issue_3826.php

<?php

require_once __DIR__.'/../vendor/autoload.php';

use Gnugat\Redaktilo\Filesystem;
use Gnugat\Redaktilo\Editor;
use Gnugat\Redaktilo\File;
use Symfony\Component\Filesystem\Filesystem as SymfonyFilesystem;

$symfonyFilesystem = new SymfonyFilesystem();
$filesystem = new Filesystem($symfonyFilesystem);
$editor = new Editor($filesystem);

$files = new \RegexIterator(
    new \RecursiveIteratorIterator(
        new \RecursiveDirectoryIterator(__DIR__.'/../')
    ), '/\.rst(?:\.inc)?$/',
    \RegexIterator::MATCH
);

foreach ($files as $filename) {
    $file = $editor->open($filename);

    try {
        remove_dollars($editor, $file);
    } catch (\Exception $e) {
    }

    echo $filename, PHP_EOL;

    $editor->save($file);
}

function remove_dollars(Editor $editor, File $file) {
    $editor->jumpDownTo($file, '.. code-block:: bash');
    $lines = $file->readlines();
    $editor->moveDown($file);

    while ((bool) preg_match('/^    /', $line = $lines[$file->getCurrentLineNumber()]) || '' === $line) {
        if ('' !== $line) {
            $editor->replaceWith($file, '/\$ /', '');
        }

        $editor->moveDown($file);
    }

    remove_dollars($editor, $file);
}