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.
53 (fset 'defalias 'fset)
55 (defun byte-code-function-p (object)
56 "Return t if OBJECT is a byte-compiled function object."
57 (and (consp object) (consp (cdr object))
58 (let ((rest (cdr (cdr object)))
60 (if (stringp (car rest))
61 (setq rest (cdr rest)))
66 (eq (car elt) 'byte-code))
68 (setq rest (cdr rest)))))))
70 ;; (symbol-plist 'cyclic-function-indirection)
71 (put 'cyclic-function-indirection
73 '(cyclic-function-indirection error))
74 (put 'cyclic-function-indirection
76 "Symbol's chain of function indirections contains a loop")
78 ;; The following function definition is a direct translation of its
79 ;; C definition in emacs-20.4/src/data.c.
80 (defun indirect-function (object)
81 "Return the function at the end of OBJECT's function chain.
82 If OBJECT is a symbol, follow all function indirections and return the final
84 If OBJECT is not a symbol, just return it.
85 Signal a void-function error if the final symbol is unbound.
86 Signal a cyclic-function-indirection error if there is a loop in the
87 function chain of symbols."
92 (or (symbolp hare) (throw 'found hare))
93 (or (fboundp hare) (signal 'void-function (cons object nil)))
94 (setq hare (symbol-function hare))
95 (or (symbolp hare) (throw 'found hare))
96 (or (fboundp hare) (signal 'void-function (cons object nil)))
97 (setq hare (symbol-function hare))
99 (setq tortoise (symbol-function tortoise))
101 (if (eq hare tortoise)
102 (signal 'cyclic-function-indirection (cons object nil)))))
105 ;;; Emulate all functions and macros of emacs-20.3/lisp/byte-run.el.
106 ;;; (note: jwz's original compiler and XEmacs compiler have some more
107 ;;; macros; they are "nuked" by rms in FSF version.)
109 ;; Use `*-maybe' here because new byte-compiler may be installed.
110 (put 'inline 'lisp-indent-hook 0)
111 (defmacro-maybe inline (&rest body)
112 "Eval BODY forms sequentially and return value of last one.
114 This emulating macro does not support function inlining because old \(v18\)
115 compiler does not support inlining feature."
118 (put 'defsubst 'lisp-indent-hook 'defun)
119 (put 'defsubst 'edebug-form-spec 'defun)
120 (defmacro-maybe defsubst (name arglist &rest body)
121 "Define an inline function. The syntax is just like that of `defun'.
123 This emulating macro does not support function inlining because old \(v18\)
124 compiler does not support inlining feature."
125 (cons 'defun (cons name (cons arglist body))))
127 (defun-maybe make-obsolete (fn new)
128 "Make the byte-compiler warn that FUNCTION is obsolete.
129 The warning will say that NEW should be used instead.
130 If NEW is a string, that is the `use instead' message.
132 This emulating function does nothing because old \(v18\) compiler does not
133 support this feature."
134 (interactive "aMake function obsolete: \nxObsoletion replacement: ")
137 (defun-maybe make-obsolete-variable (var new)
138 "Make the byte-compiler warn that VARIABLE is obsolete,
139 and NEW should be used instead. If NEW is a string, then that is the
140 `use instead' message.
142 This emulating function does nothing because old \(v18\) compiler does not
143 support this feature."
144 (interactive "vMake variable obsolete: \nxObsoletion replacement: ")
147 (put 'dont-compile 'lisp-indent-hook 0)
148 (defmacro-maybe dont-compile (&rest body)
149 "Like `progn', but the body always runs interpreted \(not compiled\).
150 If you think you need this, you're probably making a mistake somewhere."
151 (list 'eval (list 'quote (if (cdr body) (cons 'progn body) (car body)))))
153 (put 'eval-when-compile 'lisp-indent-hook 0)
154 (defmacro-maybe eval-when-compile (&rest body)
155 "Like progn, but evaluates the body at compile-time.
157 This emulating macro does not do compile-time evaluation at all because
158 of the limitation of old \(v18\) compiler."
161 (put 'eval-and-compile 'lisp-indent-hook 0)
162 (defmacro-maybe eval-and-compile (&rest body)
163 "Like progn, but evaluates the body at compile-time as well as at load-time.
165 This emulating macro does not do compile-time evaluation at all because
166 of the limitation of old \(v18\) compiler."
170 ;;; @ C primitives emulation.
173 (defun member (elt list)
174 "Return non-nil if ELT is an element of LIST. Comparison done with EQUAL.
175 The value is actually the tail of LIST whose car is ELT."
176 (while (and list (not (equal elt (car list))))
177 (setq list (cdr list)))
180 (defun delete (elt list)
181 "Delete by side effect any occurrences of ELT as a member of LIST.
182 The modified LIST is returned. Comparison is done with `equal'.
183 If the first member of LIST is ELT, deleting it is not a side effect;
184 it is simply using a different list.
185 Therefore, write `(setq foo (delete element foo))'
186 to be sure of changing the value of `foo'."
188 (if (equal elt (car list))
192 (while (and rrest (not (equal elt (car rrest))))
195 (setcdr rest (cdr rrest))
198 (defun default-boundp (symbol)
199 "Return t if SYMBOL has a non-void default value.
200 This is the value that is seen in buffers that do not have their own values
202 (condition-case error
204 (default-value symbol)
206 (void-variable nil)))
211 (defvar current-time-world-timezones
212 '(("PST" . -800)("PDT" . -700)("MST" . -700)
213 ("MDT" . -600)("CST" . -600)("CDT" . -500)
214 ("EST" . -500)("EDT" . -400)("AST" . -400)
215 ("NST" . -330)("UT" . +000)("GMT" . +000)
216 ("BST" . +100)("MET" . +100)("EET" . +200)
217 ("JST" . +900)("GMT+1" . +100)("GMT+2" . +200)
218 ("GMT+3" . +300)("GMT+4" . +400)("GMT+5" . +500)
219 ("GMT+6" . +600)("GMT+7" . +700)("GMT+8" . +800)
220 ("GMT+9" . +900)("GMT+10" . +1000)("GMT+11" . +1100)
221 ("GMT+12" . +1200)("GMT+13" . +1300)("GMT-1" . -100)
222 ("GMT-2" . -200)("GMT-3" . -300)("GMT-4" . -400)
223 ("GMT-5" . -500)("GMT-6" . -600)("GMT-7" . -700)
224 ("GMT-8" . -800)("GMT-9" . -900)("GMT-10" . -1000)
225 ("GMT-11" . -1100) ("GMT-12" . -1200))
226 "Time differentials of timezone from GMT in +-HHMM form.
227 Used in `current-time-zone' (Emacs 19 emulating function by APEL).")
229 (defvar current-time-local-timezone nil
230 "*Local timezone name.
231 Used in `current-time-zone' (Emacs 19 emulating function by APEL).")
233 (defun set-time-zone-rule (tz)
234 "Set the local time zone using TZ, a string specifying a time zone rule.
235 If TZ is nil, use implementation-defined default time zone information.
236 If TZ is t, use Universal Time."
239 (setq current-time-local-timezone tz))
241 (setq current-time-local-timezone "GMT"))
243 (setq current-time-local-timezone
245 ;; We use `date' command to get timezone information.
246 (call-process "date" nil (current-buffer) t)
247 (goto-char (point-min))
249 "^.*\\([A-Z][A-Z][A-Z]\\([^ \n\t]*\\)\\).*$")
250 (buffer-substring (match-beginning 1)
253 (defun current-time-zone (&optional specified-time)
254 "Return the offset and name for the local time zone.
255 This returns a list of the form (OFFSET NAME).
256 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).
257 A negative value means west of Greenwich.
258 NAME is a string giving the name of the time zone.
259 Optional argument SPECIFIED-TIME is ignored in this implementation.
260 Some operating systems cannot provide all this information to Emacs;
261 in this case, `current-time-zone' returns a list containing nil for
262 the data it can't find."
263 (let ((local-timezone (or current-time-local-timezone
265 (set-time-zone-rule nil)
266 current-time-local-timezone)))
267 timezone abszone seconds)
269 (or (cdr (assoc (upcase local-timezone)
270 current-time-world-timezones))
271 ;; "+900" style or nil.
274 (if (stringp timezone)
275 (setq timezone (string-to-int timezone)))
276 ;; Taking account of minute in timezone.
278 (setq abszone (abs timezone))
279 (setq seconds (* 60 (+ (* 60 (/ abszone 100)) (% abszone 100))))
280 (list (if (< timezone 0) (- seconds) seconds)
283 (or (fboundp 'si:current-time-string)
284 (fset 'si:current-time-string (symbol-function 'current-time-string)))
285 (defun current-time-string (&optional specified-time)
286 "Return the current time, as a human-readable string.
287 Programs can use this function to decode a time,
288 since the number of columns in each field is fixed.
289 The format is `Sun Sep 16 01:03:52 1973'.
290 If an argument SPECIFIED-TIME is given, it specifies a time to format
291 instead of the current time. The argument should have the form:
294 (HIGH LOW . IGNORED).
295 Thus, you can use times obtained from `current-time'
296 and from `file-attributes'."
297 (if (null specified-time)
298 (si:current-time-string)
299 (or (consp specified-time)
300 (error "Wrong type argument %s" specified-time))
301 (let ((high (car specified-time))
302 (low (cdr specified-time))
303 (offset (or (car (current-time-zone)) 0))
304 (mdays '(31 28 31 30 31 30 31 31 30 31 30 31))
305 (mnames '("Jan" "Feb" "Mar" "Apr" "May" "Jun"
306 "Jul" "Aug" "Sep" "Oct" "Nov" "Dec"))
307 (wnames '("Sun" "Mon" "Tue" "Wed" "Thu" "Fri" "Sat"))
308 days dd yyyy lyear mm HH MM SS)
310 (setq low (car low)))
312 (error "Wrong type argument %s" high))
314 (error "Wrong type argument %s" low))
315 (setq low (+ low offset))
320 (while (or (> high 481)
327 (setq high (- high 481)
329 (if (and (zerop (% yyyy 4))
330 (or (not (zerop (% yyyy 100)))
331 (zerop (% yyyy 400))))
337 (setq high (- high 1)
339 (setq yyyy (1+ yyyy)))
341 (while (or (> high 1)
348 (setq high (- high 1)
353 (setq low (+ 65536 low)))
355 (setq lyear (and (zerop (% yyyy 4))
356 (or (not (zerop (% yyyy 100)))
357 (zerop (% yyyy 400)))))
358 (while (> (- dd (if (and lyear (= mm 1)) 29 (nth mm mdays))) 0)
359 (setq dd (- dd (if (and lyear (= mm 1)) 29 (nth mm mdays))))
361 (setq HH (/ low 3600)
365 (format "%s %s %2d %02d:%02d:%02d %4d"
367 (- (+ (* (1- yyyy) 365) (/ (1- yyyy) 400)
368 (/ (1- yyyy) 4)) (/ (1- yyyy) 100))) 7)
373 (defun current-time ()
374 "Return the current time, as the number of seconds since 1970-01-01 00:00:00.
375 The time is returned as a list of three integers. The first has the
376 most significant 16 bits of the seconds, while the second has the
377 least significant 16 bits. The third integer gives the microsecond
380 The microsecond count is zero on systems that do not provide
381 resolution finer than a second."
382 (let* ((str (current-time-string))
383 (yyyy (string-to-int (substring str 20 24)))
384 (mm (length (member (substring str 4 7)
385 '("Dec" "Nov" "Oct" "Sep" "Aug" "Jul"
386 "Jun" "May" "Apr" "Mar" "Feb" "Jan"))))
387 (dd (string-to-int (substring str 8 10)))
388 (HH (string-to-int (substring str 11 13)))
389 (MM (string-to-int (substring str 14 16)))
390 (SS (string-to-int (substring str 17 19)))
391 (offset (or (car (current-time-zone)) 0))
394 (setq ct1 0 ct2 0 i1 0 i2 0)
395 (setq year (- yyyy 1970))
403 (setq year (- yyyy 1))
404 (setq uru (- (+ (- (/ year 4) (/ year 100))
418 (setq dn (+ dd (* 31 (1- mm))))
420 (setq dn (+ (- dn (/ (+ 23 (* 4 mm)) 10))
421 (if (and (zerop (% yyyy 4))
422 (or (not (zerop (% yyyy 100)))
423 (zerop (% yyyy 400))))
435 (setq ct1 (+ (+ (+ ct1 i1) (/ ct2 65536))
436 (/ (+ (* HH 3600) (* MM 60) SS)
438 ct2 (+ (+ i2 (% ct2 65536))
439 (% (+ (* HH 3600) (* MM 60) SS)
441 (while (< (- ct2 offset) 0)
444 (setq ct2 (- ct2 offset))
450 ;;; @@ Floating point numbers.
454 "Return the absolute value of ARG."
455 (if (< arg 0) (- arg) arg))
457 (defun floor (arg &optional divisor)
458 "Return the largest integer no grater than ARG.
459 With optional DIVISOR, return the largest integer no greater than ARG/DIVISOR."
463 (- (/ (- divisor 1 arg) divisor))
466 ;;; @ Basic lisp subroutines.
469 (defmacro lambda (&rest cdr)
470 "Return a lambda expression.
471 A call of the form (lambda ARGS DOCSTRING INTERACTIVE BODY) is
472 self-quoting; the result of evaluating the lambda expression is the
473 expression itself. The lambda expression may then be treated as a
474 function, i.e., stored as the function value of a symbol, passed to
475 funcall or mapcar, etc.
477 ARGS should take the same form as an argument list for a `defun'.
478 DOCSTRING is an optional documentation string.
479 If present, it should describe how to call the function.
480 But documentation strings are usually not useful in nameless functions.
481 INTERACTIVE should be a call to the function `interactive', which see.
482 It may also be omitted.
483 BODY should be a list of lisp expressions."
484 ;; Note that this definition should not use backquotes; subr.el should not
485 ;; depend on backquote.el.
486 (list 'function (cons 'lambda cdr)))
488 (defun force-mode-line-update (&optional all)
489 "Force the mode-line of the current buffer to be redisplayed.
490 With optional non-nil ALL, force redisplay of all mode-lines."
491 (if all (save-excursion (set-buffer (other-buffer))))
492 (set-buffer-modified-p (buffer-modified-p)))
494 (defalias 'set-match-data 'store-match-data)
496 (defvar save-match-data-internal)
498 ;; We use save-match-data-internal as the local variable because
499 ;; that works ok in practice (people should not use that variable elsewhere).
500 (defmacro save-match-data (&rest body)
501 "Execute the BODY forms, restoring the global value of the match data."
502 (` (let ((save-match-data-internal (match-data)))
503 (unwind-protect (progn (,@ body))
504 (set-match-data save-match-data-internal)))))
507 ;;; @ Basic editing commands.
510 ;; 18.55 does not have these variables.
511 (defvar-maybe buffer-undo-list nil
512 "List of undo entries in current buffer.
513 APEL provides this as dummy for a compatibility.")
515 (defvar-maybe auto-fill-function nil
516 "Function called (if non-nil) to perform auto-fill.
517 APEL provides this as dummy for a compatibility.")
519 (defvar-maybe unread-command-event nil
520 "APEL provides this as dummy for a compatibility.")
521 (defvar-maybe unread-command-events nil
522 "List of events to be read as the command input.
523 APEL provides this as dummy for a compatibility.")
525 ;; (defvar-maybe minibuffer-setup-hook nil
526 ;; "Normal hook run just after entry to minibuffer.")
527 ;; (defvar-maybe minibuffer-exit-hook nil
528 ;; "Normal hook run just after exit from minibuffer.")
530 (defvar-maybe minor-mode-map-alist nil
531 "Alist of keymaps to use for minor modes.
532 APEL provides this as dummy for a compatibility.")
534 (defalias 'insert-and-inherit 'insert)
535 (defalias 'insert-before-markers-and-inherit 'insert-before-markers)
536 (defalias 'number-to-string 'int-to-string)
538 (defun generate-new-buffer-name (name &optional ignore)
539 "Return a string that is the name of no existing buffer based on NAME.
540 If there is no live buffer named NAME, then return NAME.
541 Otherwise modify name by appending `<NUMBER>', incrementing NUMBER
542 until an unused name is found, and then return that name.
543 Optional second argument IGNORE specifies a name that is okay to use
544 \(if it is in the sequence to be tried\)
545 even if a buffer with that name exists."
546 (if (get-buffer name)
548 (while (get-buffer (setq new (format "%s<%d>" name n)))
553 (or (fboundp 'si:mark)
554 (fset 'si:mark (symbol-function 'mark)))
555 (defun mark (&optional force)
558 (defun-maybe window-minibuffer-p (&optional window)
559 "Return non-nil if WINDOW is a minibuffer window."
560 (eq (or window (selected-window)) (minibuffer-window)))
562 (defun-maybe window-live-p (obj)
563 "Returns t if OBJECT is a window which is currently visible."
565 (or (eq obj (minibuffer-window))
566 (eq obj (get-buffer-window (window-buffer obj))))))
568 ;; Add optinal argument `hist'
569 (or (fboundp 'si:read-from-minibuffer)
571 (fset 'si:read-from-minibuffer (symbol-function 'read-from-minibuffer))
572 (defun read-from-minibuffer (prompt &optional
573 initial-contents keymap read hist)
575 "Read a string from the minibuffer, prompting with string PROMPT.
576 If optional second arg INITIAL-CONTENTS is non-nil, it is a string
577 to be inserted into the minibuffer before reading input.
578 If INITIAL-CONTENTS is (STRING . POSITION), the initial input
579 is STRING, but point is placed at position POSITION in the minibuffer.
580 Third arg KEYMAP is a keymap to use whilst reading;
581 if omitted or nil, the default is `minibuffer-local-map'.
582 If fourth arg READ is non-nil, then interpret the result as a lisp object
583 and return that object:
584 in other words, do `(car (read-from-string INPUT-STRING))'
585 Fifth arg HIST is ignored in this implementatin."
586 (si:read-from-minibuffer prompt initial-contents keymap read))))
588 ;; Add optional argument `frame'.
589 (or (fboundp 'si:get-buffer-window)
591 (fset 'si:get-buffer-window (symbol-function 'get-buffer-window))
592 (defun get-buffer-window (buffer &optional frame)
593 "Return a window currently displaying BUFFER, or nil if none.
594 Optional argunemt FRAME is ignored in this implementation."
595 (si:get-buffer-window buffer))))
597 (defun-maybe walk-windows (proc &optional minibuf all-frames)
598 "Cycle through all visible windows, calling PROC for each one.
599 PROC is called with a window as argument.
601 Optional second arg MINIBUF t means count the minibuffer window even
602 if not active. MINIBUF nil or omitted means count the minibuffer iff
603 it is active. MINIBUF neither t nor nil means not to count the
604 minibuffer even if it is active.
605 Optional third argunemt ALL-FRAMES is ignored in this implementation."
606 (if (window-minibuffer-p (selected-window))
608 (let* ((walk-windows-start (selected-window))
609 (walk-windows-current walk-windows-start))
612 (setq walk-windows-current
613 (next-window walk-windows-current minibuf))
614 (funcall proc walk-windows-current)
615 (not (eq walk-windows-current walk-windows-start))))
616 (select-window walk-windows-start))))
618 (defun buffer-disable-undo (&optional buffer)
619 "Make BUFFER stop keeping undo information.
620 No argument or nil as argument means do this for the current buffer."
621 (buffer-flush-undo (or buffer (current-buffer))))
624 ;;; @@ Frame (Emacs 18 cannot make frame)
626 ;; The following four are frequently used for manupulating the current frame.
627 ;; frame.el has `screen-width', `screen-height', `set-screen-width' and
628 ;; `set-screen-height' for backward compatibility and declare them as obsolete.
629 (defun frame-width (&optional frame)
630 "Return number of columns available for display on FRAME.
631 If FRAME is omitted, describe the currently selected frame."
634 (defun frame-height (&optional frame)
635 "Return number of lines available for display on FRAME.
636 If FRAME is omitted, describe the currently selected frame."
639 (defun set-frame-width (frame cols &optional pretend)
640 "Specify that the frame FRAME has COLS columns.
641 Optional third arg non-nil means that redisplay should use COLS columns
642 but that the idea of the actual width of the frame should not be changed."
643 (set-screen-width cols pretend))
645 (defun set-frame-height (frame lines &optional pretend)
646 "Specify that the frame FRAME has LINES lines.
647 Optional third arg non-nil means that redisplay should use LINES lines
648 but that the idea of the actual height of the frame should not be changed."
649 (set-screen-height lines pretend))
651 ;;; @@ Environment variables.
654 (autoload 'setenv "env"
655 "Set the value of the environment variable named VARIABLE to VALUE.
656 VARIABLE should be a string. VALUE is optional; if not provided or is
657 `nil', the environment variable VARIABLE will be removed.
658 This function works by modifying `process-environment'."
662 ;;; @ File input and output commands.
665 (defvar data-directory exec-directory)
667 ;; In 18.55, `call-process' does not return exit status.
668 (defun file-executable-p (filename)
669 "Return t if FILENAME can be executed by you.
670 For a directory, this means you can access files in that directory."
671 (if (file-exists-p filename)
672 (let ((process (start-process "test" nil "test" "-x" filename)))
673 (while (eq 'run (process-status process)))
674 (zerop (process-exit-status process)))))
676 (defun make-directory-internal (dirname)
677 "Create a directory. One argument, a file name string."
678 (let ((dir (expand-file-name dirname)))
679 (if (file-exists-p dir)
680 (error "Creating directory: %s is already exist" dir)
681 (call-process "mkdir" nil nil nil dir))))
683 (defun make-directory (dir &optional parents)
684 "Create the directory DIR and any nonexistent parent dirs.
685 The second (optional) argument PARENTS says whether
686 to create parent directories if they don't exist."
687 (let ((len (length dir))
690 (while (and (< p len) (string-match "[^/]*/?" dir p))
691 (setq p1 (match-end 0))
694 (setq path (substring dir 0 p1))
695 (if (not (file-directory-p path))
696 (cond ((file-exists-p path)
697 (error "Creating directory: %s is not directory" path))
699 (error "Creating directory: %s is not exist" path))
701 (make-directory-internal path))))
703 (make-directory-internal dir)))
705 (defun parse-colon-path (cd-path)
706 "Explode a colon-separated list of paths into a string list."
708 (let (cd-prefix cd-list (cd-start 0) cd-colon)
709 (setq cd-path (concat cd-path path-separator))
710 (while (setq cd-colon (string-match path-separator cd-path cd-start))
713 (list (if (= cd-start cd-colon)
715 (substitute-in-file-name
716 (file-name-as-directory
717 (substring cd-path cd-start cd-colon)))))))
718 (setq cd-start (+ cd-colon 1)))
721 (defun file-relative-name (filename &optional directory)
722 "Convert FILENAME to be relative to DIRECTORY (default: default-directory)."
723 (setq filename (expand-file-name filename)
724 directory (file-name-as-directory (expand-file-name
725 (or directory default-directory))))
727 (while (not (string-match (concat "^" (regexp-quote directory)) filename))
728 (setq directory (file-name-directory (substring directory 0 -1))
729 ancestor (concat "../" ancestor)))
730 (concat ancestor (substring filename (match-end 0)))))
732 (or (fboundp 'si:directory-files)
733 (fset 'si:directory-files (symbol-function 'directory-files)))
734 (defun directory-files (directory &optional full match nosort)
735 "Return a list of names of files in DIRECTORY.
736 There are three optional arguments:
737 If FULL is non-nil, return absolute file names. Otherwise return names
738 that are relative to the specified directory.
739 If MATCH is non-nil, mention only file names that match the regexp MATCH.
740 If NOSORT is dummy for compatibility."
741 (si:directory-files directory full match))
745 (or (fboundp 'si:accept-process-output)
747 (fset 'si:accept-process-output (symbol-function 'accept-process-output))
748 (defun accept-process-output (&optional process timeout timeout-msecs)
749 "Allow any pending output from subprocesses to be read by Emacs.
750 It is read into the process' buffers or given to their filter functions.
751 Non-nil arg PROCESS means do not return until some output has been received
752 from PROCESS. Nil arg PROCESS means do not return until some output has
753 been received from any process.
754 TIMEOUT and TIMEOUT-MSECS are ignored in this implementation."
755 (si:accept-process-output process))))
760 ;; In Emacs 20.4, these functions are defined in src/textprop.c.
761 (defun text-properties-at (position &optional object))
762 (defun get-text-property (position prop &optional object))
763 (defun get-char-property (position prop &optional object))
764 (defun next-property-change (position &optional object limit))
765 (defun next-single-property-change (position prop &optional object limit))
766 (defun previous-property-change (position &optional object limit))
767 (defun previous-single-property-change (position prop &optional object limit))
768 (defun add-text-properties (start end properties &optional object))
769 (defun put-text-property (start end property value &optional object))
770 (defun set-text-properties (start end properties &optional object))
771 (defun remove-text-properties (start end properties &optional object))
772 (defun text-property-any (start end property value &optional object))
773 (defun text-property-not-all (start end property value &optional object))
774 ;; the following two functions are new in v20.
775 (defun next-char-property-change (position &optional object))
776 (defun previous-char-property-change (position &optional object))
777 ;; the following two functions are obsolete.
778 ;; (defun erase-text-properties (start end &optional object)
779 ;; (defun copy-text-properties (start end src pos dest &optional prop)
785 (defun overlayp (object))
786 (defun make-overlay (beg end &optional buffer front-advance rear-advance))
787 (defun move-overlay (overlay beg end &optional buffer))
788 (defun delete-overlay (overlay))
789 (defun overlay-start (overlay))
790 (defun overlay-end (overlay))
791 (defun overlay-buffer (overlay))
792 (defun overlay-properties (overlay))
793 (defun overlays-at (pos))
794 (defun overlays-in (beg end))
795 (defun next-overlay-change (pos))
796 (defun previous-overlay-change (pos))
797 (defun overlay-lists ())
798 (defun overlay-recenter (pos))
799 (defun overlay-get (overlay prop))
800 (defun overlay-put (overlay prop value))
806 (product-provide (provide 'poe-18) (require 'apel-ver))
808 ;;; poe-18.el ends here