Genie is a relatively new language similar to Python but compiles to C. We use it because its easy to learn, works well with many of our libraries, and is not itself a runtime dependency. This beginner task is to build a basic familiarity with the language.

Using the documentation, our codebase as working examples, and other students for help - build a small Genie-based application which opens a file (filename provided as argument), and makes sure it does not contain any tab characters. Return 0 if it does not, return 1 (error) if it does.

While working on this task you should join and remain in #CopyleftGames on Freenode to get help, feedback, and guidance from mentors and other developers.

When you've done, upload your work to the task.