Stefan Monnier writes: >> So really than complain, please provide constructive alternatives. > > Or just go and rename it directly. Given that seq.el is completely free of side-effects (IIRC, there might be exceptions but I don't think so), and that map.el was done mimicking seq.el but for key/value collections, I like the idea of stating clearly when a function of map.el mutates the argument. Nico