I just got a new computer and installed RubyMine on it.
Now, when I'm editing a file and hit Alt-/ I get a division symbol (÷).
On my old machine (I still have it, so I went back and tested), I get Emacs dabbrev-expand style completion: e.g. if this message forum textbox was my editor, I could type "RubyM" and hit Alt-/ and it would autocomplete to RubyMine.
Can someone tell me how to get this behavior on my new machine?
If it matters, both machines run MacOS 10.10.3, but the old one uses Java 6 and the new one uses Java 8 (I followed some JetBrains guide to allow using the new Java version, and it seems to work fine otherwise).