add caching#5971
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Optimize splitting content. This is a non-trivial operation when there are a lot of marked up spans. This update adds caching. If the render() method returns the same instance (as in the case of
Static) then a previous split operation can be cached.I noticed this with very large highlighted code. Selection would be slow because of the time spent in split.
There is still work to be done here, as text selection with large content is notiticably slow.