Merge branch '5.4' into 6.0

* 5.4:
  [Filesystem] Replace occurrences of `operation system` to `operating system`

Path.php

@@ -183,11 +183,11 @@ public static function getDirectory(string $path): string
      *  - UNIX
      *  - Windows8 and upper
      *
-     * If your operation system or environment isn't supported, an exception is thrown.
+     * If your operating system or environment isn't supported, an exception is thrown.
      *
      * The result is a canonical path.
      *
-     * @throws RuntimeException If your operation system or environment isn't supported
+     * @throws RuntimeException If your operating system or environment isn't supported
      */
     public static function getHomeDirectory(): string
     {
@@ -201,7 +201,7 @@ public static function getHomeDirectory(): string
             return self::canonicalize(getenv('HOMEDRIVE').getenv('HOMEPATH'));
         }
 
-        throw new RuntimeException("Cannot find the home directory path: Your environment or operation system isn't supported.");
+        throw new RuntimeException("Cannot find the home directory path: Your environment or operating system isn't supported.");
     }
 
     /**

Tests/PathTest.php

@@ -1024,10 +1024,10 @@ public function testJoinVarArgs()
         $this->assertSame('/path/to/test/subdir', Path::join('/path', 'to', '/test', 'subdir/'));
     }
 
-    public function testGetHomeDirectoryFailsIfNotSupportedOperationSystem()
+    public function testGetHomeDirectoryFailsIfNotSupportedOperatingSystem()
     {
         $this->expectException(\RuntimeException::class);
-        $this->expectExceptionMessage('Your environment or operation system isn\'t supported');
+        $this->expectExceptionMessage('Your environment or operating system isn\'t supported');
 
         putenv('HOME=');