( scratchpad ) fred@zoom ~/factor> ./factor Loading /Users/fred/.factor-rc ( scratchpad ) USE: facsimile ( scratchpad ) \ test-iteration see USING: continuations io kernel prettyprint sequences ; IN: facsimile : test-iteration ( -- ) 10 iota [ dup 5 = [ [ save-and-exit ] callcc0 ] when . flush ] each ; #! this is on github: https://github.com/phred/facsimile