id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,difficulty 1313,map/for-each sometimes misbehave in interpreted code,LemonBoy,,"`(map + #f)` rightfully gives an error because `#f` is not a list `(map + #f '())` on the other hand happily returns `()` ",defect,closed,major,someday,unknown,4.11.0,duplicate,,,medium