;; Copyright (C) 1995,1996,1997,1998,1999 Free Software Foundation, Inc.
;; Author: MORIOKA Tomohiko <tomo@m17n.org>
+;; Shuhei KOBAYASHI <shuhei@aqua.ocn.ne.jp>
;; Keywords: emulation, compatibility
;; This file is part of APEL (A Portable Emacs Library).
;;; Commentary:
-;; Note to developers:
-;;
+;; Note to APEL developers and APEL programmers:
+;;
;; 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'. Especially, you cannot use
-;; `eval-when-compile' and `eval-and-compile' in this file.
+;; *load-time*, not compile-time. Therefore,
+;;
+;; (1) you cannot use macros defined with `defmacro-maybe' within function
+;; definitions in the same file.
+;; (`defmacro-maybe' is evaluated at load-time, therefore byte-compiler
+;; treats such use of macros as (unknown) functions and compiles them
+;; into function calls, which will cause errors at run-time.)
+;;
+;; (2) `eval-when-compile' and `eval-and-compile' are evaluated at
+;; load-time if used at top-level.
;;; Code:
-(provide 'poe-18) ; beware of circular dependency.
-(require 'poe) ; load definitions of `*-maybe'.
+(require 'pym) ; `static-*' and `def*-maybe'.
-;;; @ for EMACS 18.55
-;;;
-
-(defvar-maybe buffer-undo-list nil)
-
-
-;;; @ Emacs 19 emulation
-;;;
-
-(defvar-maybe data-directory exec-directory)
-
-
-;;; @ Lisp Language
-;;;
-
-;;; @@ 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'.
-If the first member of LIST is ELT, deleting it is not a side effect;
-it is simply using a different 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)))
- (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
+;;; @ Compilation.
;;;
(defun defalias (sym newdef)
(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]"
+ "T if OBJECT is a byte-compiled function object."
(and (consp exp)
(let ((rest (cdr (cdr exp)))
elt)
(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)
-(defalias-maybe 'inline 'progn)
+(defmacro-maybe 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."
+ (cons 'progn body))
(put 'defsubst 'lisp-indent-hook 'defun)
(put 'defsubst 'edebug-form-spec 'defun)
"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]"
+compiler does not support inlining feature."
(cons 'defun (cons name (cons arglist body))))
(defun-maybe make-obsolete (fn new)
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]"
+support this feature."
(interactive "aMake function obsolete: \nxObsoletion replacement: ")
fn)
`use instead' message.
This emulating function does nothing because old \(v18\) compiler does not
-support this feature.
-\[poe-18.el; EMACS 19 emulating function]"
+support this feature."
(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]"
+If you think you need this, you're probably making a mistake somewhere."
(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 work if used at top-level.
-Top-level macros are expanded at load-time.
-\[poe-18.el; EMACS 19 emulating macro]"
- (list 'quote (eval (cons 'progn body))))
+This emulating macro does not do compile-time evaluation at all because
+of the limitation of old \(v18\) compiler."
+ (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 work if used at top-level.
-Top-level macros are expanded at load-time.
-\[poe-18.el; EMACS 19 emulating macro]"
- ;; `form' is a parameter of `byte-compile-form'. kludge! kludge! kludge!
- ;; this kludge prevents from evaluating `body' twice when this macro is
- ;; expanded at load-time.
- (if (and (boundp 'form)
- (eq (car-safe form) 'eval-and-compile))
- (eval (cons 'progn body)))
+This emulating macro does not do compile-time evaluation at all because
+of the limitation of old \(v18\) compiler."
(cons 'progn body))
-;;; @ text property
+;;; @ Basic lisp subroutines.
;;;
-(defun set-text-properties (start end properties &optional object))
+(defmacro lambda (&rest cdr)
+ "Return a lambda expression.
+A call of the form (lambda ARGS DOCSTRING INTERACTIVE BODY) is
+self-quoting; the result of evaluating the lambda expression is the
+expression itself. The lambda expression may then be treated as a
+function, i.e., stored as the function value of a symbol, passed to
+funcall or mapcar, etc.
+
+ARGS should take the same form as an argument list for a `defun'.
+DOCSTRING is an optional documentation string.
+ If present, it should describe how to call the function.
+ But documentation strings are usually not useful in nameless functions.
+INTERACTIVE should be a call to the function `interactive', which see.
+It may also be omitted.
+BODY should be a list of lisp expressions."
+ ;; Note that this definition should not use backquotes; subr.el should not
+ ;; depend on backquote.el.
+ (list 'function (cons 'lambda cdr)))
-(defun remove-text-properties (start end properties &optional object))
+(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'.
+If the first member of LIST is ELT, deleting it is not a side effect;
+it is simply using a different list.
+Therefore, write `(setq foo (delete element foo))'
+to be sure of changing the value of `foo'."
+ (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."
+ (while (and list (not (equal elt (car list))))
+ (setq list (cdr list)))
+ list)
-;;; @ file
+(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."
+ (condition-case error
+ (progn
+ (default-value symbol)
+ t)
+ (void-variable nil)))
+
+(defun force-mode-line-update (&optional all)
+ "Force the mode-line of the current buffer to be redisplayed.
+With optional non-nil ALL, force redisplay of all mode-lines."
+ (if all (save-excursion (set-buffer (other-buffer))))
+ (set-buffer-modified-p (buffer-modified-p)))
+
+;; (defalias 'save-match-data 'store-match-data)
+
+
+;;; @ Basic editing commands.
+;;;
+
+(defvar-maybe buffer-undo-list nil)
+
+(defalias 'buffer-disable-undo 'buffer-flush-undo)
+
+(defun-maybe generate-new-buffer-name (name &optional ignore)
+ "Return a string that is the name of no existing buffer based on NAME.
+If there is no live buffer named NAME, then return NAME.
+Otherwise modify name by appending `<NUMBER>', incrementing NUMBER
+until an unused name is found, and then return that name.
+Optional second argument IGNORE specifies a name that is okay to use
+\(if it is in the sequence to be tried)
+even if a buffer with that name exists."
+ (if (get-buffer name)
+ (let ((n 2) new)
+ (while (get-buffer (setq new (format "%s<%d>" name n)))
+ (setq n (1+ n)))
+ new)
+ name))
+
+(or (fboundp 'si:mark)
+ (fset 'si:mark (symbol-function 'mark)))
+(defun mark (&optional force)
+ (si:mark))
+
+
+;;; @@ Environment variables.
;;;
+(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)
+
+
+;;; @ File input and output commands.
+;;;
+
+(defvar-maybe data-directory exec-directory)
+
+;; `call-process' does not return exit status.
+(defun file-executable-p (filename)
+ "Return t if FILENAME can be executed by you.
+For a directory, this means you can access files in that directory."
+ (if (file-exists-p filename)
+ (let ((process (start-process "test" nil "test" "-x" filename)))
+ (while (eq 'run (process-status process)))
+ (zerop (process-exit-status process)))))
+
(defun make-directory-internal (dirname)
- "Create a directory. One argument, a file name string.
-\[poe-18.el; EMACS 19 emulating function]"
+ "Create a directory. One argument, a file name string."
(let ((dir (expand-file-name dirname)))
(if (file-exists-p dir)
(error "Creating directory: %s is already exist" dir)
(defun make-directory (dir &optional parents)
"Create the directory DIR and any nonexistent parent dirs.
The second (optional) argument PARENTS says whether
-to create parent directories if they don't exist.
-\[poe-18.el; EMACS 19 emulating function]"
+to create parent directories if they don't exist."
(let ((len (length dir))
(p 0) p1 path)
(catch 'tag
(setq p p1)))
(make-directory-internal dir)))
-;; Imported from files.el of EMACS 19.33.
(defun parse-colon-path (cd-path)
"Explode a colon-separated list of paths into a string list."
(and cd-path
(setq cd-start (+ cd-colon 1)))
cd-list)))
-;; Imported from files.el of EMACS 19.33.
(defun file-relative-name (filename &optional directory)
"Convert FILENAME to be relative to DIRECTORY (default: default-directory)."
(setq filename (expand-file-name filename)
If FULL is non-nil, return absolute file names. Otherwise return names
that are relative to the specified directory.
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]"
+If NOSORT is dummy for compatibility."
(si:directory-files directory full match))
-
-;;; @ Display Features
+
+;;; @ Text property.
;;;
-;;; Imported from Emacs 19.30.
-(defun force-mode-line-update (&optional all)
- "Force the mode-line of the current buffer to be redisplayed.
-With optional non-nil ALL, force redisplay of all mode-lines.
-\[poe-18.el; Emacs 19 emulating function]"
- (if all (save-excursion (set-buffer (other-buffer))))
- (set-buffer-modified-p (buffer-modified-p)))
+;; In Emacs 20.4, these functions are defined in src/textprop.c.
+(defun text-properties-at (position &optional object))
+(defun get-text-property (position prop &optional object))
+(defun get-char-property (position prop &optional object))
+(defun next-property-change (position &optional object limit))
+(defun next-single-property-change (position prop &optional object limit))
+(defun previous-property-change (position &optional object limit))
+(defun previous-single-property-change (position prop &optional object limit))
+(defun add-text-properties (start end properties &optional object))
+(defun put-text-properties (start end property &optional object))
+(defun set-text-properties (start end properties &optional object))
+(defun remove-text-properties (start end properties &optional object))
+(defun text-property-any (start end property value &optional object))
+(defun text-property-not-all (start end property value &optional object))
+;; the following two functions are new in v20.
+(defun next-char-property-change (position &optional object))
+(defun previous-char-property-change (position &optional object))
+;; the following two functions are obsolete.
+;; (defun erase-text-properties (start end &optional object)
+;; (defun copy-text-properties (start end src pos dest &optional prop)
-;;; @ overlay
+;;; @ Overlay.
;;;
-(cond ((boundp 'NEMACS)
- (defvar emu:available-face-attribute-alist
- '(
- ;;(bold . inversed-region)
- (italic . underlined-region)
- (underline . underlined-region)
- ))
-
- ;; by YAMATE Keiichirou 1994/10/28
- (defun attribute-add-narrow-attribute (attr from to)
- (or (consp (symbol-value attr))
- (set attr (list 1)))
- (let* ((attr-value (symbol-value attr))
- (len (car attr-value))
- (posfrom 1)
- posto)
- (while (and (< posfrom len)
- (> from (nth posfrom attr-value)))
- (setq posfrom (1+ posfrom)))
- (setq posto posfrom)
- (while (and (< posto len)
- (> to (nth posto attr-value)))
- (setq posto (1+ posto)))
- (if (= posto posfrom)
- (if (= (% posto 2) 1)
- (if (and (< to len)
- (= to (nth posto attr-value)))
- (set-marker (nth posto attr-value) from)
- (setcdr (nthcdr (1- posfrom) attr-value)
- (cons (set-marker-type (set-marker (make-marker)
- from)
- 'point-type)
- (cons (set-marker-type
- (set-marker (make-marker)
- to)
- nil)
- (nthcdr posto attr-value))))
- (setcar attr-value (+ len 2))))
- (if (= (% posfrom 2) 0)
- (setq posfrom (1- posfrom))
- (set-marker (nth posfrom attr-value) from))
- (if (= (% posto 2) 0)
- nil
- (setq posto (1- posto))
- (set-marker (nth posto attr-value) to))
- (setcdr (nthcdr posfrom attr-value)
- (nthcdr posto attr-value)))))
-
- (defalias 'make-overlay 'cons)
-
- (defun overlay-put (overlay prop value)
- (let ((ret (and (eq prop 'face)
- (assq value emu:available-face-attribute-alist))))
- (if ret
- (attribute-add-narrow-attribute (cdr ret)
- (car overlay)(cdr overlay))))))
- (t
- (defun make-overlay (beg end &optional buffer type))
- (defun overlay-put (overlay prop value))))
+(cond
+ ((boundp 'NEMACS)
+ (defvar emu:available-face-attribute-alist
+ '(
+ ;;(bold . inversed-region)
+ (italic . underlined-region)
+ (underline . underlined-region)))
+
+ ;; by YAMATE Keiichirou 1994/10/28
+ (defun attribute-add-narrow-attribute (attr from to)
+ (or (consp (symbol-value attr))
+ (set attr (list 1)))
+ (let* ((attr-value (symbol-value attr))
+ (len (car attr-value))
+ (posfrom 1)
+ posto)
+ (while (and (< posfrom len)
+ (> from (nth posfrom attr-value)))
+ (setq posfrom (1+ posfrom)))
+ (setq posto posfrom)
+ (while (and (< posto len)
+ (> to (nth posto attr-value)))
+ (setq posto (1+ posto)))
+ (if (= posto posfrom)
+ (if (= (% posto 2) 1)
+ (if (and (< to len)
+ (= to (nth posto attr-value)))
+ (set-marker (nth posto attr-value) from)
+ (setcdr (nthcdr (1- posfrom) attr-value)
+ (cons (set-marker-type (set-marker (make-marker)
+ from)
+ 'point-type)
+ (cons (set-marker-type
+ (set-marker (make-marker)
+ to)
+ nil)
+ (nthcdr posto attr-value))))
+ (setcar attr-value (+ len 2))))
+ (if (= (% posfrom 2) 0)
+ (setq posfrom (1- posfrom))
+ (set-marker (nth posfrom attr-value) from))
+ (if (= (% posto 2) 0)
+ nil
+ (setq posto (1- posto))
+ (set-marker (nth posto attr-value) to))
+ (setcdr (nthcdr posfrom attr-value)
+ (nthcdr posto attr-value)))))
+
+ (defalias 'make-overlay 'cons)
+
+ (defun overlay-put (overlay prop value)
+ (let ((ret (and (eq prop 'face)
+ (assq value emu:available-face-attribute-alist))))
+ (if ret
+ (attribute-add-narrow-attribute (cdr ret)
+ (car overlay)(cdr overlay))))))
+ (t
+ (defun make-overlay (beg end &optional buffer type))
+ (defun overlay-put (overlay prop value))))
(defun overlay-buffer (overlay))
-;;; @ buffer
+;;; @ End.
;;;
-(defun-maybe generate-new-buffer-name (name &optional ignore)
- "Return a string that is the name of no existing buffer based on NAME.
-If there is no live buffer named NAME, then return NAME.
-Otherwise modify name by appending `<NUMBER>', incrementing NUMBER
-until an unused name is found, and then return that name.
-Optional second argument IGNORE specifies a name that is okay to use
-\(if it is in the sequence to be tried)
-even if a buffer with that name exists."
- (if (get-buffer name)
- (let ((n 2) new)
- (while (get-buffer (setq new (format "%s<%d>" name n)))
- (setq n (1+ n)))
- 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