🔧

vendor/symfony/console/Output/StreamOutput.php

@@ -40,7 +40,7 @@ class StreamOutput extends Output
      *
      * @throws InvalidArgumentException When first argument is not a real stream
      */
-    public function __construct($stream, int $verbosity = self::VERBOSITY_NORMAL, bool $decorated = null, OutputFormatterInterface $formatter = null)
+    public function __construct($stream, int $verbosity = self::VERBOSITY_NORMAL, ?bool $decorated = null, ?OutputFormatterInterface $formatter = null)
     {
         if (!\is_resource($stream) || 'stream' !== get_resource_type($stream)) {
             throw new InvalidArgumentException('The StreamOutput class needs a stream as its first argument.');
@@ -93,21 +93,33 @@ class StreamOutput extends Output
     protected function hasColorSupport(): bool
     {
         // Follow https://no-color.org/
-        if (isset($_SERVER['NO_COLOR']) || false !== getenv('NO_COLOR')) {
+        if ('' !== (($_SERVER['NO_COLOR'] ?? getenv('NO_COLOR'))[0] ?? '')) {
             return false;
         }
 
-        if (\DIRECTORY_SEPARATOR === '\\'
-            && \function_exists('sapi_windows_vt100_support')
-            && @sapi_windows_vt100_support($this->stream)
+        // Detect msysgit/mingw and assume this is a tty because detection
+        // does not work correctly, see https://github.com/composer/composer/issues/9690
+        if (!@stream_isatty($this->stream) && !\in_array(strtoupper((string) getenv('MSYSTEM')), ['MINGW32', 'MINGW64'], true)) {
+            return false;
+        }
+
+        if ('\\' === \DIRECTORY_SEPARATOR && @sapi_windows_vt100_support($this->stream)) {
+            return true;
+        }
+
+        if ('Hyper' === getenv('TERM_PROGRAM')
+            || false !== getenv('COLORTERM')
+            || false !== getenv('ANSICON')
+            || 'ON' === getenv('ConEmuANSI')
         ) {
             return true;
         }
 
-        return 'Hyper' === getenv('TERM_PROGRAM')
-            || false !== getenv('ANSICON')
-            || 'ON' === getenv('ConEmuANSI')
-            || str_starts_with((string) getenv('TERM'), 'xterm')
-            || stream_isatty($this->stream);
+        if ('dumb' === $term = (string) getenv('TERM')) {
+            return false;
+        }
+
+        // See https://github.com/chalk/supports-color/blob/d4f413efaf8da045c5ab440ed418ef02dbb28bf1/index.js#L157
+        return preg_match('/^((screen|xterm|vt100|vt220|putty|rxvt|ansi|cygwin|linux).*)|(.*-256(color)?(-bce)?)$/', $term);
     }
 }