When filter-map was called with a single list, it failed to filter and map across that list since filter-map-2 was applied to the empty list of lists instead of the first list. I stumbled upon this when adapting srfi196 ranges which relies on filter-map from srfi1
When filter-map was called with a single list, it failed to filter and map across that list since filter-map-2 was applied to the empty list of lists instead of the first list. I stumbled upon this when adapting srfi196 ranges which relies on filter-map from srfi1