Special symbols in code block is converted

[jencijanos]

Describe the bug

Symbols such as >, <, and " are converted to their ampersand variants when used inside a code block, but they remain unchanged when outside a code block

To reproduce

I create a post and publish it. After I press publish > and < get’s immediately converted to > and < in the original markdown text. The markdown text was not saved correctly to the database. See "Additional context"

Expected behavior

I expect keep original text inside code blocks.

Screenshots

Visual changes after publish

Data stored in DB

Server environment

• Ubuntu 22.04
• Wordpress 6.6
• WP Githuber MD plugin Version 1.16.3
• PHP 8.1.2-1ubuntu2.18

Clean install, no other plugins or special settings applied.

User environment

• OS: macOS Monterey 12.7.5
• Browser Safari 17.5, Chrome 126.0.6478.183

Additional context

Data from DB post_content_filtered

i want to keep what i write

one symbol > or "amp" representation >

one symbol < or "amp" representation &lt;

```
one symbol &gt; or &quot;amp&quot; representation &gt;
&lt;title&gt;
```

Expected markdown text

i want to keep what i write

one symbol > or "amp" representation >

one symbol < or "amp" representation &lt;

```
one symbol > or "amp" representation &gt;
<title>
```

[jencijanos]

Example:

Input markdown text:

~~~
({
'&': '&',
'<': '&lt;',
'>': '&gt;',
'"': '&quot;',
"'": '&apos;'
}
[tag])
~~~

After Publis post in /wp-admin/post.php $_REQUEST['content'] i see:

~~~\r\n({\r\n\\'&\\': \\'&amp;\\',\r\n\\'<\\': \\'&lt;\\',\r\n\\'>\\': \\'&gt;\\',\r\n\\'\\"\\': \\'&quot;\\',\r\n\\"\\'\\": \\'&apos;\\'\r\n}\r\n[tag])\r\n~~~\r\n

And in wp-githuber-md/src/Controllers/Markdown.php function wp_insert_post_data the $post_data['post_content'] contain:

~~~\r\n({\r\n'&': '&',\r\n'<': '<',\r\n'>': '>',\r\n'"': '"',\r\n"'": '''\r\n}\r\n[tag])\r\n~~~\r\n

The > symbol converted to > but ">" entity isn't changed, not converted to >. Same situation with other symbols

I don't know where these changes happen, but maybe outside the plugin