Tags ending with a different tag than what it started. Example: <p>Hello</a>
Tags with open attributes (or closed with a different type of quote). Examples: <p style="color:red>Hello</p> or <p style="color:red'>Hello</p>
Which HTML tags are considered valid:
Tags ending with the same tag
Tags with closed attributes
Notes
This pattern does not support html tags inside of others, as it may match the whole parent element's tag.
This pattern does match unexistent html tags, which is not worth removing because it would make the pattern too long and also because custom html tags exist.
This pattern does support tags that look like this: <img src="https://example.com"/>