ASCII terminal special chars

special-chars.rb

def show_single_key
  c = read_char
	case c
	when " "
	  puts "SPACE"
	when "\t"
	  puts "TAB"
	when "\r"
	  puts "RETURN"
	when "\n"
	  puts "LINE FEED"
	when "\e"
	  puts "ESCAPE"
	when "\e[A"
	  puts "UP ARROW"
	when "\e[B"
	  puts "DOWN ARROW"
	when "\e[C"
	  puts "RIGHT ARROW"
	when "\e[D"
	  puts "LEFT ARROW"
	when "\177"
	  puts "BACKSPACE"
	when "\004"
	  puts "DELETE"
	when /^.$/
	  puts "SINGLE CHAR HIT: #{c.inspect}"
	else
	  puts "SOMETHING ELSE: #{c.inspect}"
	end
end