Simple example showing how multi-line responses work with symfony/console.

app.php

<?php

declare(strict_types=1);

use Symfony\Component\Console\Application;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\ArgvInput;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Question\Question;
use Symfony\Component\Console\Style\SymfonyStyle;

(static function (array $argv): void {
    require __DIR__ . '/vendor/autoload.php';

    $command = new class('test') extends Command {
        protected function execute(InputInterface $input, OutputInterface $output): int
        {
            $style = new SymfonyStyle($input, $output);
            $style->title('Test a Command');

            $question = new Question('What is the thing?');
            $question->setMultiline(true);
            $thing = $style->askQuestion($question);

            $style->block($thing ?? '');

            return Command::SUCCESS;
        }
    };

    $application = new Application('Test');
    $application->add($command);
    $application->run(new ArgvInput($argv));
})($argv);

symfony/console version 5.2 :)

If I try Multiline first, and then no multiline, I have a problem.

It seems the ctrl+d is kind of "saved" and so, the command is "Aborted"

Am I the only one with this problem ?