Tokenize before do other process.
We can adapt to use for header tag.

HTML body tokenize

Trying to adapt this regex to support LVM.

lsblk-output-regex

user-agent

A regular expression to parse a HTML 'Link' header.

Regex: Parse LinkHeader ('Link' header)

Variable, -> "Variable",

Matches everything before after // or www and before a period. 

If needed, replace the matched elements with blanks. 

Domain from URL

white space before punctuations, outside script and code tags

Check if HTTP Header of Public-Key-Pins has all nessery values for highest security

Secure HTTP Header: Public-Key-Pins

[Other patterns](https://gist.github.com/jrobinsonc/2171654fa2b747a056f30b91fae3b4e1)

HTML body tokenize

Tokenize before do other process. We can adapt to use for header tag.

<h1>header</h1> <img src="http://example.com/img.png" title="single tag"/> <p>long text</p> <img src="http://example.com/img2.png" title="single tag"/>      <ul> <li>item1</li> <li>item2</li> <li>item3</li> </ul>   some text   <br class="unclosed">

Additional matching regexes for
HTML body tokenize