$ OUT=$(smenu -i[2-3] -e3 -i5 t0003.in)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 
0:24 4:24 6:24 8:07 10:24 12:24 14:24 16:24 18:24 19:24 21:24 22:24 27:24 28:24 30:24 31:24 36:24 37:24 39:24 40:24 42:24 43:24 45:24 46:24 
$ 

$ echo ":$OUT:"

:5:

$ exit 0