On 1/21/21 4:51 PM, H. S. Teoh wrote: > But I wouldn't be surprised if there was some > surprising corner case for which this doesn't work / would have onerous > characteristics. Likely. :) Here is one for uniq.back, which includes a link at the bottom for zip.back: https://issues.dlang.org/show_bug.cgi?id=16588 Ali