;;; Code:
-(autoload 'setenv "env"
- "Set the value of the environment variable named VARIABLE to VALUE.
-VARIABLE should be a string. VALUE is optional; if not provided or is
-`nil', the environment variable VARIABLE will be removed.
-This function works by modifying `process-environment'."
- t)
-
-(defvar data-directory exec-directory)
+(defvar-maybe data-directory exec-directory)
;;; @ for EMACS 18.55
;;;
-(defvar buffer-undo-list nil)
+(defvar-maybe buffer-undo-list nil)
-;;; @ hook
+;;; @ Lisp Language
;;;
-;; 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)
- )))
-
-
-;;; @ list
+;;; @@ list
;;;
-(defun member (elt list)
- "Return non-nil if ELT is an element of LIST. Comparison done with EQUAL.
-The value is actually the tail of LIST whose car is ELT.
-\[poe-18.el; EMACS 19 emulating function]"
- (while (and list (not (equal elt (car list))))
- (setq list (cdr list)))
- list)
-
(defun delete (elt list)
"Delete by side effect any occurrences of ELT as a member of LIST.
The modified LIST is returned. Comparison is done with `equal'.
(rplacd rest (cdr rrest))
list)))
+(defun member (elt list)
+ "Return non-nil if ELT is an element of LIST. Comparison done with EQUAL.
+The value is actually the tail of LIST whose car is ELT.
+\[poe-18.el; EMACS 19 emulating function]"
+ (while (and list (not (equal elt (car list))))
+ (setq list (cdr list)))
+ list)
+
-;;; @ function
+;;; @@ environment variable
+;;;
+
+(autoload 'setenv "env"
+ "Set the value of the environment variable named VARIABLE to VALUE.
+VARIABLE should be a string. VALUE is optional; if not provided or is
+`nil', the environment variable VARIABLE will be removed.
+This function works by modifying `process-environment'."
+ t)
+
+
+;;; @@ function
;;;
(defun defalias (sym newdef)
(fset sym newdef)
)
+
+;;; @ Compilation Features
+;;;
+
+(defmacro-maybe defsubst (name arglist &rest body)
+ "Define an inline function. The syntax is just like that of `defun'."
+ (cons 'defun (cons name (cons arglist body)))
+ )
+
+(defmacro-maybe eval-and-compile (&rest body)
+ "Like `progn', but evaluates the body at compile time and at load time."
+ ;; Remember, it's magic.
+ (cons 'progn body))
+
(defun byte-code-function-p (exp)
"T if OBJECT is a byte-compiled function object.
\[poe-18.el; EMACS 19 emulating function]"
))
)))
-(defmacro-maybe defsubst (name arglist &rest body)
- "Define an inline function. The syntax is just like that of `defun'."
- (cons 'defun (cons name (cons arglist body)))
- )
-
(defun-maybe make-obsolete (fn new)
"Make the byte-compiler warn that FUNCTION is obsolete.
The warning will say that NEW should be used instead.
fn)
+;;; @ text property
+;;;
+
+(defun set-text-properties (start end properties &optional object))
+
+(defun remove-text-properties (start end properties &optional object))
+
+
;;; @ file
;;;
)
-;;; @ mark
-;;;
-
-(or (fboundp 'si:mark)
- (fset 'si:mark (symbol-function 'mark)))
-(defun mark (&optional force)
- (si:mark)
- )
-
-
-;;; @ mode-line
+;;; @ Display Features
;;;
;;; Imported from Emacs 19.30.
(defun overlay-buffer (overlay))
-;;; @ text property
-;;;
-
-(defun set-text-properties (start end properties &optional object))
-
-(defun remove-text-properties (start end properties &optional object))
-
-
-;;; @@ visible/invisible
-;;;
-
-(defmacro enable-invisible ()
- (`
- (progn
- (make-local-variable 'original-selective-display)
- (setq original-selective-display selective-display)
- (setq selective-display t)
- )))
-
-(defmacro end-of-invisible ()
- (` (setq selective-display
- (if (boundp 'original-selective-display)
- original-selective-display))
- ))
-
-(defun invisible-region (start end)
- (let ((buffer-read-only nil) ;Okay even if write protected.
- (modp (buffer-modified-p)))
- (if (save-excursion
- (goto-char (1- end))
- (eq (following-char) ?\n)
- )
- (setq end (1- end))
- )
- (unwind-protect
- (subst-char-in-region start end ?\n ?\^M t)
- (set-buffer-modified-p modp)
- )))
-
-(defun visible-region (start end)
- (let ((buffer-read-only nil) ;Okay even if write protected.
- (modp (buffer-modified-p)))
- (unwind-protect
- (subst-char-in-region start end ?\^M ?\n t)
- (set-buffer-modified-p modp)
- )))
-
-(defun invisible-p (pos)
- (save-excursion
- (goto-char pos)
- (eq (following-char) ?\^M)
- ))
-
-(defun next-visible-point (pos)
- (save-excursion
- (goto-char pos)
- (end-of-line)
- (if (eq (following-char) ?\n)
- (forward-char)
- )
- (point)
- ))
-
-
-;;; @ string
-;;;
-
-(defun char-list-to-string (char-list)
- "Convert list of character CHAR-LIST to string. [poe-18.el]"
- (mapconcat (function char-to-string) char-list "")
- )
-
-
;;; @ buffer
;;;
new)
name))
+(or (fboundp 'si:mark)
+ (fset 'si:mark (symbol-function 'mark)))
+(defun mark (&optional force)
+ (si:mark)
+ )
+
+
+;;; @ 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
;;;
projects / elisp / apel.git / blobdiff