;;; gnus-ems.el --- functions for making Gnus work under different Emacsen

;; Copyright (C) 1995-2016 Free Software Foundation, Inc.

;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news

;; This file is part of GNU Emacs.

;; GNU Emacs 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 3 of the License, or
;; (at your option) any later version.

;; GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;;; Code:

(eval-when-compile
  (require 'cl)
  (require 'ring))

;;; Function aliases later to be redefined for XEmacs usage.

(defvar gnus-mouse-2 [mouse-2])
(defvar gnus-down-mouse-3 [down-mouse-3])
(defvar gnus-down-mouse-2 [down-mouse-2])
(defvar gnus-widget-button-keymap nil)
(defvar gnus-mode-line-modified
  (if (featurep 'xemacs)
      '("--**-" . "-----")
    '("**" "--")))

(eval-and-compile
  (autoload 'gnus-xmas-define "gnus-xmas")
  (autoload 'gnus-xmas-redefine "gnus-xmas"))

(autoload 'gnus-get-buffer-create "gnus")
(autoload 'nnheader-find-etc-directory "nnheader")
(autoload 'smiley-region "smiley")

(defun gnus-kill-all-overlays ()
  "Delete all overlays in the current buffer."
  (let* ((overlayss (overlay-lists))
	 (buffer-read-only nil)
	 (overlays (delq nil (nconc (car overlayss) (cdr overlayss)))))
    (while overlays
      (delete-overlay (pop overlays)))))

;;; Mule functions.

(defun gnus-mule-max-width-function (el max-width)
  `(let* ((val (eval (, el)))
	  (valstr (if (numberp val)
		      (int-to-string val) val)))
     (if (> (length valstr) ,max-width)
	 (truncate-string-to-width valstr ,max-width)
       valstr)))

(provide 'gnus-ems)

;;; gnus-ems.el ends here