Are those in favor of HAML compatibility or not in favor of html brackets all in favor of HAML attribute syntax? instead of: %foo!bar=baz!class=more this: %foo(bar=baz class=more) I didn't like it because it is one extra character, but it is more readable and HAML compatible. We could also allow not having a closing parens (when there is no inner text). I am now beginning to appreciate why Michael chose the '!', but if we support 2 syntaxes going forward it would be nice if one as HAML compatible as possible.