lisp/hexl.el

   1 ;;; hexl.el --- edit a file in a hex dump format using the hexl filter
   2
   3 ;; Copyright (C) 1989, 1994, 1998, 2001, 2002, 2003, 2004,
   4 ;;   2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
   5
   6 ;; Author: Keith Gabryelski <ag@wheaties.ai.mit.edu>
   7 ;; Maintainer: FSF
   8 ;; Keywords: data
   9
  10 ;; This file is part of GNU Emacs.
  11
  12 ;; GNU Emacs is free software: you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation, either version 3 of the License, or
  15 ;; (at your option) any later version.
  16
  17 ;; GNU Emacs is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  24
  25 ;;; Commentary:
  26
  27 ;; This package implements a major mode for editing binary files.  It uses
  28 ;; a program called hexl, supplied with the GNU Emacs distribution, that
  29 ;; can filter a binary into an editable format or from the format back into
  30 ;; binary.  For full instructions, invoke `hexl-mode' on an empty buffer and
  31 ;; do M-x `describe-mode'.
  32 ;;
  33 ;; NOTE: Remember to change `hexl-program' or `hexl-options' if needed.
  34 ;;
  35 ;; Currently hexl only supports big endian hex output with 16 bit
  36 ;; grouping.
  37 ;;
  38 ;; -iso in `hexl-options' will allow iso characters to display in the
  39 ;; ASCII region of the screen (if your Emacs supports this) instead of
  40 ;; changing them to dots.
  41
  42 ;;; Code:
  43
  44 (require 'eldoc)
  45 (eval-when-compile (require 'cl))
  46
  47 ;;
  48 ;; vars here
  49 ;;
  50
  51 (defgroup hexl nil
  52   "Edit a file in a hex dump format using the hexl filter."
  53   :group 'data)
  54
  55
  56 (defcustom hexl-program "hexl"
  57   "The program that will hexlify and dehexlify its stdin.
  58 `hexl-program' will always be concatenated with `hexl-options'
  59 and \"-de\" when dehexlifying a buffer."
  60   :type 'string
  61   :group 'hexl)
  62
  63 (defcustom hexl-iso ""
  64   "If your Emacs can handle ISO characters, this should be set to
  65 \"-iso\" otherwise it should be \"\"."
  66   :type 'string
  67   :group 'hexl)
  68
  69 (defcustom hexl-options (format "-hex %s" hexl-iso)
  70   "Space separated options to `hexl-program' that suit your needs.
  71 Quoting cannot be used, so the arguments cannot themselves contain spaces."
  72   :type 'string
  73   :group 'hexl)
  74
  75 (defcustom hexl-follow-ascii t
  76   "If non-nil then highlight the ASCII character corresponding to point."
  77   :type 'boolean
  78   :group 'hexl
  79   :version "20.3")
  80
  81 (defcustom hexl-mode-hook '(hexl-follow-line hexl-activate-ruler)
  82   "Normal hook run when entering Hexl mode."
  83   :type 'hook
  84   :options '(hexl-follow-line hexl-activate-ruler turn-on-eldoc-mode)
  85   :group 'hexl)
  86
  87 (defface hexl-address-region
  88   '((t (:inherit header-line)))
  89   "Face used in address area of hexl-mode buffer."
  90   :group 'hexl)
  91
  92 (defface hexl-ascii-region
  93   '((t (:inherit header-line)))
  94   "Face used in ascii area of hexl-mode buffer."
  95   :group 'hexl)
  96
  97 (defvar hexl-max-address 0
  98   "Maximum offset into hexl buffer.")
  99
 100 (defvar hexl-mode-map
 101   (let ((map (make-keymap)))
 102     ;; Make all self-inserting keys go through hexl-self-insert-command,
 103     ;; because we need to convert them to unibyte characters before
 104     ;; inserting them into the buffer.
 105     (define-key map [remap self-insert-command] 'hexl-self-insert-command)
 106
 107     (define-key map "\C-m" 'hexl-self-insert-command)
 108     (define-key map [left] 'hexl-backward-char)
 109     (define-key map [right] 'hexl-forward-char)
 110     (define-key map [up] 'hexl-previous-line)
 111     (define-key map [down] 'hexl-next-line)
 112     (define-key map [M-left] 'hexl-backward-short)
 113     (define-key map [?\e left] 'hexl-backward-short)
 114     (define-key map [M-right] 'hexl-forward-short)
 115     (define-key map [?\e right] 'hexl-forward-short)
 116     (define-key map [next] 'hexl-scroll-up)
 117     (define-key map [prior] 'hexl-scroll-down)
 118     (define-key map [home] 'hexl-beginning-of-line)
 119     (define-key map [end] 'hexl-end-of-line)
 120     (define-key map [C-home] 'hexl-beginning-of-buffer)
 121     (define-key map [C-end] 'hexl-end-of-buffer)
 122     (define-key map [deletechar] 'undefined)
 123     (define-key map [deleteline] 'undefined)
 124     (define-key map [insertline] 'undefined)
 125     (define-key map [S-delete] 'undefined)
 126     (define-key map "\177" 'undefined)
 127
 128     (define-key map "\C-a" 'hexl-beginning-of-line)
 129     (define-key map "\C-b" 'hexl-backward-char)
 130     (define-key map "\C-d" 'undefined)
 131     (define-key map "\C-e" 'hexl-end-of-line)
 132     (define-key map "\C-f" 'hexl-forward-char)
 133
 134     (if (not (memq (key-binding (char-to-string help-char))
 135                    '(help-command ehelp-command)))
 136         (define-key map (char-to-string help-char) 'undefined))
 137
 138     (define-key map "\C-k" 'undefined)
 139     (define-key map "\C-n" 'hexl-next-line)
 140     (define-key map "\C-o" 'undefined)
 141     (define-key map "\C-p" 'hexl-previous-line)
 142     (define-key map "\C-q" 'hexl-quoted-insert)
 143     (define-key map "\C-t" 'undefined)
 144     (define-key map "\C-v" 'hexl-scroll-up)
 145     (define-key map "\C-w" 'undefined)
 146     (define-key map "\C-y" 'undefined)
 147
 148     (fset 'hexl-ESC-prefix (copy-keymap 'ESC-prefix))
 149     (define-key map "\e" 'hexl-ESC-prefix)
 150     (define-key map "\e\C-a" 'hexl-beginning-of-512b-page)
 151     (define-key map "\e\C-b" 'hexl-backward-short)
 152     (define-key map "\e\C-d" 'hexl-insert-decimal-char)
 153     (define-key map "\e\C-e" 'hexl-end-of-512b-page)
 154     (define-key map "\e\C-f" 'hexl-forward-short)
 155     (define-key map "\e\C-i" 'undefined)
 156     (define-key map "\e\C-j" 'undefined)
 157     (define-key map "\e\C-k" 'undefined)
 158     (define-key map "\e\C-o" 'hexl-insert-octal-char)
 159     (define-key map "\e\C-q" 'undefined)
 160     (define-key map "\e\C-t" 'undefined)
 161     (define-key map "\e\C-x" 'hexl-insert-hex-char)
 162     (define-key map "\eb" 'hexl-backward-word)
 163     (define-key map "\ec" 'undefined)
 164     (define-key map "\ed" 'undefined)
 165     (define-key map "\ef" 'hexl-forward-word)
 166     (define-key map "\eg" 'hexl-goto-hex-address)
 167     (define-key map "\ei" 'undefined)
 168     (define-key map "\ej" 'hexl-goto-address)
 169     (define-key map "\ek" 'undefined)
 170     (define-key map "\el" 'undefined)
 171     (define-key map "\eq" 'undefined)
 172     (define-key map "\es" 'undefined)
 173     (define-key map "\et" 'undefined)
 174     (define-key map "\eu" 'undefined)
 175     (define-key map "\ev" 'hexl-scroll-down)
 176     (define-key map "\ey" 'undefined)
 177     (define-key map "\ez" 'undefined)
 178     (define-key map "\e<" 'hexl-beginning-of-buffer)
 179     (define-key map "\e>" 'hexl-end-of-buffer)
 180
 181     (fset 'hexl-C-c-prefix (copy-keymap mode-specific-map))
 182     (define-key map "\C-c" 'hexl-C-c-prefix)
 183     (define-key map "\C-c\C-c" 'hexl-mode-exit)
 184
 185     (fset 'hexl-C-x-prefix (copy-keymap 'Control-X-prefix))
 186     (define-key map "\C-x" 'hexl-C-x-prefix)
 187     (define-key map "\C-x[" 'hexl-beginning-of-1k-page)
 188     (define-key map "\C-x]" 'hexl-end-of-1k-page)
 189     (define-key map "\C-x\C-p" 'undefined)
 190     (define-key map "\C-x\C-s" 'hexl-save-buffer)
 191     (define-key map "\C-x\C-t" 'undefined)
 192     map))
 193
 194 ;; Variable declarations for suppressing warnings from the byte-compiler.
 195 (defvar ruler-mode)
 196 (defvar ruler-mode-ruler-function)
 197 (defvar hl-line-mode)
 198 (defvar hl-line-range-function)
 199 (defvar hl-line-face)
 200
 201 ;; Variables where the original values are stored to.
 202 (defvar hexl-mode--old-var-vals ())
 203 (make-variable-buffer-local 'hexl-mode--old-var-vals)
 204
 205 (defvar hexl-ascii-overlay nil
 206   "Overlay used to highlight ASCII element corresponding to current point.")
 207 (make-variable-buffer-local 'hexl-ascii-overlay)
 208
 209 (defvar hexl-font-lock-keywords
 210   '(("^\\([0-9a-f]+:\\).\\{40\\}  \\(.+$\\)"
 211      ;; "^\\([0-9a-f]+:\\).+  \\(.+$\\)"
 212      (1 'hexl-address-region t t)
 213      (2 'hexl-ascii-region t t)))
 214   "Font lock keywords used in `hexl-mode'.")
 215
 216 ;; routines
 217
 218 (put 'hexl-mode 'mode-class 'special)
 219
 220
 221 (defun hexl-mode--minor-mode-p (var)
 222   (memq var '(ruler-mode hl-line-mode)))
 223
 224 (defun hexl-mode--setq-local (var val)
 225   ;; `var' can be either a symbol or a pair, in which case the `car'
 226   ;; is the getter function and the `cdr' is the corresponding setter.
 227   (unless (or (member var hexl-mode--old-var-vals)
 228               (assoc var hexl-mode--old-var-vals))
 229     (push (if (or (consp var) (boundp var))
 230               (cons var
 231                     (if (consp var) (funcall (car var)) (symbol-value var)))
 232             var)
 233           hexl-mode--old-var-vals))
 234   (cond
 235    ((consp var) (funcall (cdr var) val))
 236    ((hexl-mode--minor-mode-p var) (funcall var (if val 1 -1)))
 237    (t (set (make-local-variable var) val))))
 238
 239 ;;;###autoload
 240 (defun hexl-mode (&optional arg)
 241   "\\<hexl-mode-map>A mode for editing binary files in hex dump format.
 242 This is not an ordinary major mode; it alters some aspects
 243 of the current mode's behavior, but not all; also, you can exit
 244 Hexl mode and return to the previous mode using `hexl-mode-exit'.
 245
 246 This function automatically converts a buffer into the hexl format
 247 using the function `hexlify-buffer'.
 248
 249 Each line in the buffer has an \"address\" (displayed in hexadecimal)
 250 representing the offset into the file that the characters on this line
 251 are at and 16 characters from the file (displayed as hexadecimal
 252 values grouped every 16 bits) and as their ASCII values.
 253
 254 If any of the characters (displayed as ASCII characters) are
 255 unprintable (control or meta characters) they will be replaced as
 256 periods.
 257
 258 If `hexl-mode' is invoked with an argument the buffer is assumed to be
 259 in hexl format.
 260
 261 A sample format:
 262
 263   HEX ADDR: 0001 0203 0405 0607 0809 0a0b 0c0d 0e0f     ASCII-TEXT
 264   --------  ---- ---- ---- ---- ---- ---- ---- ----  ----------------
 265   00000000: 5468 6973 2069 7320 6865 786c 2d6d 6f64  This is hexl-mod
 266   00000010: 652e 2020 4561 6368 206c 696e 6520 7265  e.  Each line re
 267   00000020: 7072 6573 656e 7473 2031 3620 6279 7465  presents 16 byte
 268   00000030: 7320 6173 2068 6578 6164 6563 696d 616c  s as hexadecimal
 269   00000040: 2041 5343 4949 0a61 6e64 2070 7269 6e74   ASCII.and print
 270   00000050: 6162 6c65 2041 5343 4949 2063 6861 7261  able ASCII chara
 271   00000060: 6374 6572 732e 2020 416e 7920 636f 6e74  cters.  Any cont
 272   00000070: 726f 6c20 6f72 206e 6f6e 2d41 5343 4949  rol or non-ASCII
 273   00000080: 2063 6861 7261 6374 6572 730a 6172 6520   characters.are
 274   00000090: 6469 7370 6c61 7965 6420 6173 2070 6572  displayed as per
 275   000000a0: 696f 6473 2069 6e20 7468 6520 7072 696e  iods in the prin
 276   000000b0: 7461 626c 6520 6368 6172 6163 7465 7220  table character
 277   000000c0: 7265 6769 6f6e 2e0a                      region..
 278
 279 Movement is as simple as movement in a normal Emacs text buffer.  Most
 280 cursor movement bindings are the same (ie. Use \\[hexl-backward-char], \\[hexl-forward-char], \\[hexl-next-line], and \\[hexl-previous-line]
 281 to move the cursor left, right, down, and up).
 282
 283 Advanced cursor movement commands (ala \\[hexl-beginning-of-line], \\[hexl-end-of-line], \\[hexl-beginning-of-buffer], and \\[hexl-end-of-buffer]) are
 284 also supported.
 285
 286 There are several ways to change text in hexl mode:
 287
 288 ASCII characters (character between space (0x20) and tilde (0x7E)) are
 289 bound to self-insert so you can simply type the character and it will
 290 insert itself (actually overstrike) into the buffer.
 291
 292 \\[hexl-quoted-insert] followed by another keystroke allows you to insert the key even if
 293 it isn't bound to self-insert.  An octal number can be supplied in place
 294 of another key to insert the octal number's ASCII representation.
 295
 296 \\[hexl-insert-hex-char] will insert a given hexadecimal value (if it is between 0 and 0xFF)
 297 into the buffer at the current point.
 298
 299 \\[hexl-insert-octal-char] will insert a given octal value (if it is between 0 and 0377)
 300 into the buffer at the current point.
 301
 302 \\[hexl-insert-decimal-char] will insert a given decimal value (if it is between 0 and 255)
 303 into the buffer at the current point.
 304
 305 \\[hexl-mode-exit] will exit hexl-mode.
 306
 307 Note: saving the file with any of the usual Emacs commands
 308 will actually convert it back to binary format while saving.
 309
 310 You can use \\[hexl-find-file] to visit a file in Hexl mode.
 311
 312 \\[describe-bindings] for advanced commands."
 313   (interactive "p")
 314   (unless (eq major-mode 'hexl-mode)
 315     (let ((modified (buffer-modified-p))
 316           (inhibit-read-only t)
 317           (original-point (- (point) (point-min))))
 318       (and (eobp) (not (bobp))
 319            (setq original-point (1- original-point)))
 320       ;; If `hexl-mode' is invoked with an argument the buffer is assumed to
 321       ;; be in hexl format.
 322       (when (memq arg '(1 nil))
 323         ;; If the buffer's EOL type is -dos, we need to account for
 324         ;; extra CR characters added when hexlify-buffer writes the
 325         ;; buffer to a file.
 326         ;; FIXME: This doesn't take into account multibyte coding systems.
 327         (when (eq (coding-system-eol-type buffer-file-coding-system) 1)
 328           (setq original-point (+ (count-lines (point-min) (point))
 329                                   original-point))
 330           (or (bolp) (setq original-point (1- original-point))))
 331         (hexlify-buffer)
 332         (restore-buffer-modified-p modified))
 333       (set (make-local-variable 'hexl-max-address)
 334            (let* ((full-lines (/ (buffer-size) 68))
 335                   (last-line (% (buffer-size) 68))
 336                   (last-line-bytes (% last-line 52)))
 337              (+ last-line-bytes (* full-lines 16) -1)))
 338       (condition-case nil
 339           (hexl-goto-address original-point)
 340         (error nil)))
 341
 342     ;; We do not turn off the old major mode; instead we just
 343     ;; override most of it.  That way, we can restore it perfectly.
 344
 345     (hexl-mode--setq-local '(current-local-map . use-local-map) hexl-mode-map)
 346
 347     (hexl-mode--setq-local 'mode-name "Hexl")
 348     (hexl-mode--setq-local 'isearch-search-fun-function
 349                            'hexl-isearch-search-function)
 350     (hexl-mode--setq-local 'major-mode 'hexl-mode)
 351
 352     (hexl-mode--setq-local '(syntax-table . set-syntax-table)
 353                            (standard-syntax-table))
 354
 355     (add-hook 'write-contents-functions 'hexl-save-buffer nil t)
 356
 357     (hexl-mode--setq-local 'require-final-newline nil)
 358
 359
 360     (hexl-mode--setq-local 'font-lock-defaults '(hexl-font-lock-keywords t))
 361
 362     (hexl-mode--setq-local 'revert-buffer-function
 363                            #'hexl-revert-buffer-function)
 364     (add-hook 'change-major-mode-hook 'hexl-maybe-dehexlify-buffer nil t)
 365
 366     ;; Set a callback function for eldoc.
 367     (hexl-mode--setq-local 'eldoc-documentation-function
 368                            #'hexl-print-current-point-info)
 369     (eldoc-add-command-completions "hexl-")
 370     (eldoc-remove-command "hexl-save-buffer"
 371                           "hexl-current-address")
 372
 373     (if hexl-follow-ascii (hexl-follow-ascii 1)))
 374   (run-mode-hooks 'hexl-mode-hook))
 375
 376
 377 (defun hexl-isearch-search-function ()
 378   (if (and (not isearch-regexp) (not isearch-word))
 379       (lambda (string &optional bound noerror count)
 380         (funcall
 381          (if isearch-forward 're-search-forward 're-search-backward)
 382          (let ((textre
 383                 (if (> (length string) 80)
 384                     (regexp-quote string)
 385                   (mapconcat (lambda (c) (regexp-quote (string c))) string
 386                              "\\(?:\n\\(?:[:a-f0-9]+ \\)+ \\)?"))))
 387            (if (string-match "\\` ?\\([a-f0-9]+ \\)*[a-f0-9]+ ?\\'" string)
 388                (concat textre "\\|"
 389                        (mapconcat 'regexp-quote (split-string string " ")
 390                                   " \\(?: .+\n[a-f0-9]+: \\)?"))
 391              textre))
 392          bound noerror count))
 393     (let ((isearch-search-fun-function nil))
 394       (isearch-search-fun))))
 395
 396 (defvar hexl-in-save-buffer nil)
 397
 398 (defun hexl-save-buffer ()
 399   "Save a hexl format buffer as binary in visited file if modified."
 400   (interactive)
 401   (if hexl-in-save-buffer nil
 402     (restore-buffer-modified-p
 403      (if (buffer-modified-p)
 404          (let ((buf (generate-new-buffer " hexl"))
 405                (name (buffer-name))
 406                (start (point-min))
 407                (end (point-max))
 408                modified)
 409            (with-current-buffer buf
 410              (insert-buffer-substring name start end)
 411              (set-buffer name)
 412              (dehexlify-buffer)
 413              ;; Prevent infinite recursion.
 414              (let ((hexl-in-save-buffer t))
 415                (save-buffer))
 416              (setq modified (buffer-modified-p))
 417              (delete-region (point-min) (point-max))
 418              (insert-buffer-substring buf start end)
 419              (kill-buffer buf)
 420              modified))
 421        (message "(No changes need to be saved)")
 422        nil))
 423     ;; Return t to indicate we have saved t
 424     t))
 425
 426 ;;;###autoload
 427 (defun hexl-find-file (filename)
 428   "Edit file FILENAME as a binary file in hex dump format.
 429 Switch to a buffer visiting file FILENAME, creating one if none exists,
 430 and edit the file in `hexl-mode'."
 431   (interactive
 432    (list
 433     (let ((completion-ignored-extensions nil))
 434       (read-file-name "Filename: " nil nil 'ret-must-match))))
 435   ;; Ignore the user's setting of default major-mode.
 436   (letf (((default-value 'major-mode) 'fundamental-mode))
 437     (find-file-literally filename))
 438   (if (not (eq major-mode 'hexl-mode))
 439       (hexl-mode)))
 440
 441 (defun hexl-revert-buffer-function (ignore-auto noconfirm)
 442   (let ((coding-system-for-read 'no-conversion)
 443         revert-buffer-function)
 444     ;; Call the original `revert-buffer' without code conversion; also
 445     ;; prevent it from changing the major mode to normal-mode, which
 446     ;; calls `set-auto-mode'.
 447     (revert-buffer nil nil t)
 448     ;; A couple of hacks are necessary here:
 449     ;; 1. change the major-mode to one other than hexl-mode since the
 450     ;; function `hexl-mode' does nothing if the current major-mode is
 451     ;; already hexl-mode.
 452     ;; 2. reset change-major-mode-hook in case that `hexl-mode'
 453     ;; previously added hexl-maybe-dehexlify-buffer to it.
 454     (remove-hook 'change-major-mode-hook 'hexl-maybe-dehexlify-buffer t)
 455     (setq major-mode 'fundamental-mode)
 456     (hexl-mode)))
 457
 458 (defun hexl-mode-exit (&optional arg)
 459   "Exit Hexl mode, returning to previous mode.
 460 With arg, don't unhexlify buffer."
 461   (interactive "p")
 462   (if (or (eq arg 1) (not arg))
 463       (let ((modified (buffer-modified-p))
 464             (inhibit-read-only t)
 465             (original-point (1+ (hexl-current-address))))
 466         (dehexlify-buffer)
 467         (remove-hook 'write-contents-functions 'hexl-save-buffer t)
 468         (restore-buffer-modified-p modified)
 469         (goto-char original-point)
 470         ;; Maybe adjust point for the removed CR characters.
 471         (when (eq (coding-system-eol-type buffer-file-coding-system) 1)
 472           (setq original-point (- original-point
 473                                   (count-lines (point-min) (point))))
 474           (or (bobp) (setq original-point (1+ original-point))))
 475         (goto-char original-point)))
 476
 477   (remove-hook 'change-major-mode-hook 'hexl-maybe-dehexlify-buffer t)
 478   (remove-hook 'post-command-hook 'hexl-follow-ascii-find t)
 479   (setq hexl-ascii-overlay nil)
 480
 481   (let ((mms ()))
 482     (dolist (varval hexl-mode--old-var-vals)
 483       (let* ((bound (consp varval))
 484              (var (if bound (car varval) varval))
 485              (val (cdr-safe varval)))
 486         (cond
 487          ((consp var) (funcall (cdr var) val))
 488          ((hexl-mode--minor-mode-p var) (push (cons var val) mms))
 489          (bound (set (make-local-variable var) val))
 490          (t (kill-local-variable var)))))
 491     (kill-local-variable 'hexl-mode--old-var-vals)
 492     ;; Enable/disable minor modes.  Do it after having reset the other vars,
 493     ;; since some of them may affect the minor modes.
 494     (dolist (mm mms)
 495       (funcall (car mm) (if (cdr mm) 1 -1))))
 496
 497   (force-mode-line-update))
 498
 499 (defun hexl-maybe-dehexlify-buffer ()
 500   "Convert a hexl format buffer to binary.
 501 Ask the user for confirmation."
 502   (if (y-or-n-p "Convert contents back to binary format? ")
 503       (let ((modified (buffer-modified-p))
 504             (inhibit-read-only t)
 505             (original-point (1+ (hexl-current-address))))
 506         (dehexlify-buffer)
 507         (remove-hook 'write-contents-functions 'hexl-save-buffer t)
 508         (restore-buffer-modified-p modified)
 509         (goto-char original-point))))
 510
 511 (defun hexl-current-address (&optional validate)
 512   "Return current hexl-address."
 513   (interactive)
 514   (let ((current-column (- (% (- (point) (point-min) -1) 68) 11))
 515         (hexl-address 0))
 516     (if (< current-column 0)
 517         (if validate
 518             (error "Point is not on a character in the file")
 519           (setq current-column 0)))
 520     (setq hexl-address
 521           (+ (* (/ (- (point) (point-min) -1) 68) 16)
 522              (if (>= current-column 41)
 523                  (- current-column 41)
 524                (/ (- current-column  (/ current-column 5)) 2))))
 525     (when (called-interactively-p 'interactive)
 526       (message "Current address is %d/0x%08x" hexl-address hexl-address))
 527     hexl-address))
 528
 529 (defun hexl-print-current-point-info ()
 530   "Return current hexl-address in string.
 531 This function is intended to be used as eldoc callback."
 532   (let ((addr (hexl-current-address)))
 533     (format "Current address is %d/0x%08x" addr addr)))
 534
 535 (defun hexl-address-to-marker (address)
 536   "Return buffer position for ADDRESS."
 537   (interactive "nAddress: ")
 538   (+ (* (/ address 16) 68) 10 (point-min) (/ (* (% address 16) 5) 2)))
 539
 540 (defun hexl-goto-address (address)
 541   "Go to hexl-mode (decimal) address ADDRESS.
 542 Signal error if ADDRESS is out of range."
 543   (interactive "nAddress: ")
 544   (if (or (< address 0) (> address hexl-max-address))
 545       (error "Out of hexl region"))
 546   (goto-char (hexl-address-to-marker address)))
 547
 548 (defun hexl-goto-hex-address (hex-address)
 549   "Go to hexl-mode address (hex string) HEX-ADDRESS.
 550 Signal error if HEX-ADDRESS is out of range."
 551   (interactive "sHex Address: ")
 552   (hexl-goto-address (hexl-hex-string-to-integer hex-address)))
 553
 554 (defun hexl-hex-string-to-integer (hex-string)
 555   "Return decimal integer for HEX-STRING."
 556   (interactive "sHex number: ")
 557   (let ((hex-num 0))
 558     (while (not (equal hex-string ""))
 559       (setq hex-num (+ (* hex-num 16)
 560                        (hexl-hex-char-to-integer (string-to-char hex-string))))
 561       (setq hex-string (substring hex-string 1)))
 562     hex-num))
 563
 564 (defun hexl-octal-string-to-integer (octal-string)
 565   "Return decimal integer for OCTAL-STRING."
 566   (interactive "sOctal number: ")
 567   (let ((oct-num 0))
 568     (while (not (equal octal-string ""))
 569       (setq oct-num (+ (* oct-num 8)
 570                        (hexl-oct-char-to-integer
 571                         (string-to-char octal-string))))
 572       (setq octal-string (substring octal-string 1)))
 573     oct-num))
 574
 575 ;; move point functions
 576
 577 (defun hexl-backward-char (arg)
 578   "Move to left ARG bytes (right if ARG negative) in hexl-mode."
 579   (interactive "p")
 580   (hexl-goto-address (- (hexl-current-address) arg)))
 581
 582 (defun hexl-forward-char (arg)
 583   "Move to right ARG bytes (left if ARG negative) in hexl-mode."
 584   (interactive "p")
 585   (hexl-goto-address (+ (hexl-current-address) arg)))
 586
 587 (defun hexl-backward-short (arg)
 588   "Move to left ARG shorts (right if ARG negative) in hexl-mode."
 589   (interactive "p")
 590   (hexl-goto-address (let ((address (hexl-current-address)))
 591                        (if (< arg 0)
 592                            (progn
 593                              (setq arg (- arg))
 594                              (while (> arg 0)
 595                                (setq address
 596                                      (if (> address hexl-max-address)
 597                                          (progn
 598                                            (message "End of buffer.")
 599                                            hexl-max-address)
 600                                        (if (equal address (logior address 3))
 601                                            (+ address 4)
 602                                          (logior address 3))))
 603                                (setq arg (1- arg)))
 604                              (setq address
 605                                    (if (> address hexl-max-address)
 606                                        (progn
 607                                          (message "End of buffer.")
 608                                          hexl-max-address)
 609                                      (logior address 3))))
 610                          (while (> arg 0)
 611                            (if (not (equal address (logand address -4)))
 612                                (setq address (logand address -4))
 613                              (if (not (equal address 0))
 614                                  (setq address (- address 4))
 615                                (message "Beginning of buffer.")))
 616                            (setq arg (1- arg))))
 617                        address)))
 618
 619 (defun hexl-forward-short (arg)
 620   "Move to right ARG shorts (left if ARG negative) in hexl-mode."
 621   (interactive "p")
 622   (hexl-backward-short (- arg)))
 623
 624 (defun hexl-backward-word (arg)
 625   "Move to left ARG words (right if ARG negative) in hexl-mode."
 626   (interactive "p")
 627   (hexl-goto-address (let ((address (hexl-current-address)))
 628                        (if (< arg 0)
 629                            (progn
 630                              (setq arg (- arg))
 631                              (while (> arg 0)
 632                                (setq address
 633                                      (if (> address hexl-max-address)
 634                                          (progn
 635                                            (message "End of buffer.")
 636                                            hexl-max-address)
 637                                        (if (equal address (logior address 7))
 638                                            (+ address 8)
 639                                          (logior address 7))))
 640                                (setq arg (1- arg)))
 641                              (setq address
 642                                    (if (> address hexl-max-address)
 643                                        (progn
 644                                          (message "End of buffer.")
 645                                          hexl-max-address)
 646                                      (logior address 7))))
 647                          (while (> arg 0)
 648                            (if (not (equal address (logand address -8)))
 649                                (setq address (logand address -8))
 650                              (if (not (equal address 0))
 651                                  (setq address (- address 8))
 652                                (message "Beginning of buffer.")))
 653                            (setq arg (1- arg))))
 654                        address)))
 655
 656 (defun hexl-forward-word (arg)
 657   "Move to right ARG words (left if ARG negative) in hexl-mode."
 658   (interactive "p")
 659   (hexl-backward-word (- arg)))
 660
 661 (defun hexl-previous-line (arg)
 662   "Move vertically up ARG lines [16 bytes] (down if ARG negative) in hexl-mode.
 663 If there is no byte at the target address move to the last byte in that line."
 664   (interactive "p")
 665   (hexl-next-line (- arg)))
 666
 667 (defun hexl-next-line (arg)
 668   "Move vertically down ARG lines [16 bytes] (up if ARG negative) in hexl-mode.
 669 If there is no byte at the target address move to the last byte in that line."
 670   (interactive "p")
 671   (hexl-goto-address (let ((address (+ (hexl-current-address) (* arg 16))))
 672                        (if (and (< arg 0) (< address 0))
 673                                 (progn (message "Out of hexl region.")
 674                                        (setq address
 675                                              (% (hexl-current-address) 16)))
 676                          (if (and (> address hexl-max-address)
 677                                   (< (% hexl-max-address 16) (% address 16)))
 678                              (setq address hexl-max-address)
 679                            (if (> address hexl-max-address)
 680                                (progn (message "Out of hexl region.")
 681                                       (setq
 682                                        address
 683                                        (+ (logand hexl-max-address -16)
 684                                           (% (hexl-current-address) 16)))))))
 685                        address)))
 686
 687 (defun hexl-beginning-of-buffer (arg)
 688   "Move to the beginning of the hexl buffer.
 689 Leaves `hexl-mark' at previous position.
 690 With prefix arg N, puts point N bytes of the way from the true beginning."
 691   (interactive "p")
 692   (push-mark (point))
 693   (hexl-goto-address (+ 0 (1- arg))))
 694
 695 (defun hexl-end-of-buffer (arg)
 696   "Go to `hexl-max-address' minus ARG."
 697   (interactive "p")
 698   (push-mark (point))
 699   (hexl-goto-address (- hexl-max-address (1- arg))))
 700
 701 (defun hexl-beginning-of-line ()
 702   "Goto beginning of line in hexl mode."
 703   (interactive)
 704   (goto-char (+ (* (/ (point) 68) 68) 11)))
 705
 706 (defun hexl-end-of-line ()
 707   "Goto end of line in hexl mode."
 708   (interactive)
 709   (hexl-goto-address (let ((address (logior (hexl-current-address) 15)))
 710                        (if (> address hexl-max-address)
 711                            (setq address hexl-max-address))
 712                        address)))
 713
 714 (defun hexl-scroll-down (arg)
 715   "Scroll hexl buffer window upward ARG lines; or near full window if no ARG."
 716   (interactive "P")
 717   (setq arg (if (null arg)
 718                 (1- (window-height))
 719               (prefix-numeric-value arg)))
 720   (hexl-scroll-up (- arg)))
 721
 722 (defun hexl-scroll-up (arg)
 723   "Scroll hexl buffer window upward ARG lines; or near full window if no ARG.
 724 If there's no byte at the target address, move to the first or last line."
 725   (interactive "P")
 726   (setq arg (if (null arg)
 727                 (1- (window-height))
 728               (prefix-numeric-value arg)))
 729   (let* ((movement (* arg 16))
 730          (address (hexl-current-address))
 731          (dest (+ address movement)))
 732     (cond
 733      ;; If possible, try to stay at the same offset from the beginning
 734      ;; of the 16-byte group, even if we move to the first or last
 735      ;; group.
 736      ((and (> dest hexl-max-address)
 737            (>= (% hexl-max-address 16) (% address 16)))
 738       (setq dest (+ (logand hexl-max-address -16) (% address 16))))
 739      ((> dest hexl-max-address)
 740       (setq dest hexl-max-address))
 741      ((< dest 0)
 742       (setq dest (% address 16))))
 743     (if (/= dest (+ address movement))
 744         (message "Out of hexl region."))
 745     (hexl-goto-address dest)
 746     (recenter 0)))
 747
 748 (defun hexl-beginning-of-1k-page ()
 749   "Go to beginning of 1KB boundary."
 750   (interactive)
 751   (hexl-goto-address (logand (hexl-current-address) -1024)))
 752
 753 (defun hexl-end-of-1k-page ()
 754   "Go to end of 1KB boundary."
 755   (interactive)
 756   (hexl-goto-address
 757    (max hexl-max-address (logior (hexl-current-address) 1023))))
 758
 759 (defun hexl-beginning-of-512b-page ()
 760   "Go to beginning of 512 byte boundary."
 761   (interactive)
 762   (hexl-goto-address (logand (hexl-current-address) -512)))
 763
 764 (defun hexl-end-of-512b-page ()
 765   "Go to end of 512 byte boundary."
 766   (interactive)
 767   (hexl-goto-address
 768    (max hexl-max-address (logior (hexl-current-address) 511))))
 769
 770 (defun hexl-quoted-insert (arg)
 771   "Read next input character and insert it.
 772 Useful for inserting control characters and non-ASCII characters given their
 773 numerical code.
 774 You may also type octal digits, to insert a character with that code."
 775   (interactive "p")
 776   (hexl-insert-multibyte-char (read-quoted-char) arg))
 777
 778 ;00000000: 0011 2233 4455 6677 8899 aabb ccdd eeff  0123456789ABCDEF
 779
 780 ;;;###autoload
 781 (defun hexlify-buffer ()
 782   "Convert a binary buffer to hexl format.
 783 This discards the buffer's undo information."
 784   (interactive)
 785   (and (consp buffer-undo-list)
 786        (or (y-or-n-p "Converting to hexl format discards undo info; ok? ")
 787            (error "Aborted"))
 788        (setq buffer-undo-list nil))
 789   ;; Don't decode text in the ASCII part of `hexl' program output.
 790   (let ((coding-system-for-read 'raw-text)
 791         (coding-system-for-write buffer-file-coding-system)
 792         (buffer-undo-list t))
 793     (apply 'call-process-region (point-min) (point-max)
 794            (expand-file-name hexl-program exec-directory)
 795            t t nil
 796            ;; Manually encode the args, otherwise they're encoded using
 797            ;; coding-system-for-write (i.e. buffer-file-coding-system) which
 798            ;; may not be what we want (e.g. utf-16 on a non-utf-16 system).
 799            (mapcar (lambda (s)
 800                      (if (not (multibyte-string-p s)) s
 801                        (encode-coding-string s locale-coding-system)))
 802                    (split-string hexl-options)))
 803     (if (> (point) (hexl-address-to-marker hexl-max-address))
 804         (hexl-goto-address hexl-max-address))))
 805
 806 (defun dehexlify-buffer ()
 807   "Convert a hexl format buffer to binary.
 808 This discards the buffer's undo information."
 809   (interactive)
 810   (and (consp buffer-undo-list)
 811        (or (y-or-n-p "Converting from hexl format discards undo info; ok? ")
 812            (error "Aborted"))
 813        (setq buffer-undo-list nil))
 814   (let ((coding-system-for-write 'raw-text)
 815         (coding-system-for-read buffer-file-coding-system)
 816         (buffer-undo-list t))
 817     (apply 'call-process-region (point-min) (point-max)
 818            (expand-file-name hexl-program exec-directory)
 819            t t nil "-de" (split-string hexl-options))))
 820
 821 (defun hexl-char-after-point ()
 822   "Return char for ASCII hex digits at point."
 823   (hexl-htoi (char-after (point))
 824              (char-after (1+ (point)))))
 825
 826 (defun hexl-htoi (lh rh)
 827   "Hex (char) LH (char) RH to integer."
 828     (+ (* (hexl-hex-char-to-integer lh) 16)
 829        (hexl-hex-char-to-integer rh)))
 830
 831 (defun hexl-hex-char-to-integer (character)
 832   "Take a char and return its value as if it was a hex digit."
 833   (if (and (>= character ?0) (<= character ?9))
 834       (- character ?0)
 835     (let ((ch (logior character 32)))
 836       (if (and (>= ch ?a) (<= ch ?f))
 837           (- ch (- ?a 10))
 838         (error "Invalid hex digit `%c'" ch)))))
 839
 840 (defun hexl-oct-char-to-integer (character)
 841   "Take a char and return its value as if it was a octal digit."
 842   (if (and (>= character ?0) (<= character ?7))
 843       (- character ?0)
 844     (error "Invalid octal digit `%c'" character)))
 845
 846 (defun hexl-printable-character (ch)
 847   "Return a displayable string for character CH."
 848   (format "%c" (if (equal hexl-iso "")
 849                    (if (or (< ch 32) (>= ch 127))
 850                        46
 851                      ch)
 852                  (if (or (< ch 32) (and (>= ch 127) (< ch 160)))
 853                      46
 854                    ch))))
 855
 856 (defun hexl-insert-multibyte-char (ch num)
 857   "Insert a possibly multibyte character CH NUM times.
 858
 859 Non-ASCII characters are first encoded with `buffer-file-coding-system',
 860 and their encoded form is inserted byte by byte."
 861   (let ((charset (char-charset ch))
 862         (coding (if (or (null buffer-file-coding-system)
 863                         ;; coding-system-type equals t means undecided.
 864                         (eq (coding-system-type buffer-file-coding-system) t))
 865                     (default-value 'buffer-file-coding-system)
 866                   buffer-file-coding-system)))
 867     (cond ((and (> ch 0) (< ch 256))
 868            (hexl-insert-char ch num))
 869           ((eq charset 'unknown)
 870            (error
 871             "0x%x -- invalid character code; use \\[hexl-insert-hex-string]"
 872             ch))
 873           (t
 874            (let ((encoded (encode-coding-char ch coding))
 875                  (internal (string-as-unibyte (char-to-string ch)))
 876                  internal-hex)
 877              ;; If encode-coding-char returns nil, it means our character
 878              ;; cannot be safely encoded with buffer-file-coding-system.
 879              ;; In that case, we offer to insert the internal representation
 880              ;; of that character, byte by byte.
 881              (when (null encoded)
 882                (setq internal-hex
 883                      (mapconcat (function (lambda (c) (format "%x" c)))
 884                                 internal " "))
 885                (if (yes-or-no-p
 886                     (format
 887                      "Insert char 0x%x's internal representation \"%s\"? "
 888                      ch internal-hex))
 889                    (setq encoded internal)
 890                  (error
 891                   "Can't encode `0x%x' with this buffer's coding system; try \\[hexl-insert-hex-string]"
 892                   ch)))
 893              (while (> num 0)
 894                (mapc
 895                 (function (lambda (c) (hexl-insert-char c 1))) encoded)
 896                (setq num (1- num))))))))
 897
 898 (defun hexl-self-insert-command (arg)
 899   "Insert this character.
 900 Interactively, with a numeric argument, insert this character that many times.
 901
 902 Non-ASCII characters are first encoded with `buffer-file-coding-system',
 903 and their encoded form is inserted byte by byte."
 904   (interactive "p")
 905   (hexl-insert-multibyte-char last-command-event arg))
 906
 907 (defun hexl-insert-char (ch num)
 908   "Insert the character CH NUM times in a hexl buffer.
 909
 910 CH must be a unibyte character whose value is between 0 and 255."
 911   (if (or (< ch 0) (> ch 255))
 912       (error "Invalid character 0x%x -- must be in the range [0..255]" ch))
 913   (let ((address (hexl-current-address t)))
 914     (while (> num 0)
 915       (let ((hex-position
 916              (+ (* (/ address 16) 68)
 917                 10 (point-min)
 918                 (* 2 (% address 16))
 919                 (/ (% address 16) 2)))
 920             (ascii-position
 921              (+ (* (/ address 16) 68) 51 (point-min) (% address 16)))
 922             at-ascii-position)
 923         (if (= (point) ascii-position)
 924             (setq at-ascii-position t))
 925         (goto-char hex-position)
 926         (delete-char 2)
 927         (insert (format "%02x" ch))
 928         (goto-char ascii-position)
 929         (delete-char 1)
 930         (insert (hexl-printable-character ch))
 931         (or (eq address hexl-max-address)
 932             (setq address (1+ address)))
 933         (hexl-goto-address address)
 934         (if at-ascii-position
 935             (progn
 936               (beginning-of-line)
 937               (forward-char 51)
 938               (forward-char (% address 16)))))
 939       (setq num (1- num)))))
 940
 941 ;; hex conversion
 942
 943 (defun hexl-insert-hex-char (arg)
 944   "Insert a character given by its hexadecimal code ARG times at point."
 945   (interactive "p")
 946   (let ((num (hexl-hex-string-to-integer (read-string "Hex number: "))))
 947     (if (< num 0)
 948         (error "Hex number out of range")
 949       (hexl-insert-multibyte-char num arg))))
 950
 951 (defun hexl-insert-hex-string (str arg)
 952   "Insert hexadecimal string STR at point ARG times.
 953 Embedded whitespace, dashes, and periods in the string are ignored."
 954   (interactive "sHex string: \np")
 955   (setq str (replace-regexp-in-string "[- \t.]" "" str))
 956   (let ((chars '()))
 957     (let ((len (length str))
 958           (idx 0))
 959       (if (eq (logand len 1) 1)
 960           (let ((num (hexl-hex-string-to-integer (substring str 0 1))))
 961             (setq chars (cons num chars))
 962             (setq idx 1)))
 963       (while (< idx len)
 964         (let* ((nidx (+ idx 2))
 965                (num (hexl-hex-string-to-integer (substring str idx nidx))))
 966           (setq chars (cons num chars))
 967           (setq idx nidx))))
 968     (setq chars (nreverse chars))
 969     (while (> arg 0)
 970       (let ((chars chars))
 971         (while chars
 972           (hexl-insert-char (car chars) 1)
 973           (setq chars (cdr chars))))
 974       (setq arg (- arg 1)))))
 975
 976 (defun hexl-insert-decimal-char (arg)
 977   "Insert a character given by its decimal code ARG times at point."
 978   (interactive "p")
 979   (let ((num (string-to-number (read-string "Decimal Number: "))))
 980     (if (< num 0)
 981         (error "Decimal number out of range")
 982       (hexl-insert-multibyte-char num arg))))
 983
 984 (defun hexl-insert-octal-char (arg)
 985   "Insert a character given by its octal code ARG times at point."
 986   (interactive "p")
 987   (let ((num (hexl-octal-string-to-integer (read-string "Octal Number: "))))
 988     (if (< num 0)
 989         (error "Decimal number out of range")
 990       (hexl-insert-multibyte-char num arg))))
 991
 992 (defun hexl-follow-ascii (&optional arg)
 993   "Toggle following ASCII in Hexl buffers.
 994 With prefix ARG, turn on following if and only if ARG is positive.
 995 When following is enabled, the ASCII character corresponding to the
 996 element under the point is highlighted.
 997 Customize the variable `hexl-follow-ascii' to disable this feature."
 998   (interactive "P")
 999   (let ((on-p (if arg
1000                   (> (prefix-numeric-value arg) 0)
1001                (not hexl-ascii-overlay))))
1002
1003     (if on-p
1004       ;; turn it on
1005       (if (not hexl-ascii-overlay)
1006           (progn
1007             (setq hexl-ascii-overlay (make-overlay 1 1)
1008                   hexl-follow-ascii t)
1009             (overlay-put hexl-ascii-overlay 'face 'highlight)
1010             (add-hook 'post-command-hook 'hexl-follow-ascii-find nil t)))
1011       ;; turn it off
1012       (if hexl-ascii-overlay
1013           (progn
1014             (delete-overlay hexl-ascii-overlay)
1015             (setq hexl-ascii-overlay nil
1016                   hexl-follow-ascii nil)
1017             (remove-hook 'post-command-hook 'hexl-follow-ascii-find t)
1018             )))))
1019
1020 (defun hexl-activate-ruler ()
1021   "Activate `ruler-mode'."
1022   (require 'ruler-mode)
1023   (hexl-mode--setq-local 'ruler-mode-ruler-function
1024                          #'hexl-mode-ruler)
1025   (hexl-mode--setq-local 'ruler-mode t))
1026
1027 (defun hexl-follow-line ()
1028   "Activate `hl-line-mode'."
1029   (require 'hl-line)
1030   (hexl-mode--setq-local 'hl-line-range-function
1031                          #'hexl-highlight-line-range)
1032   (hexl-mode--setq-local 'hl-line-face 'highlight)
1033   (hexl-mode--setq-local 'hl-line-mode t))
1034
1035 (defun hexl-highlight-line-range ()
1036   "Return the range of address region for the point.
1037 This function is assumed to be used as callback function for `hl-line-mode'."
1038   (cons
1039    (line-beginning-position)
1040    ;; 9 stands for (length "87654321:")
1041    (+ (line-beginning-position) 9)))
1042
1043 (defun hexl-follow-ascii-find ()
1044   "Find and highlight the ASCII element corresponding to current point."
1045   (let ((pos (+ 51
1046                 (- (point) (current-column))
1047                 (mod (hexl-current-address) 16))))
1048     (move-overlay hexl-ascii-overlay pos (1+ pos))
1049     ))
1050
1051 (defun hexl-mode-ruler ()
1052   "Return a string ruler for hexl mode."
1053   (let* ((highlight (mod (hexl-current-address) 16))
1054          (s " 87654321  0011 2233 4455 6677 8899 aabb ccdd eeff  0123456789abcdef")
1055          (pos 0))
1056     (set-text-properties 0 (length s) nil s)
1057     ;; Turn spaces in the header into stretch specs so they work
1058     ;; regardless of the header-line face.
1059     (while (string-match "[ \t]+" s pos)
1060       (setq pos (match-end 0))
1061       (put-text-property (match-beginning 0) pos 'display
1062                          ;; Assume fixed-size chars
1063                          `(space :align-to ,(1- pos))
1064                          s))
1065     ;; Highlight the current column.
1066     (put-text-property (+ 11 (/ (* 5 highlight) 2))
1067                        (+ 13 (/ (* 5 highlight) 2))
1068                        'face 'highlight s)
1069     ;; Highlight the current ascii column
1070     (put-text-property (+ 13 39 highlight) (+ 13 40 highlight)
1071                        'face 'highlight s)
1072     s))
1073
1074 ;; startup stuff.
1075
1076 (easy-menu-define hexl-menu hexl-mode-map "Hexl Mode menu"
1077   `("Hexl"
1078     :help "Hexl-specific Features"
1079
1080     ["Backward short" hexl-backward-short
1081      :help "Move to left a short"]
1082     ["Forward short" hexl-forward-short
1083      :help "Move to right a short"]
1084     ["Backward word" hexl-backward-short
1085      :help "Move to left a word"]
1086     ["Forward word" hexl-forward-short
1087      :help "Move to right a word"]
1088     "-"
1089     ["Beginning of 512b page" hexl-beginning-of-512b-page
1090      :help "Go to beginning of 512 byte boundary"]
1091     ["End of 512b page" hexl-end-of-512b-page
1092      :help "Go to end of 512 byte boundary"]
1093     ["Beginning of 1K page" hexl-beginning-of-1k-page
1094      :help "Go to beginning of 1KB boundary"]
1095     ["End of 1K page" hexl-end-of-1k-page
1096      :help "Go to end of 1KB boundary"]
1097     "-"
1098     ["Go to address" hexl-goto-address
1099      :help "Go to hexl-mode (decimal) address"]
1100     ["Go to address" hexl-goto-hex-address
1101      :help "Go to hexl-mode (hex string) address"]
1102     "-"
1103     ["Insert decimal char" hexl-insert-decimal-char
1104      :help "Insert a character given by its decimal code"]
1105     ["Insert hex char" hexl-insert-hex-char
1106      :help "Insert a character given by its hexadecimal code"]
1107     ["Insert octal char" hexl-insert-octal-char
1108      :help "Insert a character given by its octal code"]
1109     "-"
1110     ["Exit hexl mode" hexl-mode-exit
1111      :help "Exit hexl mode returning to previous mode"]))
1112
1113 (provide 'hexl)
1114
1115 ;;; hexl.el ends here