diff options
Diffstat (limited to 'lisp/subr.el')
-rw-r--r-- | lisp/subr.el | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lisp/subr.el b/lisp/subr.el index 2bbc01d4533..581e52e8f9d 100644 --- a/lisp/subr.el +++ b/lisp/subr.el @@ -555,6 +555,15 @@ Elements of ALIST that are not conses are ignored." (setq tail tail-cdr)))) alist) +(defun alist-get (key alist &optional default remove) + "Get the value associated to KEY in ALIST. +DEFAULT is the value to return if KEY is not found in ALIST. +REMOVE, if non-nil, means that when setting this element, we should +remove the entry if the new value is `eql' to DEFAULT." + (ignore remove) ;;Silence byte-compiler. + (let ((x (assq key alist))) + (if x (cdr x) default))) + (defun remove (elt seq) "Return a copy of SEQ with all occurrences of ELT removed. SEQ must be a list, vector, or string. The comparison is done with `equal'." |