If you define a static attribute, Vue will not attempt to dynamically merge it.

If you provide a binding, Vue will do that:

https://jsfiddle.net/t0kb6vyu/3/

Ok, nice to know. But Vue 1 did merge regardless of static or dynamic attribute. It would be nice if this behavior can be continued with Vue 2 as this is quite important when writing libraries/frameworks with Vue 2. I can elaborate if needed. Just my thoughts. Thanks for the answer!

Yeah we will look into that, sure!

Like class module, I think style should also have the same behavior for consistency. I'll try to make a PR.

@defcc yeah, probably need to treat staticStyle and style separately, and need to parse static style strings into objects.

OK, I'll take a look :)

Almost done. I'll make a PR later.

Will this change merge styles in this case?

<text-element style="color: red;"/>

text-element.vue

<script>
  export default {
    render(createElement) {
      return createElement('input', {
        attrs: {
          type: 'text',
          style: 'text-align: right;'
        }
      });
    }
  };
</script>