diff options
Diffstat (limited to 'lisp/emacs-lisp/gv.el')
| -rw-r--r-- | lisp/emacs-lisp/gv.el | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lisp/emacs-lisp/gv.el b/lisp/emacs-lisp/gv.el index 78d86b9fc31..5470b8532fc 100644 --- a/lisp/emacs-lisp/gv.el +++ b/lisp/emacs-lisp/gv.el @@ -417,6 +417,17 @@ The return value is the last VAL in the list. `(delq ,p ,getter)))))) ,v)))))))))) +(gv-define-expander plist-get + (lambda (do plist prop) + (macroexp-let2 macroexp-copyable-p key prop + (gv-letplace (getter setter) plist + (macroexp-let2 nil p `(cdr (plist-member ,getter ,key)) + (funcall do + `(car ,p) + (lambda (val) + `(if ,p + (setcar ,p ,val) + ,(funcall setter `(cons ,key (cons ,val ,getter))))))))))) ;;; Some occasionally handy extensions. |