few more ansi sequences done

gui/gui.go

@@ -64,6 +64,8 @@ func (gui *GUI) key(w *glfw.Window, key glfw.Key, scancode int, action glfw.Acti
 			gui.capslock = !gui.capslock
 		case glfw.KeyEnter:
 			gui.terminal.Write([]byte{0x0a})
+		case glfw.KeyBackspace:
+			gui.terminal.Write([]byte{0x08})
 		default:
 			if key >= 0x41 && key <= 0x5a { // A-Z, normalise to lower
 				key += 0x20

terminal/terminal.go

@@ -259,6 +259,11 @@ func (terminal *Terminal) Read() error {
 					terminal.newLine()
 				case 0x0d:
 					terminal.position.Col = 0
+				case 0x08:
+					// backspace
+					terminal.position.Col--
+				case 0x07:
+					// @todo ring bell
 				default:
 					// render character at current location
 					//		fmt.Printf("%s\n", string([]byte{b}))