;;; poe-18.el --- poe API implementation for Emacs 18.*
-;; Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
+;; Copyright (C) 1995,1996,1997,1998,1999 Free Software Foundation, Inc.
-;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;; Author: MORIOKA Tomohiko <tomo@m17n.org>
;; Keywords: emulation, compatibility
;; This file is part of APEL (A Portable Emacs Library).
;; General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to the
+;; along with this program; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
-;;; Code:
+;;; Commentary:
-(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)
+;; Note to developers:
+;;
+;; If old (v18) compiler is used, top-level macros are expanded at
+;; *load-time*, not compile-time. So, you cannot use macros defined
+;; in this file using `defmacro-maybe'. In addition, due to this
+;; limitation, `eval-when-compile' and `eval-and-compile' provided by
+;; this file do not do compile-time evaluation at all.
-(defvar data-directory exec-directory)
+;;; Code:
+(provide 'poe-18) ; beware of circular dependency.
+(require 'poe) ; load definitions of `*-maybe'.
;;; @ for EMACS 18.55
;;;
-(defvar buffer-undo-list nil)
+(defvar-maybe buffer-undo-list nil)
-;;; @ hook
+;;; @ Emacs 19 emulation
;;;
-;; 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
+(defvar-maybe data-directory exec-directory)
+
+
+;;; @ Lisp Language
;;;
-(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)
+;;; @@ list
+;;;
(defun delete (elt list)
"Delete by side effect any occurrences of ELT as a member of LIST.
Therefore, write `(setq foo (delete element foo))'
to be sure of changing the value of `foo'.
\[poe-18.el; EMACS 19 emulating function]"
- (if (equal elt (car list))
- (cdr list)
- (let ((rest list)
- (rrest (cdr list))
- )
- (while (and rrest (not (equal elt (car rrest))))
- (setq rest rrest
- rrest (cdr rrest))
- )
- (rplacd rest (cdr rrest))
- list)))
-
-
-;;; @ function
+ (if list
+ (if (equal elt (car list))
+ (cdr list)
+ (let ((rest list)
+ (rrest (cdr list)))
+ (while (and rrest (not (equal elt (car rrest))))
+ (setq rest rrest
+ rrest (cdr rrest)))
+ (setcdr 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)
+
+
+;;; @@ buffer-local variable
+;;;
+
+(defun default-boundp (symbol)
+ "Return t if SYMBOL has a non-void default value.
+This is the value that is seen in buffers that do not have their own values
+for this variable.
+\[poe-18.el; EMACS 19 emulating function]"
+ (condition-case error
+ (progn
+ (default-value symbol)
+ t)
+ (void-variable nil)))
+
+
+;;; @@ 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)
"Set SYMBOL's function definition to NEWVAL, and return NEWVAL.
-Associates the function with the current load file, if any.
-\[poe-18.el; EMACS 19 emulating function]"
- (fset sym newdef)
- )
+Associates the function with the current load file, if any."
+ (fset sym newdef))
(defun byte-code-function-p (exp)
"T if OBJECT is a byte-compiled function object.
\[poe-18.el; EMACS 19 emulating function]"
(and (consp exp)
- (let* ((rest (cdr (cdr exp))) elt)
+ (let ((rest (cdr (cdr exp)))
+ elt)
(if (stringp (car rest))
- (setq rest (cdr rest))
- )
+ (setq rest (cdr rest)))
(catch 'tag
(while rest
(setq elt (car rest))
- (if (and (consp elt)(eq (car elt) 'byte-code))
- (throw 'tag t)
- )
- (setq rest (cdr rest))
- ))
- )))
+ (if (and (consp elt)
+ (eq (car elt) 'byte-code))
+ (throw 'tag t))
+ (setq rest (cdr rest)))))))
+
+;;; @ Compilation Features
+;;;
+
+;;; emulate all functions and macros of emacs-20.3/lisp/byte-run.el.
+;;; (note: jwz's original compiler and XEmacs compiler have some more
+;;; macros; they are "nuked" by rms in FSF version.)
+
+(put 'inline 'lisp-indent-hook 0)
+(defmacro inline (&rest body)
+ "Eval BODY forms sequentially and return value of last one.
+
+This emulating macro does not support function inlining because old \(v18\)
+compiler does not support inlining feature.
+\[poe-18.el; EMACS 19 emulating macro]"
+ (` (progn (,@ body))))
+
+(put 'defsubst 'lisp-indent-hook 'defun)
+(put 'defsubst 'edebug-form-spec 'defun)
(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)))
- )
+ "Define an inline function. The syntax is just like that of `defun'.
+
+This emulating macro does not support function inlining because old \(v18\)
+compiler does not support inlining feature.
+\[poe-18.el; EMACS 19 emulating macro]"
+ (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.
-If NEW is a string, that is the `use instead' message."
+If NEW is a string, that is the `use instead' message.
+
+This emulating function does nothing because old \(v18\) compiler does not
+support this feature.
+\[poe-18.el; EMACS 19 emulating function]"
(interactive "aMake function obsolete: \nxObsoletion replacement: ")
- (let ((handler (get fn 'byte-compile)))
- (if (eq 'byte-compile-obsolete handler)
- (setcar (get fn 'byte-obsolete-info) new)
- (put fn 'byte-obsolete-info (cons new handler))
- (put fn 'byte-compile 'byte-compile-obsolete)))
fn)
+(defun-maybe make-obsolete-variable (var new)
+ "Make the byte-compiler warn that VARIABLE is obsolete,
+and NEW should be used instead. If NEW is a string, then that is the
+`use instead' message.
+
+This emulating function does nothing because old \(v18\) compiler does not
+support this feature.
+\[poe-18.el; EMACS 19 emulating function]"
+ (interactive "vMake variable obsolete: \nxObsoletion replacement: ")
+ var)
+
+(put 'dont-compile 'lisp-indent-hook 0)
+(defmacro-maybe dont-compile (&rest body)
+ "Like `progn', but the body always runs interpreted \(not compiled\).
+If you think you need this, you're probably making a mistake somewhere.
+\[poe-18.el; EMACS 19 emulating macro]"
+ (list 'eval (list 'quote (if (cdr body) (cons 'progn body) (car body)))))
+
+(put 'eval-when-compile 'lisp-indent-hook 0)
+(defmacro-maybe eval-when-compile (&rest body)
+ "Like progn, but evaluates the body at compile-time.
+
+This emulating macro does not do compile-time evaluation at all because
+of the limitation of old \(v18\) compiler.
+\[poe-18.el; EMACS 19 emulating macro]"
+ (cons 'progn body))
+
+(put 'eval-and-compile 'lisp-indent-hook 0)
+(defmacro-maybe eval-and-compile (&rest body)
+ "Like progn, but evaluates the body at compile-time as well as at load-time.
+
+This emulating macro does not do compile-time evaluation at all because
+of the limitation of old \(v18\) compiler.
+\[poe-18.el; EMACS 19 emulating macro]"
+ (cons 'progn body))
+
+
+;;; @ text property
+;;;
+
+(defun set-text-properties (start end properties &optional object))
+
+(defun remove-text-properties (start end properties &optional object))
+
;;; @ file
;;;
(defun make-directory-internal (dirname)
"Create a directory. One argument, a file name string.
\[poe-18.el; EMACS 19 emulating function]"
- (if (file-exists-p dirname)
- (error "Creating directory: %s is already exist" dirname)
- (if (not (= (call-process "mkdir" nil nil nil dirname) 0))
- (error "Creating directory: no such file or directory, %s" dirname)
- )))
+ (let ((dir (expand-file-name dirname)))
+ (if (file-exists-p dir)
+ (error "Creating directory: %s is already exist" dir)
+ (call-process "mkdir" nil nil nil dir))))
(defun make-directory (dir &optional parents)
"Create the directory DIR and any nonexistent parent dirs.
(while (and (< p len) (string-match "[^/]*/?" dir p))
(setq p1 (match-end 0))
(if (= p1 len)
- (throw 'tag nil)
- )
+ (throw 'tag nil))
(setq path (substring dir 0 p1))
(if (not (file-directory-p path))
(cond ((file-exists-p path)
- (error "Creating directory: %s is not directory" path)
- )
+ (error "Creating directory: %s is not directory" path))
((null parents)
- (error "Creating directory: %s is not exist" path)
- )
+ (error "Creating directory: %s is not exist" path))
(t
- (make-directory-internal path)
- ))
- )
- (setq p p1)
- ))
- (make-directory-internal dir)
- ))
+ (make-directory-internal path))))
+ (setq p p1)))
+ (make-directory-internal dir)))
;; Imported from files.el of EMACS 19.33.
(defun parse-colon-path (cd-path)
(setq cd-list
(nconc cd-list
(list (if (= cd-start cd-colon)
- nil
+ nil
(substitute-in-file-name
(file-name-as-directory
(substring cd-path cd-start cd-colon)))))))
If MATCH is non-nil, mention only file names that match the regexp MATCH.
If NOSORT is dummy for compatibility.
\[poe-18.el; EMACS 19 emulating function]"
- (si:directory-files directory full match)
- )
+ (si:directory-files directory full match))
-;;; @ 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-put (overlay prop value)
(let ((ret (and (eq prop 'face)
- (assq value emu:available-face-attribute-alist)
- )))
+ (assq value emu:available-face-attribute-alist))))
(if ret
(attribute-add-narrow-attribute (cdr ret)
- (car overlay)(cdr overlay))
- )))
- )
+ (car overlay)(cdr overlay))))))
(t
(defun make-overlay (beg end &optional buffer type))
- (defun overlay-put (overlay prop value))
- ))
+ (defun overlay-put (overlay prop value))))
(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)
- ))
-
-
;;; @ buffer
;;;
new)
name))
+(or (fboundp 'si:mark)
+ (fset 'si:mark (symbol-function 'mark)))
+(defun mark (&optional force)
+ (si:mark))
+
;;; @ end
;;;
-(provide 'poe-18)
-
;;; poe-18.el ends here
projects / elisp / apel.git / blobdiff