module FriendlyFire

# File lib/friendlyfire.rb, line 6
def self.print_friendly(file)
  cmd = "ruby #{file}"

  output = ""
  Open3.popen3(cmd) do |stdin, stdout, stderr, wait_thr|
    output << stderr.read
  end

  # error status returned
  if output
    lines = output.lines

    # Future, red the first line originating from a file in the same directory, ie. not in a gem
    puts lines.shift.chomp.red
    lines.each do |line|
      if line =~ /from\s[^\/]/
        puts line.chomp.red
      else
        puts line
      end
    end
  end
end