Commit d0b9c3ab authored by Kenichi Handa's avatar Kenichi Handa
Browse files

Define describe-coding-system instead of

describe-current-coding-system in help-map and mule-menu-keymap.
In mule-menu-keymap, enable set-buffer-process-coding-system only
when the current buffer has been associated with some subprocess.
(set-language-info): Doc-string modified because input-method is
not a valid KEY argument now.
(leim-list-file-name, leim-list-header, leim-list-entry-regexp):
New variables.
(update-leim-list-file, update-all-leim-list-files): New
(current-input-method): Doc-string modified because the value is
now input method name.
(defualt-input-method, previous-input-method): Likewise.
(current-input-method-title): Doc-string modified because now each
input method does not have to set this variable.
(input-method-alist): New variable.
(register-input-method): Register input method in
(read-language-and-input-method-name): Deleted.
(read-input-method-name): New function.
(activate-input-method, select-input-method, toggle-input-method):
Modified for the above change.
(read-multilingual-string): Likewise.
(describe-current-input-method): Renamed from
(describe-input-method): New function.
(describe-language-environment): Do not put a vacant line at the
top of *Help* buffer.  Show a title string of each input method.
parent 426f97dc
......@@ -43,7 +43,7 @@
(define-key help-map "\C-L" 'describe-language-environment)
(define-key help-map "\C-\\" 'describe-input-method)
(define-key help-map "C" 'describe-current-coding-system)
(define-key help-map "C" 'describe-coding-system)
(define-key help-map "h" 'view-hello-file)
(defvar mule-menu-keymap nil
......@@ -87,8 +87,8 @@
(define-key-after mule-menu-keymap [separator-input-method]
(define-key-after mule-menu-keymap [describe-current-coding-system]
'("Describe coding systems" . describe-current-coding-system)
(define-key-after mule-menu-keymap [describe-coding-system]
'("Describe coding systems" . describe-coding-system)
(define-key-after mule-menu-keymap [set-various-coding-system]
'("Set coding systems" . set-coding-system-map)
......@@ -124,6 +124,9 @@
'(null window-system))
(put 'set-keyboard-coding-system 'menu-enable
'(null window-system))
;; This is meaningless when the current buffer has no process.
(put 'set-buffer-process-coding-system 'menu-enable
'(get-buffer-process (current-buffer)))
;; This should be a single character key binding because users use it
;; very frequently while editing multilingual text. Now we can use
......@@ -202,10 +205,6 @@ tutorial: a tutorial file name written in the language.
sample-text: one line short text containing characters of the language.
input-method: alist of input method names for the language vs information
for activating them. Use `register-input-method' (which see)
to add a new input method to the alist.
documentation: t or a string describing how Emacs supports the language.
If a string is specified, it is shown before any other information
of the language by the command `describe-language-environment'.
......@@ -277,34 +276,78 @@ ALIST is an alist of KEY and INFO. See the documentation of
;;; Multilingual input methods.
(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 registeres
;; the whole input methods in Emacs.
;; Each entry is has the form:
;; (register-input-method
;; 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.
"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
"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 (dir)
"Update LEIM list file in directory DIR."
(let ((functions update-leim-list-functions))
(while functions
(funcall (car functions) (expand-file-name dir))
(setq functions (cdr functions)))))
(defun update-all-leim-list-files ()
"Update all the LEIM list files."
(let ((l load-path))
(while l
(if (string-match "leim" (car l))
(update-leim-list-file (car l)))
(setq l (cdr l)))))
(defvar current-input-method nil
"The current input method for multilingual text.
The value is a cons of language name and input method name.
If nil, it 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.
Every input method should set this to an appropriate value when activated.")
"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)
(defvar default-input-method nil
"Default input method.
"Default input method for multilingual text.
The default input method is the one activated automatically by the command
`toggle-input-method' (\\[toggle-input-method]).
The value is a cons of language name and input method name.")
`toggle-input-method' (\\[toggle-input-method]).")
(make-variable-buffer-local 'default-input-method)
(put 'default-input-method 'permanent-local t)
(defvar default-input-method-title nil
"Title string of the default input method.")
(make-variable-buffer-local 'default-input-method-title)
(put 'default-input-method-title 'permanent-local t)
(defvar previous-input-method nil
"Input method selected previously.
"Input method selected previously in the current buffer.
This is the one selected before the current input method is selected.
See also the documentation of `default-input-method'.")
(make-variable-buffer-local 'previous-input-method)
......@@ -323,66 +366,59 @@ 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)
(defun register-input-method (language-name input-method)
"Register INPUT-METHOD as an input method of LANGUAGE-NAME.
LANGUAGE-NAME is a string.
INPUT-METHOD is a list of the form:
where METHOD-NAME is the name of this method,
ACTIVATE-FUNC is the function to call for activating this method.
Arguments for the function are METHOD-NAME and ARGs."
(let ((slot (get-language-info language-name 'input-method))
(if (null slot)
(set-language-info language-name 'input-method (list input-method))
(setq method-slot (assoc (car input-method) slot))
(if method-slot
(setcdr method-slot (cdr input-method))
(set-language-info language-name 'input-method
(cons input-method slot))))))
(defun read-language-and-input-method-name ()
"Read a language name and the corresponding input method from a minibuffer.
Return a list of those names."
(let* ((default-val (or previous-input-method default-input-method))
(language-name (read-language-name
'input-method "Language: "
(if default-val (cons (car default-val) 0)))))
(if (null language-name)
(error "No input method for the specified language"))
(if (not (string= language-name (car default-val)))
;; Now the default value has no meaning.
(setq default-val nil))
(let* ((completion-ignore-case t)
(key-slot (cdr (assq 'input-method
(assoc language-name language-info-alist))))
(completing-read "Input method: " key-slot nil t
(if default-val (cons (cdr default-val) 0)))))
(if (= (length method-name) 0)
(error "No input method specified"))
(list language-name
(car (assoc-ignore-case method-name key-slot))))))
;; Actvate input method METHOD-NAME for langauge LANGUAGE-NAME.
(defun activate-input-method (language-name method-name)
(defvar input-method-alist nil
"Alist of input method names vs the corresponding information to use it.
Each element has the form:
See the function `register-input-method' for the meanings of each elements.")
(defun register-input-method (input-method language-name &rest args)
"Register INPUT-METHOD as an input method for LANGUAGE-NAME.
The remaining arguments are:
ACTIVATE-FUNC is a function to call for activating this method.
TITLE is a string shown in mode-line while this method is active,
DESCRIPTION is a string describing about this method,
Arguments to ACTIVATE-FUNC are INPUT-METHOD and ARGs."
(let ((info (cons language-name 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 initial-input inhibit-null)
"Read a name of input method from a minibuffer prompting with PROMPT.
If INITIAL-INPUT is non-nil, insert it in the minibuffer initially.
If it is (STRING . POSITION), the initial input
is STRING, but point is placed POSITION characters into the string.
If INHIBIT-NULL is non-nil, null input signals an error."
(let* ((completion-ignore-case t)
(input-method (completing-read prompt input-method-alist
nil t initial-input)))
(if (> (length input-method) 0)
(if inhibit-null
(error "The specified input method is not avairable")))))
;; Actvate INPUT-METHOD.
(defun activate-input-method (input-method)
(if (and current-input-method
(or (not (string= (car current-input-method) language-name))
(not (string= (cdr current-input-method) method-name))))
(not (string= current-input-method input-method)))
(or current-input-method
(let* ((key-slot (get-language-info language-name 'input-method))
(method-slot (cdr (assoc method-name key-slot))))
(if (null method-slot)
(error "Invalid input method `%s' for %s"
method-name language-name))
(apply (car method-slot) method-name (cdr method-slot))
(setq current-input-method (cons language-name method-name))
(if (not (equal default-input-method current-input-method))
(setq previous-input-method default-input-method)
(setq default-input-method current-input-method)
(setq default-input-method-title current-input-method-title))))))
(if current-input-method
nil ; We have nothing to do.
(let ((slot (assoc input-method input-method-alist)))
(if (null slot)
(error "Invalid input method `%s'" input-method))
(apply (nth 2 slot) input-method (nthcdr 5 slot))
(setq current-input-method input-method)
(setq current-input-method-title (nth 3 slot))
(if (not (string= default-input-method current-input-method))
(setq previous-input-method default-input-method
default-input-method current-input-method)))))
;; Inactivate the current input method.
(defun inactivate-input-method ()
......@@ -391,44 +427,52 @@ Return a list of those names."
(funcall inactivate-current-input-method-function)
(setq current-input-method nil))))
(defun select-input-method (language-name method-name)
"Select and activate input method METHOD-NAME for inputting LANGUAGE-NAME.
(defun select-input-method (input-method)
"Select and activate INPUT-METHOD.
Both the default and local values of default-input-method are
set to the selected input method.
The information for activating METHOD-NAME is stored
in `language-info-alist' under the key 'input-method.
The format of the information has the form:
where ACTIVATE-FUNC is a function to call for activating this method.
Arguments for the function are METHOD-NAME and ARGs."
(interactive (read-language-and-input-method-name))
(activate-input-method language-name method-name)
(setq-default default-input-method default-input-method)
(setq-default default-input-method-title default-input-method-title))
See also the function `register-input-method'."
(let* ((default (or previous-input-method default-input-method))
(initial (if default (cons default 0))))
(list (read-input-method-name "Input method: " initial t))))
(activate-input-method input-method)
(setq-default default-input-method default-input-method))
(defun toggle-input-method (&optional arg)
"Turn on or off a multilingual text input method for the current buffer.
With arg, turn on an input method specified interactively.
With arg, read an input method from minibuffer and turn it on.
Without arg, if some input method is currently activated, turn it off,
else turn on default-input-method (which see).
In the latter case, if default-input-method is nil, select an input method
(interactive "P")
(if arg
(let ((input-method (read-language-and-input-method-name)))
(activate-input-method (car input-method) (nth 1 input-method)))
(if current-input-method
(if default-input-method
(activate-input-method (car default-input-method)
(cdr default-input-method))
(let ((input-method (read-language-and-input-method-name)))
(activate-input-method (car input-method) (nth 1 input-method)))))))
(defun describe-input-method ()
(let* ((default (or previous-input-method default-input-method))
(initial (if default (cons default 0))))
(if arg
(read-input-method-name "Input method: " initial t))
(if current-input-method
(if default-input-method
(activate-input-method default-input-method)
(read-input-method-name "Input method: " initial t)))))))
(defun describe-input-method (input-method)
"Describe the current input method."
(list (read-input-method-name
"Describe input method (default, current choice): ")))
(if (null input-method)
(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 turned on."
(if current-input-method
(if (and (symbolp describe-current-input-method-function)
(fboundp describe-current-input-method-function))
......@@ -436,24 +480,20 @@ interactively."
(message "No way to describe the current input method `%s'"
(cdr current-input-method))
(message "No input method is activated now")
(error "No input method is activated now")))
(defun read-multilingual-string (prompt &optional initial-input
language-name method-name)
"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
Optional 3rd and 4th arguments LANGUAGE-NAME and METHOD-NAME specify
the input method to be activated instead of the one selected last time."
(let ((default-input-method default-input-method))
(if (and language-name method-name)
(setq default-input-method (cons language-name method-name))
(or default-input-method
(let ((lang-and-input-method (read-language-and-input-method-name)))
(setq default-input-method (cons (car lang-and-input-method)
(nth 1 lang-and-input-method))))))
Optional 3rd argument INPUT-METHOD specifies the input method
to be activated instead of the one selected last time."
(let ((default-input-method
(or input-method
(read-input-method-name "Input method: " nil t))))
(let ((minibuffer-setup-hook '(toggle-input-method)))
(read-string prompt initial-input))))
......@@ -530,18 +570,21 @@ and sometimes other things."
(let ((doc (get-language-info language-name 'documentation)))
(with-output-to-temp-buffer "*Help*"
(if (stringp doc)
(princ-list doc))
(princ-list doc)
(let ((str (get-language-info language-name 'sample-text)))
(if (stringp str)
(princ "Sample text:\n")
(princ-list " " str))))
(princ-list " " str)
(princ "Input methods:\n")
(let ((l (get-language-info language-name 'input-method)))
(let ((l input-method-alist))
(while l
(princ-list " " (car (car l)))
(if (string= language-name (nth 1 (car l)))
(princ-list " " (car (car l))
(format " (`%s' in mode line)" (nth 3 (car l)))))
(setq l (cdr l))))
(princ "Character sets:\n")
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