1 ;;; poe-18.el --- poe API implementation for Emacs 18.*
3 ;; Copyright (C) 1995,1996,1997,1998,1999 Free Software Foundation, Inc.
4 ;; Copyright (C) 1999 Yuuichi Teranishi
6 ;; Author: MORIOKA Tomohiko <tomo@m17n.org>
7 ;; Shuhei KOBAYASHI <shuhei@aqua.ocn.ne.jp>
8 ;; Yuuichi Teranishi <teranisi@gohome.org>
9 ;; Keywords: emulation, compatibility
11 ;; This file is part of APEL (A Portable Emacs Library).
13 ;; This program is free software; you can redistribute it and/or
14 ;; modify it under the terms of the GNU General Public License as
15 ;; published by the Free Software Foundation; either version 2, or (at
16 ;; your option) any later version.
18 ;; This program is distributed in the hope that it will be useful, but
19 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 ;; General Public License for more details.
23 ;; You should have received a copy of the GNU General Public License
24 ;; along with this program; see the file COPYING. If not, write to the
25 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
26 ;; Boston, MA 02111-1307, USA.
30 ;; Note to APEL developers and APEL programmers:
32 ;; If old (v18) compiler is used, top-level macros are expanded at
33 ;; *load-time*, not compile-time. Therefore,
35 ;; (1) Definitions with `*-maybe' won't be compiled.
37 ;; (2) you cannot use macros defined with `defmacro-maybe' within function
38 ;; definitions in the same file.
39 ;; (`defmacro-maybe' is evaluated at load-time, therefore byte-compiler
40 ;; treats such use of macros as (unknown) functions and compiles them
41 ;; into function calls, which will cause errors at run-time.)
43 ;; (3) `eval-when-compile' and `eval-and-compile' are evaluated at
44 ;; load-time if used at top-level.
54 (defun defalias (sym newdef)
55 "Set SYMBOL's function definition to NEWVAL, and return NEWVAL."
58 (defun byte-code-function-p (object)
59 "Return t if OBJECT is a byte-compiled function object."
60 (and (consp object) (consp (cdr object))
61 (let ((rest (cdr (cdr object)))
63 (if (stringp (car rest))
64 (setq rest (cdr rest)))
69 (eq (car elt) 'byte-code))
71 (setq rest (cdr rest)))))))
73 ;; (symbol-plist 'cyclic-function-indirection)
74 (put 'cyclic-function-indirection
76 '(cyclic-function-indirection error))
77 (put 'cyclic-function-indirection
79 "Symbol's chain of function indirections contains a loop")
81 ;; The following function definition is a direct translation of its
82 ;; C definition in emacs-20.4/src/data.c.
83 (defun indirect-function (object)
84 "Return the function at the end of OBJECT's function chain.
85 If OBJECT is a symbol, follow all function indirections and return the final
87 If OBJECT is not a symbol, just return it.
88 Signal a void-function error if the final symbol is unbound.
89 Signal a cyclic-function-indirection error if there is a loop in the
90 function chain of symbols."
95 (or (symbolp hare) (throw 'found hare))
96 (or (fboundp hare) (signal 'void-function (cons object nil)))
97 (setq hare (symbol-function hare))
98 (or (symbolp hare) (throw 'found hare))
99 (or (fboundp hare) (signal 'void-function (cons object nil)))
100 (setq hare (symbol-function hare))
102 (setq tortoise (symbol-function tortoise))
104 (if (eq hare tortoise)
105 (signal 'cyclic-function-indirection (cons object nil)))))
108 ;;; Emulate all functions and macros of emacs-20.3/lisp/byte-run.el.
109 ;;; (note: jwz's original compiler and XEmacs compiler have some more
110 ;;; macros; they are "nuked" by rms in FSF version.)
112 ;; Use `*-maybe' here because new byte-compiler may be installed.
113 (put 'inline 'lisp-indent-hook 0)
114 (defmacro-maybe inline (&rest body)
115 "Eval BODY forms sequentially and return value of last one.
117 This emulating macro does not support function inlining because old \(v18\)
118 compiler does not support inlining feature."
121 (put 'defsubst 'lisp-indent-hook 'defun)
122 (put 'defsubst 'edebug-form-spec 'defun)
123 (defmacro-maybe defsubst (name arglist &rest body)
124 "Define an inline function. The syntax is just like that of `defun'.
126 This emulating macro does not support function inlining because old \(v18\)
127 compiler does not support inlining feature."
128 (cons 'defun (cons name (cons arglist body))))
130 (defun-maybe make-obsolete (fn new)
131 "Make the byte-compiler warn that FUNCTION is obsolete.
132 The warning will say that NEW should be used instead.
133 If NEW is a string, that is the `use instead' message.
135 This emulating function does nothing because old \(v18\) compiler does not
136 support this feature."
137 (interactive "aMake function obsolete: \nxObsoletion replacement: ")
140 (defun-maybe make-obsolete-variable (var new)
141 "Make the byte-compiler warn that VARIABLE is obsolete,
142 and NEW should be used instead. If NEW is a string, then that is the
143 `use instead' message.
145 This emulating function does nothing because old \(v18\) compiler does not
146 support this feature."
147 (interactive "vMake variable obsolete: \nxObsoletion replacement: ")
150 (put 'dont-compile 'lisp-indent-hook 0)
151 (defmacro-maybe dont-compile (&rest body)
152 "Like `progn', but the body always runs interpreted \(not compiled\).
153 If you think you need this, you're probably making a mistake somewhere."
154 (list 'eval (list 'quote (if (cdr body) (cons 'progn body) (car body)))))
156 (put 'eval-when-compile 'lisp-indent-hook 0)
157 (defmacro-maybe eval-when-compile (&rest body)
158 "Like progn, but evaluates the body at compile-time.
160 This emulating macro does not do compile-time evaluation at all because
161 of the limitation of old \(v18\) compiler."
164 (put 'eval-and-compile 'lisp-indent-hook 0)
165 (defmacro-maybe eval-and-compile (&rest body)
166 "Like progn, but evaluates the body at compile-time as well as at load-time.
168 This emulating macro does not do compile-time evaluation at all because
169 of the limitation of old \(v18\) compiler."
173 ;;; @ C primitives emulation.
176 (defun member (elt list)
177 "Return non-nil if ELT is an element of LIST. Comparison done with EQUAL.
178 The value is actually the tail of LIST whose car is ELT."
179 (while (and list (not (equal elt (car list))))
180 (setq list (cdr list)))
183 (defun delete (elt list)
184 "Delete by side effect any occurrences of ELT as a member of LIST.
185 The modified LIST is returned. Comparison is done with `equal'.
186 If the first member of LIST is ELT, deleting it is not a side effect;
187 it is simply using a different list.
188 Therefore, write `(setq foo (delete element foo))'
189 to be sure of changing the value of `foo'."
191 (if (equal elt (car list))
195 (while (and rrest (not (equal elt (car rrest))))
198 (setcdr rest (cdr rrest))
201 (defun default-boundp (symbol)
202 "Return t if SYMBOL has a non-void default value.
203 This is the value that is seen in buffers that do not have their own values
205 (condition-case error
207 (default-value symbol)
209 (void-variable nil)))
214 (defvar current-time-world-timezones
215 '(("PST" . -800)("PDT" . -700)("MST" . -700)
216 ("MDT" . -600)("CST" . -600)("CDT" . -500)
217 ("EST" . -500)("EDT" . -400)("AST" . -400)
218 ("NST" . -330)("UT" . +000)("GMT" . +000)
219 ("BST" . +100)("MET" . +100)("EET" . +200)
220 ("JST" . +900)("GMT+1" . +100)("GMT+2" . +200)
221 ("GMT+3" . +300)("GMT+4" . +400)("GMT+5" . +500)
222 ("GMT+6" . +600)("GMT+7" . +700)("GMT+8" . +800)
223 ("GMT+9" . +900)("GMT+10" . +1000)("GMT+11" . +1100)
224 ("GMT+12" . +1200)("GMT+13" . +1300)("GMT-1" . -100)
225 ("GMT-2" . -200)("GMT-3" . -300)("GMT-4" . -400)
226 ("GMT-5" . -500)("GMT-6" . -600)("GMT-7" . -700)
227 ("GMT-8" . -800)("GMT-9" . -900)("GMT-10" . -1000)
228 ("GMT-11" . -1100) ("GMT-12" . -1200))
229 "Time differentials of timezone from GMT in +-HHMM form.
230 Used in `current-time-zone'.")
232 (defvar current-time-local-timezone nil
233 "*Local timezone name.
234 Used in `current-time-zone'.")
236 (defun set-time-zone-rule (tz)
237 "Set the local time zone using TZ, a string specifying a time zone rule.
238 If TZ is nil, use implementation-defined default time zone information.
239 If TZ is t, use Universal Time."
242 (setq current-time-local-timezone tz))
244 (setq current-time-local-timezone "GMT"))
246 (setq current-time-local-timezone
248 ;; We use `date' command to get timezone information.
249 (call-process "date" nil (current-buffer) t)
250 (goto-char (point-min))
252 "^.*\\([A-Z][A-Z][A-Z]\\([^ \n\t]*\\)\\).*$")
253 (buffer-substring (match-beginning 1)
256 (defun current-time-zone (&optional specified-time)
257 "Return the offset and name for the local time zone.
258 This returns a list of the form (OFFSET NAME).
259 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).
260 A negative value means west of Greenwich.
261 NAME is a string giving the name of the time zone.
262 Optional argument SPECIFIED-TIME is ignored in this implementation.
263 Some operating systems cannot provide all this information to Emacs;
264 in this case, `current-time-zone' returns a list containing nil for
265 the data it can't find."
266 (let ((local-timezone (or current-time-local-timezone
268 (set-time-zone-rule nil)
269 current-time-local-timezone)))
270 timezone abszone seconds)
272 (or (cdr (assoc (upcase local-timezone)
273 current-time-world-timezones))
274 ;; "+900" style or nil.
277 (if (stringp timezone)
278 (setq timezone (string-to-int timezone)))
279 ;; Taking account of minute in timezone.
281 (setq abszone (abs timezone))
282 (setq seconds (* 60 (+ (* 60 (/ abszone 100)) (% abszone 100))))
283 (list (if (< timezone 0) (- seconds) seconds)
286 (or (fboundp 'si:current-time-string)
287 (fset 'si:current-time-string (symbol-function 'current-time-string)))
288 (defun current-time-string (&optional specified-time)
289 "Return the current time, as a human-readable string.
290 Programs can use this function to decode a time,
291 since the number of columns in each field is fixed.
292 The format is `Sun Sep 16 01:03:52 1973'.
293 If an argument SPECIFIED-TIME is given, it specifies a time to format
294 instead of the current time. The argument should have the form:
297 (HIGH LOW . IGNORED).
298 Thus, you can use times obtained from `current-time'
299 and from `file-attributes'."
300 (if (null specified-time)
301 (si:current-time-string)
302 (or (consp specified-time)
303 (error "Wrong type argument %s" specified-time))
304 (let ((high (car specified-time))
305 (low (cdr specified-time))
306 (offset (or (car (current-time-zone)) 0))
307 (mdays '(31 28 31 30 31 30 31 31 30 31 30 31))
308 (mnames '("Jan" "Feb" "Mar" "Apr" "May" "Jun"
309 "Jul" "Aug" "Sep" "Oct" "Nov" "Dec"))
310 (wnames '("Sun" "Mon" "Tue" "Wed" "Thu" "Fri" "Sat"))
311 days dd yyyy lyear mm HH MM SS)
313 (setq low (car low)))
315 (error "Wrong type argument %s" high))
317 (error "Wrong type argument %s" low))
318 (setq low (+ low offset))
323 (while (or (> high 481)
330 (setq high (- high 481)
332 (if (and (zerop (% yyyy 4))
333 (or (not (zerop (% yyyy 100)))
334 (zerop (% yyyy 400))))
340 (setq high (- high 1)
342 (setq yyyy (1+ yyyy)))
344 (while (or (> high 1)
351 (setq high (- high 1)
356 (setq low (+ 65536 low)))
358 (setq lyear (and (zerop (% yyyy 4))
359 (or (not (zerop (% yyyy 100)))
360 (zerop (% yyyy 400)))))
361 (while (> (- dd (if (and lyear (= mm 1)) 29 (nth mm mdays))) 0)
362 (setq dd (- dd (if (and lyear (= mm 1)) 29 (nth mm mdays))))
364 (setq HH (/ low 3600)
368 (format "%s %s %2d %02d:%02d:%02d %4d"
370 (- (+ (* (1- yyyy) 365) (/ (1- yyyy) 400)
371 (/ (1- yyyy) 4)) (/ (1- yyyy) 100))) 7)
376 (defun current-time ()
377 "Return the current time, as the number of seconds since 1970-01-01 00:00:00.
378 The time is returned as a list of three integers. The first has the
379 most significant 16 bits of the seconds, while the second has the
380 least significant 16 bits. The third integer gives the microsecond
383 The microsecond count is zero on systems that do not provide
384 resolution finer than a second."
385 (let* ((str (current-time-string))
386 (yyyy (string-to-int (substring str 20 24)))
387 (mm (length (member (substring str 4 7)
388 '("Dec" "Nov" "Oct" "Sep" "Aug" "Jul"
389 "Jun" "May" "Apr" "Mar" "Feb" "Jan"))))
390 (dd (string-to-int (substring str 8 10)))
391 (HH (string-to-int (substring str 11 13)))
392 (MM (string-to-int (substring str 14 16)))
393 (SS (string-to-int (substring str 17 19)))
394 (offset (or (car (current-time-zone)) 0))
397 (setq ct1 0 ct2 0 i1 0 i2 0)
398 (setq year (- yyyy 1970))
406 (setq year (- yyyy 1))
407 (setq uru (- (+ (- (/ year 4) (/ year 100))
421 (setq dn (+ dd (* 31 (1- mm))))
423 (setq dn (+ (- dn (/ (+ 23 (* 4 mm)) 10))
424 (if (and (zerop (% yyyy 4))
425 (or (not (zerop (% yyyy 100)))
426 (zerop (% yyyy 400))))
438 (setq ct1 (+ (+ (+ ct1 i1) (/ ct2 65536))
439 (/ (+ (* HH 3600) (* MM 60) SS)
441 ct2 (+ (+ i2 (% ct2 65536))
442 (% (+ (* HH 3600) (* MM 60) SS)
444 (while (< (- ct2 offset) 0)
447 (setq ct2 (- ct2 offset))
453 ;;; @@ Floating point numbers.
457 "Return the absolute value of ARG."
458 (if (< arg 0) (- arg) arg))
460 (defun floor (arg &optional divisor)
461 "Return the largest integer no grater than ARG.
462 With optional DIVISOR, return the largest integer no greater than ARG/DIVISOR."
466 (- (/ (- divisor 1 arg) divisor))
469 ;;; @ Basic lisp subroutines.
472 (defmacro lambda (&rest cdr)
473 "Return a lambda expression.
474 A call of the form (lambda ARGS DOCSTRING INTERACTIVE BODY) is
475 self-quoting; the result of evaluating the lambda expression is the
476 expression itself. The lambda expression may then be treated as a
477 function, i.e., stored as the function value of a symbol, passed to
478 funcall or mapcar, etc.
480 ARGS should take the same form as an argument list for a `defun'.
481 DOCSTRING is an optional documentation string.
482 If present, it should describe how to call the function.
483 But documentation strings are usually not useful in nameless functions.
484 INTERACTIVE should be a call to the function `interactive', which see.
485 It may also be omitted.
486 BODY should be a list of lisp expressions."
487 ;; Note that this definition should not use backquotes; subr.el should not
488 ;; depend on backquote.el.
489 (list 'function (cons 'lambda cdr)))
491 (defun force-mode-line-update (&optional all)
492 "Force the mode-line of the current buffer to be redisplayed.
493 With optional non-nil ALL, force redisplay of all mode-lines."
494 (if all (save-excursion (set-buffer (other-buffer))))
495 (set-buffer-modified-p (buffer-modified-p)))
497 (defalias 'set-match-data 'store-match-data)
499 (defvar save-match-data-internal)
501 ;; We use save-match-data-internal as the local variable because
502 ;; that works ok in practice (people should not use that variable elsewhere).
503 (defmacro save-match-data (&rest body)
504 "Execute the BODY forms, restoring the global value of the match data."
505 (` (let ((save-match-data-internal (match-data)))
506 (unwind-protect (progn (,@ body))
507 (set-match-data save-match-data-internal)))))
510 ;;; @ Basic editing commands.
513 ;; 18.55 does not have these variables.
514 (defvar buffer-undo-list nil
515 "List of undo entries in current buffer.
516 APEL provides this as dummy for a compatibility.")
518 (defvar auto-fill-function nil
519 "Function called (if non-nil) to perform auto-fill.
520 APEL provides this as dummy for a compatibility.")
522 (defvar unread-command-event nil
523 "APEL provides this as dummy for a compatibility.")
524 (defvar unread-command-events nil
525 "List of events to be read as the command input.
526 APEL provides this as dummy for a compatibility.")
528 ;; (defvar minibuffer-setup-hook nil
529 ;; "Normal hook run just after entry to minibuffer.")
530 ;; (defvar minibuffer-exit-hook nil
531 ;; "Normal hook run just after exit from minibuffer.")
533 (defvar minor-mode-map-alist nil
534 "Alist of keymaps to use for minor modes.
535 APEL provides this as dummy for a compatibility.")
537 (defalias 'insert-and-inherit 'insert)
538 (defalias 'insert-before-markers-and-inherit 'insert-before-markers)
539 (defalias 'number-to-string 'int-to-string)
541 (defun generate-new-buffer-name (name &optional ignore)
542 "Return a string that is the name of no existing buffer based on NAME.
543 If there is no live buffer named NAME, then return NAME.
544 Otherwise modify name by appending `<NUMBER>', incrementing NUMBER
545 until an unused name is found, and then return that name.
546 Optional second argument IGNORE specifies a name that is okay to use
547 \(if it is in the sequence to be tried\)
548 even if a buffer with that name exists."
549 (if (get-buffer name)
551 (while (get-buffer (setq new (format "%s<%d>" name n)))
556 (or (fboundp 'si:mark)
557 (fset 'si:mark (symbol-function 'mark)))
558 (defun mark (&optional force)
561 (defun window-minibuffer-p (&optional window)
562 "Return non-nil if WINDOW is a minibuffer window."
563 (eq (or window (selected-window)) (minibuffer-window)))
565 (defun window-live-p (object)
566 "Returns t if OBJECT is a window which is currently visible."
567 (and (windowp object)
568 (or (eq object (minibuffer-window))
569 (eq object (get-buffer-window (window-buffer object))))))
571 ;; Add optinal argument `hist'
572 (or (fboundp 'si:read-from-minibuffer)
574 (fset 'si:read-from-minibuffer (symbol-function 'read-from-minibuffer))
575 (defun read-from-minibuffer (prompt &optional
576 initial-contents keymap read hist)
578 "Read a string from the minibuffer, prompting with string PROMPT.
579 If optional second arg INITIAL-CONTENTS is non-nil, it is a string
580 to be inserted into the minibuffer before reading input.
581 If INITIAL-CONTENTS is (STRING . POSITION), the initial input
582 is STRING, but point is placed at position POSITION in the minibuffer.
583 Third arg KEYMAP is a keymap to use whilst reading;
584 if omitted or nil, the default is `minibuffer-local-map'.
585 If fourth arg READ is non-nil, then interpret the result as a lisp object
586 and return that object:
587 in other words, do `(car (read-from-string INPUT-STRING))'
588 Fifth arg HIST is ignored in this implementatin."
589 (si:read-from-minibuffer prompt initial-contents keymap read))))
591 ;; Add optional argument `frame'.
592 (or (fboundp 'si:get-buffer-window)
594 (fset 'si:get-buffer-window (symbol-function 'get-buffer-window))
595 (defun get-buffer-window (buffer &optional frame)
596 "Return a window currently displaying BUFFER, or nil if none.
597 Optional argunemt FRAME is ignored in this implementation."
598 (si:get-buffer-window buffer))))
600 (defun walk-windows (proc &optional minibuf all-frames)
601 "Cycle through all visible windows, calling PROC for each one.
602 PROC is called with a window as argument.
604 Optional second arg MINIBUF t means count the minibuffer window even
605 if not active. MINIBUF nil or omitted means count the minibuffer iff
606 it is active. MINIBUF neither t nor nil means not to count the
607 minibuffer even if it is active.
608 Optional third argunemt ALL-FRAMES is ignored in this implementation."
609 (if (window-minibuffer-p (selected-window))
611 (let* ((walk-windows-start (selected-window))
612 (walk-windows-current walk-windows-start))
615 (setq walk-windows-current
616 (next-window walk-windows-current minibuf))
617 (funcall proc walk-windows-current)
618 (not (eq walk-windows-current walk-windows-start))))
619 (select-window walk-windows-start))))
621 (defun buffer-disable-undo (&optional buffer)
622 "Make BUFFER stop keeping undo information.
623 No argument or nil as argument means do this for the current buffer."
624 (buffer-flush-undo (or buffer (current-buffer))))
627 ;;; @@ Frame (Emacs 18 cannot make frame)
629 ;; The following four are frequently used for manupulating the current frame.
630 ;; frame.el has `screen-width', `screen-height', `set-screen-width' and
631 ;; `set-screen-height' for backward compatibility and declare them as obsolete.
632 (defun frame-width (&optional frame)
633 "Return number of columns available for display on FRAME.
634 If FRAME is omitted, describe the currently selected frame."
637 (defun frame-height (&optional frame)
638 "Return number of lines available for display on FRAME.
639 If FRAME is omitted, describe the currently selected frame."
642 (defun set-frame-width (frame cols &optional pretend)
643 "Specify that the frame FRAME has COLS columns.
644 Optional third arg non-nil means that redisplay should use COLS columns
645 but that the idea of the actual width of the frame should not be changed."
646 (set-screen-width cols pretend))
648 (defun set-frame-height (frame lines &optional pretend)
649 "Specify that the frame FRAME has LINES lines.
650 Optional third arg non-nil means that redisplay should use LINES lines
651 but that the idea of the actual height of the frame should not be changed."
652 (set-screen-height lines pretend))
654 ;;; @@ Environment variables.
657 (autoload 'setenv "env"
658 "Set the value of the environment variable named VARIABLE to VALUE.
659 VARIABLE should be a string. VALUE is optional; if not provided or is
660 `nil', the environment variable VARIABLE will be removed.
661 This function works by modifying `process-environment'."
665 ;;; @ File input and output commands.
668 (defvar data-directory exec-directory)
670 ;; In 18.55, `call-process' does not return exit status.
671 (defun file-executable-p (filename)
672 "Return t if FILENAME can be executed by you.
673 For a directory, this means you can access files in that directory."
674 (if (file-exists-p filename)
675 (let ((process (start-process "test" nil "test" "-x" filename)))
676 (while (eq 'run (process-status process)))
677 (zerop (process-exit-status process)))))
679 (defun make-directory-internal (dirname)
680 "Create a directory. One argument, a file name string."
681 (let ((dir (expand-file-name dirname)))
682 (if (file-exists-p dir)
683 (error "Creating directory: %s is already exist" dir)
684 (call-process "mkdir" nil nil nil dir))))
686 (defun make-directory (dir &optional parents)
687 "Create the directory DIR and any nonexistent parent dirs.
688 The second (optional) argument PARENTS says whether
689 to create parent directories if they don't exist."
690 (let ((len (length dir))
693 (while (and (< p len) (string-match "[^/]*/?" dir p))
694 (setq p1 (match-end 0))
697 (setq path (substring dir 0 p1))
698 (if (not (file-directory-p path))
699 (cond ((file-exists-p path)
700 (error "Creating directory: %s is not directory" path))
702 (error "Creating directory: %s is not exist" path))
704 (make-directory-internal path))))
706 (make-directory-internal dir)))
708 (defun parse-colon-path (cd-path)
709 "Explode a colon-separated list of paths into a string list."
711 (let (cd-prefix cd-list (cd-start 0) cd-colon)
712 (setq cd-path (concat cd-path path-separator))
713 (while (setq cd-colon (string-match path-separator cd-path cd-start))
716 (list (if (= cd-start cd-colon)
718 (substitute-in-file-name
719 (file-name-as-directory
720 (substring cd-path cd-start cd-colon)))))))
721 (setq cd-start (+ cd-colon 1)))
724 (defun file-relative-name (filename &optional directory)
725 "Convert FILENAME to be relative to DIRECTORY (default: default-directory)."
726 (setq filename (expand-file-name filename)
727 directory (file-name-as-directory (expand-file-name
728 (or directory default-directory))))
730 (while (not (string-match (concat "^" (regexp-quote directory)) filename))
731 (setq directory (file-name-directory (substring directory 0 -1))
732 ancestor (concat "../" ancestor)))
733 (concat ancestor (substring filename (match-end 0)))))
735 (or (fboundp 'si:directory-files)
736 (fset 'si:directory-files (symbol-function 'directory-files)))
737 (defun directory-files (directory &optional full match nosort)
738 "Return a list of names of files in DIRECTORY.
739 There are three optional arguments:
740 If FULL is non-nil, return absolute file names. Otherwise return names
741 that are relative to the specified directory.
742 If MATCH is non-nil, mention only file names that match the regexp MATCH.
743 If NOSORT is dummy for compatibility."
744 (si:directory-files directory full match))
748 (or (fboundp 'si:accept-process-output)
750 (fset 'si:accept-process-output (symbol-function 'accept-process-output))
751 (defun accept-process-output (&optional process timeout timeout-msecs)
752 "Allow any pending output from subprocesses to be read by Emacs.
753 It is read into the process' buffers or given to their filter functions.
754 Non-nil arg PROCESS means do not return until some output has been received
755 from PROCESS. Nil arg PROCESS means do not return until some output has
756 been received from any process.
757 TIMEOUT and TIMEOUT-MSECS are ignored in this implementation."
758 (si:accept-process-output process))))
763 ;; In Emacs 20.4, these functions are defined in src/textprop.c.
764 (defun text-properties-at (position &optional object))
765 (defun get-text-property (position prop &optional object))
766 (defun get-char-property (position prop &optional object))
767 (defun next-property-change (position &optional object limit))
768 (defun next-single-property-change (position prop &optional object limit))
769 (defun previous-property-change (position &optional object limit))
770 (defun previous-single-property-change (position prop &optional object limit))
771 (defun add-text-properties (start end properties &optional object))
772 (defun put-text-property (start end property value &optional object))
773 (defun set-text-properties (start end properties &optional object))
774 (defun remove-text-properties (start end properties &optional object))
775 (defun text-property-any (start end property value &optional object))
776 (defun text-property-not-all (start end property value &optional object))
777 ;; the following two functions are new in v20.
778 (defun next-char-property-change (position &optional object))
779 (defun previous-char-property-change (position &optional object))
780 ;; the following two functions are obsolete.
781 ;; (defun erase-text-properties (start end &optional object)
782 ;; (defun copy-text-properties (start end src pos dest &optional prop)
788 (defun overlayp (object))
789 (defun make-overlay (beg end &optional buffer front-advance rear-advance))
790 (defun move-overlay (overlay beg end &optional buffer))
791 (defun delete-overlay (overlay))
792 (defun overlay-start (overlay))
793 (defun overlay-end (overlay))
794 (defun overlay-buffer (overlay))
795 (defun overlay-properties (overlay))
796 (defun overlays-at (pos))
797 (defun overlays-in (beg end))
798 (defun next-overlay-change (pos))
799 (defun previous-overlay-change (pos))
800 (defun overlay-lists ())
801 (defun overlay-recenter (pos))
802 (defun overlay-get (overlay prop))
803 (defun overlay-put (overlay prop value))
809 (product-provide (provide 'poe-18) (require 'apel-ver))
811 ;;; poe-18.el ends here