- Display the Kotlin version in kotlin-gradle-plugin. This is needed
because if "-version" is specified in compiler arguments, the "info"
level of the message printed by the compiler in CLICompiler prevents
it from being displayed by default (unless "--debug" is passed to
Gradle).
- Display the version of JRE the compiler is running on. This will be
helpful to diagnose Java 9 related issues in the future.
- In CLI, also display the executable name (kotlinc-jvm or kotlinc-js)
- render the whole line where the error/warning points to, if any, and another
line with '^', like other compilers do
- lowercase diagnostic severity
- decapitalize the message if it doesn't start with a proper name
But when running code, do it via <java> task, not via custom testing code. Most
of the time the compiled code need not be runned, because it's irrelevant to
the Ant task itself
Mikhail Glukhikh