code.delx.au - gnu-emacs/blob - lisp/calc/calc-embed.el

   1 ;; Calculator for GNU Emacs, part II [calc-embed.el]
   2 ;; Copyright (C) 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
   3 ;; Written by Dave Gillespie, daveg@synaptics.com.
   4
   5 ;; This file is part of GNU Emacs.
   6
   7 ;; GNU Emacs is distributed in the hope that it will be useful,
   8 ;; but WITHOUT ANY WARRANTY.  No author or distributor
   9 ;; accepts responsibility to anyone for the consequences of using it
  10 ;; or for whether it serves any particular purpose or works at all,
  11 ;; unless he says so in writing.  Refer to the GNU Emacs General Public
  12 ;; License for full details.
  13
  14 ;; Everyone is granted permission to copy, modify and redistribute
  15 ;; GNU Emacs, but only under the conditions described in the
  16 ;; GNU Emacs General Public License.   A copy of this license is
  17 ;; supposed to have been given to you along with GNU Emacs so you
  18 ;; can know your rights and responsibilities.  It should be in a
  19 ;; file named COPYING.  Among other things, the copyright notice
  20 ;; and this notice must be preserved on all copies.
  21
  22
  23
  24 ;; This file is autoloaded from calc-ext.el.
  25 (require 'calc-ext)
  26
  27 (require 'calc-macs)
  28
  29 (defun calc-Need-calc-embed () nil)
  30
  31
  32 (defun calc-show-plain (n)
  33   (interactive "P")
  34   (calc-wrapper
  35    (calc-set-command-flag 'renum-stack)
  36    (message (if (calc-change-mode 'calc-show-plain n nil t)
  37                 "Including \"plain\" formulas in Calc Embedded mode."
  38               "Omitting \"plain\" formulas in Calc Embedded mode.")))
  39 )
  40
  41
  42
  43
  44 ;;; Things to do for Embedded Mode:
  45 ;;;
  46 ;;;  Detect and strip off unexpected labels during reading.
  47 ;;;
  48 ;;;  Get calc-grab-region to use math-read-big-expr.
  49 ;;;  If calc-show-plain, main body should have only righthand side of => expr.
  50 ;;;  Handle tabs that have crept into embedded formulas.
  51 ;;;  After "switching to new formula", home cursor to that formula.
  52 ;;;  Do something like \evalto ... \to for \gets operators.
  53 ;;;
  54
  55
  56 (defvar calc-embedded-modes nil)
  57 (defvar calc-embedded-globals nil)
  58 (defvar calc-embedded-active nil)
  59
  60 (make-variable-buffer-local 'calc-embedded-all-active)
  61 (make-variable-buffer-local 'calc-embedded-some-active)
  62
  63
  64 (defvar calc-embedded-open-formula "\\`\\|^\n\\|\\$\\$?\\|\\\\\\[\\|^\\\\begin.*\n\\|^@.*\n\\|^\\.EQ.*\n\\|\\\\(\\|^%\n\\|^\\.\\\\\"\n"
  65   "*A regular expression for the opening delimiter of a formula used by
  66 calc-embedded.")
  67
  68 (defvar calc-embedded-close-formula "\\'\\|\n$\\|\\$\\$?\\|\\\\]\\|^\\\\end.*\n\\|^@.*\n\\|^\\.EN.*\n\\|\\\\)\\|\n%\n\\|^\\.\\\\\"\n"
  69   "*A regular expression for the closing delimiter of a formula used by
  70 calc-embedded.")
  71
  72 (defvar calc-embedded-open-word "^\\|[^-+0-9.eE]"
  73   "*A regular expression for the opening delimiter of a formula used by
  74 calc-embedded-word.")
  75
  76 (defvar calc-embedded-close-word "$\\|[^-+0-9.eE]"
  77   "*A regular expression for the closing delimiter of a formula used by
  78 calc-embedded-word.")
  79
  80 (defvar calc-embedded-open-plain "%%% "
  81   "*A string which is the opening delimiter for a \"plain\" formula.
  82 If calc-show-plain mode is enabled, this is inserted at the front of
  83 each formula.")
  84
  85 (defvar calc-embedded-close-plain " %%%\n"
  86   "*A string which is the closing delimiter for a \"plain\" formula.
  87 See calc-embedded-open-plain.")
  88
  89 (defvar calc-embedded-open-new-formula "\n\n"
  90   "*A string which is inserted at front of formula by calc-embedded-new-formula.")
  91
  92 (defvar calc-embedded-close-new-formula "\n\n"
  93   "*A string which is inserted at end of formula by calc-embedded-new-formula.")
  94
  95 (defvar calc-embedded-announce-formula "%Embed\n\\(% .*\n\\)*"
  96   "*A regular expression which is sure to be followed by a calc-embedded formula." )
  97
  98 (defvar calc-embedded-open-mode "% "
  99   "*A string which should precede calc-embedded mode annotations.
 100 This is not required to be present for user-written mode annotations.")
 101
 102 (defvar calc-embedded-close-mode "\n"
 103   "*A string which should follow calc-embedded mode annotations.
 104 This is not required to be present for user-written mode annotations.")
 105
 106
 107 (defconst calc-embedded-mode-vars '(("precision" . calc-internal-prec)
 108                                     ("word-size" . calc-word-size)
 109                                     ("angles" . calc-angle-mode)
 110                                     ("symbolic" . calc-symbolic-mode)
 111                                     ("matrix" . calc-matrix-mode)
 112                                     ("fractions" . calc-prefer-frac)
 113                                     ("complex" . calc-complex-mode)
 114                                     ("simplify" . calc-simplify-mode)
 115                                     ("language" . the-language)
 116                                     ("plain" . calc-show-plain)
 117                                     ("break" . calc-line-breaking)
 118                                     ("justify" . the-display-just)
 119                                     ("left-label" . calc-left-label)
 120                                     ("right-label" . calc-right-label)
 121                                     ("radix" . calc-number-radix)
 122                                     ("leading-zeros" . calc-leading-zeros)
 123                                     ("grouping" . calc-group-digits)
 124                                     ("group-char" . calc-group-char)
 125                                     ("point-char" . calc-point-char)
 126                                     ("frac-format" . calc-frac-format)
 127                                     ("float-format" . calc-float-format)
 128                                     ("complex-format" . calc-complex-format)
 129                                     ("hms-format" . calc-hms-format)
 130                                     ("date-format" . calc-date-format)
 131                                     ("matrix-justify" . calc-matrix-just)
 132                                     ("full-vectors" . calc-full-vectors)
 133                                     ("break-vectors" . calc-break-vectors)
 134                                     ("vector-commas" . calc-vector-commas)
 135                                     ("vector-brackets" . calc-vector-brackets)
 136                                     ("matrix-brackets" . calc-matrix-brackets)
 137                                     ("strings" . calc-display-strings)
 138 ))
 139
 140
 141 ;;; Format of calc-embedded-info vector:
 142 ;;;    0   Editing buffer.
 143 ;;;    1   Calculator buffer.
 144 ;;;    2   Top of current formula (marker).
 145 ;;;    3   Bottom of current formula (marker).
 146 ;;;    4   Top of current formula's delimiters (marker).
 147 ;;;    5   Bottom of current formula's delimiters (marker).
 148 ;;;    6   String representation of current formula.
 149 ;;;    7   Non-nil if formula is embedded within a single line.
 150 ;;;    8   Internal representation of current formula.
 151 ;;;    9   Variable assigned by this formula, or nil.
 152 ;;;   10   List of variables upon which this formula depends.
 153 ;;;   11   Evaluated value of the formula, or nil.
 154 ;;;   12   Mode settings for current formula.
 155 ;;;   13   Local mode settings for current formula.
 156 ;;;   14   Permanent mode settings for current formula.
 157 ;;;   15   Global mode settings for editing buffer.
 158
 159
 160 ;;; calc-embedded-active is an a-list keyed on buffers; each cdr is a
 161 ;;; sorted list of calc-embedded-infos in that buffer.  We do this
 162 ;;; rather than using buffer-local variables because the latter are
 163 ;;; thrown away when a buffer changes major modes.
 164
 165
 166 (defun calc-do-embedded (arg end obeg oend)
 167   (if calc-embedded-info
 168
 169       ;; Turn embedded mode off or switch to a new buffer.
 170       (cond ((eq (current-buffer) (aref calc-embedded-info 1))
 171              (let ((calcbuf (current-buffer))
 172                    (buf (aref calc-embedded-info 0)))
 173                (calc-embedded-original-buffer t)
 174                (calc-embedded nil)
 175                (switch-to-buffer calcbuf)))
 176
 177             ((eq (current-buffer) (aref calc-embedded-info 0))
 178              (let* ((info calc-embedded-info)
 179                     (mode calc-embedded-modes))
 180                (save-excursion
 181                  (set-buffer (aref info 1))
 182                  (if (and (> (calc-stack-size) 0)
 183                           (equal (calc-top 1 'full) (aref info 8)))
 184                      (let ((calc-no-refresh-evaltos t))
 185                        (if (calc-top 1 'sel)
 186                            (calc-unselect 1))
 187                        (calc-embedded-set-modes
 188                         (aref info 15) (aref info 12) (aref info 14))
 189                        (let ((calc-embedded-info nil))
 190                          (calc-wrapper (calc-pop-stack))))
 191                    (calc-set-mode-line)))
 192                (setq calc-embedded-info nil
 193                      mode-line-buffer-identification (car mode)
 194                      truncate-lines (nth 2 mode)
 195                      buffer-read-only nil)
 196                (use-local-map (nth 1 mode))
 197                (set-buffer-modified-p (buffer-modified-p))
 198                (or calc-embedded-quiet
 199                    (message "Back to %s mode." mode-name))))
 200
 201             (t
 202              (if (buffer-name (aref calc-embedded-info 0))
 203                  (save-excursion
 204                    (set-buffer (aref calc-embedded-info 0))
 205                    (or (y-or-n-p "Cancel Calc Embedded mode in buffer %s? "
 206                                  (buffer-name))
 207                        (keyboard-quit))
 208                    (calc-embedded nil)))
 209              (calc-embedded arg end obeg oend)))
 210
 211     ;; Turn embedded mode on.
 212     (calc-plain-buffer-only)
 213     (let ((modes (list mode-line-buffer-identification
 214                        (current-local-map)
 215                        truncate-lines))
 216           top bot outer-top outer-bot
 217           info chg ident)
 218       (barf-if-buffer-read-only)
 219       (or calc-embedded-globals
 220           (calc-find-globals))
 221       (setq info (calc-embedded-make-info (point) nil t arg end obeg oend))
 222       (if (eq (car-safe (aref info 8)) 'error)
 223           (progn
 224             (goto-char (nth 1 (aref info 8)))
 225             (error (nth 2 (aref info 8)))))
 226       (let ((mode-line-buffer-identification mode-line-buffer-identification)
 227             (calc-embedded-info info)
 228             (calc-embedded-no-reselect t))
 229         (calc-wrapper
 230          (let* ((okay nil)
 231                 (calc-no-refresh-evaltos t))
 232            (setq chg (calc-embedded-set-modes
 233                       (aref info 15) (aref info 12) (aref info 13)))
 234            (if (aref info 8)
 235                (calc-push (calc-normalize (aref info 8)))
 236              (calc-alg-entry)))
 237          (setq calc-undo-list nil
 238                calc-redo-list nil
 239                ident mode-line-buffer-identification)))
 240       (setq calc-embedded-info info
 241             calc-embedded-modes modes
 242             mode-line-buffer-identification ident
 243             truncate-lines t
 244             buffer-read-only t)
 245       (set-buffer-modified-p (buffer-modified-p))
 246       (use-local-map calc-mode-map)
 247       (setq calc-no-refresh-evaltos nil)
 248       (and chg calc-any-evaltos (calc-wrapper (calc-refresh-evaltos)))
 249       (or (eq calc-embedded-quiet t)
 250           (message "Embedded Calc mode enabled.  %s to return to normal."
 251                    (if calc-embedded-quiet
 252                        "Type `M-# x'"
 253                      "Give this command again")))))
 254   (scroll-down 0)    ; fix a bug which occurs when truncate-lines is changed.
 255 )
 256 (setq calc-embedded-quiet nil)
 257
 258
 259 (defun calc-embedded-select (arg)
 260   (interactive "P")
 261   (calc-embedded arg)
 262   (and calc-embedded-info
 263        (eq (car-safe (aref calc-embedded-info 8)) 'calcFunc-evalto)
 264        (calc-select-part 1))
 265   (and calc-embedded-info
 266        (or (eq (car-safe (aref calc-embedded-info 8)) 'calcFunc-assign)
 267            (and (eq (car-safe (aref calc-embedded-info 8)) 'calcFunc-evalto)
 268                 (eq (car-safe (nth 1 (aref calc-embedded-info 8)))
 269                     'calcFunc-assign)))
 270        (calc-select-part 2))
 271 )
 272
 273
 274 (defun calc-embedded-update-formula (arg)
 275   (interactive "P")
 276   (if arg
 277       (let ((entry (assq (current-buffer) calc-embedded-active)))
 278         (while (setq entry (cdr entry))
 279           (and (eq (car-safe (aref (car entry) 8)) 'calcFunc-evalto)
 280                (or (not (consp arg))
 281                    (and (<= (aref (car entry) 2) (region-beginning))
 282                         (>= (aref (car entry) 3) (region-end))))
 283                (save-excursion
 284                  (calc-embedded-update (car entry) 14 t t)))))
 285     (if (and calc-embedded-info
 286              (eq (current-buffer) (aref calc-embedded-info 0))
 287              (>= (point) (aref calc-embedded-info 4))
 288              (<= (point) (aref calc-embedded-info 5)))
 289         (calc-evaluate 1)
 290       (let* ((opt (point))
 291              (info (calc-embedded-make-info (point) nil t))
 292              (pt (- opt (aref info 4))))
 293         (or (eq (car-safe (aref info 8)) 'error)
 294             (progn
 295               (save-excursion
 296                 (calc-embedded-update info 14 'eval t))
 297               (goto-char (+ (aref info 4) pt)))))))
 298 )
 299
 300
 301 (defun calc-embedded-edit (arg)
 302   (interactive "P")
 303   (let ((info (calc-embedded-make-info (point) nil t arg))
 304         str)
 305     (if (eq (car-safe (aref info 8)) 'error)
 306         (progn
 307           (goto-char (nth 1 (aref info 8)))
 308           (error (nth 2 (aref info 8)))))
 309     (calc-wrapper
 310      (setq str (math-showing-full-precision
 311                 (math-format-nice-expr (aref info 8) (screen-width))))
 312      (calc-edit-mode (list 'calc-embedded-finish-edit info))
 313      (insert str "\n")))
 314   (calc-show-edit-buffer)
 315 )
 316
 317 (defun calc-embedded-finish-edit (info)
 318   (let ((buf (current-buffer))
 319         (str (buffer-substring (point) (point-max)))
 320         (start (point))
 321         pos)
 322     (switch-to-buffer calc-original-buffer)
 323     (let ((val (save-excursion
 324                  (set-buffer (aref info 1))
 325                  (let ((calc-language nil)
 326                        (math-expr-opers math-standard-opers))
 327                    (math-read-expr str)))))
 328       (if (eq (car-safe val) 'error)
 329           (progn
 330             (switch-to-buffer buf)
 331             (goto-char (+ start (nth 1 val)))
 332             (error (nth 2 val))))
 333       (calc-embedded-original-buffer t info)
 334       (aset info 8 val)
 335       (calc-embedded-update info 14 t t)))
 336 )
 337
 338 (defun calc-do-embedded-activate (arg cbuf)
 339   (calc-plain-buffer-only)
 340   (if arg
 341       (calc-embedded-forget))
 342   (calc-find-globals)
 343   (if (< (prefix-numeric-value arg) 0)
 344       (message "Deactivating %s for Calc Embedded mode." (buffer-name))
 345     (message "Activating %s for Calc Embedded mode..." (buffer-name))
 346     (save-excursion
 347       (let* ((active (assq (current-buffer) calc-embedded-active))
 348              (info active)
 349              (pat " := \\| \\\\gets \\| => \\| \\\\evalto "))
 350         (if calc-embedded-announce-formula
 351             (setq pat (format "%s\\|\\(%s\\)"
 352                               pat calc-embedded-announce-formula)))
 353         (while (setq info (cdr info))
 354           (or (equal (buffer-substring (aref (car info) 2) (aref (car info) 3))
 355                      (aref (car info) 6))
 356               (setcdr active (delq (car info) (cdr active)))))
 357         (goto-char (point-min))
 358         (while (re-search-forward pat nil t)
 359           (if (looking-at calc-embedded-open-formula)
 360               (goto-char (match-end 1)))
 361           (setq info (calc-embedded-make-info (point) cbuf nil))
 362           (or (eq (car-safe (aref info 8)) 'error)
 363               (goto-char (aref info 5))))))
 364     (message "Activating %s for Calc Embedded mode...done" (buffer-name)))
 365   (calc-embedded-active-state t)
 366 )
 367
 368 (defun calc-plain-buffer-only ()
 369   (if (memq major-mode '(calc-mode calc-trail-mode calc-edit-mode))
 370       (error "This command should be used in a normal editing buffer"))
 371 )
 372
 373 (defun calc-embedded-active-state (state)
 374   (or (assq 'calc-embedded-all-active minor-mode-alist)
 375       (setq minor-mode-alist
 376             (cons '(calc-embedded-all-active " Active")
 377                   (cons '(calc-embedded-some-active " ~Active")
 378                         minor-mode-alist))))
 379   (let ((active (assq (current-buffer) calc-embedded-active)))
 380     (or (cdr active)
 381         (setq state nil)))
 382   (and (eq state 'more) calc-embedded-all-active (setq state t))
 383   (setq calc-embedded-all-active (eq state t)
 384         calc-embedded-some-active (not (memq state '(nil t))))
 385   (set-buffer-modified-p (buffer-modified-p))
 386 )
 387
 388
 389 (defun calc-embedded-original-buffer (switch &optional info)
 390   (or info (setq info calc-embedded-info))
 391   (or (buffer-name (aref info 0))
 392       (progn
 393         (error "Calc embedded mode: Original buffer has been killed")))
 394   (if switch
 395       (set-buffer (aref info 0)))
 396 )
 397
 398 (defun calc-embedded-word ()
 399   (interactive)
 400   (calc-embedded '(4))
 401 )
 402
 403 (defun calc-embedded-mark-formula (&optional body-only)
 404   "Put point at the beginning of this Calc formula, mark at the end.
 405 This normally marks the whole formula, including surrounding delimiters.
 406 With any prefix argument, marks only the formula itself."
 407   (interactive "P")
 408   (and (eq major-mode 'calc-mode)
 409        (error "This command should be used in a normal editing buffer"))
 410   (let (top bot outer-top outer-bot)
 411     (save-excursion
 412       (calc-embedded-find-bounds body-only))
 413     (push-mark (if body-only bot outer-bot) t)
 414     (goto-char (if body-only top outer-top)))
 415 )
 416
 417 (defun calc-embedded-find-bounds (&optional plain)
 418   ;; (while (and (bolp) (eq (following-char) ?\n))
 419   ;;  (forward-char 1))
 420   (and (eolp) (bolp) (not (eq (char-after (- (point) 2)) ?\n))
 421        (forward-char -1))
 422   (let ((home (point)))
 423     (or (and (looking-at calc-embedded-open-formula)
 424              (not (looking-at calc-embedded-close-formula)))
 425         (re-search-backward calc-embedded-open-formula nil t)
 426         (error "Can't find start of formula"))
 427     (and (eq (preceding-char) ?\$)  ; backward search for \$\$? won't back
 428          (eq (following-char) ?\$)  ; up over a second $, so do it by hand.
 429          (forward-char -1))
 430     (setq outer-top (point))
 431     (goto-char (match-end 0))
 432     (if (eq (following-char) ?\n)
 433         (forward-char 1))
 434     (or (bolp)
 435         (while (eq (following-char) ?\ )
 436           (forward-char 1)))
 437     (or (eq plain 'plain)
 438         (if (looking-at (regexp-quote calc-embedded-open-plain))
 439             (progn
 440               (goto-char (match-end 0))
 441               (search-forward calc-embedded-close-plain))))
 442     (setq top (point))
 443     (or (re-search-forward calc-embedded-close-formula nil t)
 444         (error "Can't find end of formula"))
 445     (if (< (point) home)
 446         (error "Not inside a formula"))
 447     (and (eq (following-char) ?\n) (not (bolp))
 448          (forward-char 1))
 449     (setq outer-bot (point))
 450     (goto-char (match-beginning 0))
 451     (if (eq (preceding-char) ?\n)
 452         (backward-char 1))
 453     (or (eolp)
 454         (while (eq (preceding-char) ?\ )
 455           (backward-char 1)))
 456     (setq bot (point)))
 457 )
 458
 459 (defun calc-embedded-kill-formula ()
 460   "Kill the formula surrounding point.
 461 If Calc Embedded mode was active, this deactivates it.
 462 The formula (including its surrounding delimiters) is saved in the kill ring.
 463 The command \\[yank] can retrieve it from there."
 464   (interactive)
 465   (and calc-embedded-info
 466        (calc-embedded nil))
 467   (calc-embedded-mark-formula)
 468   (kill-region (point) (mark))
 469   (pop-mark)
 470 )
 471
 472 (defun calc-embedded-copy-formula-as-kill ()
 473   "Save the formula surrounding point as if killed, but don't kill it."
 474   (interactive)
 475   (save-excursion
 476     (calc-embedded-mark-formula)
 477     (copy-region-as-kill (point) (mark))
 478     (pop-mark))
 479 )
 480
 481 (defun calc-embedded-duplicate ()
 482   (interactive)
 483   (let ((already calc-embedded-info)
 484         top bot outer-top outer-bot new-top)
 485     (if calc-embedded-info
 486         (progn
 487           (setq top (+ (aref calc-embedded-info 2))
 488                 bot (+ (aref calc-embedded-info 3))
 489                 outer-top (+ (aref calc-embedded-info 4))
 490                 outer-bot (+ (aref calc-embedded-info 5)))
 491           (calc-embedded nil))
 492       (calc-embedded-find-bounds))
 493     (goto-char outer-bot)
 494     (insert "\n")
 495     (setq new-top (point))
 496     (insert-buffer-substring (current-buffer) outer-top outer-bot)
 497     (goto-char (+ new-top (- top outer-top)))
 498     (let ((calc-embedded-quiet (if already t 'x)))
 499       (calc-embedded (+ new-top (- top outer-top))
 500                      (+ new-top (- bot outer-top))
 501                      new-top
 502                      (+ new-top (- outer-bot outer-top)))))
 503 )
 504
 505 (defun calc-embedded-next (arg)
 506   (interactive "P")
 507   (setq arg (prefix-numeric-value arg))
 508   (let* ((active (cdr (assq (current-buffer) calc-embedded-active)))
 509          (p active)
 510          (num (length active)))
 511     (or active
 512         (error "No active formulas in buffer"))
 513     (cond ((= arg 0))
 514           ((= arg -1)
 515            (if (<= (point) (aref (car active) 3))
 516                (goto-char (aref (nth (1- num) active) 2))
 517              (while (and (cdr p)
 518                          (> (point) (aref (nth 1 p) 3)))
 519                (setq p (cdr p)))
 520              (goto-char (aref (car p) 2))))
 521           ((< arg -1)
 522            (calc-embedded-next -1)
 523            (calc-embedded-next (+ (* num 1000) arg 1)))
 524           (t
 525            (setq arg (1+ (% (1- arg) num)))
 526            (while (and p (>= (point) (aref (car p) 2)))
 527              (setq p (cdr p)))
 528            (while (> (setq arg (1- arg)) 0)
 529              (setq p (if p (cdr p) (cdr active))))
 530            (goto-char (aref (car (or p active)) 2)))))
 531 )
 532
 533 (defun calc-embedded-previous (arg)
 534   (interactive "p")
 535   (calc-embedded-next (- (prefix-numeric-value arg)))
 536 )
 537
 538 (defun calc-embedded-new-formula ()
 539   (interactive)
 540   (and (eq major-mode 'calc-mode)
 541        (error "This command should be used in a normal editing buffer"))
 542   (if calc-embedded-info
 543       (calc-embedded nil))
 544   (let (top bot outer-top outer-bot)
 545     (if (and (eq (preceding-char) ?\n)
 546              (string-match "\\`\n" calc-embedded-open-new-formula))
 547         (progn
 548           (setq outer-top (1- (point)))
 549           (forward-char -1)
 550           (insert (substring calc-embedded-open-new-formula 1)))
 551       (setq outer-top (point))
 552       (insert calc-embedded-open-new-formula))
 553     (setq top (point))
 554     (insert " ")
 555     (setq bot (point))
 556     (insert calc-embedded-close-new-formula)
 557     (if (and (eq (following-char) ?\n)
 558              (string-match "\n\\'" calc-embedded-close-new-formula))
 559         (delete-char 1))
 560     (setq outer-bot (point))
 561     (goto-char top)
 562     (let ((calc-embedded-quiet 'x))
 563       (calc-embedded top bot outer-top outer-bot)))
 564 )
 565
 566 (defun calc-embedded-forget ()
 567   (interactive)
 568   (setq calc-embedded-active (delq (assq (current-buffer) calc-embedded-active)
 569                                    calc-embedded-active))
 570   (calc-embedded-active-state nil)
 571 )
 572
 573
 574 (defun calc-embedded-set-modes (gmodes modes local-modes &optional temp)
 575   (let ((the-language (calc-embedded-language))
 576         (the-display-just (calc-embedded-justify))
 577         (v gmodes)
 578         (changed nil)
 579         found value)
 580     (while v
 581       (or (symbolp (car v))
 582           (and (setq found (assq (car (car v)) modes))
 583                (not (eq (cdr found) 'default)))
 584           (and (setq found (assq (car (car v)) local-modes))
 585                (not (eq (cdr found) 'default)))
 586           (progn
 587             (if (eq (setq value (cdr (car v))) 'default)
 588                 (setq value (cdr (assq (car (car v)) calc-mode-var-list))))
 589             (equal (symbol-value (car (car v))) value))
 590           (progn
 591             (setq changed t)
 592             (if temp (setq prev-modes (cons (cons (car (car v))
 593                                                   (symbol-value (car (car v))))
 594                                             prev-modes)))
 595             (set (car (car v)) value)))
 596       (setq v (cdr v)))
 597     (setq v modes)
 598     (while v
 599       (or (and (setq found (assq (car (car v)) local-modes))
 600                (not (eq (cdr found) 'default)))
 601           (eq (setq value (cdr (car v))) 'default)
 602           (equal (symbol-value (car (car v))) value)
 603           (progn
 604             (setq changed t)
 605             (if temp (setq prev-modes (cons (cons (car (car v))
 606                                                   (symbol-value (car (car v))))
 607                                             prev-modes)))
 608             (set (car (car v)) value)))
 609       (setq v (cdr v)))
 610     (setq v local-modes)
 611     (while v
 612       (or (eq (setq value (cdr (car v))) 'default)
 613           (equal (symbol-value (car (car v))) value)
 614           (progn
 615             (setq changed t)
 616             (if temp (setq prev-modes (cons (cons (car (car v))
 617                                                   (symbol-value (car (car v))))
 618                                             prev-modes)))
 619             (set (car (car v)) value)))
 620       (setq v (cdr v)))
 621     (and changed (not (eq temp t))
 622          (progn
 623            (calc-embedded-set-justify the-display-just)
 624            (calc-embedded-set-language the-language)))
 625     (and changed (not temp)
 626          (progn
 627            (setq calc-full-float-format (list (if (eq (car calc-float-format)
 628                                                       'fix)
 629                                                   'float
 630                                                 (car calc-float-format))
 631                                               0))
 632            (calc-refresh)))
 633     changed)
 634 )
 635
 636 (defun calc-embedded-language ()
 637   (if calc-language-option
 638       (list calc-language calc-language-option)
 639     calc-language)
 640 )
 641
 642 (defun calc-embedded-set-language (lang)
 643   (let ((option nil))
 644     (if (consp lang)
 645         (setq option (nth 1 lang)
 646               lang (car lang)))
 647     (or (and (eq lang calc-language)
 648              (equal option calc-language-option))
 649         (calc-set-language lang option t)))
 650 )
 651
 652 (defun calc-embedded-justify ()
 653   (if calc-display-origin
 654       (list calc-display-just calc-display-origin)
 655     calc-display-just)
 656 )
 657
 658 (defun calc-embedded-set-justify (just)
 659   (if (consp just)
 660       (setq calc-display-origin (nth 1 just)
 661             calc-display-just (car just))
 662     (setq calc-display-just just
 663           calc-display-origin nil))
 664 )
 665
 666
 667 (defun calc-find-globals ()
 668   (interactive)
 669   (and (eq major-mode 'calc-mode)
 670        (error "This command should be used in a normal editing buffer"))
 671   (make-local-variable 'calc-embedded-globals)
 672   (let ((case-fold-search nil)
 673         (modes nil)
 674         (save-pt (point))
 675         found value)
 676     (goto-char (point-min))
 677     (while (re-search-forward "\\[calc-global-mode: *\\([-a-z]+\\): *\\(\"\\([^\"\n\\]\\|\\\\.\\)*\"\\|[- ()a-zA-Z0-9]+\\)\\]" nil t)
 678       (and (setq found (assoc (buffer-substring (match-beginning 1)
 679                                                 (match-end 1))
 680                               calc-embedded-mode-vars))
 681            (or (assq (cdr found) modes)
 682                (setq modes (cons (cons (cdr found)
 683                                        (car (read-from-string
 684                                              (buffer-substring
 685                                               (match-beginning 2)
 686                                               (match-end 2)))))
 687                                  modes)))))
 688     (setq calc-embedded-globals (cons t modes))
 689     (goto-char save-pt))
 690 )
 691
 692 (defun calc-embedded-find-modes ()
 693   (let ((case-fold-search nil)
 694         (save-pt (point))
 695         (no-defaults t)
 696         (modes nil)
 697         (emodes nil)
 698         (pmodes nil)
 699         found value)
 700     (while (and no-defaults (search-backward "[calc-" nil t))
 701       (forward-char 6)
 702       (or (and (looking-at "mode: *\\([-a-z]+\\): *\\(\"\\([^\"\n\\]\\|\\\\.\\)*\"\\|[- ()a-zA-Z0-9]+\\)]")
 703                (setq found (assoc (buffer-substring (match-beginning 1)
 704                                                     (match-end 1))
 705                                   calc-embedded-mode-vars))
 706                (or (assq (cdr found) modes)
 707                    (setq modes (cons (cons (cdr found)
 708                                            (car (read-from-string
 709                                                  (buffer-substring
 710                                                   (match-beginning 2)
 711                                                   (match-end 2)))))
 712                                      modes))))
 713           (and (looking-at "perm-mode: *\\([-a-z]+\\): *\\(\"\\([^\"\n\\]\\|\\\\.\\)*\"\\|[- ()a-zA-Z0-9]+\\)]")
 714                (setq found (assoc (buffer-substring (match-beginning 1)
 715                                                     (match-end 1))
 716                                   calc-embedded-mode-vars))
 717                (or (assq (cdr found) pmodes)
 718                    (setq pmodes (cons (cons (cdr found)
 719                                             (car (read-from-string
 720                                                   (buffer-substring
 721                                                    (match-beginning 2)
 722                                                    (match-end 2)))))
 723                                       pmodes))))
 724           (and (looking-at "edit-mode: *\\([-a-z]+\\): *\\(\"\\([^\"\n\\]\\|\\\\.\\)*\"\\|[- ()a-zA-Z0-9]+\\)]")
 725                (setq found (assoc (buffer-substring (match-beginning 1)
 726                                                     (match-end 1))
 727                                   calc-embedded-mode-vars))
 728                (or (assq (cdr found) emodes)
 729                    (setq emodes (cons (cons (cdr found)
 730                                             (car (read-from-string
 731                                                   (buffer-substring
 732                                                    (match-beginning 2)
 733                                                    (match-end 2)))))
 734                                       emodes))))
 735           (and (looking-at "defaults]")
 736                (setq no-defaults nil)))
 737       (backward-char 6))
 738     (goto-char save-pt)
 739     (list modes emodes pmodes))
 740 )
 741
 742
 743 (defun calc-embedded-make-info (point cbuf fresh &optional
 744                                       top bot outer-top outer-bot)
 745   (let* ((bufentry (assq (current-buffer) calc-embedded-active))
 746          (found bufentry)
 747          (force (and fresh top))
 748          (fixed top)
 749          (new-info nil)
 750          info str)
 751     (or found
 752         (setq found (list (current-buffer))
 753               calc-embedded-active (cons found calc-embedded-active)))
 754     (while (and (cdr found)
 755                 (> point (aref (car (cdr found)) 3)))
 756       (setq found (cdr found)))
 757     (if (and (cdr found)
 758              (>= point (aref (nth 1 found) 2)))
 759         (setq info (nth 1 found))
 760       (setq info (make-vector 16 nil)
 761             new-info t
 762             fresh t)
 763       (aset info 0 (current-buffer))
 764       (aset info 1 (or cbuf (save-excursion
 765                               (calc-create-buffer)
 766                               (current-buffer)))))
 767     (if (and (integerp top) (not bot))  ; started with a user-supplied argument
 768         (progn
 769           (if (= (setq arg (prefix-numeric-value arg)) 0)
 770               (progn
 771                 (aset info 2 (copy-marker (region-beginning)))
 772                 (aset info 3 (copy-marker (region-end))))
 773             (aset info (if (> arg 0) 2 3) (point-marker))
 774             (forward-line arg)
 775             (aset info (if (> arg 0) 3 2) (point-marker)))
 776           (aset info 4 (copy-marker (aref info 2)))
 777           (aset info 5 (copy-marker (aref info 3))))
 778       (if (aref info 4)
 779           (setq top (aref info 2)
 780                 fixed top)
 781         (if (consp top)
 782             (let ((calc-embedded-open-formula calc-embedded-open-word)
 783                   (calc-embedded-close-formula calc-embedded-close-word))
 784               (calc-embedded-find-bounds 'plain))
 785           (or top
 786               (calc-embedded-find-bounds 'plain)))
 787         (aset info 2 (copy-marker (min top bot)))
 788         (aset info 3 (copy-marker (max top bot)))
 789         (aset info 4 (copy-marker (or outer-top (aref info 2))))
 790         (aset info 5 (copy-marker (or outer-bot (aref info 3))))))
 791     (goto-char (aref info 2))
 792     (if new-info
 793         (progn
 794           (or (bolp) (aset info 7 t))
 795           (goto-char (aref info 3))
 796           (or (bolp) (eolp) (aset info 7 t))))
 797     (if fresh
 798         (let ((modes (calc-embedded-find-modes)))
 799           (aset info 12 (car modes))
 800           (aset info 13 (nth 1 modes))
 801           (aset info 14 (nth 2 modes))))
 802     (aset info 15 calc-embedded-globals)
 803     (setq str (buffer-substring (aref info 2) (aref info 3)))
 804     (if (or force
 805             (not (equal str (aref info 6))))
 806         (if (and fixed (aref info 6))
 807             (progn
 808               (aset info 4 nil)
 809               (calc-embedded-make-info point cbuf nil)
 810               (setq new-info nil))
 811           (let* ((open-plain calc-embedded-open-plain)
 812                  (close-plain calc-embedded-close-plain)
 813                  (pref-len (length open-plain))
 814                  (vars-used nil)
 815                  suff-pos val temp)
 816             (save-excursion
 817               (set-buffer (aref info 1))
 818               (calc-embedded-set-modes (aref info 15)
 819                                        (aref info 12) (aref info 14))
 820               (if (and (> (length str) pref-len)
 821                        (equal (substring str 0 pref-len) open-plain)
 822                        (setq suff-pos (string-match (regexp-quote close-plain)
 823                                                     str pref-len)))
 824                   (setq val (math-read-plain-expr
 825                              (substring str pref-len suff-pos)))
 826                 (if (string-match "[^ \t\n]" str)
 827                     (setq pref-len 0
 828                           val (math-read-big-expr str))
 829                   (setq val nil))))
 830             (if (eq (car-safe val) 'error)
 831                 (setq val (list 'error
 832                                 (+ (aref info 2) pref-len (nth 1 val))
 833                                 (nth 2 val))))
 834             (aset info 6 str)
 835             (aset info 8 val)
 836             (setq temp val)
 837             (if (eq (car-safe temp) 'calcFunc-evalto)
 838                 (setq temp (nth 1 temp))
 839               (if (eq (car-safe temp) 'error)
 840                   (if new-info
 841                       (setq new-info nil)
 842                     (setcdr found (delq info (cdr found)))
 843                     (calc-embedded-active-state 'less))))
 844             (aset info 9 (and (eq (car-safe temp) 'calcFunc-assign)
 845                               (nth 1 temp)))
 846             (if (memq (car-safe val) '(calcFunc-evalto calcFunc-assign))
 847                 (calc-embedded-find-vars val))
 848             (aset info 10 vars-used)
 849             (aset info 11 nil))))
 850     (if new-info
 851         (progn
 852           (setcdr found (cons info (cdr found)))
 853           (calc-embedded-active-state 'more)))
 854     info)
 855 )
 856
 857 (defun calc-embedded-find-vars (x)
 858   (cond ((Math-primp x)
 859          (and (eq (car-safe x) 'var)
 860               (not (assoc x vars-used))
 861               (setq vars-used (cons (list x) vars-used))))
 862         ((eq (car x) 'calcFunc-evalto)
 863          (calc-embedded-find-vars (nth 1 x)))
 864         ((eq (car x) 'calcFunc-assign)
 865          (calc-embedded-find-vars (nth 2 x)))
 866         (t
 867          (and (eq (car x) 'calcFunc-subscr)
 868               (eq (car-safe (nth 1 x)) 'var)
 869               (Math-primp (nth 2 x))
 870               (not (assoc x vars-used))
 871               (setq vars-used (cons (list x) vars-used)))
 872          (while (setq x (cdr x))
 873            (calc-embedded-find-vars (car x)))))
 874 )
 875
 876
 877 (defun calc-embedded-evaluate-expr (x)
 878   (let ((vars-used (aref calc-embedded-info 10)))
 879     (or vars-used (calc-embedded-find-vars x))
 880     (if vars-used
 881         (let ((active (assq (aref calc-embedded-info 0) calc-embedded-active))
 882               (args nil))
 883           (save-excursion
 884             (calc-embedded-original-buffer t)
 885             (or active
 886                 (progn
 887                   (calc-embedded-activate)
 888                   (setq active (assq (aref calc-embedded-info 0)
 889                                      calc-embedded-active))))
 890             (while vars-used
 891               (calc-embedded-eval-get-var (car (car vars-used)) active)
 892               (setq vars-used (cdr vars-used))))
 893           (calc-embedded-subst x))
 894       (calc-normalize (math-evaluate-expr-rec x))))
 895 )
 896
 897 (defun calc-embedded-subst (x)
 898   (if (and (eq (car-safe x) 'calcFunc-evalto) (cdr x))
 899       (let ((rhs (calc-embedded-subst (nth 1 x))))
 900         (list 'calcFunc-evalto
 901               (nth 1 x)
 902               (if (eq (car-safe rhs) 'calcFunc-assign) (nth 2 rhs) rhs)))
 903     (if (and (eq (car-safe x) 'calcFunc-assign) (= (length x) 3))
 904         (list 'calcFunc-assign
 905               (nth 1 x)
 906               (calc-embedded-subst (nth 2 x)))
 907       (calc-normalize (math-evaluate-expr-rec (math-multi-subst-rec x)))))
 908 )
 909
 910 (defun calc-embedded-eval-get-var (var base)
 911   (let ((entry base)
 912         (point (aref calc-embedded-info 2))
 913         (last nil)
 914         val)
 915     (while (and (setq entry (cdr entry))
 916                 (or (not (equal var (aref (car entry) 9)))
 917                     (and (> point (aref (car entry) 3))
 918                          (setq last entry)))))
 919     (if last
 920         (setq entry last))
 921     (if entry
 922         (progn
 923           (setq entry (car entry))
 924           (if (equal (buffer-substring (aref entry 2) (aref entry 3))
 925                      (aref entry 6))
 926               (progn
 927                 (or (aref entry 11)
 928                     (save-excursion
 929                       (calc-embedded-update entry 14 t nil)))
 930                 (setq val (aref entry 11))
 931                 (if (eq (car-safe val) 'calcFunc-evalto)
 932                     (setq val (nth 2 val)))
 933                 (if (eq (car-safe val) 'calcFunc-assign)
 934                     (setq val (nth 2 val)))
 935                 (setq args (cons (cons var val) args)))
 936             (calc-embedded-activate)
 937             (calc-embedded-eval-get-var var base)))))
 938 )
 939
 940
 941 (defun calc-embedded-update (info which need-eval need-display
 942                                   &optional str entry old-val)
 943   (let* ((prev-modes nil)
 944          (open-plain calc-embedded-open-plain)
 945          (close-plain calc-embedded-close-plain)
 946          (vars-used nil)
 947          (evalled nil)
 948          (val (aref info 8))
 949          (old-eval (aref info 11)))
 950     (or old-val (setq old-val val))
 951     (if (eq (car-safe val) 'calcFunc-evalto)
 952         (setq need-display t))
 953     (unwind-protect
 954         (progn
 955           (set-buffer (aref info 1))
 956           (and which
 957                (calc-embedded-set-modes (aref info 15) (aref info 12)
 958                                         (aref info which)
 959                                         (if need-display 'full t)))
 960           (if (memq (car-safe val) '(calcFunc-evalto calcFunc-assign))
 961               (calc-embedded-find-vars val))
 962           (if need-eval
 963               (let ((calc-embedded-info info))
 964                 (setq val (math-evaluate-expr val)
 965                       evalled val)))
 966           (if (or (eq need-eval 'eval) (eq (car-safe val) 'calcFunc-evalto))
 967               (aset info 8 val))
 968           (aset info 9 nil)
 969           (aset info 10 vars-used)
 970           (aset info 11 nil)
 971           (if (or need-display (eq (car-safe val) 'calcFunc-evalto))
 972               (let ((extra (if (eq calc-language 'big) 1 0)))
 973                 (or entry (setq entry (list val 1 nil)))
 974                 (or str (progn
 975                           (setq str (let ((calc-line-numbering nil))
 976                                       (math-format-stack-value entry)))
 977                           (if (eq calc-language 'big)
 978                               (setq str (substring str 0 -1)))))
 979                 (and calc-show-plain
 980                      (setq str (concat open-plain
 981                                        (math-showing-full-precision
 982                                         (math-format-flat-expr val 0))
 983                                        close-plain
 984                                        str)))
 985                 (save-excursion
 986                   (calc-embedded-original-buffer t info)
 987                   (or (equal str (aref info 6))
 988                       (let ((delta (- (aref info 5) (aref info 3)))
 989                             (buffer-read-only nil))
 990                         (goto-char (aref info 2))
 991                         (delete-region (point) (aref info 3))
 992                         (and (> (nth 1 entry) (1+ extra))
 993                              (aref info 7)
 994                              (progn
 995                                (aset info 7 nil)
 996                                (delete-horizontal-space)
 997                                (insert "\n\n")
 998                                (delete-horizontal-space)
 999                                (backward-char 1)))
1000                         (insert str)
1001                         (set-marker (aref info 3) (point))
1002                         (set-marker (aref info 5) (+ (point) delta))
1003                         (aset info 6 str))))))
1004           (if (eq (car-safe val) 'calcFunc-evalto)
1005               (progn
1006                 (setq evalled (nth 2 val)
1007                       val (nth 1 val))))
1008           (if (eq (car-safe val) 'calcFunc-assign)
1009               (progn
1010                 (aset info 9 (nth 1 val))
1011                 (aset info 11 (or evalled
1012                                   (let ((calc-embedded-info info))
1013                                     (math-evaluate-expr (nth 2 val)))))
1014                 (or (equal old-eval (aref info 11))
1015                     (calc-embedded-var-change (nth 1 val) (aref info 0))))
1016             (if (eq (car-safe old-val) 'calcFunc-evalto)
1017                 (setq old-val (nth 1 old-val)))
1018             (if (eq (car-safe old-val) 'calcFunc-assign)
1019                 (calc-embedded-var-change (nth 1 old-val) (aref info 0)))))
1020       (set-buffer (aref info 1))
1021       (while prev-modes
1022         (cond ((eq (car (car prev-modes)) 'the-language)
1023                (if need-display
1024                    (calc-embedded-set-language (cdr (car prev-modes)))))
1025               ((eq (car (car prev-modes)) 'the-display-just)
1026                (if need-display
1027                    (calc-embedded-set-justify (cdr (car prev-modes)))))
1028               (t
1029                (set (car (car prev-modes)) (cdr (car prev-modes)))))
1030         (setq prev-modes (cdr prev-modes)))))
1031 )
1032
1033
1034
1035
1036 ;;; These are hooks called by the main part of Calc.
1037
1038 (defun calc-embedded-select-buffer ()
1039   (if (eq (current-buffer) (aref calc-embedded-info 0))
1040       (let ((info calc-embedded-info)
1041             horiz vert)
1042         (if (and (or (< (point) (aref info 4))
1043                      (> (point) (aref info 5)))
1044                  (not calc-embedded-no-reselect))
1045             (let ((calc-embedded-quiet t))
1046               (message "(Switching Calc Embedded mode to new formula.)")
1047               (calc-embedded nil)
1048               (calc-embedded nil)))
1049         (setq horiz (max (min (current-column) (- (point) (aref info 2))) 0)
1050               vert (if (<= (aref info 2) (point))
1051                        (- (count-lines (aref info 2) (point))
1052                           (if (bolp) 0 1))
1053                      0))
1054         (set-buffer (aref info 1))
1055         (if calc-show-plain
1056             (if (= vert 0)
1057                 (setq horiz 0)
1058               (setq vert (1- vert))))
1059         (calc-cursor-stack-index 1)
1060         (if calc-line-numbering
1061             (setq horiz (+ horiz 4)))
1062         (if (> vert 0)
1063             (forward-line vert))
1064         (forward-char (min horiz
1065                            (- (point-max) (point)))))
1066     (calc-select-buffer))
1067 )
1068 (setq calc-embedded-no-reselect nil)
1069
1070 (defun calc-embedded-finish-command ()
1071   (let ((buf (current-buffer))
1072         horiz vert)
1073     (save-excursion
1074       (set-buffer (aref calc-embedded-info 1))
1075       (if (> (calc-stack-size) 0)
1076           (let ((pt (point))
1077                 (col (current-column))
1078                 (bol (bolp)))
1079             (calc-cursor-stack-index 0)
1080             (if (< pt (point))
1081                 (progn
1082                   (calc-cursor-stack-index 1)
1083                   (if (>= pt (point))
1084                       (progn
1085                         (setq horiz (- col (if calc-line-numbering 4 0))
1086                               vert (- (count-lines (point) pt)
1087                                       (if bol 0 1)))
1088                         (if calc-show-plain
1089                             (setq vert (max 1 (1+ vert))))))))
1090             (goto-char pt))))
1091     (if horiz
1092         (progn
1093           (set-buffer (aref calc-embedded-info 0))
1094           (goto-char (aref calc-embedded-info 2))
1095           (if (> vert 0)
1096               (forward-line vert))
1097           (forward-char (max horiz 0))
1098           (set-buffer buf))))
1099 )
1100
1101 (defun calc-embedded-stack-change ()
1102   (or calc-executing-macro
1103       (save-excursion
1104         (set-buffer (aref calc-embedded-info 1))
1105         (let* ((info calc-embedded-info)
1106                (extra-line (if (eq calc-language 'big) 1 0))
1107                (the-point (point))
1108                (empty (= (calc-stack-size) 0))
1109                (entry (if empty
1110                           (list '(var empty var-empty) 1 nil)
1111                         (calc-top 1 'entry)))
1112                (old-val (aref info 8))
1113                top bot str)
1114           (if empty
1115               (setq str "empty")
1116             (save-excursion
1117               (calc-cursor-stack-index 1)
1118               (setq top (point))
1119               (calc-cursor-stack-index 0)
1120               (setq bot (- (point) extra-line))
1121               (setq str (buffer-substring top (- bot 1))))
1122             (if calc-line-numbering
1123                 (let ((pos 0))
1124                   (setq str (substring str 4))
1125                   (while (setq pos (string-match "\n...." str pos))
1126                     (setq str (concat (substring str 0 (1+ pos))
1127                                       (substring str (+ pos 5)))
1128                           pos (1+ pos))))))
1129           (calc-embedded-original-buffer t)
1130           (aset info 8 (car entry))
1131           (calc-embedded-update info 13 nil t str entry old-val))))
1132 )
1133
1134 (defun calc-embedded-mode-line-change ()
1135   (let ((str mode-line-buffer-identification))
1136     (save-excursion
1137       (calc-embedded-original-buffer t)
1138       (setq mode-line-buffer-identification str)
1139       (set-buffer-modified-p (buffer-modified-p))))
1140 )
1141
1142 (defun calc-embedded-modes-change (vars)
1143   (if (eq (car vars) 'calc-language) (setq vars '(the-language)))
1144   (if (eq (car vars) 'calc-display-just) (setq vars '(the-display-just)))
1145   (while (and vars
1146               (not (rassq (car vars) calc-embedded-mode-vars)))
1147     (setq vars (cdr vars)))
1148   (if (and vars calc-mode-save-mode (not (eq calc-mode-save-mode 'save)))
1149       (save-excursion
1150         (let* ((save-mode calc-mode-save-mode)
1151                (header (if (eq save-mode 'local)
1152                            "calc-mode:"
1153                          (format "calc-%s-mode:" save-mode)))
1154                (the-language (calc-embedded-language))
1155                (the-display-just (calc-embedded-justify))
1156                (values (mapcar 'symbol-value vars))
1157                (num (cond ((eq save-mode 'local) 12)
1158                           ((eq save-mode 'edit) 13)
1159                           ((eq save-mode 'perm) 14)
1160                           (t nil)))
1161                base limit mname mlist)
1162           (calc-embedded-original-buffer t)
1163           (save-excursion
1164             (if (eq save-mode 'global)
1165                 (setq base (point-max)
1166                       limit (point-min)
1167                       mlist calc-embedded-globals)
1168               (goto-char (aref calc-embedded-info 4))
1169               (beginning-of-line)
1170               (setq base (point)
1171                     limit (max (- (point) 1000) (point-min))
1172                     mlist (and num (aref calc-embedded-info num)))
1173               (and (re-search-backward
1174                     (format "\\(%s\\)[^\001]*\\(%s\\)\\|\\[calc-defaults]"
1175                             calc-embedded-open-formula
1176                             calc-embedded-close-formula) limit t)
1177                    (setq limit (point))))
1178             (while vars
1179               (goto-char base)
1180               (if (setq mname (car (rassq (car vars)
1181                                           calc-embedded-mode-vars)))
1182                   (let ((buffer-read-only nil)
1183                         (found (assq (car vars) mlist)))
1184                     (if found
1185                         (setcdr found (car values))
1186                       (setq mlist (cons (cons (car vars) (car values)) mlist))
1187                       (if num
1188                           (aset calc-embedded-info num mlist)
1189                         (if (eq save-mode 'global)
1190                             (setq calc-embedded-globals mlist))))
1191                     (if (re-search-backward
1192                          (format "\\[%s *%s: *\\(\"\\([^\"\n\\]\\|\\\\.\\)*\"\\|[- ()a-zA-Z0-9]+\\)]"
1193                                  header mname)
1194                          limit t)
1195                         (progn
1196                           (goto-char (match-beginning 1))
1197                           (delete-region (point) (match-end 1))
1198                           (insert (prin1-to-string (car values))))
1199                       (goto-char base)
1200                       (insert-before-markers
1201                        calc-embedded-open-mode
1202                        "[" header " " mname ": "
1203                        (prin1-to-string (car values)) "]"
1204                        calc-embedded-close-mode))))
1205               (setq vars (cdr vars)
1206                     values (cdr values)))))))
1207 )
1208
1209 (defun calc-embedded-var-change (var &optional buf)
1210   (if (symbolp var)
1211       (setq var (list 'var
1212                       (if (string-match "\\`var-.+\\'"
1213                                         (symbol-name var))
1214                           (intern (substring (symbol-name var) 4))
1215                         var)
1216                       var)))
1217   (save-excursion
1218     (let ((manual (not calc-auto-recompute))
1219           (bp calc-embedded-active)
1220           (first t))
1221       (if buf (setq bp (memq (assq buf bp) bp)))
1222       (while bp
1223         (let ((calc-embedded-no-reselect t)
1224               (p (and (buffer-name (car (car bp)))
1225                       (cdr (car bp)))))
1226           (while p
1227             (if (assoc var (aref (car p) 10))
1228                 (if manual
1229                     (if (aref (car p) 11)
1230                         (progn
1231                           (aset (car p) 11 nil)
1232                           (if (aref (car p) 9)
1233                               (calc-embedded-var-change (aref (car p) 9)))))
1234                   (set-buffer (aref (car p) 0))
1235                   (if (equal (buffer-substring (aref (car p) 2)
1236                                                (aref (car p) 3))
1237                              (aref (car p) 6))
1238                       (let ((calc-embedded-info nil))
1239                         (or calc-embedded-quiet
1240                             (message "Recomputing..."))
1241                         (setq first nil)
1242                         (calc-wrapper
1243                          (set-buffer (aref (car p) 0))
1244                          (calc-embedded-update (car p) 14 t nil)))
1245                     (setcdr (car bp) (delq (car p) (cdr (car bp))))
1246                     (message
1247                      "(Tried to recompute but formula was changed or missing.)"))))
1248             (setq p (cdr p))))
1249         (setq bp (if buf nil (cdr bp))))
1250       (or first calc-embedded-quiet (message ""))))
1251 )
1252
1253
1254
1255
1256