tags 40180 + patch quit Stephen Berman writes: > Similarly, (cl-concatenate 'vector '[a b c] '[d e f]) returns `[[a b c] > [d e f]]' and worse, (cl-concatenate 'string "abc" "def") raises the > error: Wrong type argument: characterp, "abc". This is because > cl-concatenate is now defined in terms of seq-concatenate, which is > defined by cl-defgeneric, which adds an extra pair of parens around the > SEQUENCES argument I think the problem is just that cl-concatenate should call seq-concatenate with apply.