Colons used in tag attributes

[davedbase]

This suggestion is submitted by @titoBouzout and comes from a recent conversation related to oncapture and once.

Solid currently has <div oncapture:click={bla} /> as well as <MyComponent>{/*@once*/ state.wontUpdate}</MyComponent> however that can be quite limiting. It would be interesting to explore the idea of stacking the colons <div onClick:capture:once={bla}/> or maybe if not delegate <div on:click:capture:once={bla} />.

There are a couple concerns regarding parsing this and breaking HTML validity. This would also break TS.