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    <h3>Editing: BufferCommand.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

/*
 * This file is part of Psy Shell.
 *
 * (c) 2012-2023 Justin Hileman
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Psy\Command;

use Psy\Exception\RuntimeException;
use Psy\Output\ShellOutput;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Interact with the current code buffer.
 *
 * Shows and clears the buffer for the current multi-line expression.
 */
class BufferCommand extends Command
{
    /**
     * {@inheritdoc}
     */
    protected function configure()
    {
        $this
            -&gt;setName('buffer')
            -&gt;setAliases(['buf'])
            -&gt;setDefinition([
                new InputOption('clear', '', InputOption::VALUE_NONE, 'Clear the current buffer.'),
            ])
            -&gt;setDescription('Show (or clear) the contents of the code input buffer.')
            -&gt;setHelp(
                &lt;&lt;&lt;'HELP'
Show the contents of the code buffer for the current multi-line expression.

Optionally, clear the buffer by passing the &lt;info&gt;--clear&lt;/info&gt; option.
HELP
            );
    }

    /**
     * {@inheritdoc}
     *
     * @return int 0 if everything went fine, or an exit code
     */
    protected function execute(InputInterface $input, OutputInterface $output): int
    {
        $app = $this-&gt;getApplication();
        if (!$app instanceof \Psy\Shell) {
            throw new RuntimeException('Buffer command requires a \Psy\Shell application');
        }

        $buf = $app-&gt;getCodeBuffer();
        if ($input-&gt;getOption('clear')) {
            $app-&gt;resetCodeBuffer();
            $output-&gt;writeln($this-&gt;formatLines($buf, 'urgent'), ShellOutput::NUMBER_LINES);
        } else {
            $output-&gt;writeln($this-&gt;formatLines($buf), ShellOutput::NUMBER_LINES);
        }

        return 0;
    }

    /**
     * A helper method for wrapping buffer lines in `&lt;urgent&gt;` and `&lt;return&gt;` formatter strings.
     *
     * @param array  $lines
     * @param string $type  (default: 'return')
     *
     * @return array Formatted strings
     */
    protected function formatLines(array $lines, string $type = 'return'): array
    {
        $template = \sprintf('&lt;%s&gt;%%s&lt;/%s&gt;', $type, $type);

        return \array_map(function ($line) use ($template) {
            return \sprintf($template, $line);
        }, $lines);
    }
}
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