules = []): self
                     $s = preg_replace("/([AUO])\u{0308}(?=\p{Ll})/u", '$1e', $s);
                     $s = str_replace(["a\u{0308}", "o\u{0308}", "u\u{0308}", "A\u{0308}", "O\u{0308}", "U\u{0308}"], ['ae', 'oe', 'ue', 'AE', 'OE', 'UE'], $s);
                 } elseif (\function_exists('transliterator_transliterate')) {
-                    if (null === $transliterator = self::$transliterators[$rule] ?? self::$transliterators[$rule] = \Transliterator::create($rule)) {
+                    if (null === $transliterator = self::$transliterators[$rule] ??= \Transliterator::create($rule)) {
                         if ('any-latin/bgn' === $rule) {
                             $rule = 'any-latin';
-                            $transliterator = self::$transliterators[$rule] ?? self::$transliterators[$rule] = \Transliterator::create($rule);
+                            $transliterator = self::$transliterators[$rule] ??= \Transliterator::create($rule);
                         }
 
                         if (null === $transliterator) {
@@ -550,9 +550,7 @@ private function wcswidth(string $string): int
                 return -1;
             }
 
-            if (null === self::$tableZero) {
-                self::$tableZero = require __DIR__.'/Resources/data/wcswidth_table_zero.php';
-            }
+            self::$tableZero ??= require __DIR__.'/Resources/data/wcswidth_table_zero.php';
 
             if ($codePoint >= self::$tableZero[0][0] && $codePoint <= self::$tableZero[$ubound = \count(self::$tableZero) - 1][1]) {
                 $lbound = 0;
@@ -569,9 +567,7 @@ private function wcswidth(string $string): int
                 }
             }
 
-            if (null === self::$tableWide) {
-                self::$tableWide = require __DIR__.'/Resources/data/wcswidth_table_wide.php';
-            }
+            self::$tableWide ??= require __DIR__.'/Resources/data/wcswidth_table_wide.php';
 
             if ($codePoint >= self::$tableWide[0][0] && $codePoint <= self::$tableWide[$ubound = \count(self::$tableWide) - 1][1]) {
                 $lbound = 0;