WordPress does not preserve original comment text in database

[AmbushCommander]

Steps to reproduce:

1. Write a comment which contains some invalid HTML, e.g. <s>a</s>
2. Submit comment
3. View comment in database

Expected results: Comment in database is original, verbatim comment input by commentor

Actual result: Comment in database has had HTML stripped out, e.g.

mysql> select comment_content from wp_comments where comment_id = 2;
+-----------------+
| comment_content |
+-----------------+
| a               |
+-----------------+
1 row in set (0.00 sec)

This is bad behavior because if a user formats a comment incorrectly, WordPress will silently eat their markup, and an administrator has no way of retroactively going and fixing the comment. WordPress should *always always always* keep the original text.

[miqrogroove]

kses has been hooked to the comment_text filter since at least 3.1.0. This is by design, and I see no reason to change it.

You could easily remove that security mechanism or modify it as needed to save raw inputs.