MODE_8BIT        = 8192,
        MODE_BLINK       = 16384,
        MODE_FBLINK      = 32768,
+       MODE_FOCUS       = 65536,
 };
 
 enum escape_state {
                                MODBIT(term.mode, set, MODE_MOUSEMOTION);
                                MODBIT(term.mode, 0, MODE_MOUSEBTN);
                                break;
+                       case 1003: /* 1003: enable all mouse reports */
+                               MODBIT(term.mode, set, MODE_MOUSEMOTION);
+                               MODBIT(term.mode, set, MODE_MOUSEBTN);
+                               break;
+                       case 1004:
+                               MODBIT(term.mode, set, MODE_FOCUS);
+                               break;
                        case 1006:
                                MODBIT(term.mode, set, MODE_MOUSESGR);
                                break;
                        case 1048:
                                tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
                                break;
+                       case 9: /* X10 compatibility mode */
+                       case 1001: /* mouse highlight mode; can hang the
+                                     terminal when implemented. */
                        default:
                                fprintf(stderr,
                                        "erresc: unknown private set/reset mode %d\n",
                XSetICFocus(xw.xic);
                xw.state |= WIN_FOCUSED;
                xseturgency(0);
+               if(IS_SET(MODE_FOCUS))
+                       ttywrite("\033[I", 3);
        } else {
                XUnsetICFocus(xw.xic);
                xw.state &= ~WIN_FOCUSED;
+               if(IS_SET(MODE_FOCUS))
+                       ttywrite("\033[O", 3);
        }
 }