Pierre Lorenzon writes: Hi Pierre, > I well understand now that I must use seq-find instead of > seq-some but I think that I will not be the only one being > confused by these functions specifications ! There is a mistake (extra if) in the documentation, I will fix that. Other than that, is the following less confusing? Return non-nil if PRED returns non-nil for at least one element of SEQUENCE. If so, return the value returned by PRED. Cheers, Nico