diff options
Diffstat (limited to 'lisp/emacs-lisp/cl-seq.el')
| -rw-r--r-- | lisp/emacs-lisp/cl-seq.el | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/lisp/emacs-lisp/cl-seq.el b/lisp/emacs-lisp/cl-seq.el index 21aec6cdfcd..ed27b7c7d05 100644 --- a/lisp/emacs-lisp/cl-seq.el +++ b/lisp/emacs-lisp/cl-seq.el @@ -116,6 +116,16 @@ (defun cl-reduce (cl-func cl-seq &rest cl-keys) "Reduce two-argument FUNCTION across SEQ. \nKeywords supported: :start :end :from-end :initial-value :key + +Return the result of calling FUNCTION with the first and the +second element of SEQ, then calling FUNCTION with that result and +the third element of SEQ, then with that result and the fourth +element of SEQ, etc. + +If :INITIAL-VALUE is specified, it is added to the front of SEQ. +If SEQ is empty, return :INITIAL-VALUE and FUNCTION is not +called. + \n(fn FUNCTION SEQ [KEYWORD VALUE]...)" (cl--parsing-keywords (:from-end (:start 0) :end :initial-value :key) () (or (listp cl-seq) (setq cl-seq (append cl-seq nil))) @@ -134,24 +144,24 @@ cl-accum))) ;;;###autoload -(defun cl-fill (seq item &rest cl-keys) +(defun cl-fill (cl-seq cl-item &rest cl-keys) "Fill the elements of SEQ with ITEM. \nKeywords supported: :start :end \n(fn SEQ ITEM [KEYWORD VALUE]...)" (cl--parsing-keywords ((:start 0) :end) () - (if (listp seq) - (let ((p (nthcdr cl-start seq)) + (if (listp cl-seq) + (let ((p (nthcdr cl-start cl-seq)) (n (if cl-end (- cl-end cl-start) 8000000))) (while (and p (>= (setq n (1- n)) 0)) - (setcar p item) + (setcar p cl-item) (setq p (cdr p)))) - (or cl-end (setq cl-end (length seq))) - (if (and (= cl-start 0) (= cl-end (length seq))) - (fillarray seq item) + (or cl-end (setq cl-end (length cl-seq))) + (if (and (= cl-start 0) (= cl-end (length cl-seq))) + (fillarray cl-seq cl-item) (while (< cl-start cl-end) - (aset seq cl-start item) + (aset cl-seq cl-start cl-item) (setq cl-start (1+ cl-start))))) - seq)) + cl-seq)) ;;;###autoload (defun cl-replace (cl-seq1 cl-seq2 &rest cl-keys) @@ -337,6 +347,7 @@ This is a destructive function; it reuses the storage of SEQ whenever possible. (defun cl--delete-duplicates (cl-seq cl-keys cl-copy) (if (listp cl-seq) (cl--parsing-keywords + ;; We need to parse :if, otherwise `cl-if' is unbound. (:test :test-not :key (:start 0) :end :from-end :if) () (if cl-from-end |