“Simple Syntax Highlighting” plugin for generic syntax highlighting was recently developed by one of the IntelliJ IDEA enthusiasts. The plugin uses simple configuration files to add syntax highlighting for such programming languages as Python and, of course, Ruby.
The plugin is free and can be downloaded via IntelliJ IDEA Plugin Manager. You can read more about this plugin at its web site (http://idea-simsyn.tigris.org/) or in IntelliJ IDEA Plugin Repository.
There is already some feedback from plugin users:
- IntelliJ Ruby Syntax Highlighting Plugin from Jay Fields
- Even Better Random Times for Rails from Obie Fernandez where he uses IntelliJ IDEA with the Simple Syntax Highlighting plugin for random date generation