[spc476]

I find luacheck (a linter for Lua) invaluable for picking up typos, unused variables, variables shadowing other variables and unintentional global use (since Lua defaults to global by default). The types of checks seems mostly reasonable to me [1][2].

[1] http://luacheck.readthedocs.io/en/stable/warnings.html

[2] I'm not entirely happy with the formatting issues, but they can be easily disabled.

Edit: hit submit by mistake.