```suggestion  \t\t\t'~[\\t\\x{0a}\\x{0c} ]*(?P<NAME>=?[^=/>\\t\\x{0C} ]*)~Smiu',  ```    The [Before attribute name](https://html.spec.whatwg.org/multipage/parsing.html#before-attribute-name-state) state ignores the following characters:    - U+0009 CHARACTER TABULATION (tab)  - U+000A LINE FEED (LF)  - U+000C FORM FEED (FF)  - U+0020 SPACE    But it does not mention U+000D