;;; descr-text.el --- describe text mode
-;; Copyright (c) 1994, 1995, 1996, 2001, 02, 03 Free Software Foundation, Inc.
+;; Copyright (C) 1994, 1995, 1996, 2001, 2002, 2003, 2004,
+;; 2005, 2006 Free Software Foundation, Inc.
;; Author: Boris Goldowsky <boris@gnu.org>
-;; Keywords: faces
+;; Maintainer: FSF
+;; Keywords: faces, i18n, Unicode, multilingual
;; This file is part of GNU Emacs.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
;;; Commentary:
;;; Code:
-(eval-when-compile (require 'button))
-
-(defun describe-text-done ()
- "Delete the current window or bury the current buffer."
- (interactive)
- (if (> (count-windows) 1)
- (delete-window)
- (bury-buffer)))
-
-(defvar describe-text-mode-map
- (let ((map (make-sparse-keymap)))
- (set-keymap-parent map widget-keymap)
- map)
- "Keymap for `describe-text-mode'.")
-
-(defcustom describe-text-mode-hook nil
- "List of hook functions ran by `describe-text-mode'."
- :type 'hook
- :group 'facemenu)
-
-(defun describe-text-mode ()
- "Major mode for buffers created by `describe-char'.
-
-\\{describe-text-mode-map}
-Entry to this mode calls the value of `describe-text-mode-hook'
-if that value is non-nil."
- (kill-all-local-variables)
- (setq major-mode 'describe-text-mode
- mode-name "Describe-Text")
- (use-local-map describe-text-mode-map)
- (widget-setup)
- (add-hook 'change-major-mode-hook 'font-lock-defontify nil t)
- (run-hooks 'describe-text-mode-hook))
+(eval-when-compile (require 'quail))
+(require 'help-fns)
;;; Describe-Text Utilities.
(defun describe-text-widget (widget)
"Insert text to describe WIDGET in the current buffer."
- (widget-create 'link
- :notify `(lambda (&rest ignore)
- (widget-browse ',widget))
- (format "%S" (if (symbolp widget)
- widget
- (car widget))))
- (widget-insert " ")
- (widget-create 'info-link :tag "widget" "(widget)Top"))
+ (insert-text-button
+ (symbol-name (if (symbolp widget) widget (car widget)))
+ 'action `(lambda (&rest ignore)
+ (widget-browse ',widget))
+ 'help-echo "mouse-2, RET: browse this widget")
+ (insert " ")
+ (insert-text-button
+ "(widget)Top" 'type 'help-info 'help-args '("(widget)Top")))
(defun describe-text-sexp (sexp)
"Insert a short description of SEXP in the current buffer."
((> (length pp) (- (window-width) (current-column)))
nil)
(t t))
- (widget-insert pp)
- (widget-create 'push-button
- :tag "show"
- :action (lambda (widget &optional event)
- (with-output-to-temp-buffer
- "*Pp Eval Output*"
- (princ (widget-get widget :value))))
- pp))))
+ (insert pp)
+ (insert-text-button
+ "[Show]" 'action `(lambda (&rest ignore)
+ (with-output-to-temp-buffer
+ "*Pp Eval Output*"
+ (princ ',pp)))
+ 'help-echo "mouse-2, RET: pretty print value in another buffer"))))
(defun describe-property-list (properties)
"Insert a description of PROPERTIES in the current buffer.
PROPERTIES should be a list of overlay or text properties.
-The `category' property is made into a widget button that call
-`describe-text-category' when pushed."
+The `category', `face' and `font-lock-face' properties are made
+into help buttons that call `describe-text-category' or
+`describe-face' when pushed."
;; Sort the properties by the size of their value.
- (dolist (elt (sort (let ((ret nil)
- (key nil)
- (val nil)
- (len nil))
+ (dolist (elt (sort (let (ret)
(while properties
- (setq key (pop properties)
- val (pop properties)
- len 0)
- (unless (or (eq key 'category)
- (widgetp val))
- (setq val (pp-to-string val)
- len (length val)))
- (push (list key val len) ret))
+ (push (list (pop properties) (pop properties)) ret))
ret)
- (lambda (a b)
- (< (nth 2 a)
- (nth 2 b)))))
+ (lambda (a b) (string< (prin1-to-string (nth 0 a) t)
+ (prin1-to-string (nth 0 b) t)))))
(let ((key (nth 0 elt))
(value (nth 1 elt)))
- (widget-insert (propertize (format " %-20s " key)
- 'font-lock-face 'italic))
+ (insert (propertize (format " %-20s " key)
+ 'face 'help-argument-name))
(cond ((eq key 'category)
- (widget-create 'link
- :notify `(lambda (&rest ignore)
- (describe-text-category ',value))
- (format "%S" value)))
- ((widgetp value)
+ (insert-text-button
+ (symbol-name value)
+ 'action `(lambda (&rest ignore)
+ (describe-text-category ',value))
+ 'help-echo "mouse-2, RET: describe this category"))
+ ((memq key '(face font-lock-face mouse-face))
+ (insert-text-button
+ (format "%S" value)
+ 'type 'help-face 'help-args (list value)))
+ ((widgetp value)
(describe-text-widget value))
(t
- (widget-insert value))))
- (widget-insert "\n")))
+ (describe-text-sexp value))))
+ (insert "\n")))
\f
;;; Describe-Text Commands.
(defun describe-text-category (category)
"Describe a text property category."
- (interactive "S")
+ (interactive "SCategory: ")
+ (help-setup-xref (list #'describe-text-category category) (interactive-p))
(save-excursion
(with-output-to-temp-buffer "*Help*"
(set-buffer standard-output)
- (widget-insert "Category " (format "%S" category) ":\n\n")
+ (insert "Category " (format "%S" category) ":\n\n")
(describe-property-list (symbol-plist category))
- (describe-text-mode)
(goto-char (point-min)))))
;;;###autoload
(describe-text-properties-1 pos output-buffer)
(if (not (or (text-properties-at pos) (overlays-at pos)))
(message "This is plain text.")
- (let ((buffer (current-buffer)))
- (when (eq buffer (get-buffer "*Help*"))
- (error "Can't do self inspection"))
+ (let ((buffer (current-buffer))
+ (target-buffer "*Help*"))
+ (when (eq buffer (get-buffer target-buffer))
+ (setq target-buffer "*Help*<2>"))
(save-excursion
- (with-output-to-temp-buffer "*Help*"
+ (with-output-to-temp-buffer target-buffer
(set-buffer standard-output)
(setq output-buffer (current-buffer))
- (widget-insert "Text content at position " (format "%d" pos) ":\n\n")
+ (insert "Text content at position " (format "%d" pos) ":\n\n")
(with-current-buffer buffer
(describe-text-properties-1 pos output-buffer))
- (describe-text-mode)
(goto-char (point-min))))))))
(defun describe-text-properties-1 (pos output-buffer)
(let* ((properties (text-properties-at pos))
(overlays (overlays-at pos))
- overlay
(wid-field (get-char-property pos 'field))
(wid-button (get-char-property pos 'button))
(wid-doc (get-char-property pos 'widget-doc))
;; Widgets
(when (widgetp widget)
(newline)
- (widget-insert (cond (wid-field "This is an editable text area")
- (wid-button "This is an active area")
- (wid-doc "This is documentation text")))
- (widget-insert " of a ")
+ (insert (cond (wid-field "This is an editable text area")
+ (wid-button "This is an active area")
+ (wid-doc "This is documentation text")))
+ (insert " of a ")
(describe-text-widget widget)
- (widget-insert ".\n\n"))
+ (insert ".\n\n"))
;; Buttons
(when (and button (not (widgetp wid-button)))
(newline)
- (widget-insert "Here is a " (format "%S" button-type)
- " button labeled `" button-label "'.\n\n"))
+ (insert "Here is a `" (format "%S" button-type)
+ "' button labeled `" button-label "'.\n\n"))
;; Overlays
(when overlays
(newline)
(if (eq (length overlays) 1)
- (widget-insert "There is an overlay here:\n")
- (widget-insert "There are " (format "%d" (length overlays))
+ (insert "There is an overlay here:\n")
+ (insert "There are " (format "%d" (length overlays))
" overlays here:\n"))
(dolist (overlay overlays)
- (widget-insert " From " (format "%d" (overlay-start overlay))
+ (insert " From " (format "%d" (overlay-start overlay))
" to " (format "%d" (overlay-end overlay)) "\n")
(describe-property-list (overlay-properties overlay)))
- (widget-insert "\n"))
+ (insert "\n"))
;; Text properties
(when properties
(newline)
- (widget-insert "There are text properties here:\n")
+ (insert "There are text properties here:\n")
(describe-property-list properties)))))
-
-(defcustom unicodedata-file nil
+\f
+(defcustom describe-char-unicodedata-file nil
"Location of Unicode data file.
This is the UnicodeData.txt file from the Unicode consortium, used for
-diagnostics. If it is non-nil `describe-char-after' will print data
+diagnostics. If it is non-nil `describe-char' will print data
looked up from it. This facility is mostly of use to people doing
multilingual development.
This is a fairly large file, not typically present on GNU systems. At
-the time of writing it is at
-<URL:ftp://www.unicode.org/Public/UNIDATA/UnicodeData.txt>."
+the time of writing it is at the URL
+`http://www.unicode.org/Public/UNIDATA/UnicodeData.txt'."
:group 'mule
- :version "21.5"
+ :version "22.1"
:type '(choice (const :tag "None" nil)
file))
;; "LATIN SMALL LETTER A" => '(LATIN SMALL LETTER A).
;; Fixme: Check whether this needs updating for Unicode 4.
-(defun unicode-data (char)
+(defun describe-char-unicode-data (char)
"Return a list of Unicode data for unicode CHAR.
Each element is a list of a property description and the property value.
-The list is null if CHAR isn't found in `unicodedata-file'."
- (when unicodedata-file
- (unless (file-exists-p unicodedata-file)
- (error "`unicodedata-file' %s not found" unicodedata-file))
- (save-excursion
- ;; Find file in fundamental mode to avoid, e.g. flyspell turned
- ;; on for .txt. Don't use RAWFILE arg in case of DOS line endings.
- (set-buffer (let ((auto-mode-alist))
- (find-file-noselect unicodedata-file)))
+The list is null if CHAR isn't found in `describe-char-unicodedata-file'."
+ (when describe-char-unicodedata-file
+ (unless (file-exists-p describe-char-unicodedata-file)
+ (error "`unicodedata-file' %s not found" describe-char-unicodedata-file))
+ (with-current-buffer
+ ;; Find file in fundamental mode to avoid, e.g. flyspell turned
+ ;; on for .txt. Don't use RAWFILE arg in case of DOS line endings.
+ (let ((auto-mode-alist))
+ (find-file-noselect describe-char-unicodedata-file))
(goto-char (point-min))
(let ((hex (format "%04X" char))
found first last)
;; The length depends on whether the last field was empty.
(unless (or (= 13 (length fields))
(= 14 (length fields)))
- (error "Invalid contents in %s" unicodedata-file))
+ (error "Invalid contents in %s" describe-char-unicodedata-file))
;; The field names and values lists are slightly
;; modified from Mule-UCS unidata.el.
(list
(string-to-number (nth 2 fields))
'((0 . "Spacing")
(1 . "Overlays and interior")
- (7 . "Nuktas")
+ (7 . "Nuktas")
(8 . "Hiragana/Katakana voicing marks")
(9 . "Viramas")
(10 . "Start of fixed position classes")
(nth 13 fields) 16))
??)))))))))))
+;; Return information about how CHAR is displayed at the buffer
+;; position POS. If the selected frame is on a graphic display,
+;; return a cons (FONTNAME . GLYPH-CODE). Otherwise, return a string
+;; describing the terminal codes for the character.
+(defun describe-char-display (pos char)
+ (if (display-graphic-p (selected-frame))
+ (internal-char-font pos char)
+ (let* ((coding (terminal-coding-system))
+ (encoded (encode-coding-char char coding)))
+ (if encoded
+ (encoded-string-description encoded coding)))))
+
+\f
;;;###autoload
(defun describe-char (pos)
"Describe the character after POS (interactively, the character after point).
(error "No character follows specified position"))
(let* ((char (char-after pos))
(charset (char-charset char))
- (buffer (current-buffer))
(composition (find-composition pos nil nil t))
- (composed (if composition (buffer-substring (car composition)
- (nth 1 composition))))
+ (component-chars nil)
+ (display-table (or (window-display-table)
+ buffer-display-table
+ standard-display-table))
+ (disp-vector (and display-table (aref display-table char)))
(multibyte-p enable-multibyte-characters)
+ (overlays (mapcar #'(lambda (o) (overlay-properties o))
+ (overlays-at pos)))
+ (char-description (if (not multibyte-p)
+ (single-key-description char)
+ (if (< char 128)
+ (single-key-description char)
+ (string-to-multibyte
+ (char-to-string char)))))
+ (text-props-desc
+ (let ((tmp-buf (generate-new-buffer " *text-props*")))
+ (unwind-protect
+ (progn
+ (describe-text-properties pos tmp-buf)
+ (with-current-buffer tmp-buf (buffer-string)))
+ (kill-buffer tmp-buf))))
item-list max-width unicode)
- (if (eq charset 'unknown)
- (setq item-list
- `(("character"
- ,(format "%s (0%o, %d, 0x%x) -- invalid character code"
- (if (< char 256)
- (single-key-description char)
- (char-to-string char))
- char char char))))
- (if (or (< (char-after) 256)
- (memq 'mule-utf-8 (find-coding-systems-region pos (1+ pos)))
- (get-char-property pos 'untranslated-utf-8))
- (setq unicode (or (get-char-property pos 'untranslated-utf-8)
- (encode-char char 'ucs))))
- (setq item-list
- `(("character"
- ,(format "%s (0%o, %d, 0x%x%s)" (if (< char 256)
- (single-key-description char)
- (char-to-string char))
- char char char
- (if unicode
- (format ", U+%04X" (encode-char char 'ucs))
- "")))
- ("charset"
- ,(symbol-name charset)
- ,(format "(%s)" (charset-description charset)))
- ("code point"
- ,(let ((split (split-char char)))
- (if (= (charset-dimension charset) 1)
- (format "%d" (nth 1 split))
- (format "%d %d" (nth 1 split) (nth 2 split)))))
- ("syntax"
- ,(let ((syntax (syntax-after pos)))
- (with-temp-buffer
- (internal-describe-syntax-value syntax)
- (buffer-string))))
- ("category"
- ,@(let ((category-set (char-category-set char)))
- (if (not category-set)
- '("-- none --")
- (mapcar #'(lambda (x) (format "%c:%s "
- x (category-docstring x)))
- (category-set-mnemonics category-set)))))
- ,@(let ((props (aref char-code-property-table char))
- ps)
- (when props
- (while props
- (push (format "%s:" (pop props)) ps)
- (push (format "%s;" (pop props)) ps))
- (list (cons "Properties" (nreverse ps)))))
- ("buffer code"
- ,(encoded-string-description
- (string-as-unibyte (char-to-string char)) nil))
- ("file code"
- ,@(let* ((coding buffer-file-coding-system)
- (encoded (encode-coding-char char coding)))
- (if encoded
- (list (encoded-string-description encoded coding)
- (format "(encoded by coding system %S)" coding))
- (list "not encodable by coding system"
- (symbol-name coding)))))
- ,(if (display-graphic-p (selected-frame))
- (list "font" (or (internal-char-font pos)
- "-- none --"))
- (list "terminal code"
- (let* ((coding (terminal-coding-system))
- (encoded (encode-coding-char char coding)))
- (if encoded
- (encoded-string-description encoded coding)
- "not encodable"))))
- ,@(let ((unicodedata (and unicode
- (unicode-data unicode))))
- (if unicodedata
- (cons (list "Unicode data" " ") unicodedata))))))
- (setq max-width (apply #'max (mapcar #'(lambda (x) (length (car x)))
+ (if (or (< char 256)
+ (memq 'mule-utf-8 (find-coding-systems-region pos (1+ pos)))
+ (get-char-property pos 'untranslated-utf-8))
+ (setq unicode (or (get-char-property pos 'untranslated-utf-8)
+ (encode-char char 'ucs))))
+ (setq item-list
+ `(("character"
+ ,(format "%s (%d, #o%o, #x%x%s)"
+ (apply 'propertize char-description
+ (text-properties-at pos))
+ char char char
+ (if unicode
+ (format ", U+%04X" unicode)
+ "")))
+ ("charset"
+ ,`(insert-text-button
+ ,(symbol-name charset)
+ 'type 'help-character-set 'help-args '(,charset))
+ ,(format "(%s)" (charset-description charset)))
+ ("code point"
+ ,(let ((split (split-char char)))
+ `(insert-text-button
+ ,(if (= (charset-dimension charset) 1)
+ (format "#x%02X" (nth 1 split))
+ (format "#x%02X #x%02X" (nth 1 split)
+ (nth 2 split)))
+ 'action (lambda (&rest ignore)
+ (list-charset-chars ',charset)
+ (with-selected-window
+ (get-buffer-window "*Character List*" 0)
+ (goto-char (point-min))
+ (forward-line 2) ;Skip the header.
+ (let ((case-fold-search nil))
+ (search-forward ,(char-to-string char)
+ nil t))))
+ 'help-echo
+ "mouse-2, RET: show this character in its character set")))
+ ("syntax"
+ ,(let ((syntax (syntax-after pos)))
+ (with-temp-buffer
+ (internal-describe-syntax-value syntax)
+ (buffer-string))))
+ ("category"
+ ,@(let ((category-set (char-category-set char)))
+ (if (not category-set)
+ '("-- none --")
+ (mapcar #'(lambda (x) (format "%c:%s"
+ x (category-docstring x)))
+ (category-set-mnemonics category-set)))))
+ ,@(let ((props (aref char-code-property-table char))
+ ps)
+ (when props
+ (while props
+ (push (format "%s:" (pop props)) ps)
+ (push (format "%s;" (pop props)) ps))
+ (list (cons "Properties" (nreverse ps)))))
+ ("to input"
+ ,@(let ((key-list (and (eq input-method-function
+ 'quail-input-method)
+ (quail-find-key char))))
+ (if (consp key-list)
+ (list "type"
+ (mapconcat #'(lambda (x) (concat "\"" x "\""))
+ key-list " or ")
+ "with"
+ `(insert-text-button
+ ,current-input-method
+ 'type 'help-input-method
+ 'help-args '(,current-input-method))))))
+ ("buffer code"
+ ,(encoded-string-description
+ (string-as-unibyte (char-to-string char)) nil))
+ ("file code"
+ ,@(let* ((coding buffer-file-coding-system)
+ (encoded (encode-coding-char char coding)))
+ (if encoded
+ (list (encoded-string-description encoded coding)
+ (format "(encoded by coding system %S)" coding))
+ (list "not encodable by coding system"
+ (symbol-name coding)))))
+ ("display"
+ ,(cond
+ (disp-vector
+ (setq disp-vector (copy-sequence disp-vector))
+ (dotimes (i (length disp-vector))
+ (setq char (aref disp-vector i))
+ (aset disp-vector i
+ (cons char (describe-char-display
+ pos (logand char #x7ffff)))))
+ (format "by display table entry [%s] (see below)"
+ (mapconcat
+ #'(lambda (x)
+ (format "?%c" (logand (car x) #x7ffff)))
+ disp-vector " ")))
+ (composition
+ (let ((from (car composition))
+ (to (nth 1 composition))
+ (next (1+ pos))
+ (components (nth 2 composition))
+ ch)
+ (setcar composition
+ (and (< from pos) (buffer-substring from pos)))
+ (setcar (cdr composition)
+ (and (< next to) (buffer-substring next to)))
+ (dotimes (i (length components))
+ (if (integerp (setq ch (aref components i)))
+ (push (cons ch (describe-char-display pos ch))
+ component-chars)))
+ (setq component-chars (nreverse component-chars))
+ (format "composed to form \"%s\" (see below)"
+ (buffer-substring from to))))
+ (t
+ (let ((display (describe-char-display pos char)))
+ (if (display-graphic-p (selected-frame))
+ (if display
+ (concat
+ "by this font (glyph code)\n"
+ (format " %s (#x%02X)"
+ (car display) (cdr display)))
+ "no font available")
+ (if display
+ (format "terminal code %s" display)
+ "not encodable for terminal"))))))
+ ,@(let ((face
+ (if (not (or disp-vector composition))
+ (cond
+ ((and show-trailing-whitespace
+ (save-excursion (goto-char pos)
+ (looking-at "[ \t]+$")))
+ 'trailing-whitespace)
+ ((and nobreak-char-display unicode (eq unicode '#xa0))
+ 'nobreak-space)
+ ((and nobreak-char-display unicode (eq unicode '#xad))
+ 'escape-glyph)
+ ((and (< char 32) (not (memq char '(9 10))))
+ 'escape-glyph)))))
+ (if face (list (list "hardcoded face"
+ `(insert-text-button
+ ,(symbol-name face)
+ 'type 'help-face 'help-args '(,face))))))
+ ,@(let ((unicodedata (and unicode
+ (describe-char-unicode-data unicode))))
+ (if unicodedata
+ (cons (list "Unicode data" " ") unicodedata)))))
+ (setq max-width (apply #'max (mapcar #'(lambda (x)
+ (if (cadr x) (length (car x)) 0))
item-list)))
- (when (eq (current-buffer) (get-buffer "*Help*"))
- (error "Can't describe char in Help buffer"))
- (with-output-to-temp-buffer "*Help*"
+ (help-setup-xref nil (interactive-p))
+ (with-output-to-temp-buffer (help-buffer)
(with-current-buffer standard-output
(set-buffer-multibyte multibyte-p)
(let ((formatter (format "%%%ds:" max-width)))
(when (cadr elt)
(insert (format formatter (car elt)))
(dolist (clm (cdr elt))
- (when (>= (+ (current-column)
- (or (string-match "\n" clm)
- (string-width clm)) 1)
- (frame-width))
- (insert "\n")
- (indent-to (1+ max-width)))
- (insert " " clm))
+ (if (eq (car-safe clm) 'insert-text-button)
+ (progn (insert " ") (eval clm))
+ (when (>= (+ (current-column)
+ (or (string-match "\n" clm)
+ (string-width clm))
+ 1)
+ (window-width))
+ (insert "\n")
+ (indent-to (1+ max-width)))
+ (insert " " clm)))
(insert "\n"))))
- (when composition
- (insert "\nComposed with the "
- (cond
- ((eq pos (car composition)) "following ")
- ((eq (1+ pos) (cadr composition)) "preceding ")
- (t ""))
- "character(s) `"
- (cond
- ((eq pos (car composition)) (substring composed 1))
- ((eq (1+ pos) (cadr composition)) (substring composed 0 -1))
- (t (concat (substring composed 0 (- pos (car composition)))
- "' and `"
- (substring composed (- (1+ pos) (car composition))))))
- "' to form `" composed "'")
- (if (nth 3 composition)
- (insert ".\n")
- (insert "\nby the rule ("
- (mapconcat (lambda (x)
- (format (if (consp x) "%S" "?%c") x))
- (nth 2 composition)
- " ")
- ").\n"
- "See the variable `reference-point-alist' for "
- "the meaning of the rule.\n")))
+ (when overlays
+ (save-excursion
+ (goto-char (point-min))
+ (re-search-forward "character:[ \t\n]+")
+ (let* ((end (+ (point) (length char-description))))
+ (mapc #'(lambda (props)
+ (let ((o (make-overlay (point) end)))
+ (while props
+ (overlay-put o (car props) (nth 1 props))
+ (setq props (cddr props)))))
+ overlays))))
+
+ (when disp-vector
+ (insert
+ "\nThe display table entry is displayed by ")
+ (if (display-graphic-p (selected-frame))
+ (progn
+ (insert "these fonts (glyph codes):\n")
+ (dotimes (i (length disp-vector))
+ (insert (logand (car (aref disp-vector i)) #x7ffff) ?:
+ (propertize " " 'display '(space :align-to 5))
+ (if (cdr (aref disp-vector i))
+ (format "%s (#x%02X)" (cadr (aref disp-vector i))
+ (cddr (aref disp-vector i)))
+ "-- no font --")
+ "\n")
+ (when (> (car (aref disp-vector i)) #x7ffff)
+ (let* ((face-id (lsh (car (aref disp-vector i)) -19))
+ (face (car (delq nil (mapcar
+ (lambda (face)
+ (and (eq (face-id face)
+ face-id) face))
+ (face-list))))))
+ (when face
+ (insert (propertize " " 'display '(space :align-to 5))
+ "face: ")
+ (insert (concat "`" (symbol-name face) "'"))
+ (insert "\n"))))))
+ (insert "these terminal codes:\n")
+ (dotimes (i (length disp-vector))
+ (insert (car (aref disp-vector i))
+ (propertize " " 'display '(space :align-to 5))
+ (or (cdr (aref disp-vector i)) "-- not encodable --")
+ "\n"))))
- (let ((output (current-buffer)))
- (with-current-buffer buffer
- (describe-text-properties pos output))
- (describe-text-mode))))))
+ (when composition
+ (insert "\nComposed")
+ (if (car composition)
+ (if (cadr composition)
+ (insert " with the surrounding characters \""
+ (car composition) "\" and \""
+ (cadr composition) "\"")
+ (insert " with the preceding character(s) \""
+ (car composition) "\""))
+ (if (cadr composition)
+ (insert " with the following character(s) \""
+ (cadr composition) "\"")))
+ (insert " by the rule:\n\t("
+ (mapconcat (lambda (x)
+ (format (if (consp x) "%S" "?%c") x))
+ (nth 2 composition)
+ " ")
+ ")")
+ (insert "\nThe component character(s) are displayed by ")
+ (if (display-graphic-p (selected-frame))
+ (progn
+ (insert "these fonts (glyph codes):")
+ (dolist (elt component-chars)
+ (insert "\n " (car elt) ?:
+ (propertize " " 'display '(space :align-to 5))
+ (if (cdr elt)
+ (format "%s (#x%02X)" (cadr elt) (cddr elt))
+ "-- no font --"))))
+ (insert "these terminal codes:")
+ (dolist (elt component-chars)
+ (insert "\n " (car elt) ":"
+ (propertize " " 'display '(space :align-to 5))
+ (or (cdr elt) "-- not encodable --"))))
+ (insert "\nSee the variable `reference-point-alist' for "
+ "the meaning of the rule.\n"))
+
+ (if text-props-desc (insert text-props-desc))
+ (setq help-xref-stack-item (list 'help-insert-string (buffer-string)))
+ (toggle-read-only 1)
+ (print-help-return-message)))))
(defalias 'describe-char-after 'describe-char)
-(make-obsolete 'describe-char-after 'describe-char "21.5")
+(make-obsolete 'describe-char-after 'describe-char "22.1")
(provide 'descr-text)
+;; arch-tag: fc55a498-f3e9-4312-b5bd-98cc02480af1
;;; descr-text.el ends here