title: Is there a way to apply regex modifiers for HTML5 input's pattern-attribute?
body: <p>There is <a href="https://html.spec.whatwg.org/multipage/forms.html#the-pattern-attribute" rel="nofollow">this snippet</a> from the HTML specification, but either I do not understand the specification or it does not exactly say anything too informative regarding the regex-modifiers.</p>