view lisp/mule/mule-x-init.el @ 4783:e29fcfd8df5f

Eliminate most core code byte-compile warnings. 2009-12-18 Aidan Kehoe <kehoea@parhasard.net> * alist.el (modify-alist): * autoload.el (update-autoload-files, autoload-print-form): * bytecomp.el (batch-byte-compile-1) (byte-compile-multiple-value-call, byte-compile-funcall) (byte-compile-insert, byte-compile-concat, byte-compile-list) (byte-compile-normal-call, byte-compile-flush-pending): * cl-macs.el (letf): * cl.el: * disass.el (disassemble-1): * easy-mmode.el (easy-mmode-define-syntax): * faces.el (set-face-parent): * files.el (cd): * finder.el (finder-list-matches, finder-list-keywords) (finder-compile-keywords): * frame.el (frame-notice-user-settings) (frame-remove-geometry-props): * ldap.el (ldap-delete-entries, ldap-modify-entries) (ldap-add-entries): * loadhist.el (unload-feature): * map-ynp.el (map-y-or-n-p): * menubar-items.el (default-menubar): * mouse.el (default-mouse-track-next-move-rect) (default-mouse-track-next-move-rect) (default-mouse-track-cleanup-hook) (default-mouse-track-cleanup-extent): * mule/ethio-util.el (ethio-fidel-to-sera-buffer) (ethio-modify-vowel): * obsolete.el: * package-get.el (package-get-update-all): * package-ui.el (pui-list-packages) (pui-install-selected-packages, pui-install-selected-packages): * select.el (select-make-extent-for-selection) (dehilight-selection): * simple.el (clone-buffer): * term/tvi970.el: * term/wyse50.el: * unicode.el: (load-unicode-tables): * x-font-menu.el (fc-make-font-menu-entry) (x-reset-device-font-menus-xft): * x-misc.el (x-init-specifier-from-resources): Eliminate byte-compile warnings, with the exception of Stephen's various non-defined fontconfig functions, as I don't know if he plans to add them and is keeping the warnings around as a reminder. The warnings actually eliminated involve i) using mapcar instead of mapc where the result is discarded and ii) using a lambda quoted as data in a context where it is unequivocally used as a function.
author Aidan Kehoe <kehoea@parhasard.net>
date Fri, 18 Dec 2009 17:49:43 +0000
parents e34711681f30
children 308d34e9f07d
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line source

;;; mule-x-init.el --- initialization code for X Windows under MULE -*- coding: iso-2022-7bit; -*-
;; Copyright (C) 1994 Free Software Foundation, Inc.
;; Copyright (C) 1996, 2002 Ben Wing <ben@xemacs.org>

;; Author: various
;; Keywords: mule X11

;; 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:

;;; Code:

;;; Work around what is arguably a Sun CDE bug.

;; #### This is unused, apparently.
(defun x-use-halfwidth-roman-font (fullwidth-charset roman-registry)
  "Maybe set charset registry of the 'ascii charset to ROMAN-REGISTRY.

Do this only if:
 - the current display is an X device
 - the displayed width of FULLWIDTH-CHARSET is twice the displayed
   width of the 'ascii charset, but only when using ROMAN-REGISTRY.

Traditionally, Asian characters have been displayed so that they
occupy exactly twice the screen space of ASCII (`halfwidth')
characters.  On many systems, e.g. Sun CDE systems, this can only be
achieved by using a national variant roman font to display ASCII."
  (flet ((charset-font-width (charset)
	   (font-instance-width
	    (face-font-instance 'default (selected-device) charset)))
	 
	 (twice-as-wide (cs1 cs2)
	   (let ((width1 (charset-font-width cs1))
		 (width2 (charset-font-width cs2)))
	     (and width1 width2 (eq (+ width1 width1) width2)))))

    (when (eq 'x (device-type))
      (let ((original-registries (charset-registries 'ascii)))
        (condition-case nil
            (unless (twice-as-wide 'ascii fullwidth-charset)
              (set-charset-registries 'ascii (vector roman-registry))
              (unless (twice-as-wide 'ascii fullwidth-charset)
                ;; Restore if roman-registry didn't help
                (set-charset-registries 'ascii original-registries)))
          (error (set-charset-registries 'ascii original-registries)))))))

;;;;