Stefan Monnier writes: >> Remove the calls to `seq-into` from `seq-concatenate` >> Since most new types of seq would have to be defined as sequences (cons >> cells or CL structs, mostly), there is no need to convert the seqs to >> sequences (which can be a fairly expensive operation). > > I don't understand this change. Can't it cause two CL-structs to be > vconcat'd together, which wouldn't make much sense? The previous version of `seq-concatenate' did not prevent that, since CL-structs are vectors, thus sequences, and the function was using `sequencep' to determine if the seq had to be converted or not. Nico -- Nicolas Petton http://nicolas-petton.fr