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1987 lines
76 KiB
EmacsLisp
1987 lines
76 KiB
EmacsLisp
;;; mule-cmds.el --- Commands for mulitilingual environment
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;; Copyright (C) 1995 Electrotechnical Laboratory, JAPAN.
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;; Licensed to the Free Software Foundation.
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;; Copyright (C) 2000 Free Software Foundation, Inc.
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;; Keywords: mule, multilingual
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Code:
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(eval-when-compile (defvar dos-codepage))
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;;; MULE related key bindings and menus.
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(defvar mule-keymap (make-sparse-keymap)
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"Keymap for Mule (Multilingual environment) specific commands.")
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;; Keep "C-x C-m ..." for mule specific commands.
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(define-key ctl-x-map "\C-m" mule-keymap)
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(define-key mule-keymap "f" 'set-buffer-file-coding-system)
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(define-key mule-keymap "t" 'set-terminal-coding-system)
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(define-key mule-keymap "k" 'set-keyboard-coding-system)
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(define-key mule-keymap "p" 'set-buffer-process-coding-system)
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(define-key mule-keymap "x" 'set-selection-coding-system)
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(define-key mule-keymap "X" 'set-next-selection-coding-system)
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(define-key mule-keymap "\C-\\" 'set-input-method)
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(define-key mule-keymap "c" 'universal-coding-system-argument)
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(define-key mule-keymap "l" 'set-language-environment)
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(define-key help-map "\C-L" 'describe-language-environment)
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(define-key help-map "L" 'describe-language-environment)
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(define-key help-map "\C-\\" 'describe-input-method)
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(define-key help-map "I" 'describe-input-method)
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(define-key help-map "C" 'describe-coding-system)
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(define-key help-map "h" 'view-hello-file)
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(defvar mule-menu-keymap
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(make-sparse-keymap "Mule (Multilingual Environment)")
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"Keymap for Mule (Multilingual environment) menu specific commands.")
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(defvar describe-language-environment-map
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(make-sparse-keymap "Describe Language Environment"))
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(defvar setup-language-environment-map
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(make-sparse-keymap "Set Language Environment"))
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(defvar set-coding-system-map
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(make-sparse-keymap "Set Coding System"))
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(define-key-after mule-menu-keymap [set-language-environment]
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(list 'menu-item "Set Language Environment" setup-language-environment-map
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:help "Multilingual environment suitable for a specific language"))
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(define-key-after mule-menu-keymap [mouse-set-font]
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'(menu-item "Set Font/Fontset" mouse-set-font
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:visible (fboundp 'generate-fontset-menu)
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:help "Select a font from list of known fonts/fontsets"))
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(define-key-after mule-menu-keymap [separator-mule]
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'("--")
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t)
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(define-key-after mule-menu-keymap [toggle-input-method]
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'(menu-item "Toggle Input Method" toggle-input-method)
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t)
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(define-key-after mule-menu-keymap [set-input-method]
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'(menu-item "Select Input Method..." set-input-method)
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t)
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(define-key-after mule-menu-keymap [describe-input-method]
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'(menu-item "Describe Input Method" describe-input-method))
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(define-key-after mule-menu-keymap [separator-input-method]
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'("--")
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t)
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(define-key-after mule-menu-keymap [set-various-coding-system]
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(list 'menu-item "Set Coding Systems" set-coding-system-map
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:enable 'enable-multibyte-characters))
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(define-key-after mule-menu-keymap [view-hello-file]
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'(menu-item "Show Multi-lingual Text" view-hello-file
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:enable (file-readable-p
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(expand-file-name "HELLO" data-directory))
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:help "Display file which says HELLO in many languages")
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t)
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(define-key-after mule-menu-keymap [separator-coding-system]
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'("--")
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t)
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(define-key-after mule-menu-keymap [describe-language-environment]
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(list 'menu-item "Describe Language Environment"
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describe-language-environment-map
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:help "Show multilingual settings for a specific language")
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t)
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(define-key-after mule-menu-keymap [describe-input-method]
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'(menu-item "Describe Input Method..." describe-input-method
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:help "Keyboard layout for a specific input method")
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t)
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(define-key-after mule-menu-keymap [describe-coding-system]
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'(menu-item "Describe Coding System..." describe-coding-system)
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t)
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(define-key-after mule-menu-keymap [list-character-sets]
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'(menu-item "List Character Sets" list-character-sets
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:help "Show table of available character sets"))
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(define-key-after mule-menu-keymap [mule-diag]
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'(menu-item "Show All of Mule Status" mule-diag
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:help "Display multilingual environment settings")
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t)
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(define-key-after set-coding-system-map [set-buffer-file-coding-system]
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'(menu-item "For Saving this Buffer" set-buffer-file-coding-system
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:help "How to encode this buffer on disk")
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t)
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(define-key-after set-coding-system-map [universal-coding-system-argument]
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'(menu-item "For Next Command" universal-coding-system-argument
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:help "Coding system to be used by next command")
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t)
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(define-key-after set-coding-system-map [set-terminal-coding-system]
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'(menu-item "For Terminal" set-terminal-coding-system
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:enable (null (memq window-system '(x w32 mac)))
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:help "How to encode terminal output")
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t)
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(define-key-after set-coding-system-map [set-keyboard-coding-system]
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'(menu-item "For Keyboard" set-keyboard-coding-system
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:help "How to decode keyboard input")
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t)
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(define-key-after set-coding-system-map [set-buffer-process-coding-system]
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'(menu-item "For I/O with Subprocess" set-buffer-process-coding-system
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:visible (fboundp 'start-process)
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:enable (get-buffer-process (current-buffer))
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:help "How to en/decode I/O from/to subprocess connected to this buffer")
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t)
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(define-key-after set-coding-system-map [set-selection-coding-system]
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'(menu-item "For X Selections/Clipboard" set-selection-coding-system
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:visible (display-selections-p)
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:help "How to en/decode data to/from selection/clipboard")
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t)
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(define-key-after set-coding-system-map [set-next-selection-coding-system]
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'(menu-item "For Next X Selection" set-next-selection-coding-system
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:visible (display-selections-p)
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:help "How to en/decode next selection/clipboard operation")
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t)
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(define-key setup-language-environment-map
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[Default] '(menu-item "Default" setup-specified-language-environment))
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(define-key describe-language-environment-map
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[Default] '(menu-item "Default" describe-specified-language-support))
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;; This should be a single character key binding because users use it
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;; very frequently while editing multilingual text. Now we can use
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;; only two such keys: "\C-\\" and "\C-^", but the latter is not
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;; convenient because it requires shifting on most keyboards. An
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;; alternative is "\C-\]" which is now bound to `abort-recursive-edit'
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;; but it won't be used that frequently.
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(define-key global-map "\C-\\" 'toggle-input-method)
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;;; This is no good because people often type Shift-SPC
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;;; meaning to type SPC. -- rms.
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;;; ;; Here's an alternative key binding for X users (Shift-SPACE).
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;;; (define-key global-map [?\S- ] 'toggle-input-method)
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;;; Mule related hyperlinks.
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(defconst help-xref-mule-regexp-template
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(purecopy (concat "\\(\\<\\("
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"\\(coding system\\)\\|"
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"\\(input method\\)\\|"
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"\\(character set\\)\\|"
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"\\(charset\\)"
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"\\)\\s-+\\)?"
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;; Note starting with word-syntax character:
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"`\\(\\sw\\(\\sw\\|\\s_\\)+\\)'")))
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(defun coding-system-change-eol-conversion (coding-system eol-type)
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"Return a coding system which differs from CODING-SYSTEM in eol conversion.
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The returned coding system converts end-of-line by EOL-TYPE
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but text as the same way as CODING-SYSTEM.
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EOL-TYPE should be `unix', `dos', `mac', or nil.
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If EOL-TYPE is nil, the returned coding system detects
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how end-of-line is formatted automatically while decoding.
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EOL-TYPE can be specified by an integer 0, 1, or 2.
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They means `unix', `dos', and `mac' respectively."
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(if (symbolp eol-type)
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(setq eol-type (cond ((eq eol-type 'unix) 0)
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((eq eol-type 'dos) 1)
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((eq eol-type 'mac) 2)
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(t eol-type))))
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(let ((orig-eol-type (coding-system-eol-type coding-system)))
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(if (vectorp orig-eol-type)
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(if (not eol-type)
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coding-system
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(aref orig-eol-type eol-type))
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(let ((base (coding-system-base coding-system)))
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(if (not eol-type)
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base
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(if (= eol-type orig-eol-type)
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coding-system
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(setq orig-eol-type (coding-system-eol-type base))
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(if (vectorp orig-eol-type)
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(aref orig-eol-type eol-type))))))))
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(defun coding-system-change-text-conversion (coding-system coding)
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"Return a coding system which differs from CODING-SYSTEM in text conversion.
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The returned coding system converts text by CODING
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but end-of-line as the same way as CODING-SYSTEM.
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If CODING is nil, the returned coding system detects
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how text is formatted automatically while decoding."
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(if (not coding)
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(coding-system-base coding-system)
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(let ((eol-type (coding-system-eol-type coding-system)))
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(coding-system-change-eol-conversion
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coding
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(if (numberp eol-type) (aref [unix dos mac] eol-type))))))
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(defun toggle-enable-multibyte-characters (&optional arg)
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"Change whether this buffer uses multibyte characters.
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With arg, use multibyte characters if the arg is positive.
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Note that this command does not convert the byte contents of
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the buffer; it only changes the way those bytes are interpreted.
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In general, therefore, this command *changes* the sequence of
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characters that the current buffer contains.
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We suggest you avoid using use this command unless you know what you
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are doing. If you use it by mistake, and the buffer is now displayed
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wrong, use this command again to toggle back to the right mode."
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(interactive "P")
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(let ((new-flag
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(if (null arg) (null enable-multibyte-characters)
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(> (prefix-numeric-value arg) 0))))
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(set-buffer-multibyte new-flag))
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(force-mode-line-update))
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(defun view-hello-file ()
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"Display the HELLO file which list up many languages and characters."
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(interactive)
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;; We have to decode the file in any environment.
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(let ((default-enable-multibyte-characters t)
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(coding-system-for-read 'iso-2022-7bit))
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(find-file-read-only (expand-file-name "HELLO" data-directory))))
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(defun universal-coding-system-argument ()
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"Execute an I/O command using the specified coding system."
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(interactive)
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(let* ((default (and buffer-file-coding-system
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(not (eq (coding-system-type buffer-file-coding-system)
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t))
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buffer-file-coding-system))
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(coding-system (read-coding-system
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(if default
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(format "Coding system for following command (default, %s): " default)
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"Coding system for following command: ")
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default))
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(keyseq (read-key-sequence
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(format "Command to execute with %s:" coding-system)))
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(cmd (key-binding keyseq)))
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(let ((coding-system-for-read coding-system)
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(coding-system-for-write coding-system))
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(message "")
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(call-interactively cmd))))
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(defun set-default-coding-systems (coding-system)
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"Set default value of various coding systems to CODING-SYSTEM.
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This sets the following coding systems:
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o coding system of a newly created buffer
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o default coding system for subprocess I/O
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This also sets the following values:
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o default value used as file-name-coding-system for converting file names.
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o default value for the command `set-terminal-coding-system' (not on MSDOS)
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o default value for the command `set-keyboard-coding-system'."
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(check-coding-system coding-system)
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(setq-default buffer-file-coding-system coding-system)
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(if default-enable-multibyte-characters
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(setq default-file-name-coding-system coding-system))
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;; If coding-system is nil, honor that on MS-DOS as well, so
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;; that they could reset the terminal coding system.
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(unless (and (eq window-system 'pc) coding-system)
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(setq default-terminal-coding-system coding-system))
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(setq default-keyboard-coding-system coding-system)
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(setq default-process-coding-system (cons coding-system coding-system)))
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(defalias 'update-iso-coding-systems 'update-coding-systems-internal)
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(make-obsolete 'update-iso-coding-systems 'update-coding-systems-internal "20.3")
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(defun prefer-coding-system (coding-system)
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"Add CODING-SYSTEM at the front of the priority list for automatic detection.
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This also sets the following coding systems:
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o coding system of a newly created buffer
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o default coding system for subprocess I/O
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This also sets the following values:
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o default value used as file-name-coding-system for converting file names.
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o default value for the command `set-terminal-coding-system' (not on MSDOS)
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o default value for the command `set-keyboard-coding-system'
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If CODING-SYSTEM specifies a certain type of EOL conversion, the coding
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systems set by this function will use that type of EOL conversion.
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This command does not change the default value of terminal coding system
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for MS-DOS terminal, because DOS terminals only support a single coding
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system, and Emacs automatically sets the default to that coding system at
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startup."
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(interactive "zPrefer coding system: ")
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(if (not (and coding-system (coding-system-p coding-system)))
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(error "Invalid coding system `%s'" coding-system))
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(let ((coding-category (coding-system-category coding-system))
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(base (coding-system-base coding-system))
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(eol-type (coding-system-eol-type coding-system)))
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(if (not coding-category)
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;; CODING-SYSTEM is no-conversion or undecided.
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(error "Can't prefer the coding system `%s'" coding-system))
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(set coding-category (or base coding-system))
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(update-coding-systems-internal)
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(or (eq coding-category (car coding-category-list))
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;; We must change the order.
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(set-coding-priority (list coding-category)))
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(if (and base (interactive-p))
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(message "Highest priority is set to %s (base of %s)"
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base coding-system))
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;; If they asked for specific EOL conversion, honor that.
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(if (memq eol-type '(0 1 2))
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(setq coding-system
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(coding-system-change-eol-conversion base eol-type))
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(setq coding-system base))
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(set-default-coding-systems coding-system)))
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(defvar sort-coding-systems-predicate nil
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"If non-nil, a predicate function to sort coding systems.
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It is called with two coding systems, and should return t if the first
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one is \"less\" than the second.
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The function `sort-coding-systems' use it.")
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(defun sort-coding-systems (codings)
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"Sort coding system list CODINGS by a priority of each coding system.
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If a coding system is most preferred, it has the highest priority.
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Otherwise, a coding system corresponds to some MIME charset has higher
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priorities. Among them, a coding system included in `coding-system'
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key of the current language environment has higher priorities. See
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also the documentation of `language-info-alist'.
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If the variable `sort-coding-systems-predicate' (which see) is
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non-nil, it is used to sort CODINGS in the different way than above."
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(if sort-coding-systems-predicate
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(sort codings sort-coding-systems-predicate)
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(let* ((most-preferred (symbol-value (car coding-category-list)))
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(lang-preferred (get-language-info current-language-environment
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'coding-system))
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(func (function
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(lambda (x)
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(let ((base (coding-system-base x)))
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(+ (if (eq base most-preferred) 64 0)
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(let ((mime (coding-system-get base 'mime-charset)))
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(if mime
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(if (string-match "^x-" (symbol-name mime))
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16 32)
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0))
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(if (memq base lang-preferred) 8 0)
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(if (string-match "-with-esc$" (symbol-name base))
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0 4)
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(if (eq (coding-system-type base) 2)
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;; For ISO based coding systems, prefer
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;; one that doesn't use escape sequences.
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(let ((flags (coding-system-flags base)))
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(if (or (consp (aref flags 0))
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(consp (aref flags 1))
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(consp (aref flags 2))
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(consp (aref flags 3)))
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(if (or (aref flags 8) (aref flags 9))
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0
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1)
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2))
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1)))))))
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(sort codings (function (lambda (x y)
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(> (funcall func x) (funcall func y))))))))
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(defun find-coding-systems-region (from to)
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"Return a list of proper coding systems to encode a text between FROM and TO.
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All coding systems in the list can safely encode any multibyte characters
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in the text.
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If the text contains no multibyte characters, return a list of a single
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element `undecided'."
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(let ((codings (find-coding-systems-region-internal from to)))
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(if (eq codings t)
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;; The text contains only ASCII characters. Any coding
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;; systems are safe.
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'(undecided)
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;; We need copy-sequence because sorting will alter the argument.
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(sort-coding-systems (copy-sequence codings)))))
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(defun find-coding-systems-string (string)
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"Return a list of proper coding systems to encode STRING.
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All coding systems in the list can safely encode any multibyte characters
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in STRING.
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If STRING contains no multibyte characters, return a list of a single
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element `undecided'."
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(find-coding-systems-region string nil))
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(defun find-coding-systems-for-charsets (charsets)
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"Return a list of proper coding systems to encode characters of CHARSETS.
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CHARSETS is a list of character sets."
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(cond ((or (null charsets)
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(and (= (length charsets) 1)
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(eq 'ascii (car charsets))))
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'(undecided))
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((or (memq 'eight-bit-control charsets)
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(memq 'eight-bit-graphic charsets))
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'(raw-text emacs-mule))
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(t
|
||
(let ((codings t)
|
||
charset l ll)
|
||
(while (and codings charsets)
|
||
(setq charset (car charsets) charsets (cdr charsets))
|
||
(unless (eq charset 'ascii)
|
||
(setq l (aref char-coding-system-table (make-char charset)))
|
||
(if (eq codings t)
|
||
(setq codings l)
|
||
(let ((ll nil))
|
||
(while codings
|
||
(if (memq (car codings) l)
|
||
(setq ll (cons (car codings) ll)))
|
||
(setq codings (cdr codings)))
|
||
(setq codings ll)))))
|
||
(append codings
|
||
(char-table-extra-slot char-coding-system-table 0))))))
|
||
|
||
(defun find-multibyte-characters (from to &optional maxcount excludes)
|
||
"Find multibyte characters in the region specified by FROM and TO.
|
||
If FROM is a string, find multibyte characters in the string.
|
||
The return value is an alist of the following format:
|
||
((CHARSET COUNT CHAR ...) ...)
|
||
where
|
||
CHARSET is a character set,
|
||
COUNT is a number of characters,
|
||
CHARs are found characters of the character set.
|
||
Optional 3rd arg MAXCOUNT limits how many CHARs are put in the above list.
|
||
Optional 4th arg EXCLUDE is a list of character sets to be ignored.
|
||
|
||
For invalid characters, CHARs are actually strings."
|
||
(let ((chars nil)
|
||
charset char)
|
||
(if (stringp from)
|
||
(let ((idx 0))
|
||
(while (setq idx (string-match "[^\000-\177]" from idx))
|
||
(setq char (aref from idx)
|
||
charset (char-charset char))
|
||
(if (eq charset 'unknown)
|
||
(setq char (match-string 0)))
|
||
(if (or (memq charset '(unknown
|
||
eight-bit-control eight-bit-graphic))
|
||
(not (or (eq excludes t) (memq charset excludes))))
|
||
(let ((slot (assq charset chars)))
|
||
(if slot
|
||
(if (not (memq char (nthcdr 2 slot)))
|
||
(let ((count (nth 1 slot)))
|
||
(setcar (cdr slot) (1+ count))
|
||
(if (or (not maxcount) (< count maxcount))
|
||
(nconc slot (list char)))))
|
||
(setq chars (cons (list charset 1 char) chars)))))
|
||
(setq idx (1+ idx))))
|
||
(save-excursion
|
||
(goto-char from)
|
||
(while (re-search-forward "[^\000-\177]" to t)
|
||
(setq char (preceding-char)
|
||
charset (char-charset char))
|
||
(if (eq charset 'unknown)
|
||
(setq char (match-string 0)))
|
||
(if (or (memq charset '(unknown eight-bit-control eight-bit-graphic))
|
||
(not (or (eq excludes t) (memq charset excludes))))
|
||
(let ((slot (assq charset chars)))
|
||
(if slot
|
||
(if (not (member char (nthcdr 2 slot)))
|
||
(let ((count (nth 1 slot)))
|
||
(setcar (cdr slot) (1+ count))
|
||
(if (or (not maxcount) (< count maxcount))
|
||
(nconc slot (list char)))))
|
||
(setq chars (cons (list charset 1 char) chars))))))))
|
||
(nreverse chars)))
|
||
|
||
(defvar last-coding-system-specified nil
|
||
"Most recent coding system explicitly specified by the user when asked.
|
||
This variable is set whenever Emacs asks the user which coding system
|
||
to use in order to write a file. If you set it to nil explicitly,
|
||
then call `write-region', then afterward this variable will be non-nil
|
||
only if the user was explicitly asked and specified a coding system.")
|
||
|
||
(defvar select-safe-coding-system-accept-default-p nil
|
||
"If non-nil, a function to control the behaviour of coding system selection.
|
||
The meaning is the same as the argument ACCEPT-DEFAULT-P of the
|
||
function `select-safe-coding-system' (which see). This variable
|
||
overrides that argument.")
|
||
|
||
(defun select-safe-coding-system (from to &optional default-coding-system
|
||
accept-default-p)
|
||
"Ask a user to select a safe coding system from candidates.
|
||
The candidates of coding systems which can safely encode a text
|
||
between FROM and TO are shown in a popup window. Among them, the most
|
||
proper one is suggested as the default.
|
||
|
||
The list of `buffer-file-coding-system' of the current buffer and the
|
||
most preferred coding system (if it corresponds to a MIME charset) is
|
||
treated as the default coding system list. Among them, the first one
|
||
that safely encodes the text is silently selected and returned without
|
||
any user interaction. See also the command `prefer-coding-system'.
|
||
|
||
Optional 3rd arg DEFAULT-CODING-SYSTEM specifies a coding system or a
|
||
list of coding systems to be prepended to the default coding system
|
||
list.
|
||
|
||
Optional 4th arg ACCEPT-DEFAULT-P, if non-nil, is a function to
|
||
determine the acceptability of the silently selected coding system.
|
||
It is called with that coding system, and should return nil if it
|
||
should not be silently selected and thus user interaction is required.
|
||
|
||
The variable `select-safe-coding-system-accept-default-p', if
|
||
non-nil, overrides ACCEPT-DEFAULT-P.
|
||
|
||
Kludgy feature: if FROM is a string, the string is the target text,
|
||
and TO is ignored."
|
||
(if (and default-coding-system
|
||
(not (listp default-coding-system)))
|
||
(setq default-coding-system (list default-coding-system)))
|
||
|
||
;; Change elements of the list to (coding . base-coding).
|
||
(setq default-coding-system
|
||
(mapcar (function (lambda (x) (cons x (coding-system-base x))))
|
||
default-coding-system))
|
||
|
||
;; If buffer-file-coding-system is not nil nor undecided, append it
|
||
;; to the defaults.
|
||
(if buffer-file-coding-system
|
||
(let ((base (coding-system-base buffer-file-coding-system)))
|
||
(or (eq base 'undecided)
|
||
(assq buffer-file-coding-system default-coding-system)
|
||
(rassq base default-coding-system)
|
||
(setq default-coding-system
|
||
(append default-coding-system
|
||
(list (cons buffer-file-coding-system base)))))))
|
||
|
||
;; If the most preferred coding system has the property mime-charset,
|
||
;; append it to the defaults.
|
||
(let* ((preferred (symbol-value (car coding-category-list)))
|
||
(base (coding-system-base preferred)))
|
||
(and (coding-system-get preferred 'mime-charset)
|
||
(not (assq preferred default-coding-system))
|
||
(not (rassq base default-coding-system))
|
||
(setq default-coding-system
|
||
(append default-coding-system (list (cons preferred base))))))
|
||
|
||
(if select-safe-coding-system-accept-default-p
|
||
(setq accept-default-p select-safe-coding-system-accept-default-p))
|
||
|
||
(let ((codings (find-coding-systems-region from to))
|
||
(coding-system nil)
|
||
(l default-coding-system))
|
||
(if (eq (car codings) 'undecided)
|
||
;; Any coding system is ok.
|
||
(setq coding-system t)
|
||
;; Try the defaults.
|
||
(while (and l (not coding-system))
|
||
(if (memq (cdr (car l)) codings)
|
||
(setq coding-system (car (car l)))
|
||
(setq l (cdr l))))
|
||
(if (and coding-system accept-default-p)
|
||
(or (funcall accept-default-p coding-system)
|
||
(setq coding-system (list coding-system)))))
|
||
|
||
;; If all the defaults failed, ask a user.
|
||
(when (or (not coding-system) (consp coding-system))
|
||
;; At first, change each coding system to the corresponding
|
||
;; mime-charset name if it is also a coding system. Such a name
|
||
;; is more friendly to users.
|
||
(let ((l codings)
|
||
mime-charset)
|
||
(while l
|
||
(setq mime-charset (coding-system-get (car l) 'mime-charset))
|
||
(if (and mime-charset (coding-system-p mime-charset))
|
||
(setcar l mime-charset))
|
||
(setq l (cdr l))))
|
||
|
||
;; Then ask users to select one form CODINGS.
|
||
(unwind-protect
|
||
(save-window-excursion
|
||
(with-output-to-temp-buffer "*Warning*"
|
||
(save-excursion
|
||
(set-buffer standard-output)
|
||
(insert "These default coding systems were tried")
|
||
(if (stringp from)
|
||
(insert " to encode \""
|
||
(if (> (length from) 10)
|
||
(substring from 0 10)
|
||
from)
|
||
"...\""))
|
||
(insert ":\n")
|
||
(let ((pos (point))
|
||
(fill-prefix " "))
|
||
(mapcar (function (lambda (x) (princ " ") (princ (car x))))
|
||
default-coding-system)
|
||
(insert "\n")
|
||
(fill-region-as-paragraph pos (point)))
|
||
(insert
|
||
(if (consp coding-system)
|
||
(concat (format "%s safely encodes the target text,\n"
|
||
(car coding-system))
|
||
"but it is not recommended for encoding text in this context,\n"
|
||
"e.g., for sending an email message.\n")
|
||
"However, none of them safely encodes the target text.\n"))
|
||
(insert (if (consp coding-system)
|
||
"\nSelect the above, or "
|
||
"\nSelect ")
|
||
"one of the following safe coding systems:\n")
|
||
(let ((pos (point))
|
||
(fill-prefix " "))
|
||
(mapcar (function (lambda (x) (princ " ") (princ x)))
|
||
codings)
|
||
(insert "\n")
|
||
(fill-region-as-paragraph pos (point)))))
|
||
|
||
;; Read a coding system.
|
||
(if (consp coding-system)
|
||
(setq codings (cons (car coding-system) codings)))
|
||
(let* ((safe-names (mapcar (lambda (x) (list (symbol-name x)))
|
||
codings))
|
||
(name (completing-read
|
||
(format "Select coding system (default %s): "
|
||
(car codings))
|
||
safe-names nil t nil nil
|
||
(car (car safe-names)))))
|
||
(setq last-coding-system-specified (intern name)
|
||
coding-system last-coding-system-specified)))
|
||
(kill-buffer "*Warning*")))
|
||
|
||
(if (vectorp (coding-system-eol-type coding-system))
|
||
(let ((eol (coding-system-eol-type buffer-file-coding-system)))
|
||
(if (numberp eol)
|
||
(setq coding-system
|
||
(coding-system-change-eol-conversion coding-system eol)))))
|
||
|
||
(if (eq coding-system t)
|
||
(setq coding-system buffer-file-coding-system))
|
||
coding-system))
|
||
|
||
(setq select-safe-coding-system-function 'select-safe-coding-system)
|
||
|
||
(defun select-message-coding-system ()
|
||
"Return a coding system to encode the outgoing message of the current buffer.
|
||
It at first tries the first coding system found in these variables
|
||
in this order:
|
||
(1) local value of `buffer-file-coding-system'
|
||
(2) value of `sendmail-coding-system'
|
||
(3) value of `default-sendmail-coding-system'
|
||
(4) value of `default-buffer-file-coding-system'
|
||
If the found coding system can't encode the current buffer,
|
||
or none of them are bound to a coding system,
|
||
it asks the user to select a proper coding system."
|
||
(let ((coding (or (and (local-variable-p 'buffer-file-coding-system)
|
||
buffer-file-coding-system)
|
||
sendmail-coding-system
|
||
default-sendmail-coding-system
|
||
default-buffer-file-coding-system)))
|
||
(if (eq coding 'no-conversion)
|
||
;; We should never use no-conversion for outgoing mails.
|
||
(setq coding nil))
|
||
(if (fboundp select-safe-coding-system-function)
|
||
(funcall select-safe-coding-system-function
|
||
(point-min) (point-max) coding
|
||
(function (lambda (x) (coding-system-get x 'mime-charset))))
|
||
coding)))
|
||
|
||
;;; Language support stuff.
|
||
|
||
(defvar language-info-alist nil
|
||
"Alist of language environment definitions.
|
||
Each element looks like:
|
||
(LANGUAGE-NAME . ((KEY . INFO) ...))
|
||
where LANGUAGE-NAME is a string, the name of the language environment,
|
||
KEY is a symbol denoting the kind of information, and
|
||
INFO is the data associated with KEY.
|
||
Meaningful values for KEY include
|
||
|
||
documentation value is documentation of what this language environment
|
||
is meant for, and how to use it.
|
||
charset value is a list of the character sets used by this
|
||
language environment.
|
||
sample-text value is one line of text,
|
||
written using those character sets,
|
||
appropriate for this language environment.
|
||
setup-function value is a function to call to switch to this
|
||
language environment.
|
||
exit-function value is a function to call to leave this
|
||
language environment.
|
||
coding-system value is a list of coding systems that are good
|
||
for saving text written in this language environment.
|
||
This list serves as suggestions to the user;
|
||
in effect, as a kind of documentation.
|
||
coding-priority value is a list of coding systems for this language
|
||
environment, in order of decreasing priority.
|
||
This is used to set up the coding system priority
|
||
list when you switch to this language environment.
|
||
nonascii-translation
|
||
value is a translation table to be set in the
|
||
variable `nonascii-translation-table' in this
|
||
language environment, or a character set from
|
||
which `nonascii-insert-offset' is calculated.
|
||
input-method value is a default input method for this language
|
||
environment.
|
||
features value is a list of features requested in this
|
||
language environment.
|
||
|
||
The following keys take effect only when multibyte characters are
|
||
globally disabled, i.e. the value of `default-enable-multibyte-characters'
|
||
is nil.
|
||
|
||
unibyte-syntax value is a library name to load to set
|
||
unibyte 8-bit character syntaxes for this
|
||
language environment.
|
||
|
||
unibyte-display value is a coding system to encode characters
|
||
for the terminal. Characters in the range
|
||
of 160 to 255 display not as octal escapes,
|
||
but as non-ASCII characters in this language
|
||
environment.")
|
||
|
||
(defun get-language-info (lang-env key)
|
||
"Return information listed under KEY for language environment LANG-ENV.
|
||
KEY is a symbol denoting the kind of information.
|
||
For a list of useful values for KEY and their meanings,
|
||
see `language-info-alist'."
|
||
(if (symbolp lang-env)
|
||
(setq lang-env (symbol-name lang-env)))
|
||
(let ((lang-slot (assoc-ignore-case lang-env language-info-alist)))
|
||
(if lang-slot
|
||
(cdr (assq key (cdr lang-slot))))))
|
||
|
||
(defun set-language-info (lang-env key info)
|
||
"Modify part of the definition of language environment LANG-ENV.
|
||
Specifically, this stores the information INFO under KEY
|
||
in the definition of this language environment.
|
||
KEY is a symbol denoting the kind of information.
|
||
INFO is the value for that information.
|
||
|
||
For a list of useful values for KEY and their meanings,
|
||
see `language-info-alist'."
|
||
(if (symbolp lang-env)
|
||
(setq lang-env (symbol-name lang-env)))
|
||
(let (lang-slot key-slot)
|
||
(setq lang-slot (assoc lang-env language-info-alist))
|
||
(if (null lang-slot) ; If no slot for the language, add it.
|
||
(setq lang-slot (list lang-env)
|
||
language-info-alist (cons lang-slot language-info-alist)))
|
||
(setq key-slot (assq key lang-slot))
|
||
(if (null key-slot) ; If no slot for the key, add it.
|
||
(progn
|
||
(setq key-slot (list key))
|
||
(setcdr lang-slot (cons key-slot (cdr lang-slot)))))
|
||
(setcdr key-slot (purecopy info))))
|
||
|
||
(defun set-language-info-alist (lang-env alist &optional parents)
|
||
"Store ALIST as the definition of language environment LANG-ENV.
|
||
ALIST is an alist of KEY and INFO values. See the documentation of
|
||
`language-info-alist' for the meanings of KEY and INFO.
|
||
|
||
Optional arg PARENTS is a list of parent menu names; it specifies
|
||
where to put this language environment in the
|
||
Describe Language Environment and Set Language Environment menus.
|
||
For example, (\"European\") means to put this language environment
|
||
in the European submenu in each of those two menus."
|
||
(if (symbolp lang-env)
|
||
(setq lang-env (symbol-name lang-env)))
|
||
(let ((describe-map describe-language-environment-map)
|
||
(setup-map setup-language-environment-map))
|
||
(if parents
|
||
(let ((l parents)
|
||
map parent-symbol parent prompt)
|
||
(while l
|
||
(if (symbolp (setq parent-symbol (car l)))
|
||
(setq parent (symbol-name parent))
|
||
(setq parent parent-symbol parent-symbol (intern parent)))
|
||
(setq map (lookup-key describe-map (vector parent-symbol)))
|
||
;; This prompt string is for define-prefix-command, so
|
||
;; that the map it creates will be suitable for a menu.
|
||
(or map (setq prompt (format "%s Environment" parent)))
|
||
(if (not map)
|
||
(progn
|
||
(setq map (intern (format "describe-%s-environment-map"
|
||
(downcase parent))))
|
||
(define-prefix-command map nil prompt)
|
||
(define-key-after describe-map (vector parent-symbol)
|
||
(cons parent map) t)))
|
||
(setq describe-map (symbol-value map))
|
||
(setq map (lookup-key setup-map (vector parent-symbol)))
|
||
(if (not map)
|
||
(progn
|
||
(setq map (intern (format "setup-%s-environment-map"
|
||
(downcase parent))))
|
||
(define-prefix-command map nil prompt)
|
||
(define-key-after setup-map (vector parent-symbol)
|
||
(cons parent map) t)))
|
||
(setq setup-map (symbol-value map))
|
||
(setq l (cdr l)))))
|
||
|
||
;; Set up menu items for this language env.
|
||
(let ((doc (assq 'documentation alist)))
|
||
(when doc
|
||
(define-key-after describe-map (vector (intern lang-env))
|
||
(cons lang-env 'describe-specified-language-support) t)))
|
||
(define-key-after setup-map (vector (intern lang-env))
|
||
(cons lang-env 'setup-specified-language-environment) t)
|
||
|
||
(while alist
|
||
(set-language-info lang-env (car (car alist)) (cdr (car alist)))
|
||
(setq alist (cdr alist)))))
|
||
|
||
(defun read-language-name (key prompt &optional default)
|
||
"Read a language environment name which has information for KEY.
|
||
If KEY is nil, read any language environment.
|
||
Prompt with PROMPT. DEFAULT is the default choice of language environment.
|
||
This returns a language environment name as a string."
|
||
(let* ((completion-ignore-case t)
|
||
(name (completing-read prompt
|
||
language-info-alist
|
||
(and key
|
||
(function (lambda (elm) (assq key elm))))
|
||
t nil nil default)))
|
||
(if (and (> (length name) 0)
|
||
(or (not key)
|
||
(get-language-info name key)))
|
||
name)))
|
||
|
||
;;; Multilingual input methods.
|
||
(defgroup leim nil
|
||
"LEIM: Libraries of Emacs Input Methods."
|
||
:group 'mule)
|
||
|
||
(defconst leim-list-file-name "leim-list.el"
|
||
"Name of LEIM list file.
|
||
This file contains a list of libraries of Emacs input methods (LEIM)
|
||
in the format of Lisp expression for registering each input method.
|
||
Emacs loads this file at startup time.")
|
||
|
||
(defvar leim-list-header (format
|
||
";;; %s -- list of LEIM (Library of Emacs Input Method)
|
||
;;
|
||
;; This file contains a list of LEIM (Library of Emacs Input Method)
|
||
;; in the same directory as this file. Loading this file registers
|
||
;; the whole input methods in Emacs.
|
||
;;
|
||
;; Each entry has the form:
|
||
;; (register-input-method
|
||
;; INPUT-METHOD LANGUAGE-NAME ACTIVATE-FUNC
|
||
;; TITLE DESCRIPTION
|
||
;; ARG ...)
|
||
;; See the function `register-input-method' for the meanings of arguments.
|
||
;;
|
||
;; If this directory is included in load-path, Emacs automatically
|
||
;; loads this file at startup time.
|
||
|
||
"
|
||
leim-list-file-name)
|
||
"Header to be inserted in LEIM list file.")
|
||
|
||
(defvar leim-list-entry-regexp "^(register-input-method"
|
||
"Regexp matching head of each entry in LEIM list file.
|
||
See also the variable `leim-list-header'")
|
||
|
||
(defvar update-leim-list-functions
|
||
'(quail-update-leim-list-file)
|
||
"List of functions to call to update LEIM list file.
|
||
Each function is called with one arg, LEIM directory name.")
|
||
|
||
(defun update-leim-list-file (&rest dirs)
|
||
"Update LEIM list file in directories DIRS."
|
||
(let ((functions update-leim-list-functions))
|
||
(while functions
|
||
(apply (car functions) dirs)
|
||
(setq functions (cdr functions)))))
|
||
|
||
(defvar current-input-method nil
|
||
"The current input method for multilingual text.
|
||
If nil, that means no input method is activated now.")
|
||
(make-variable-buffer-local 'current-input-method)
|
||
(put 'current-input-method 'permanent-local t)
|
||
|
||
(defvar current-input-method-title nil
|
||
"Title string of the current input method shown in mode line.")
|
||
(make-variable-buffer-local 'current-input-method-title)
|
||
(put 'current-input-method-title 'permanent-local t)
|
||
|
||
(defcustom default-input-method nil
|
||
"*Default input method for multilingual text (a string).
|
||
This is the input method activated automatically by the command
|
||
`toggle-input-method' (\\[toggle-input-method])."
|
||
:group 'mule
|
||
:type '(choice (const nil) string)
|
||
:set-after '(current-language-environment))
|
||
|
||
(put 'input-method-function 'permanent-local t)
|
||
|
||
(defvar input-method-history nil
|
||
"History list for some commands that read input methods.")
|
||
(make-variable-buffer-local 'input-method-history)
|
||
(put 'input-method-history 'permanent-local t)
|
||
|
||
(defvar inactivate-current-input-method-function nil
|
||
"Function to call for inactivating the current input method.
|
||
Every input method should set this to an appropriate value when activated.
|
||
This function is called with no argument.
|
||
|
||
This function should never change the value of `current-input-method'.
|
||
It is set to nil by the function `inactivate-input-method'.")
|
||
(make-variable-buffer-local 'inactivate-current-input-method-function)
|
||
(put 'inactivate-current-input-method-function 'permanent-local t)
|
||
|
||
(defvar describe-current-input-method-function nil
|
||
"Function to call for describing the current input method.
|
||
This function is called with no argument.")
|
||
(make-variable-buffer-local 'describe-current-input-method-function)
|
||
(put 'describe-current-input-method-function 'permanent-local t)
|
||
|
||
(defvar input-method-alist nil
|
||
"Alist of input method names vs how to use them.
|
||
Each element has the form:
|
||
(INPUT-METHOD LANGUAGE-ENV ACTIVATE-FUNC TITLE DESCRIPTION ARGS...)
|
||
See the function `register-input-method' for the meanings of the elements.")
|
||
|
||
(defun register-input-method (input-method lang-env &rest args)
|
||
"Register INPUT-METHOD as an input method for language environment ENV.
|
||
INPUT-METHOD and LANG-ENV are symbols or strings.
|
||
|
||
The remaining arguments are:
|
||
ACTIVATE-FUNC, TITLE, DESCRIPTION, and ARGS...
|
||
ACTIVATE-FUNC is a function to call to activate this method.
|
||
TITLE is a string to show in the mode line when this method is active.
|
||
DESCRIPTION is a string describing this method and what it is good for.
|
||
The ARGS, if any, are passed as arguments to ACTIVATE-FUNC.
|
||
All told, the arguments to ACTIVATE-FUNC are INPUT-METHOD and the ARGS.
|
||
|
||
This function is mainly used in the file \"leim-list.el\" which is
|
||
created at building time of emacs, registering all quail input methods
|
||
contained in the emacs distribution.
|
||
|
||
In case you want to register a new quail input method by yourself, be
|
||
careful to use the same input method title as given in the third
|
||
parameter of `quail-define-package' (if the values are different, the
|
||
string specified in this function takes precedence).
|
||
|
||
The commands `describe-input-method' and `list-input-methods' need
|
||
this duplicated values to show some information about input methods
|
||
without loading the affected quail packages."
|
||
(if (symbolp lang-env)
|
||
(setq lang-env (symbol-name lang-env)))
|
||
(if (symbolp input-method)
|
||
(setq input-method (symbol-name input-method)))
|
||
(let ((info (cons lang-env args))
|
||
(slot (assoc input-method input-method-alist)))
|
||
(if slot
|
||
(setcdr slot info)
|
||
(setq slot (cons input-method info))
|
||
(setq input-method-alist (cons slot input-method-alist)))))
|
||
|
||
(defun read-input-method-name (prompt &optional default inhibit-null)
|
||
"Read a name of input method from a minibuffer prompting with PROMPT.
|
||
If DEFAULT is non-nil, use that as the default,
|
||
and substitute it into PROMPT at the first `%s'.
|
||
If INHIBIT-NULL is non-nil, null input signals an error.
|
||
|
||
The return value is a string."
|
||
(if default
|
||
(setq prompt (format prompt default)))
|
||
(let* ((completion-ignore-case t)
|
||
;; This binding is necessary because input-method-history is
|
||
;; buffer local.
|
||
(input-method (completing-read prompt input-method-alist
|
||
nil t nil 'input-method-history
|
||
default)))
|
||
(if (and input-method (symbolp input-method))
|
||
(setq input-method (symbol-name input-method)))
|
||
(if (> (length input-method) 0)
|
||
input-method
|
||
(if inhibit-null
|
||
(error "No valid input method is specified")))))
|
||
|
||
(defun activate-input-method (input-method)
|
||
"Switch to input method INPUT-METHOD for the current buffer.
|
||
If some other input method is already active, turn it off first.
|
||
If INPUT-METHOD is nil, deactivate any current input method."
|
||
(if (and input-method (symbolp input-method))
|
||
(setq input-method (symbol-name input-method)))
|
||
(if (and current-input-method
|
||
(not (string= current-input-method input-method)))
|
||
(inactivate-input-method))
|
||
(unless (or current-input-method (null input-method))
|
||
(let ((slot (assoc input-method input-method-alist)))
|
||
(if (null slot)
|
||
(error "Can't activate input method `%s'" input-method))
|
||
(let ((func (nth 2 slot)))
|
||
(if (functionp func)
|
||
(apply (nth 2 slot) input-method (nthcdr 5 slot))
|
||
(if (and (consp func) (symbolp (car func)) (symbolp (cdr func)))
|
||
(progn
|
||
(require (cdr func))
|
||
(apply (car func) input-method (nthcdr 5 slot)))
|
||
(error "Can't activate input method `%s'" input-method))))
|
||
(setq current-input-method input-method)
|
||
(setq current-input-method-title (nth 3 slot))
|
||
(unwind-protect
|
||
(run-hooks 'input-method-activate-hook)
|
||
(force-mode-line-update)))))
|
||
|
||
(defun inactivate-input-method ()
|
||
"Turn off the current input method."
|
||
(when current-input-method
|
||
(if input-method-history
|
||
(unless (string= current-input-method (car input-method-history))
|
||
(setq input-method-history
|
||
(cons current-input-method
|
||
(delete current-input-method input-method-history))))
|
||
(setq input-method-history (list current-input-method)))
|
||
(unwind-protect
|
||
(funcall inactivate-current-input-method-function)
|
||
(unwind-protect
|
||
(run-hooks 'input-method-inactivate-hook)
|
||
(setq current-input-method nil
|
||
current-input-method-title nil)
|
||
(force-mode-line-update)))))
|
||
|
||
(defun set-input-method (input-method)
|
||
"Select and activate input method INPUT-METHOD for the current buffer.
|
||
This also sets the default input method to the one you specify."
|
||
(interactive
|
||
(let* ((default (or (car input-method-history) default-input-method)))
|
||
(list (read-input-method-name
|
||
(if default "Select input method (default %s): " "Select input method: ")
|
||
default t))))
|
||
(activate-input-method input-method)
|
||
(setq default-input-method input-method))
|
||
|
||
(defun toggle-input-method (&optional arg)
|
||
"Turn on or off a multilingual text input method for the current buffer.
|
||
|
||
With no prefix argument, if an input method is currently activated,
|
||
turn it off. Otherwise, activate an input method -- the one most
|
||
recently used, or the one specified in `default-input-method', or
|
||
the one read from the minibuffer.
|
||
|
||
With a prefix argument, read an input method from the minibuffer and
|
||
turn it on.
|
||
|
||
The default is to use the most recent input method specified
|
||
\(not including the currently active input method, if any)."
|
||
(interactive "P")
|
||
(if (and current-input-method (not arg))
|
||
(inactivate-input-method)
|
||
(let ((default (or (car input-method-history) default-input-method)))
|
||
(if (and arg default (equal current-input-method default)
|
||
(> (length input-method-history) 1))
|
||
(setq default (nth 1 input-method-history)))
|
||
(activate-input-method
|
||
(if (or arg (not default))
|
||
(progn
|
||
(read-input-method-name
|
||
(if default "Input method (default %s): " "Input method: " )
|
||
default t))
|
||
default))
|
||
(or default-input-method
|
||
(setq default-input-method current-input-method)))))
|
||
|
||
(defun describe-input-method (input-method)
|
||
"Describe input method INPUT-METHOD."
|
||
(interactive
|
||
(list (read-input-method-name
|
||
"Describe input method (default, current choice): ")))
|
||
(if (and input-method (symbolp input-method))
|
||
(setq input-method (symbol-name input-method)))
|
||
(if (null input-method)
|
||
(describe-current-input-method)
|
||
(let ((current current-input-method))
|
||
(condition-case nil
|
||
(progn
|
||
(save-excursion
|
||
(activate-input-method input-method)
|
||
(describe-current-input-method))
|
||
(activate-input-method current))
|
||
(error
|
||
(activate-input-method current)
|
||
(with-output-to-temp-buffer "*Help*"
|
||
(let ((elt (assoc input-method input-method-alist)))
|
||
(princ (format
|
||
"Input method: %s (`%s' in mode line) for %s\n %s\n"
|
||
input-method (nth 3 elt) (nth 1 elt) (nth 4 elt))))))))))
|
||
|
||
(defun describe-current-input-method ()
|
||
"Describe the input method currently in use."
|
||
(if current-input-method
|
||
(if (and (symbolp describe-current-input-method-function)
|
||
(fboundp describe-current-input-method-function))
|
||
(funcall describe-current-input-method-function)
|
||
(message "No way to describe the current input method `%s'"
|
||
current-input-method)
|
||
(ding))
|
||
(error "No input method is activated now")))
|
||
|
||
(defun read-multilingual-string (prompt &optional initial-input input-method)
|
||
"Read a multilingual string from minibuffer, prompting with string PROMPT.
|
||
The input method selected last time is activated in minibuffer.
|
||
If optional second arg INITIAL-INPUT is non-nil, insert it in the minibuffer
|
||
initially.
|
||
Optional 3rd argument INPUT-METHOD specifies the input method
|
||
to be activated instead of the one selected last time. It is a symbol
|
||
or a string."
|
||
(setq input-method
|
||
(or input-method
|
||
current-input-method
|
||
default-input-method
|
||
(read-input-method-name "Input method: " nil t)))
|
||
(if (and input-method (symbolp input-method))
|
||
(setq input-method (symbol-name input-method)))
|
||
(let ((prev-input-method current-input-method))
|
||
(unwind-protect
|
||
(progn
|
||
(activate-input-method input-method)
|
||
(read-string prompt initial-input nil nil t))
|
||
(activate-input-method prev-input-method))))
|
||
|
||
;; Variables to control behavior of input methods. All input methods
|
||
;; should react to these variables.
|
||
|
||
(defcustom input-method-verbose-flag 'default
|
||
"*A flag to control extra guidance given by input methods.
|
||
The value should be nil, t, `complex-only', or `default'.
|
||
|
||
The extra guidance is done by showing list of available keys in echo
|
||
area. When you use the input method in the minibuffer, the guidance
|
||
is shown at the bottom short window (split from the existing window).
|
||
|
||
If the value is t, extra guidance is always given, if the value is
|
||
nil, extra guidance is always suppressed.
|
||
|
||
If the value is `complex-only', only complex input methods such as
|
||
`chinese-py' and `japanese' give extra guidance.
|
||
|
||
If the value is `default', complex input methods always give extra
|
||
guidance, but simple input methods give it only when you are not in
|
||
the minibuffer.
|
||
|
||
See also the variable `input-method-highlight-flag'."
|
||
:type '(choice (const t) (const nil) (const complex-only) (const default))
|
||
:group 'mule)
|
||
|
||
(defcustom input-method-highlight-flag t
|
||
"*If this flag is non-nil, input methods highlight partially-entered text.
|
||
For instance, while you are in the middle of a Quail input method sequence,
|
||
the text inserted so far is temporarily underlined.
|
||
The underlining goes away when you finish or abort the input method sequence.
|
||
See also the variable `input-method-verbose-flag'."
|
||
:type 'boolean
|
||
:group 'mule)
|
||
|
||
(defvar input-method-activate-hook nil
|
||
"Normal hook run just after an input method is activated.
|
||
|
||
The variable `current-input-method' keeps the input method name
|
||
just activated.")
|
||
|
||
(defvar input-method-inactivate-hook nil
|
||
"Normal hook run just after an input method is inactivated.
|
||
|
||
The variable `current-input-method' still keeps the input method name
|
||
just inactivated.")
|
||
|
||
(defvar input-method-after-insert-chunk-hook nil
|
||
"Normal hook run just after an input method insert some chunk of text.")
|
||
|
||
(defvar input-method-exit-on-first-char nil
|
||
"This flag controls a timing when an input method returns.
|
||
Usually, the input method does not return while there's a possibility
|
||
that it may find a different translation if a user types another key.
|
||
But, it this flag is non-nil, the input method returns as soon as
|
||
the current key sequence gets long enough to have some valid translation.")
|
||
|
||
(defvar input-method-use-echo-area nil
|
||
"This flag controls how an input method shows an intermediate key sequence.
|
||
Usually, the input method inserts the intermediate key sequence,
|
||
or candidate translations corresponding to the sequence,
|
||
at point in the current buffer.
|
||
But, if this flag is non-nil, it displays them in echo area instead.")
|
||
|
||
(defvar input-method-exit-on-invalid-key nil
|
||
"This flag controls the behaviour of an input method on invalid key input.
|
||
Usually, when a user types a key which doesn't start any character
|
||
handled by the input method, the key is handled by turning off the
|
||
input method temporarily. After that key, the input method is re-enabled.
|
||
But, if this flag is non-nil, the input method is never back on.")
|
||
|
||
|
||
(defvar set-language-environment-hook nil
|
||
"Normal hook run after some language environment is set.
|
||
|
||
When you set some hook function here, that effect usually should not
|
||
be inherited to another language environment. So, you had better set
|
||
another function in `exit-language-environment-hook' (which see) to
|
||
cancel the effect.")
|
||
|
||
(defvar exit-language-environment-hook nil
|
||
"Normal hook run after exiting from some language environment.
|
||
When this hook is run, the variable `current-language-environment'
|
||
is still bound to the language environment being exited.
|
||
|
||
This hook is mainly used for canceling the effect of
|
||
`set-language-environment-hook' (which-see).")
|
||
|
||
(put 'setup-specified-language-environment 'apropos-inhibit t)
|
||
|
||
(defun setup-specified-language-environment ()
|
||
"Switch to a specified language environment."
|
||
(interactive)
|
||
(let (language-name)
|
||
(if (and (symbolp last-command-event)
|
||
(or (not (eq last-command-event 'Default))
|
||
(setq last-command-event 'English))
|
||
(setq language-name (symbol-name last-command-event)))
|
||
(set-language-environment language-name)
|
||
(error "Bogus calling sequence"))))
|
||
|
||
(defcustom current-language-environment "English"
|
||
"The last language environment specified with `set-language-environment'.
|
||
This variable should be set only with \\[customize], which is equivalent
|
||
to using the function `set-language-environment'."
|
||
:link '(custom-manual "(emacs)Language Environments")
|
||
:set (lambda (symbol value) (set-language-environment value))
|
||
:get (lambda (x)
|
||
(or (car-safe (assoc-ignore-case
|
||
(if (symbolp current-language-environment)
|
||
(symbol-name current-language-environment)
|
||
current-language-environment)
|
||
language-info-alist))
|
||
"English"))
|
||
:type (cons 'choice (mapcar (lambda (lang)
|
||
(list 'const (car lang)))
|
||
language-info-alist))
|
||
:initialize 'custom-initialize-default
|
||
:group 'mule
|
||
:type 'string)
|
||
|
||
(defun reset-language-environment ()
|
||
"Reset multilingual environment of Emacs to the default status.
|
||
|
||
The default status is as follows:
|
||
|
||
The default value of buffer-file-coding-system is nil.
|
||
The default coding system for process I/O is nil.
|
||
The default value for the command `set-terminal-coding-system' is nil.
|
||
The default value for the command `set-keyboard-coding-system' is nil.
|
||
|
||
The order of priorities of coding categories and the coding system
|
||
bound to each category are as follows
|
||
coding category coding system
|
||
--------------------------------------------------
|
||
coding-category-iso-8-2 iso-latin-1
|
||
coding-category-iso-8-1 iso-latin-1
|
||
coding-category-iso-7-tight iso-2022-jp
|
||
coding-category-iso-7 iso-2022-7bit
|
||
coding-category-iso-7-else iso-2022-7bit-lock
|
||
coding-category-iso-8-else iso-2022-8bit-ss2
|
||
coding-category-emacs-mule emacs-mule
|
||
coding-category-raw-text raw-text
|
||
coding-category-sjis japanese-shift-jis
|
||
coding-category-big5 chinese-big5
|
||
coding-category-ccl nil
|
||
coding-category-binary no-conversion
|
||
"
|
||
(interactive)
|
||
;; This function formerly set default-enable-multibyte-characters to t,
|
||
;; but that is incorrect. It should not alter the unibyte/multibyte choice.
|
||
|
||
(setq coding-category-iso-7-tight 'iso-2022-jp
|
||
coding-category-iso-7 'iso-2022-7bit
|
||
coding-category-iso-8-1 'iso-latin-1
|
||
coding-category-iso-8-2 'iso-latin-1
|
||
coding-category-iso-7-else 'iso-2022-7bit-lock
|
||
coding-category-iso-8-else 'iso-2022-8bit-ss2
|
||
coding-category-emacs-mule 'emacs-mule
|
||
coding-category-raw-text 'raw-text
|
||
coding-category-sjis 'japanese-shift-jis
|
||
coding-category-big5 'chinese-big5
|
||
coding-category-utf-8 nil
|
||
coding-category-utf-16-be nil
|
||
coding-category-utf-16-le nil
|
||
coding-category-ccl nil
|
||
coding-category-binary 'no-conversion)
|
||
|
||
(set-coding-priority
|
||
'(coding-category-iso-8-1
|
||
coding-category-iso-8-2
|
||
coding-category-iso-7-tight
|
||
coding-category-iso-7
|
||
coding-category-iso-7-else
|
||
coding-category-iso-8-else
|
||
coding-category-emacs-mule
|
||
coding-category-raw-text
|
||
coding-category-sjis
|
||
coding-category-big5
|
||
coding-category-ccl
|
||
coding-category-binary
|
||
coding-category-utf-16-be
|
||
coding-category-utf-16-le
|
||
coding-category-utf-8))
|
||
|
||
(update-coding-systems-internal)
|
||
|
||
(set-default-coding-systems nil)
|
||
(setq default-sendmail-coding-system 'iso-latin-1)
|
||
(setq default-process-coding-system '(undecided . iso-latin-1))
|
||
|
||
;; Don't alter the terminal and keyboard coding systems here.
|
||
;; The terminal still supports the same coding system
|
||
;; that it supported a minute ago.
|
||
;;; (set-terminal-coding-system-internal nil)
|
||
;;; (set-keyboard-coding-system-internal nil)
|
||
|
||
(setq nonascii-translation-table nil
|
||
nonascii-insert-offset 0))
|
||
|
||
(reset-language-environment)
|
||
|
||
(defun set-display-table-and-terminal-coding-system (language-name)
|
||
"Set up the display table and terminal coding system for LANGUAGE-NAME."
|
||
(let ((coding (get-language-info language-name 'unibyte-display)))
|
||
(if coding
|
||
(standard-display-european-internal)
|
||
(standard-display-default (if (eq window-system 'pc) 128 160) 255)
|
||
(aset standard-display-table 146 nil))
|
||
(or (eq window-system 'pc)
|
||
(set-terminal-coding-system coding))))
|
||
|
||
(defun set-language-environment (language-name)
|
||
"Set up multi-lingual environment for using LANGUAGE-NAME.
|
||
This sets the coding system priority and the default input method
|
||
and sometimes other things. LANGUAGE-NAME should be a string
|
||
which is the name of a language environment. For example, \"Latin-1\"
|
||
specifies the character set for the major languages of Western Europe."
|
||
(interactive (list (read-language-name
|
||
nil
|
||
"Set language environment (default, English): ")))
|
||
(if language-name
|
||
(if (symbolp language-name)
|
||
(setq language-name (symbol-name language-name)))
|
||
(setq language-name "English"))
|
||
(or (assoc-ignore-case language-name language-info-alist)
|
||
(error "Language environment not defined: %S" language-name))
|
||
(if current-language-environment
|
||
(let ((func (get-language-info current-language-environment
|
||
'exit-function)))
|
||
(run-hooks 'exit-language-environment-hook)
|
||
(if (fboundp func) (funcall func))))
|
||
(let ((default-eol-type (coding-system-eol-type
|
||
default-buffer-file-coding-system)))
|
||
(reset-language-environment)
|
||
|
||
(setq current-language-environment language-name)
|
||
(set-language-environment-coding-systems language-name default-eol-type))
|
||
(let ((input-method (get-language-info language-name 'input-method)))
|
||
(when input-method
|
||
(setq default-input-method input-method)
|
||
(if input-method-history
|
||
(setq input-method-history
|
||
(cons input-method
|
||
(delete input-method input-method-history))))))
|
||
(let ((nonascii (get-language-info language-name 'nonascii-translation))
|
||
(dos-table
|
||
(if (eq window-system 'pc)
|
||
(intern
|
||
(format "cp%d-nonascii-translation-table" dos-codepage)))))
|
||
(cond
|
||
((char-table-p nonascii)
|
||
(setq nonascii-translation-table nonascii))
|
||
((and (eq window-system 'pc) (boundp dos-table))
|
||
;; DOS terminals' default is to use a special non-ASCII translation
|
||
;; table as appropriate for the installed codepage.
|
||
(setq nonascii-translation-table (symbol-value dos-table)))
|
||
((charsetp nonascii)
|
||
(setq nonascii-insert-offset (- (make-char nonascii) 128)))))
|
||
|
||
;; Unibyte setups if necessary.
|
||
(unless default-enable-multibyte-characters
|
||
;; Syntax and case table.
|
||
(let ((syntax (get-language-info language-name 'unibyte-syntax)))
|
||
(if syntax
|
||
(let ((set-case-syntax-set-multibyte nil))
|
||
(load syntax nil t))
|
||
;; No information for syntax and case. Reset to the defaults.
|
||
(let ((syntax-table (standard-syntax-table))
|
||
(case-table (standard-case-table))
|
||
(ch (if (eq window-system 'pc) 128 160)))
|
||
(while (< ch 256)
|
||
(modify-syntax-entry ch " " syntax-table)
|
||
(aset case-table ch ch)
|
||
(setq ch (1+ ch)))
|
||
(set-char-table-extra-slot case-table 0 nil)
|
||
(set-char-table-extra-slot case-table 1 nil)
|
||
(set-char-table-extra-slot case-table 2 nil))
|
||
(set-standard-case-table (standard-case-table))
|
||
(let ((list (buffer-list)))
|
||
(while list
|
||
(with-current-buffer (car list)
|
||
(set-case-table (standard-case-table)))
|
||
(setq list (cdr list))))))
|
||
(set-display-table-and-terminal-coding-system language-name))
|
||
|
||
(let ((required-features (get-language-info language-name 'features)))
|
||
(while required-features
|
||
(require (car required-features))
|
||
(setq required-features (cdr required-features))))
|
||
(let ((func (get-language-info language-name 'setup-function)))
|
||
(if (fboundp func)
|
||
(funcall func)))
|
||
(run-hooks 'set-language-environment-hook)
|
||
(force-mode-line-update t))
|
||
|
||
(defun standard-display-european-internal ()
|
||
;; Actually set up direct output of non-ASCII characters.
|
||
(standard-display-8bit (if (eq window-system 'pc) 128 160) 255)
|
||
;; Unibyte Emacs on MS-DOS wants to display all 8-bit characters with
|
||
;; the native font, and codes 160 and 146 stand for something very
|
||
;; different there.
|
||
(or (and (eq window-system 'pc) (not default-enable-multibyte-characters))
|
||
(progn
|
||
;; Make non-line-break space display as a plain space.
|
||
;; Most X fonts do the wrong thing for code 160.
|
||
(aset standard-display-table 160 [32])
|
||
;; Most Windows programs send out apostrophe's as \222. Most X fonts
|
||
;; don't contain a character at that position. Map it to the ASCII
|
||
;; apostrophe.
|
||
(aset standard-display-table 146 [39]))))
|
||
|
||
(defun set-language-environment-coding-systems (language-name
|
||
&optional eol-type)
|
||
"Do various coding system setups for language environment LANGUAGE-NAME.
|
||
|
||
The optional arg EOL-TYPE specifies the eol-type of the default value
|
||
of buffer-file-coding-system set by this function."
|
||
(let* ((priority (get-language-info language-name 'coding-priority))
|
||
(default-coding (car priority)))
|
||
(if priority
|
||
(let ((categories (mapcar 'coding-system-category priority)))
|
||
(set-default-coding-systems
|
||
(if (memq eol-type '(0 1 2 unix dos mac))
|
||
(coding-system-change-eol-conversion default-coding eol-type)
|
||
default-coding))
|
||
(setq default-sendmail-coding-system default-coding)
|
||
(set-coding-priority categories)
|
||
(while priority
|
||
(set (car categories) (car priority))
|
||
(setq priority (cdr priority) categories (cdr categories)))
|
||
(update-coding-systems-internal)))))
|
||
|
||
;; Print all arguments with `princ', then print "\n".
|
||
(defsubst princ-list (&rest args)
|
||
(while args (princ (car args)) (setq args (cdr args)))
|
||
(princ "\n"))
|
||
|
||
(put 'describe-specified-language-support 'apropos-inhibit t)
|
||
|
||
;; Print a language specific information such as input methods,
|
||
;; charsets, and coding systems. This function is intended to be
|
||
;; called from the menu:
|
||
;; [menu-bar mule describe-language-environment LANGUAGE]
|
||
;; and should not run it by `M-x describe-current-input-method-function'.
|
||
(defun describe-specified-language-support ()
|
||
"Describe how Emacs supports the specified language environment."
|
||
(interactive)
|
||
(let (language-name)
|
||
(if (not (and (symbolp last-command-event)
|
||
(or (not (eq last-command-event 'Default))
|
||
(setq last-command-event 'English))
|
||
(setq language-name (symbol-name last-command-event))))
|
||
(error "Bogus calling sequence"))
|
||
(describe-language-environment language-name)))
|
||
|
||
(defun describe-language-environment (language-name)
|
||
"Describe how Emacs supports language environment LANGUAGE-NAME."
|
||
(interactive
|
||
(list (read-language-name
|
||
'documentation
|
||
"Describe language environment (default, current choice): ")))
|
||
(if (null language-name)
|
||
(setq language-name current-language-environment))
|
||
(if (or (null language-name)
|
||
(null (get-language-info language-name 'documentation)))
|
||
(error "No documentation for the specified language"))
|
||
(if (symbolp language-name)
|
||
(setq language-name (symbol-name language-name)))
|
||
(let ((doc (get-language-info language-name 'documentation))
|
||
pos)
|
||
(with-output-to-temp-buffer "*Help*"
|
||
(save-excursion
|
||
(set-buffer standard-output)
|
||
(insert language-name " language environment\n\n")
|
||
(if (stringp doc)
|
||
(insert doc "\n\n"))
|
||
(condition-case nil
|
||
(let ((str (eval (get-language-info language-name 'sample-text))))
|
||
(if (stringp str)
|
||
(insert "Sample text:\n " str "\n\n")))
|
||
(error nil))
|
||
(let ((input-method (get-language-info language-name 'input-method))
|
||
(l (copy-sequence input-method-alist)))
|
||
(insert "Input methods")
|
||
(when input-method
|
||
(insert " (default, " input-method ")")
|
||
(setq input-method (assoc input-method input-method-alist))
|
||
(setq l (cons input-method (delete input-method l))))
|
||
(insert ":\n")
|
||
(while l
|
||
(when (string= language-name (nth 1 (car l)))
|
||
(insert " " (car (car l)))
|
||
(search-backward (car (car l)))
|
||
(help-xref-button 0 #'describe-input-method (car (car l))
|
||
"mouse-2, RET: describe this input method")
|
||
(goto-char (point-max))
|
||
(insert " (\"" (nth 3 (car l)) "\" in mode line)\n"))
|
||
(setq l (cdr l)))
|
||
(insert "\n"))
|
||
(insert "Character sets:\n")
|
||
(let ((l (get-language-info language-name 'charset)))
|
||
(if (null l)
|
||
(insert " nothing specific to " language-name "\n")
|
||
(while l
|
||
(insert " " (symbol-name (car l)))
|
||
(search-backward (symbol-name (car l)))
|
||
(help-xref-button 0 #'describe-character-set (car l)
|
||
"mouse-2, RET: describe this character set")
|
||
(goto-char (point-max))
|
||
(insert ": " (charset-description (car l)) "\n")
|
||
(setq l (cdr l)))))
|
||
(insert "\n")
|
||
(insert "Coding systems:\n")
|
||
(let ((l (get-language-info language-name 'coding-system)))
|
||
(if (null l)
|
||
(insert " nothing specific to " language-name "\n")
|
||
(while l
|
||
(insert " " (symbol-name (car l)))
|
||
(search-backward (symbol-name (car l)))
|
||
(help-xref-button 0 #'describe-coding-system (car l)
|
||
"mouse-2, RET: describe this coding system")
|
||
(goto-char (point-max))
|
||
(insert " (`"
|
||
(coding-system-mnemonic (car l))
|
||
"' in mode line):\n\t"
|
||
(coding-system-doc-string (car l))
|
||
"\n")
|
||
(let ((aliases (coding-system-get (car l)
|
||
'alias-coding-systems)))
|
||
(when aliases
|
||
(insert "\t(alias:")
|
||
(while aliases
|
||
(insert " " (symbol-name (car aliases)))
|
||
(setq aliases (cdr aliases)))
|
||
(insert ")\n")))
|
||
(setq l (cdr l)))))
|
||
(help-setup-xref (list #'describe-language-environment language-name)
|
||
(interactive-p))))))
|
||
|
||
;;; Locales.
|
||
|
||
(defvar locale-translation-file-name nil
|
||
"File name for the system's file of locale-name aliases, or nil if none.")
|
||
|
||
(defvar locale-language-names
|
||
'(
|
||
;; UTF-8 is not yet implemented.
|
||
;; Put this first, so that e.g. "ko.UTF-8" does not match "ko" below.
|
||
(".*[._]utf" . nil)
|
||
|
||
;; Locale names of the form LANGUAGE[_TERRITORY][.CODESET][@MODIFIER]
|
||
;; as specified in the Single Unix Spec, Version 2.
|
||
;; LANGUAGE is a language code taken from ISO 639:1988 (E/F)
|
||
;; with additions from ISO 639/RA Newsletter No.1/1989;
|
||
;; see Internet RFC 2165 (1997-06).
|
||
;; TERRITORY is a country code taken from ISO 3166.
|
||
;; CODESET and MODIFIER are implementation-dependent.
|
||
;;
|
||
; aa Afar
|
||
; ab Abkhazian
|
||
("af" . "Latin-1") ; Afrikaans
|
||
("am" . "Ethiopic") ; Amharic
|
||
; ar Arabic
|
||
; as Assamese
|
||
; ay Aymara
|
||
; az Azerbaijani
|
||
; ba Bashkir
|
||
("be" . "Latin-5") ; Byelorussian
|
||
("bg" . "Latin-5") ; Bulgarian
|
||
; bh Bihari
|
||
; bi Bislama
|
||
; bn Bengali, Bangla
|
||
("bo" . "Tibetan")
|
||
("br" . "Latin-1") ; Breton
|
||
("ca" . "Latin-1") ; Catalan
|
||
; co Corsican
|
||
("cs" . "Czech")
|
||
("cy" . "Latin-8") ; Welsh
|
||
("da" . "Latin-1") ; Danish
|
||
("de" . "German")
|
||
; dz Bhutani
|
||
("el" . "Greek")
|
||
;; Users who specify "en" explicitly typically want Latin-1, not ASCII.
|
||
("en" . "Latin-1") ; English
|
||
("eo" . "Latin-3") ; Esperanto
|
||
("es" . "Latin-1") ; Spanish
|
||
("et" . "Latin-4") ; Estonian
|
||
("eu" . "Latin-1") ; Basque
|
||
; fa Persian
|
||
("fi" . "Latin-1") ; Finnish
|
||
; fj Fiji
|
||
("fo" . "Latin-1") ; Faroese
|
||
("fr" . "Latin-1") ; French
|
||
("fy" . "Latin-1") ; Frisian
|
||
("ga" . "Latin-1") ; Irish Gaelic (new orthography)
|
||
("gd" . "Latin-1") ; Scots Gaelic
|
||
("gl" . "Latin-1") ; Galician
|
||
; gn Guarani
|
||
; gu Gujarati
|
||
; ha Hausa
|
||
("he" . "Hebrew")
|
||
("hi" . "Devanagari") ; Hindi
|
||
("hr" . "Latin-2") ; Croatian
|
||
("hu" . "Latin-2") ; Hungarian
|
||
; hy Armenian
|
||
; ia Interlingua
|
||
("id" . "Latin-1") ; Indonesian
|
||
; ie Interlingue
|
||
; ik Inupiak
|
||
("is" . "Latin-1") ; Icelandic
|
||
("it" . "Latin-1") ; Italian
|
||
; iu Inuktitut
|
||
("ja" . "Japanese")
|
||
; jw Javanese
|
||
; ka Georgian
|
||
; kk Kazakh
|
||
("kl" . "Latin-1") ; Greenlandic
|
||
; km Cambodian
|
||
; kn Kannada
|
||
("ko" . "Korean")
|
||
; ks Kashmiri
|
||
; ku Kurdish
|
||
; ky Kirghiz
|
||
("la" . "Latin-1") ; Latin
|
||
; ln Lingala
|
||
("lo" . "Lao") ; Laothian
|
||
("lt" . "Latin-4") ; Lithuanian
|
||
("lv" . "Latin-4") ; Latvian, Lettish
|
||
; mg Malagasy
|
||
; mi Maori
|
||
("mk" . "Latin-5") ; Macedonian
|
||
; ml Malayalam
|
||
; mn Mongolian
|
||
; mo Moldavian
|
||
("mr" . "Devanagari") ; Marathi
|
||
; ms Malay
|
||
("mt" . "Latin-3") ; Maltese
|
||
; my Burmese
|
||
; na Nauru
|
||
("ne" . "Devanagari") ; Nepali
|
||
("nl" . "Latin-1") ; Dutch
|
||
("no" . "Latin-1") ; Norwegian
|
||
; oc Occitan
|
||
; om (Afan) Oromo
|
||
; or Oriya
|
||
; pa Punjabi
|
||
("pl" . "Latin-2") ; Polish
|
||
; ps Pashto, Pushto
|
||
("pt" . "Latin-1") ; Portuguese
|
||
; qu Quechua
|
||
("rm" . "Latin-1") ; Rhaeto-Romanic
|
||
; rn Kirundi
|
||
("ro" . "Romanian")
|
||
("ru.*[_.]koi8" . "Cyrillic-KOI8") ; Russian
|
||
("ru" . "Latin-5") ; Russian
|
||
; rw Kinyarwanda
|
||
("sa" . "Devanagari") ; Sanskrit
|
||
; sd Sindhi
|
||
; sg Sangho
|
||
("sh" . "Latin-2") ; Serbo-Croatian
|
||
; si Sinhalese
|
||
("sk" . "Slovak")
|
||
("sl" . "Slovenian")
|
||
; sm Samoan
|
||
; sn Shona
|
||
; so Somali
|
||
("sq" . "Latin-1") ; Albanian
|
||
("sr" . "Latin-2") ; Serbian (Latin alphabet)
|
||
; ss Siswati
|
||
; st Sesotho
|
||
; su Sundanese
|
||
("sv" . "Latin-1") ; Swedish
|
||
("sw" . "Latin-1") ; Swahili
|
||
; ta Tamil
|
||
; te Telugu
|
||
; tg Tajik
|
||
("th" . "Thai")
|
||
; ti Tigrinya
|
||
; tk Turkmen
|
||
("tl" . "Latin-1") ; Tagalog
|
||
; tn Setswana
|
||
; to Tonga
|
||
("tr" . "Latin-5") ; Turkish
|
||
; ts Tsonga
|
||
; tt Tatar
|
||
; tw Twi
|
||
; ug Uighur
|
||
("uk" . "Latin-5") ; Ukrainian
|
||
; ur Urdu
|
||
; uz Uzbek
|
||
("vi" . "Vietnamese")
|
||
; vo Volapuk
|
||
; wo Wolof
|
||
; xh Xhosa
|
||
; yi Yiddish
|
||
; yo Yoruba
|
||
; za Zhuang
|
||
("zh.*[._]big5" . "Chinese-BIG5")
|
||
("zh.*[._]gbk" . nil) ; Solaris 2.7; has gbk-0 as well as GB 2312.1980-0
|
||
("zh_tw" . "Chinese-CNS")
|
||
("zh" . "Chinese-GB")
|
||
; zu Zulu
|
||
|
||
;; ISO standard locales
|
||
("c$" . "ASCII")
|
||
("posix$" . "ASCII")
|
||
|
||
;; The "IPA" Emacs language environment does not correspond
|
||
;; to any ISO 639 code, so let it stand for itself.
|
||
("ipa$" . "IPA")
|
||
|
||
;; Nonstandard or obsolete language codes
|
||
("cz" . "Czech") ; e.g. Solaris 2.6
|
||
("ee" . "Latin-4") ; Estonian, e.g. X11R6.4
|
||
("iw" . "Hebrew") ; e.g. X11R6.4
|
||
("sp" . "Latin-5") ; Serbian (Cyrillic alphabet), e.g. X11R6.4
|
||
("su" . "Latin-1") ; Finnish, e.g. Solaris 2.6
|
||
("jp" . "Japanese") ; e.g. MS Windows
|
||
)
|
||
"List of pairs of locale regexps and language names.
|
||
The first element whose locale regexp matches the start of a downcased locale
|
||
specifies the language name corresponding to that locale.
|
||
If the language name is nil, there is no corresponding language environment.")
|
||
|
||
(defvar locale-charset-language-names
|
||
'((".*8859[-_]?1\\>" . "Latin-1")
|
||
(".*8859[-_]?2\\>" . "Latin-2")
|
||
(".*8859[-_]?3\\>" . "Latin-3")
|
||
(".*8859[-_]?4\\>" . "Latin-4")
|
||
(".*8859[-_]?9\\>" . "Latin-5")
|
||
(".*8859[-_]?14\\>" . "Latin-8")
|
||
(".*8859[-_]?15\\>" . "Latin-9")
|
||
(".*@euro\\>" . "Latin-9")
|
||
)
|
||
"List of pairs of locale regexps and charset language names.
|
||
The first element whose locale regexp matches the start of a downcased locale
|
||
specifies the language name whose charsets corresponds to that locale.
|
||
This language name is used if its charsets disagree with the charsets of
|
||
the language name that would otherwise be used for this locale.")
|
||
|
||
(defvar locale-preferred-coding-systems
|
||
'(("ja.*[._]euc" . japanese-iso-8bit)
|
||
("ja.*[._]jis7" . iso-2022-jp)
|
||
("ja.*[._]pck" . japanese-shift-jis)
|
||
("ja.*[._]sjis" . japanese-shift-jis)
|
||
)
|
||
"List of pairs of locale regexps and preferred coding systems.
|
||
The first element whose locale regexp matches the start of a downcased locale
|
||
specifies the coding system to prefer when using that locale.")
|
||
|
||
(defun locale-name-match (key alist)
|
||
"Search for KEY in ALIST, which should be a list of regexp-value pairs.
|
||
Return the value corresponding to the first regexp that matches the
|
||
start of KEY, or nil if there is no match."
|
||
(let (element)
|
||
(while (and alist (not element))
|
||
(if (string-match (concat "^\\(" (car (car alist)) "\\)") key)
|
||
(setq element (car alist)))
|
||
(setq alist (cdr alist)))
|
||
(cdr element)))
|
||
|
||
(defun set-locale-environment (locale-name)
|
||
"Set up multi-lingual environment for using LOCALE-NAME.
|
||
This sets the coding system priority and the default input method
|
||
and sometimes other things. LOCALE-NAME should be a string
|
||
which is the name of a locale supported by the system;
|
||
often it is of the form xx_XX.CODE, where xx is a language,
|
||
XX is a country, and CODE specifies a character set and coding system.
|
||
For example, the locale name \"ja_JP.EUC\" might name a locale
|
||
for Japanese in Japan using the `japanese-iso-8bit' coding-system.
|
||
|
||
If LOCALE-NAME is nil, its value is taken from the environment.
|
||
|
||
The locale names supported by your system can typically be found in a
|
||
directory named `/usr/share/locale' or `/usr/lib/locale'. LOCALE-NAME
|
||
may be translated according to the table specified by
|
||
`locale-translation-file-name'.
|
||
|
||
See also `locale-charset-language-names', `locale-language-names',
|
||
`locale-preferred-coding-systems' and `locale-coding-system'."
|
||
|
||
;; Do this at runtime for the sake of binaries possibly transported
|
||
;; to a system without X.
|
||
(setq locale-translation-file-name
|
||
(let ((files
|
||
'("/usr/lib/X11/locale/locale.alias" ; e.g. X11R6.4
|
||
"/usr/X11R6/lib/X11/locale/locale.alias" ; e.g. RedHat 4.2
|
||
"/usr/openwin/lib/locale/locale.alias" ; e.g. Solaris 2.6
|
||
;;
|
||
;; The following name appears after the X-related names above,
|
||
;; since the X-related names are what X actually uses.
|
||
"/usr/share/locale/locale.alias" ; GNU/Linux sans X
|
||
)))
|
||
(while (and files (not (file-exists-p (car files))))
|
||
(setq files (cdr files)))
|
||
(car files)))
|
||
|
||
(unless locale-name
|
||
;; Use the first of these three environment variables
|
||
;; that has a nonempty value.
|
||
(let ((vars '("LC_ALL" "LC_CTYPE" "LANG")))
|
||
(while (and vars (not (setq locale-name (getenv (car vars)))))
|
||
(setq vars (cdr vars)))))
|
||
|
||
(when locale-name
|
||
|
||
;; Translate "swedish" into "sv_SE.ISO8859-1", and so on,
|
||
;; using the translation file that many systems have.
|
||
(when locale-translation-file-name
|
||
(with-temp-buffer
|
||
(insert-file-contents locale-translation-file-name)
|
||
(when (re-search-forward
|
||
(concat "^" (regexp-quote locale-name) ":?[ \t]+") nil t)
|
||
(setq locale-name (buffer-substring (point) (line-end-position))))))
|
||
|
||
(setq locale-name (downcase locale-name))
|
||
|
||
(let ((language-name
|
||
(locale-name-match locale-name locale-language-names))
|
||
(charset-language-name
|
||
(locale-name-match locale-name locale-charset-language-names))
|
||
(coding-system
|
||
(locale-name-match locale-name locale-preferred-coding-systems)))
|
||
|
||
(if (and charset-language-name
|
||
(not
|
||
(equal (get-language-info language-name 'charset)
|
||
(get-language-info charset-language-name 'charset))))
|
||
(setq language-name charset-language-name))
|
||
|
||
(when language-name
|
||
|
||
;; Set up for this character set. This is now the right way
|
||
;; to do it for both unibyte and multibyte modes.
|
||
(set-language-environment language-name)
|
||
|
||
;; If default-enable-multibyte-characters is nil,
|
||
;; we are using single-byte characters,
|
||
;; so the display table and terminal coding system are irrelevant.
|
||
(when default-enable-multibyte-characters
|
||
(set-display-table-and-terminal-coding-system language-name))
|
||
|
||
(setq locale-coding-system
|
||
(car (get-language-info language-name 'coding-priority))))
|
||
|
||
(when coding-system
|
||
(prefer-coding-system coding-system)
|
||
(setq locale-coding-system coding-system)))))
|
||
|
||
;;; Charset property
|
||
|
||
(defun get-charset-property (charset propname)
|
||
"Return the value of CHARSET's PROPNAME property.
|
||
This is the last value stored with
|
||
(put-charset-property CHARSET PROPNAME VALUE)."
|
||
(and (not (eq charset 'composition))
|
||
(plist-get (charset-plist charset) propname)))
|
||
|
||
(defun put-charset-property (charset propname value)
|
||
"Store CHARSETS's PROPNAME property with value VALUE.
|
||
It can be retrieved with `(get-charset-property CHARSET PROPNAME)'."
|
||
(or (eq charset 'composition)
|
||
(set-charset-plist charset
|
||
(plist-put (charset-plist charset) propname value))))
|
||
|
||
;;; Character code property
|
||
(put 'char-code-property-table 'char-table-extra-slots 0)
|
||
|
||
(defvar char-code-property-table
|
||
(make-char-table 'char-code-property-table)
|
||
"Char-table containing a property list of each character code.
|
||
|
||
See also the documentation of `get-char-code-property' and
|
||
`put-char-code-property'.")
|
||
|
||
(defun get-char-code-property (char propname)
|
||
"Return the value of CHAR's PROPNAME property in `char-code-property-table'."
|
||
(let ((plist (aref char-code-property-table char)))
|
||
(if (listp plist)
|
||
(car (cdr (memq propname plist))))))
|
||
|
||
(defun put-char-code-property (char propname value)
|
||
"Store CHAR's PROPNAME property with VALUE in `char-code-property-table'.
|
||
It can be retrieved with `(get-char-code-property CHAR PROPNAME)'."
|
||
(let ((plist (aref char-code-property-table char)))
|
||
(if plist
|
||
(let ((slot (memq propname plist)))
|
||
(if slot
|
||
(setcar (cdr slot) value)
|
||
(nconc plist (list propname value))))
|
||
(aset char-code-property-table char (list propname value)))))
|
||
|
||
|
||
;; Pretty description of encoded string
|
||
|
||
;; Alist of ISO 2022 control code vs the corresponding mnemonic string.
|
||
(defvar iso-2022-control-alist
|
||
'((?\x1b . "ESC")
|
||
(?\x0e . "SO")
|
||
(?\x0f . "SI")
|
||
(?\x8e . "SS2")
|
||
(?\x8f . "SS3")
|
||
(?\x9b . "CSI")))
|
||
|
||
(defun encoded-string-description (str coding-system)
|
||
"Return a pretty description of STR that is encoded by CODING-SYSTEM."
|
||
(setq str (string-as-unibyte str))
|
||
(mapconcat
|
||
(if (and coding-system (eq (coding-system-type coding-system) 2))
|
||
;; Try to get a pretty description for ISO 2022 escape sequences.
|
||
(function (lambda (x) (or (cdr (assq x iso-2022-control-alist))
|
||
(format "%02X" x))))
|
||
(function (lambda (x) (format "0x%02X" x))))
|
||
str " "))
|
||
|
||
(defun encode-coding-char (char coding-system)
|
||
"Encode CHAR by CODING-SYSTEM and return the resulting string.
|
||
If CODING-SYSTEM can't safely encode CHAR, return nil."
|
||
(let ((str1 (string-as-multibyte (char-to-string char)))
|
||
(str2 (string-as-multibyte (make-string 2 char)))
|
||
(safe-chars (and coding-system
|
||
(coding-system-get coding-system 'safe-chars)))
|
||
(charset (char-charset char))
|
||
enc1 enc2 i1 i2)
|
||
(when (or (eq safe-chars t)
|
||
(eq charset 'ascii)
|
||
(and safe-chars (aref safe-chars char)))
|
||
;; We must find the encoded string of CHAR. But, just encoding
|
||
;; CHAR will put extra control sequences (usually to designate
|
||
;; ASCII charaset) at the tail if type of CODING is ISO 2022.
|
||
;; To exclude such tailing bytes, we at first encode one-char
|
||
;; string and two-char string, then check how many bytes at the
|
||
;; tail of both encoded strings are the same.
|
||
|
||
(setq enc1 (encode-coding-string str1 coding-system)
|
||
i1 (length enc1)
|
||
enc2 (encode-coding-string str2 coding-system)
|
||
i2 (length enc2))
|
||
(while (and (> i1 0) (= (aref enc1 (1- i1)) (aref enc2 (1- i2))))
|
||
(setq i1 (1- i1) i2 (1- i2)))
|
||
|
||
;; Now (substring enc1 i1) and (substring enc2 i2) are the same,
|
||
;; and they are the extra control sequences at the tail to
|
||
;; exclude.
|
||
(substring enc2 0 i2))))
|
||
|
||
|
||
;;; mule-cmds.el ends here
|