gnu-emacs@gentoo.org Gentoo GNU Emacs project Reazon is an Emacs implementation of miniKanren, a small domain-specific logic programming language. Whereas languages like Elisp deal with functions that take inputs and yield outputs, miniKanren deals with sets of values that satisfy relations. Every function is a relation, but not vice versa, since a relation might include the output of a function but not its inputs. In such a case, miniKanren would attempt to find inputs yielding the output, effectively running the function backwards. https://github.com/nickdrozd/reazon/issues/ nickdrozd/reazon