The official Kotlin LSP answers navigation into a dependency with a
`jar:///…/lib.jar!/pkg/Name.class` URI but does not serve its contents through
`workspace/textDocumentContent`, so opening the target failed with "no
language server provides the contents of jar:…", locally and remotely.
`jar:` URIs are now resolved by the backend, where the jars are:
- An entry that is not a class (a sources jar entry, a resource) is read from
its archive.
- A class is shown as its source from the artifact's `-sources.jar` in the
Maven repository or the Gradle cache (`Name.java`/`Name.kt`, an inner
class's outer file, a `FileKt` facade's `File.kt`, a `@file:JvmName`
file); Go to Declaration then lands on the declaration of the name it was
invoked on.
- Otherwise the server's `decompile` command is used when it offers one, and
the error says that neither a source nor a decompiler is available.
- Library tabs name the archive and package (`spring-boot-3.5.16.jar ›
org.springframework.boot`).
Fixes#982
l0ng-ai