Add syntax support for Unicode characters in HTML custom elements and data-* custom attributes
Non-ASCII characters in custom elements and data-* custom attributes should be supported:
<ex-元素 data-屬性="test">...</ex-元素>
Edited by 張俊芝
Non-ASCII characters in custom elements and data-* custom attributes should be supported:
<ex-元素 data-屬性="test">...</ex-元素>