nitpick: Since the inverse of array-curry is array-decurry, does it make
sense to call the inverse of array-tile array-detile (or array-untile) rather
than array-block?
Makes sense to me. _Block_ is very ambiguous; "tile" not so much. Various dictionaries give _untile_ in the sense of 'remove tiles from'; they don't have entries for _detile_, so I'd go with `array-untile`.