Returns SEQ with the first HOW-MANY elements removed.
(defun but-head (seq &optional (how-many 1)) "Returns SEQ with the first HOW-MANY elements removed." (let ((seq-length (length seq))) (cond ((<= 0 how-many (length seq)) (subseq seq how-many)) ((< seq-length how-many) (copy-seq seq)) (t (but-tail seq (- how-many))))))Source Context