From 861a2939aaec185c358e162314d7d3309752b65e Mon Sep 17 00:00:00 2001 From: shuhei-k Date: Mon, 5 Apr 1999 14:15:03 +0000 Subject: [PATCH] (add-hook, remove-hook): Moved to poe.el. --- poe-18.el | 59 ----------------------------------------------------------- 1 file changed, 59 deletions(-) diff --git a/poe-18.el b/poe-18.el index 60ef79b..3e12b28 100644 --- a/poe-18.el +++ b/poe-18.el @@ -328,65 +328,6 @@ even if a buffer with that name exists." ) -;;; @ hook -;;; - -;; These function are imported from EMACS 19.28. -(defun add-hook (hook function &optional append) - "Add to the value of HOOK the function FUNCTION. -FUNCTION is not added if already present. -FUNCTION is added (if necessary) at the beginning of the hook list -unless the optional argument APPEND is non-nil, in which case -FUNCTION is added at the end. - -HOOK should be a symbol, and FUNCTION may be any valid function. If -HOOK is void, it is first set to nil. If HOOK's value is a single -function, it is changed to a list of functions. -\[poe-18.el; EMACS 19 emulating function]" - (or (boundp hook) - (set hook nil) - ) - ;; If the hook value is a single function, turn it into a list. - (let ((old (symbol-value hook))) - (if (or (not (listp old)) - (eq (car old) 'lambda)) - (set hook (list old)) - )) - (or (if (consp function) - ;; Clever way to tell whether a given lambda-expression - ;; is equal to anything in the hook. - (let ((tail (assoc (cdr function) (symbol-value hook)))) - (equal function tail) - ) - (memq function (symbol-value hook)) - ) - (set hook - (if append - (nconc (symbol-value hook) (list function)) - (cons function (symbol-value hook)) - )) - )) - -(defun remove-hook (hook function) - "Remove from the value of HOOK the function FUNCTION. -HOOK should be a symbol, and FUNCTION may be any valid function. If -FUNCTION isn't the value of HOOK, or, if FUNCTION doesn't appear in the -list of hooks to run in HOOK, then nothing is done. See `add-hook'. -\[poe-18.el; EMACS 19 emulating function]" - (if (or (not (boundp hook)) ;unbound symbol, or - (null (symbol-value hook)) ;value is nil, or - (null function)) ;function is nil, then - nil ;Do nothing. - (let ((hook-value (symbol-value hook))) - (if (consp hook-value) - (setq hook-value (delete function hook-value)) - (if (equal hook-value function) - (setq hook-value nil) - )) - (set hook hook-value) - ))) - - ;;; @ end ;;; -- 1.7.10.4