Feature request: allow to acess to the modifier for v-on when bound to functional component

It would be nice to share v-on modifier for functional components to add ability to extend standard v-on modifiers.

In simple cases we can work around of this by adding additional props to the functional component e.g. <my-comp @reset="process" modifier="hard"></my-comp>.

But there are cases when it is very difficult to do it the same way. I believe, this feature will help with this.

As an example with this feature we can create something like input-context component which handles input event when it is in focus:

<input-context 
    :focus="isFocused" 
    @click="isFocused = true" 
    @key.down="scrollDown(1)" 
    @wheel.down="scrollDown(3)">
      ...
</input-context>

[yyx990803]

Most modifiers (except .once and .native) are actually specific to native events, so they don’t really make much sense on components anyway. I think it’s best to keep component events simple and just use event name to differentiate them, since they are ultimately different events rather than the same event with different behavior.

[OEvgeny]

@yyx990803 hmm, you are right, probably nothing. Only it looks different from @keyup.down default syntax, but definitely can be used.

When we define v-on handler on component with modifier, it will silently be ignored and event without modifier will be fired. May be we can pass raw string with modifier (e.g. key.down) to the component event when it is not native event, or warn in dev mode what dot notation is not supported for component events. What do you think?