Fixing REPL completion candidates for wildcard imports

Question

There is currently a severe REPL limitation:

scala> import concurrent._
import concurrent._

scala> Fut<tab>

This doesn't complete to Future. In other words, wildcard imports are not understood by the JLineCompletion.

I am trying to work around this. I am able to find the ImportHandler instances which report importsWildcard == true, but they are otherwise empty except for the plain importString (e.g., "import concurrent._").

How do I get a list of these wildcard imports, so I can fix the completion candidates?

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One idea is as follows: I can get the completions for concurrent.<tab>, so somehow there must be already the functionality to look up the members of a package via the IMain instance.

Answer 1

This problem doesn't affect current versions of Scala. I tried the sbt console with Scala 2.12.4, and tab completion works with wildcard imports. (Beware of this problem, through).