Callback does not currently support dynamically loaded option groups?

[mjjones0]

I'm looking through the source code at the load event and it does not seem that the callback function passed to load supports loading option groups from the server. Is there plans to implement this in the future?

I'm looking around line 1767 for the load function in selectize.js.

[risadams]

closing stale issues older than one year.
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