Shorten while(true) to for(;;)

src/JS.php

@@ -415,6 +415,9 @@ class JS extends Minify
         $content = preg_replace('/\btrue\b/', '!0', $content);
         $content = preg_replace('/\bfalse\b/', '!1', $content);
 
+        // for(;;) is exactly the same as while(true)
+        $content = preg_replace('/\bwhile\(!0\)/', 'for(;;)', $content);
+
         return $content;
     }
 }

tests/js/JSTest.php

@@ -388,6 +388,12 @@ if(e.which==40&&index<$items.length-1)index++',
             'array["dont-replace"].key2',
         );
 
+        // shorten bools
+        $tests[] = array(
+            'while(true){break}',
+            'for(;;){break}',
+        );
+
         // https://github.com/matthiasmullie/minify/issues/10
         $tests[] = array(
             '// first mutation patch