Short syntax for v-bind attributes with the same names

[davletovalmir]

What problem does this feature solve?

Reduce amount of code and make code neater.

What does the proposed API look like?

It looks like ES6 destructuring assignment: ... :foo ... instead of ... :foo='foo' ....

Right now it doesn't work, since according with standards, such attributes are considered as Boolean Attributes and converted from ... :foo ... to :foo=":foo". And I'm not even sure if it's not a bad practice to use them in proposed way (since if such attributes are called Boolean Attributes, they should represent boolean values). But having that feature would be really great!

[sqal]

This idea has been proposed before -> #2877