Question: An extra blank line at the end of the code block

[ngmy]

I use league/commonmark version 1.6.4 and league/html-to-markdown version 5.0.0.

<?php

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

use League\CommonMark\GithubFlavoredMarkdownConverter;
use League\HTMLToMarkdown\HtmlConverter;

$markdown = <<<MARKDOWN
```
hogehoge
```
MARKDOWN;

$markdownConverter = new GithubFlavoredMarkdownConverter([
    'html_input' => 'strip',
    'allow_unsafe_links' => false,
]);
$html = $markdownConverter->convertToHtml($markdown);

echo $html;

$htmlConverter = new HtmlConverter();
$markdown = $htmlConverter->convert($html);

echo $markdown;

The html generated during the process is as follows:

<pre><code>hogehoge
</code></pre>

The markdown generated at the end is as follows:

```
hogehoge

```

I have an extra blank line at the end of a code block.
Is there any way to prevent the extra blank line from being created?

[colinodell]

Good question! The CommonMark spec says:

The content of a code fence is treated as literal text

Because hogehoge is followed by a newline character before the final fence, that newline gets included.

There is no built-in way to remove that trailing newline character, but you could implement a custom event listener that listens for the DocumentParsedEvent, walks the AST looking for FencedCode notes, and then perform an rtrim() on the contents. Unfortunately, 1.x doesn't provide functionality to modify those contents, but 2.0 will! For 1.x you'd instead need to implement a custom renderer for FencedCode objects and strip the trailing newline that way.

[ngmy]

Thank you for your answer.
I think I understand now.