Thanks. And as your last example illustrates, downward ranges are automatically invoked: $ echo {10..1} 10 9 8 7 6 5 4 3 2 1 As are negative endpoints (s

Thanks. And as your last example illustrates, downward ranges are automatically invoked: $ echo {10..1} 10 9 8 7 6 5 4 3 2 1 As are negative endpoints (shown below with some automatic number formatting, which is turned on when either the first or the second endpoint is padded): $ echo {2..-002} 0002 0001 0000 -001 -002 I just noticed that all this is documented behavior -- another illustration of how rococo this shell has become.