[xemacs-hg @ 2002-04-14 12:41:59 by ben] latest changes TODO.ben-mule-21-5: Update. make-docfile.c: Add basic support for handling ISO 2022 doc strings -- we parse the basic charset designation sequences so we know whether we're in ASCII and have to pay attention to end quotes and such. Reformat code according to coding standards. abbrev.el: Add `global-abbrev-mode', which turns on or off abbrev-mode in all buffers. Added `defining-abbrev-turns-on-abbrev-mode' -- if non-nil, defining an abbrev through an interactive function will automatically turn on abbrev-mode, either globally or locally depending on the command. This is the "what you'd expect" behavior. indent.el: general function for indenting a balanced expression in a mode-correct way. Works similar to indent-region in that a mode can specify a specific command to do the whole operation; if not, figure out the region using forward-sexp and indent each line using indent-according-to-mode. keydefs.el: Removed. Modify M-C-backslash to do indent-region-or-balanced-expression. Make S-Tab just insert a TAB char, like it's meant to do. make-docfile.el: Now that we're using the call-process-in-lisp, we need to load an extra file win32-native.el because we're running a bare temacs. menubar-items.el: Totally redo the Cmds menu so that most used commands appear directly on the menu and less used commands appear in submenus. The old way may have been very pretty, but rather impractical. process.el: Under Windows, don't ever use old-call-process-internal, even in batch mode. We can do processes in batch mode. subr.el: Someone recoded truncate-string-to-width, saying "the FSF version is too complicated and does lots of hard-to-understand stuff" but the resulting recoded version was *totally* wrong! it misunderstood the basic point of this function, which is work in *columns* not chars. i dumped ours and copied the version from FSF 21.1. Also added truncate-string-with-continuation-dots, since this idiom is used often. config.inc.samp, xemacs.mak: Separate out debug and optimize flags. Remove all vestiges of USE_MINIMAL_TAGBITS, USE_INDEXED_LRECORD_IMPLEMENTATION, and GUNG_HO, since those ifdefs have long been removed. Make error-checking support actually work. Some rearrangement of config.inc.samp to make it more logical. Remove callproc.c and ntproc.c from xemacs.mak, no longer used. Make pdump the default. lisp.h: Add support for strong type-checking of Bytecount, Bytebpos, Charcount, Charbpos, and others, by making them classes, overloading the operators to provide integer-like operation and carefully controlling what operations are allowed. Not currently enabled in C++ builds because there are still a number of compile errors, and it won't really work till we merge in my "8-bit-Mule" workspace, in which I make use of the new types Charxpos, Bytexpos, Memxpos, representing a "position" either in a buffer or a string. (This is especially important in the extent code.) abbrev.c, alloc.c, eval.c, buffer.c, buffer.h, editfns.c, fns.c, text.h: Warning fixes, some of them related to new C++ strict type checking of Bytecount, Charbpos, etc. dired.c: Caught an actual error due to strong type checking -- char len being passed when should be byte len. alloc.c, backtrace.h, bytecode.c, bytecode.h, eval.c, sysdep.c: Further optimize Ffuncall: -- process arg list at compiled-function creation time, converting into an array for extra-quick access at funcall time. -- rewrite funcall_compiled_function to use it, and inline this function. -- change the order of check for magic stuff in SPECBIND_FAST_UNSAFE to be faster. -- move the check for need to garbage collect into the allocation code, so only a single flag needs to be checked in funcall. buffer.c, symbols.c: add debug funs to check on mule optimization info in buffers and strings. eval.c, emacs.c, text.c, regex.c, scrollbar-msw.c, search.c: Fix evil crashes due to eistrings not properly reinitialized under pdump. Redo a bit some of the init routines; convert some complex_vars_of() into simple vars_of(), because they didn't need complex processing. callproc.c, emacs.c, event-stream.c, nt.c, process.c, process.h, sysdep.c, sysdep.h, syssignal.h, syswindows.h, ntproc.c: Delete. Hallelujah, praise the Lord, there is no god but Allah!!! fix so that processes can be invoked in bare temacs -- thereby eliminating any need for callproc.c. (currently only eliminated under NT.) remove all crufty and unnecessary old process code in ntproc.c and elsewhere. move non-callproc-specific stuff (mostly environment) into process.c, so callproc.c can be left out under NT. console-tty.c, doc.c, file-coding.c, file-coding.h, lstream.c, lstream.h: fix doc string handling so it works with Japanese, etc docs. change handling of "character mode" so callers don't have to manually set it (quite error-prone). event-msw.c: spacing fixes. lread.c: eliminate unused crufty vintage-19 "FSF defun hack" code. lrecord.h: improve pdump description docs. buffer.c, ntheap.c, unexnt.c, win32.c, emacs.c: Mule-ize some unexec and startup code. It was pseudo-Mule-ized before by simply always calling the ...A versions of functions, but that won't cut it -- eventually we want to be able to run properly even if XEmacs has been installed in a Japanese directory. (The current problem is the timing of the loading of the Unicode tables; this will eventually be fixed.) Go through and fix various other places where the code was not Mule-clean. Provide a function mswindows_get_module_file_name() to get our own name without resort to PATH_MAX and such. Add a big comment in main() about the problem with Unicode table load timing that I just alluded to. emacs.c: When error-checking is enabled (interpreted as "user is developing XEmacs"), don't ask user to "pause to read messages" when a fatal error has occurred, because it will wedge if we are in an inner modal loop (typically when a menu is popped up) and make us unable to get a useful stack trace in the debugger. text.c: Correct update_entirely_ascii_p_flag to actually work. lisp.h, symsinit.h: declarations for above changes.

;;; loadhist.el --- lisp functions for working with feature groups

;; Copyright (C) 1995 Free Software Foundation, Inc.

;; Author: Eric S. Raymond <esr@snark.thyrsus.com>
;; Version: 1.0
;; Keywords: internal, dumped

;; This file is part of XEmacs.

;; XEmacs is free software; you can redistribute it and/or modify it
;; under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.

;; XEmacs is distributed in the hope that it will be useful, but
;; WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;; General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with XEmacs; see the file COPYING.  If not, write to the Free
;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
;; 02111-1307, USA.

;;; Synched up with: FSF 20.2.

;;; Commentary:

;; This file is dumped with XEmacs.

;; These functions exploit the load-history system variable.
;; Entry points include `unload-feature', `symbol-file', and `feature-file'.

;;; Code:

;; load-history is a list of entries that look like this:
;; ("outline" outline-regexp ... (require . wid-edit) ... (provide . outline) ...)

(defun symbol-file (sym)
  "Return the input source from which SYM was loaded.
This is a file name, or nil if the source was a buffer with no associated file."
  (interactive "SFind source file for symbol: ") ; XEmacs
  (dolist (entry load-history)
    (when (memq sym (cdr entry))
      (return (car entry)))))

(defun feature-symbols (feature)
  "Return the file and list of symbols associated with a given FEATURE."
  (let ((pair `(provide . ,feature)))
    (dolist (entry load-history)
      (when (member pair (cdr entry))
	(return entry)))))

(defun feature-file (feature)
  "Return the file name from which a given FEATURE was loaded.
Actually, return the load argument, if any; this is sometimes the name of a
Lisp file without an extension.  If the feature came from an eval-buffer on
a buffer with no associated file, or an eval-region, return nil."
  (unless (featurep feature)
    (error "%s is not a currently loaded feature" (symbol-name feature)))
  (car (feature-symbols feature)))

(defun file-symbols (file)
  "Return the file and list of symbols associated with FILE.
The file name in the returned list is the string used to load the file,
and may not be the same string as FILE, but it will be equivalent."
  (or (assoc file load-history)
      (assoc (file-name-sans-extension file) load-history)
      (assoc (concat file ".el") load-history)
      (assoc (concat file ".elc") load-history)))

(defun file-provides (file)
  "Return the list of features provided by FILE."
  (let ((provides nil))
    (dolist (x (cdr (file-symbols file)))
      (when (eq (car-safe x) 'provide)
	(push (cdr x) provides)))
    provides))

(defun file-requires (file)
  "Return the list of features required by FILE."
  (let ((requires nil))
    (dolist (x (cdr (file-symbols file)))
      (when (eq (car-safe x) 'require)
	(push (cdr x) requires)))
    requires))

(defun file-dependents (file)
  "Return the list of loaded libraries that depend on FILE.
This can include FILE itself."
  (let ((provides (file-provides file))
	(dependents nil))
    (dolist (entry load-history)
      (dolist (x (cdr entry))
	(when (and (eq (car-safe x) 'require)
		   (memq (cdr-safe x) provides))
	  (push (car entry) dependents))))
    dependents))

;; FSFmacs
;(defun read-feature (prompt)
;  "Read a feature name \(string\) from the minibuffer,
;prompting with PROMPT and completing from `features', and
;return the feature \(symbol\)."
;  (intern (completing-read prompt
;			   (mapcar #'(lambda (feature)
;			             (list (symbol-name feature)))
;				   features)
;			   nil t)))

;; ;;;###autoload
(defun unload-feature (feature &optional force)
  "Unload the library that provided FEATURE, restoring all its autoloads.
If the feature is required by any other loaded code, and optional FORCE
is nil, raise an error."
  (interactive "SFeature: ")
  (unless (featurep feature)
    (error "%s is not a currently loaded feature" (symbol-name feature)))
  (when (not force)
    (let* ((file (feature-file feature))
	   (dependents (delete file (copy-sequence (file-dependents file)))))
      (when dependents
	(error "Loaded libraries %s depend on %s"
	       (prin1-to-string dependents) file))))
  (let* ((flist (feature-symbols feature))
	 (file (car flist)))
    (flet ((reset-aload (x)
	     (let ((aload (get x 'autoload)))
	       (if aload (fset x (cons 'autoload aload))))))
    (mapcar
     #'(lambda (x)
	 (cond ((stringp x) nil)
	       ((consp x)
		;; Remove any feature names that this file provided.
		(if (eq (car x) 'provide)
		    (setq features (delq (cdr x) features))))
	       ((and (boundp x)
		     (fboundp x))
		(makunbound x)
		(fmakunbound x)
		(reset-aload x))
	       ((boundp x)
		(makunbound x))
	       ((fboundp x)
		(fmakunbound x)
		(reset-aload x))))
     (cdr flist)))
    ;; Delete the load-history element for this file.
    (let ((elt (assoc file load-history)))
      (setq load-history (delq elt load-history)))))

(provide 'loadhist)

;;; loadhist.el ends here