I’m writing my own ExUnit formatter, and its dependent on knowing the terminal width to properly output its results.
I make a call to the Erlang io:columns/0 function in the init of my formatter. Instead of giving me a tuple of {:ok, <termwidth>}, I get {:error, :enotsup}. Erlang docs indicate that this is because I’m trying to read the terminal width of a non-tty.
Question is, how can I get the termwidth of the current TTY outputting the results of my ExUnit test run. If they are not being output to a TTY that is acceptable, I can code a fallback.
