From 2ba118a36d40744042409074f85a0a7f5fc1571f Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Tue, 5 May 2020 11:01:49 +0200
Subject: [PATCH] [Console] don't check tty on stdin, it breaks with "data lost
 during stream conversion"

---
 .../Component/Console/Helper/QuestionHelper.php | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/src/Symfony/Component/Console/Helper/QuestionHelper.php b/src/Symfony/Component/Console/Helper/QuestionHelper.php
index 4e0afeae78a0d..4bdb16871fe64 100644
--- a/src/Symfony/Component/Console/Helper/QuestionHelper.php
+++ b/src/Symfony/Component/Console/Helper/QuestionHelper.php
@@ -20,6 +20,7 @@
 use Symfony\Component\Console\Output\ConsoleOutputInterface;
 use Symfony\Component\Console\Output\ConsoleSectionOutput;
 use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Output\StreamOutput;
 use Symfony\Component\Console\Question\ChoiceQuestion;
 use Symfony\Component\Console\Question\Question;
 use Symfony\Component\Console\Terminal;
@@ -462,7 +463,7 @@ private function validateAttempts(callable $interviewer, OutputInterface $output
         $error = null;
         $attempts = $question->getMaxAttempts();
 
-        if (null === $attempts && !$this->isTty()) {
+        if (null === $attempts && !$this->isTty($output)) {
             $attempts = 1;
         }
 
@@ -509,16 +510,22 @@ private function getShell()
         return self::$shell;
     }
 
-    private function isTty(): bool
+    private function isTty(OutputInterface $output): bool
     {
-        $inputStream = !$this->inputStream && \defined('STDIN') ? STDIN : $this->inputStream;
+        if (!$output instanceof StreamOutput) {
+            return true;
+        }
+
+        if (\DIRECTORY_SEPARATOR === '\\' && \function_exists('sapi_windows_vt100_support')) {
+            return @sapi_windows_vt100_support($output->getSteam());
+        }
 
         if (\function_exists('stream_isatty')) {
-            return stream_isatty($inputStream);
+            return stream_isatty($output->getStream());
         }
 
         if (!\function_exists('posix_isatty')) {
-            return posix_isatty($inputStream);
+            return posix_isatty($output->getStream());
         }
 
         return true;