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Be better about bounds-checking, #'subseq, #'fill; add same, #'reduce. 2010-09-16 Aidan Kehoe <kehoea@parhasard.net> * fns.c (Fsubseq): Change the string code to better fit in with the rest of this function (it still uses get_string_range_char(), though, which *may* diverge algorithmically from what we're doing). If dealing with a cons, only call #'length if we have reason to believe that the START and END arguments are badly specified, and check for circular lists ourselves when that's appropriate. If dealing with a vector, call Fvector() on the appropriate subset of the old vector's data directly, don't initialise the result with nil and then copy. (Ffill): Only check the range arguments for a cons SEQUENCE if we have good reason to think they were badly specified. (Freduce): Handle multiple values properly. Add bounds checking to this function, as specificied by ANSI Common Lisp.
author Aidan Kehoe <kehoea@parhasard.net>
date Thu, 16 Sep 2010 18:46:05 +0100
parents 3ecd8885ac67
children 308d34e9f07d
line wrap: on
line source

;;; widget.el --- a library of user interface components.

;; Copyright (C) 1996, 1997 Free Software Foundation, Inc.

;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
;; Maintainer: Hrvoje Niksic <hniksic@xemacs.org>
;; Keywords: help, extensions, faces, hypermedia, dumped
;; Version: 1.9960-x
;; X-URL: http://www.dina.kvl.dk/~abraham/custom/

;; 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.

;;; Commentary:

;; This file is dumped with XEmacs.

;; If you want to use this code, please visit the URL above.

;; This file only contain the code needed to define new widget types.
;; Everything else is autoloaded from `wid-edit.el'.

;;; Code:

;; Neither XEmacs, nor latest GNU Emacs need this -- provided for
;; compatibility.
;; (defalias 'define-widget-keywords 'ignore)

(defmacro define-widget-keywords (&rest keys)
  "This doesn't do anything in Emacs 20 or XEmacs."
  `(eval-and-compile
     (let ((keywords (quote ,keys)))
       (while keywords
	 (or (boundp (car keywords))
	     (set (car keywords) (car keywords)))
	 (setq keywords (cdr keywords))))))

(defun define-widget (name class doc &rest args)
  "Define a new widget type named NAME from CLASS.

NAME and CLASS should both be symbols, CLASS should be one of the
existing widget types, or nil to create the widget from scratch.

After the new widget has been defined, the following two calls will
create identical widgets:

* (widget-create NAME)

* (apply 'widget-create CLASS ARGS)

The third argument DOC is a documentation string for the widget."
  (check-argument-type 'symbolp name)
  (check-argument-type 'symbolp class)
  (put name 'widget-type (cons class args))
  (put name 'widget-documentation doc)
  name)

;;; The End.

(provide 'widget)

;;; widget.el ends here