In eclipse I can include things like the following in the vm args or program args in a launch configuration:
-Dsome.system.property=${string.prompt:explanation:d
In the 2016 version of IntelliJ at least, you can access environment variables using the brace-enclosed environment variable syntax:
${HOME}/path/to/file
is expanded properly, but the alternative syntax
$HOME/path/to/file
does not work.
Version Info:
IntelliJ IDEA 2016.2.2
Build #IC-162.1628.40, built on August 16, 2016
JRE: 1.8.0_76-release-b216 amd64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o