to / til is same on non-numbers

[paulmillr]

coco> [1 to 5]
[ 1, 2, 3, 4, 5 ]
coco> [1 til 5]
[ 1, 2, 3, 4 ]
coco> [\a to \d]
[ 'a', 'b', 'c', 'd' ]
coco> [\a til \d]
[ 'a', 'b', 'c', 'd' ]

[satyr]

Right, it's pretty broken:

$ coco -pe '[97 til 100]'
[ 97, 98, 99, 100 ]

Will overhaul.