KT-27223: Intellij code completion for extension methods used in precompiled script plugins

[wolfs]

Code completion for extension methods defined in the same source set doesn't work for precompiled script plugins.

Expected Behavior

When trying to use an extension function, Intellij completes the name of the function.

Current Behavior

When I type in the name of the extension function, Intellij highlights it correctly and I can navigate to the source code:

Only typing part of the name doesn't show any completions:

Context

I was converting code from build.gradle.kts first into an extension function and then into a precompiled script plugin, which uses the extension function.

Steps to Reproduce (for bugs)

Here is the project I have been using: https://github.com/gradle/kotlin-dsl/blob/wolfs/jugm2018-talk/samples/hello-world/buildSrc/src/main/kotlin/my-plugin.gradle.kts

It is an adjusted version of the hello-world sample.

Your Environment

I am using Gradle 4.10.2, IntelliJ IDEA 2018.3 EAP (Ultimate Edition) Build #IU-183.2635.13 and the Kotlin plugin 1.3-M2-release-IJ2018.3-1.

[wolfs]

I openend https://youtrack.jetbrains.com/issue/IDEA-199593.

[JLLeitschuh]

@wolfs Traditionally, issues that are JB's issues have the title modified to reflect the external issue.
I suggest you rename your issue to:

IDEA-199593: Intellij code completion for extension methods used in precompiled script plugins

[wolfs]

Renamed. I guess @bamboo also may want to add some labels...

[wolfs]

The issues was attributed to Kotlin: https://youtrack.jetbrains.com/issue/KT-27223