jmh.jvmArgs doesn't seem to work correctly

[fcurts]

Plugin version 0.6.5, Gradle 7.0.2, macOS 11.4, JDK 11.

I'm trying to set multiple JVM args in build.gradle.kts. I'm not totally sure what the correct syntax is, but I've tried:

jmh {
  jvmArgs.set(listOf(   // also tried jvmArgsAppend, also tried .addAll
    "--module-path=${foo.asPath}",
    "--upgrade-module-path=${bar.asPath}"
  ))
}

The above doesn't work (fails with errors such as "can't find main class --upgrade-module-path").
However, the following works:

jmh {
  jvmArgs.set(listOf(
    "--module-path=${foo.asPath} --upgrade-module-path=${bar.asPath}"
  ))
}

This makes me think that setting multiple JVM args is broken.

[blacklion]

Also, there is problem with spaces in individual jvmArgs. Maybe, on macOS and Linux it is unusual, but on Windows arguments like -Djava.library.path or --moudle-path can contains spaces easily, and I can not find proper escaping for this. "\"arg with spaces\"" doesn't work and simple "arg with spaces" doesn't work either, though with different error messages.