One of my quizzes included the copyright header for swift which was a giveaway, another was simply a pair of closing brackets and no other text at all, making it impossible. Overall the other ones that worked when it did work were fun though.
Hint: Language is Javascript
Hint: Owner is "Facebook"
Hint: Other languages used in the repo include
HTML 2.8% CSS 1.5% C++ 1.0% TypeScript 0.5% CoffeeScript 0.4% Other 0.2%
i was thinking it could be like hangman style..
_ _ A C T