__color__,__group__,ticket,summary,component,milestone,type,created,_changetime,_description,_reporter
4,anonymous,2,unfoldU off-by-one,component1,,defect,2009-01-24T20:30:09Z+0000,2009-01-25T10:03:28Z+0000,"unfoldU 5 (const $ JustS (1 :*: 1)) 1 

yields

toU [1.0,1.0,1.0,1.0,1.0,4.250268257e-314] (length 6).

This only happens if a NothingS is not encountered (i.e., if you're trying to use the length argument to limit the unfold).",pumpkingod@…