Wish Autocomplete in Select Structure

This is hopefully kind of a small request. It would be nice if autocomplete would work within a select block. Maybe there is some reason this would be difficult to implement.

By a select block I mean:

It is not related to the Select block. It is related to the usage of colon as a new line. Change the code to:
Autocomplete doesn't work in lines separated by colons. It is not recommended to use this pattern.