Sending events to form with id literal passes it on to children

See the fiddle: https://jsfiddle.net/gez5j2dp/

Using hyperscript to send an event to `` using the syntax `trigger change on #foo` will send it to each of the children ``s as well. The desired behavior works with `trigger change on <#foo/>`.

It has been suggested that perhaps this behavior is due to `` being iterable.

まず、リンク先の JSFiddle で `trigger change on #foo` を使って動作を再現し、`trigger change on <#foo/>` と比較します。trigger コマンドがリテラルな id の対象とその子要素をどのように解決するかを追跡し、修正が完了したときにイベントが select 要素だけに到達することを確認します。

索引モデルが issue の本文から書いたものです。