In a blog post from 2009
it was mentioned that
"IntelliJ IDEA Velocity integration is also capable of determining the language by a double file extension (e.g. foo.java.vm or bar.css.ft)"
However, that does not work for me. I have files like something.properties.vtl, and intellij was able to detect that it was a velocity template, but would assume the underlying data language to be "plain text". If I manually choose data language to be properties file then syntax highlighting etc works fine. How do I make intellij automatically detect the data language in this case? Do I need to edit some configuration setting? I am running IU-10.5.2 on mac os x 10.6