@@ -119,6 +119,10 @@ static void emit(choices_t *choices) {

 	exit(EXIT_SUCCESS);

 }

+#define KEY_CTRL(key) ((key) - ('@'))

+#define KEY_DEL 127

+#define KEY_ESC 27

+

 static void run(tty_t *tty, choices_t *choices) {

 	choices_search(choices, search);

 	char ch;

@@ -131,40 +135,40 @@ static void run(tty_t *tty, choices_t *choices) {

 				search[search_size] = '\0';

 				choices_search(choices, search);

 			}

-		} else if (ch == 127 || ch == 8) { /* DEL || backspace */

+		} else if (ch == KEY_DEL || ch == KEY_CTRL('H')) { /* DEL || Backspace (C-H) */

 			if (search_size)

 				search[--search_size] = '\0';

 			choices_search(choices, search);

-		} else if (ch == 21) { /* C-U */

+		} else if (ch == KEY_CTRL('U')) { /* C-U */

 			search_size = 0;

 			search[0] = '\0';

 			choices_search(choices, search);

-		} else if (ch == 23) { /* C-W */

+		} else if (ch == KEY_CTRL('W')) { /* C-W */

 			if (search_size)

 				search[--search_size] = '\0';

 			while (search_size && !isspace(search[--search_size]))

 				search[search_size] = '\0';

 			choices_search(choices, search);

-		} else if (ch == 14) { /* C-N */

+		} else if (ch == KEY_CTRL('N')) { /* C-N */

 			choices_next(choices);

-		} else if (ch == 16) { /* C-P */

+		} else if (ch == KEY_CTRL('P')) { /* C-P */

 			choices_prev(choices);

-		} else if (ch == 9) { /* TAB */

+		} else if (ch == KEY_CTRL('I')) { /* TAB (C-I) */

 			strncpy(search, choices_get(choices, choices->selection), SEARCH_SIZE_MAX);

 			search_size = strlen(search);

 			choices_search(choices, search);

-		} else if (ch == 3 || ch == 4) { /* ^C || ^D */

+		} else if (ch == KEY_CTRL('C') || ch == KEY_CTRL('D')) { /* ^C || ^D */

 			clear(tty);

 			tty_close(tty);

 			exit(EXIT_FAILURE);

-		} else if (ch == 13) { /* CR */

+		} else if (ch == KEY_CTRL('M')) { /* CR */

 			clear(tty);

 			/* ttyout should be flushed before outputting on stdout */

 			tty_close(tty);

 			emit(choices);

-		} else if (ch == 27) { /* ESC */

+		} else if (ch == KEY_ESC) { /* ESC */

 			ch = tty_getchar(tty);

 			if (ch == '[' || ch == 'O') {

 				ch = tty_getchar(tty);