Merge branch '4.0' into 4.1

* 4.0:
  Enable native_constant_invocation CS fixer

Author: nicolas-grekas

Helper/QuestionHelper.php

@@ -296,7 +296,7 @@ private function autocomplete(OutputInterface $output, Question $question, $inpu
      */
     private function getHiddenResponse(OutputInterface $output, $inputStream): string
     {
-        if ('\\' === DIRECTORY_SEPARATOR) {
+        if ('\\' === \DIRECTORY_SEPARATOR) {
             $exe = __DIR__.'/../Resources/bin/hiddeninput.exe';
 
             // handle code running from a phar

Output/StreamOutput.php

@@ -97,7 +97,7 @@ protected function hasColorSupport()
             return true;
         }
 
-        if (DIRECTORY_SEPARATOR === '\\') {
+        if (\DIRECTORY_SEPARATOR === '\\') {
             return (\function_exists('sapi_windows_vt100_support')
                 && @sapi_windows_vt100_support($this->stream))
                 || false !== getenv('ANSICON')

Style/SymfonyStyle.php

@@ -46,7 +46,7 @@ public function __construct(InputInterface $input, OutputInterface $output)
         $this->bufferedOutput = new BufferedOutput($output->getVerbosity(), false, clone $output->getFormatter());
         // Windows cmd wraps lines as soon as the terminal width is reached, whether there are following chars or not.
         $width = (new Terminal())->getWidth() ?: self::MAX_LINE_LENGTH;
-        $this->lineLength = min($width - (int) (DIRECTORY_SEPARATOR === '\\'), self::MAX_LINE_LENGTH);
+        $this->lineLength = min($width - (int) (\DIRECTORY_SEPARATOR === '\\'), self::MAX_LINE_LENGTH);
 
         parent::__construct($output);
     }
@@ -269,7 +269,7 @@ public function createProgressBar($max = 0)
     {
         $progressBar = parent::createProgressBar($max);
 
-        if ('\\' !== DIRECTORY_SEPARATOR || 'Hyper' === getenv('TERM_PROGRAM')) {
+        if ('\\' !== \DIRECTORY_SEPARATOR || 'Hyper' === getenv('TERM_PROGRAM')) {
             $progressBar->setEmptyBarCharacter('░'); // light shade character \u2591
             $progressBar->setProgressCharacter('');
             $progressBar->setBarCharacter('▓'); // dark shade character \u2593

Terminal.php

@@ -56,7 +56,7 @@ public function getHeight()
 
     private static function initDimensions()
     {
-        if ('\\' === DIRECTORY_SEPARATOR) {
+        if ('\\' === \DIRECTORY_SEPARATOR) {
             if (preg_match('/^(\d+)x(\d+)(?: \((\d+)x(\d+)\))?$/', trim(getenv('ANSICON')), $matches)) {
                 // extract [w, H] from "wxh (WxH)"
                 // or [w, h] from "wxh"

Tests/Helper/QuestionHelperTest.php

@@ -221,7 +221,7 @@ public function testAutocompleteWithTrailingBackslash()
 
     public function testAskHiddenResponse()
     {
-        if ('\\' === DIRECTORY_SEPARATOR) {
+        if ('\\' === \DIRECTORY_SEPARATOR) {
             $this->markTestSkipped('This test is not supported on Windows');
         }