lisp/progmodes/scheme.el

   1 ;;; scheme.el --- Scheme (and DSSSL) editing mode
   2
   3 ;; Copyright (C) 1986, 87, 88, 97, 1998 Free Software Foundation, Inc.
   4
   5 ;; Author: Bill Rozas <jinx@martigny.ai.mit.edu>
   6 ;; Adapted-by: Dave Love <d.love@dl.ac.uk>
   7 ;; Keywords: languages, lisp
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software; you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation; either version 2, or (at your option)
  14 ;; any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  24 ;; Boston, MA 02111-1307, USA.
  25
  26 ;;; Commentary:
  27
  28 ;; The major mode for editing Scheme-type Lisp code, very similar to
  29 ;; the Lisp mode documented in the Emacs manual.  `dsssl-mode' is a
  30 ;; variant of scheme-mode for editing DSSSL specifications for SGML
  31 ;; documents.  [As of Apr 1997, some pointers for DSSSL may be found,
  32 ;; for instance, at <URL:http://www.sil.org/sgml/related.html#dsssl>.]
  33 ;; All these Lisp-ish modes vary basically in details of the language
  34 ;; syntax they highlight/indent/index, but dsssl-mode uses "^;;;" as
  35 ;; the page-delimiter since ^L isn't normally a legal SGML character.
  36 ;;
  37 ;; For interacting with a Scheme interpreter See also `run-scheme' in
  38 ;; the `cmuscheme' package and also the implementation-specific
  39 ;; `xscheme' package.
  40
  41 ;; Here's a recipe to generate a TAGS file for DSSSL, by the way:
  42 ;; etags --lang=scheme --regex='/[ \t]*(\(mode\|element\)[ \t
  43 ;; ]+\([^ \t(
  44 ;; ]+\)/\2/' --regex='/[ \t]*(element[ \t
  45 ;; ]*([^)]+[ \t
  46 ;; ]+\([^)]+\)[ \t
  47 ;; ]*)/\1/' --regex='/(declare[^ \t
  48 ;; ]*[ \t
  49 ;; ]+\([^ \t
  50 ;; ]+\)/\1/' "$@"
  51
  52 ;;; Code:
  53 \f
  54 (require 'lisp-mode)
  55
  56 (defvar scheme-mode-syntax-table nil)
  57 (if (not scheme-mode-syntax-table)
  58     (let ((i 0))
  59       (setq scheme-mode-syntax-table (make-syntax-table))
  60       (set-syntax-table scheme-mode-syntax-table)
  61
  62       ;; Default is atom-constituent.
  63       (while (< i 256)
  64         (modify-syntax-entry i "_   ")
  65         (setq i (1+ i)))
  66
  67       ;; Word components.
  68       (setq i ?0)
  69       (while (<= i ?9)
  70         (modify-syntax-entry i "w   ")
  71         (setq i (1+ i)))
  72       (setq i ?A)
  73       (while (<= i ?Z)
  74         (modify-syntax-entry i "w   ")
  75         (setq i (1+ i)))
  76       (setq i ?a)
  77       (while (<= i ?z)
  78         (modify-syntax-entry i "w   ")
  79         (setq i (1+ i)))
  80
  81       ;; Whitespace
  82       (modify-syntax-entry ?\t "    ")
  83       (modify-syntax-entry ?\n ">   ")
  84       (modify-syntax-entry ?\f "    ")
  85       (modify-syntax-entry ?\r "    ")
  86       (modify-syntax-entry ?  "    ")
  87
  88       ;; These characters are delimiters but otherwise undefined.
  89       ;; Brackets and braces balance for editing convenience.
  90       (modify-syntax-entry ?\[ "(]  ")
  91       (modify-syntax-entry ?\] ")[  ")
  92       (modify-syntax-entry ?{ "(}  ")
  93       (modify-syntax-entry ?} "){  ")
  94       (modify-syntax-entry ?\| "  23")
  95
  96       ;; Other atom delimiters
  97       (modify-syntax-entry ?\( "()  ")
  98       (modify-syntax-entry ?\) ")(  ")
  99       (modify-syntax-entry ?\; "<   ")
 100       (modify-syntax-entry ?\" "\"    ")
 101       (modify-syntax-entry ?' "  p")
 102       (modify-syntax-entry ?` "  p")
 103
 104       ;; Special characters
 105       (modify-syntax-entry ?, "_ p")
 106       (modify-syntax-entry ?@ "_ p")
 107       (modify-syntax-entry ?# "_ p14")
 108       (modify-syntax-entry ?\\ "\\   ")))
 109 \f
 110 (defvar scheme-mode-abbrev-table nil)
 111 (define-abbrev-table 'scheme-mode-abbrev-table ())
 112
 113 (defvar scheme-imenu-generic-expression
 114       '((nil
 115          "^(define\\(\\|-\\(generic\\(\\|-procedure\\)\\|method\\)\\)*\\s-+(?\\(\\sw+\\)" 4)
 116         ("Types"
 117          "^(define-class\\s-+(?\\(\\sw+\\)" 1)
 118         ("Macros"
 119          "^(\\(defmacro\\|define-macro\\|define-syntax\\)\\s-+(?\\(\\sw+\\)" 2))
 120   "Imenu generic expression for Scheme mode.  See `imenu-generic-expression'.")
 121
 122 (defun scheme-mode-variables ()
 123   (set-syntax-table scheme-mode-syntax-table)
 124   (setq local-abbrev-table scheme-mode-abbrev-table)
 125   (make-local-variable 'paragraph-start)
 126   (setq paragraph-start (concat "$\\|" page-delimiter))
 127   (make-local-variable 'paragraph-separate)
 128   (setq paragraph-separate paragraph-start)
 129   (make-local-variable 'paragraph-ignore-fill-prefix)
 130   (setq paragraph-ignore-fill-prefix t)
 131   (make-local-variable 'fill-paragraph-function)
 132   (setq fill-paragraph-function 'lisp-fill-paragraph)
 133   ;; Adaptive fill mode gets in the way of auto-fill,
 134   ;; and should make no difference for explicit fill
 135   ;; because lisp-fill-paragraph should do the job.
 136   (make-local-variable 'adaptive-fill-mode)
 137   (setq adaptive-fill-mode nil)
 138   (make-local-variable 'normal-auto-fill-function)
 139   (setq normal-auto-fill-function 'lisp-mode-auto-fill)
 140   (make-local-variable 'indent-line-function)
 141   (setq indent-line-function 'lisp-indent-line)
 142   (make-local-variable 'parse-sexp-ignore-comments)
 143   (setq parse-sexp-ignore-comments t)
 144   (make-local-variable 'outline-regexp)
 145   (setq outline-regexp ";;; \\|(....")
 146   (make-local-variable 'comment-start)
 147   (setq comment-start ";")
 148   (make-local-variable 'comment-start-skip)
 149   ;; Look within the line for a ; following an even number of backslashes
 150   ;; after either a non-backslash or the line beginning.
 151   (setq comment-start-skip "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\);+[ \t]*")
 152   (make-local-variable 'comment-column)
 153   (setq comment-column 40)
 154   (make-local-variable 'comment-indent-function)
 155   (setq comment-indent-function 'lisp-comment-indent)
 156   (make-local-variable 'parse-sexp-ignore-comments)
 157   (setq parse-sexp-ignore-comments t)
 158   (make-local-variable 'lisp-indent-function)
 159   (set lisp-indent-function 'scheme-indent-function)
 160   (setq mode-line-process '("" scheme-mode-line-process))
 161   (set (make-local-variable 'imenu-case-fold-search) t)
 162   (setq imenu-generic-expression scheme-imenu-generic-expression)
 163   (set (make-local-variable 'imenu-syntax-alist)
 164         '(("+-*/.<>=?!$%_&~^:" . "w")))
 165   (make-local-variable 'font-lock-defaults)
 166   (setq font-lock-defaults
 167         '((scheme-font-lock-keywords
 168            scheme-font-lock-keywords-1 scheme-font-lock-keywords-2)
 169           nil t (("+-*/.<>=!?$%_&~^:" . "w")) beginning-of-defun
 170           (font-lock-mark-block-function . mark-defun))))
 171
 172 (defvar scheme-mode-line-process "")
 173
 174 (defvar scheme-mode-map nil
 175   "Keymap for Scheme mode.
 176 All commands in `lisp-mode-shared-map' are inherited by this map.")
 177
 178 (unless scheme-mode-map
 179   (let ((map (make-sparse-keymap "Scheme")))
 180     (setq scheme-mode-map (make-sparse-keymap))
 181     (set-keymap-parent scheme-mode-map lisp-mode-shared-map)
 182     (define-key scheme-mode-map [menu-bar] (make-sparse-keymap))
 183     (define-key scheme-mode-map [menu-bar scheme]
 184       (cons "Scheme" map))
 185     (define-key map [run-scheme] '("Run Inferior Scheme" . run-scheme))
 186     (define-key map [uncomment-region]
 187       '("Uncomment Out Region" . (lambda (beg end)
 188                                    (interactive "r")
 189                                    (comment-region beg end '(4)))))
 190     (define-key map [comment-region] '("Comment Out Region" . comment-region))
 191     (define-key map [indent-region] '("Indent Region" . indent-region))
 192     (define-key map [indent-line] '("Indent Line" . lisp-indent-line))
 193     (put 'comment-region 'menu-enable 'mark-active)
 194     (put 'uncomment-region 'menu-enable 'mark-active)
 195     (put 'indent-region 'menu-enable 'mark-active)))
 196
 197 ;; Used by cmuscheme
 198 (defun scheme-mode-commands (map)
 199   ;;(define-key map "\t" 'indent-for-tab-command) ; default
 200   (define-key map "\177" 'backward-delete-char-untabify)
 201   (define-key map "\e\C-q" 'indent-sexp))
 202 \f
 203 ;;;###autoload
 204 (defun scheme-mode ()
 205   "Major mode for editing Scheme code.
 206 Editing commands are similar to those of `lisp-mode'.
 207
 208 In addition, if an inferior Scheme process is running, some additional
 209 commands will be defined, for evaluating expressions and controlling
 210 the interpreter, and the state of the process will be displayed in the
 211 modeline of all Scheme buffers.  The names of commands that interact
 212 with the Scheme process start with \"xscheme-\" if you use the MIT
 213 Scheme-specific `xscheme' package; for more information see the
 214 documentation for `xscheme-interaction-mode'.  Use \\[run-scheme] to
 215 start an inferior Scheme using the more general `cmuscheme' package.
 216
 217 Commands:
 218 Delete converts tabs to spaces as it moves back.
 219 Blank lines separate paragraphs.  Semicolons start comments.
 220 \\{scheme-mode-map}
 221 Entry to this mode calls the value of `scheme-mode-hook'
 222 if that value is non-nil."
 223   (interactive)
 224   (kill-all-local-variables)
 225   (scheme-mode-initialize)
 226   (scheme-mode-variables)
 227   (run-hooks 'scheme-mode-hook))
 228
 229 (defun scheme-mode-initialize ()
 230   (use-local-map scheme-mode-map)
 231   (setq major-mode 'scheme-mode)
 232   (setq mode-name "Scheme"))
 233
 234 (defgroup scheme nil
 235   "Editing Scheme code"
 236   :group 'lisp)
 237
 238 (defcustom scheme-mit-dialect t
 239   "If non-nil, scheme mode is specialized for MIT Scheme.
 240 Set this to nil if you normally use another dialect."
 241   :type 'boolean
 242   :group 'scheme)
 243
 244 (defcustom dsssl-sgml-declaration
 245   "<!DOCTYPE style-sheet PUBLIC \"-//James Clark//DTD DSSSL Style Sheet//EN\">
 246 "
 247   "*An SGML declaration for the DSSSL file.
 248 If it is defined as a string this will be inserted into an empty buffer
 249 which is in `dsssl-mode'.  It is typically James Clark's style-sheet
 250 doctype, as required for Jade."
 251   :type '(choice (string :tag "Specified string")
 252                  (const :tag "None" :value nil))
 253   :group 'scheme)
 254
 255 (defcustom scheme-mode-hook nil
 256   "Normal hook run when entering `scheme-mode'.
 257 See `run-hooks'."
 258   :type 'hook
 259   :group 'scheme)
 260
 261 (defcustom dsssl-mode-hook nil
 262   "Normal hook run when entering `dsssl-mode'.
 263 See `run-hooks'."
 264   :type 'hook
 265   :group 'scheme)
 266
 267 ;; This is shared by cmuscheme and xscheme.
 268 (defcustom scheme-program-name "scheme"
 269   "*Program invoked by the `run-scheme' command."
 270   :type 'string
 271   :group 'scheme)
 272
 273 (defvar dsssl-imenu-generic-expression
 274   ;; Perhaps this should also look for the style-sheet DTD tags.  I'm
 275   ;; not sure it's the best way to organize it; perhaps one type
 276   ;; should be at the first level, though you don't see this anyhow if
 277   ;; it gets split up.
 278   '(("Defines"
 279      "^(define\\s-+(?\\(\\sw+\\)" 1)
 280     ("Modes"
 281      "^\\s-*(mode\\s-+\\(\\(\\sw\\|\\s-\\)+\\)" 1)
 282     ("Elements"
 283      ;; (element foo ...) or (element (foo bar ...) ...)
 284      ;; Fixme: Perhaps it should do `root'.
 285      "^\\s-*(element\\s-+(?\\(\\(\\sw\\|\\s-\\)+\\))?" 1)
 286     ("Declarations"
 287      "^(declare\\(-\\sw+\\)+\\>\\s-+\\(\\sw+\\)" 2))
 288   "Imenu generic expression for DSSSL mode.  See `imenu-generic-expression'.")
 289
 290 (defconst scheme-font-lock-keywords-1
 291   (eval-when-compile
 292     (list
 293      ;;
 294      ;; Declarations.  Hannes Haug <hannes.haug@student.uni-tuebingen.de> says
 295      ;; this works for SOS, STklos, SCOOPS, Meroon and Tiny CLOS.
 296      (list (concat "(\\(define\\*?\\("
 297                    ;; Function names.
 298                    "\\(\\|-public\\|-method\\|-generic\\(-procedure\\)?\\)\\|"
 299                    ;; Macro names, as variable names.  A bit dubious, this.
 300                    "\\(-syntax\\|-macro\\)\\|"
 301                    ;; Class names.
 302                    "-class"
 303                    ;; Guile modules.
 304                    "\\|-module"
 305                    "\\)\\)\\>"
 306                    ;; Any whitespace and declared object.
 307                    "[ \t]*(?"
 308                    "\\(\\sw+\\)?")
 309            '(1 font-lock-keyword-face)
 310            '(6 (cond ((match-beginning 3) font-lock-function-name-face)
 311                      ((match-beginning 5) font-lock-variable-name-face)
 312                      (t font-lock-type-face))
 313                nil t))
 314      ))
 315   "Subdued expressions to highlight in Scheme modes.")
 316
 317 (defconst scheme-font-lock-keywords-2
 318   (append scheme-font-lock-keywords-1
 319    (eval-when-compile
 320      (list
 321       ;;
 322       ;; Control structures.
 323       (cons
 324        (concat
 325         "(" (regexp-opt
 326              '("begin" "call-with-current-continuation" "call/cc"
 327                "call-with-input-file" "call-with-output-file" "case" "cond"
 328                "do" "else" "for-each" "if" "lambda"
 329                "let" "let*" "let-syntax" "letrec" "letrec-syntax"
 330                ;; Hannes Haug <hannes.haug@student.uni-tuebingen.de> wants:
 331                "and" "or" "delay"
 332                ;; Stefan Monnier <stefan.monnier@epfl.ch> says don't bother:
 333                ;;"quasiquote" "quote" "unquote" "unquote-splicing"
 334                "map" "syntax" "syntax-rules") t)
 335         "\\>") 1)
 336       ;;
 337       ;; David Fox <fox@graphics.cs.nyu.edu> for SOS/STklos class specifiers.
 338       '("\\<<\\sw+>\\>" . font-lock-type-face)
 339       ;;
 340       ;; Scheme `:' keywords as builtins.
 341       '("\\<:\\sw+\\>" . font-lock-builtin-face)
 342       )))
 343   "Gaudy expressions to highlight in Scheme modes.")
 344
 345 (defvar scheme-font-lock-keywords scheme-font-lock-keywords-1
 346   "Default expressions to highlight in Scheme modes.")
 347
 348 ;;;###autoload
 349 (defun dsssl-mode ()
 350   "Major mode for editing DSSSL code.
 351 Editing commands are similar to those of `lisp-mode'.
 352
 353 Commands:
 354 Delete converts tabs to spaces as it moves back.
 355 Blank lines separate paragraphs.  Semicolons start comments.
 356 \\{scheme-mode-map}
 357 Entering this mode runs the hooks `scheme-mode-hook' and then
 358 `dsssl-mode-hook' and inserts the value of `dsssl-sgml-declaration' if
 359 that variable's value is a string."
 360   (interactive)
 361   (kill-all-local-variables)
 362   (use-local-map scheme-mode-map)
 363   (scheme-mode-initialize)
 364   (make-local-variable 'page-delimiter)
 365   (setq page-delimiter "^;;;" ; ^L not valid SGML char
 366         major-mode 'dsssl-mode
 367         mode-name "DSSSL")
 368   ;; Insert a suitable SGML declaration into an empty buffer.
 369   (and (zerop (buffer-size))
 370        (stringp dsssl-sgml-declaration)
 371        (not buffer-read-only)
 372        (insert dsssl-sgml-declaration))
 373   (scheme-mode-variables)
 374   (setq font-lock-defaults '(dsssl-font-lock-keywords
 375                              nil t (("+-*/.<>=?$%_&~^:" . "w"))
 376                              beginning-of-defun
 377                              (font-lock-mark-block-function . mark-defun)))
 378   (set (make-local-variable 'imenu-case-fold-search) nil)
 379   (setq imenu-generic-expression dsssl-imenu-generic-expression)
 380   (set (make-local-variable 'imenu-syntax-alist)
 381        '(("+-*/.<>=?$%_&~^:" . "w")))
 382   (run-hooks 'scheme-mode-hook)
 383   (run-hooks 'dsssl-mode-hook))
 384
 385 ;; Extra syntax for DSSSL.  This isn't separated from Scheme, but
 386 ;; shouldn't cause much trouble in scheme-mode.
 387 (put 'element 'scheme-indent-function 1)
 388 (put 'mode 'scheme-indent-function 1)
 389 (put 'with-mode 'scheme-indent-function 1)
 390 (put 'make 'scheme-indent-function 1)
 391 (put 'style 'scheme-indent-function 1)
 392 (put 'root 'scheme-indent-function 1)
 393
 394 (defvar dsssl-font-lock-keywords
 395   (eval-when-compile
 396     (list
 397      ;; Similar to Scheme
 398      (list "(\\(define\\(-\\w+\\)?\\)\\>[       ]*\\\((?\\)\\(\\sw+\\)\\>"
 399            '(1 font-lock-keyword-face)
 400            '(4 font-lock-function-name-face))
 401      (cons
 402       (concat "(\\("
 403               ;; (make-regexp '("case" "cond" "else" "if" "lambda"
 404               ;; "let" "let*" "letrec" "and" "or" "map" "with-mode"))
 405               "and\\|c\\(ase\\|ond\\)\\|else\\|if\\|"
 406               "l\\(ambda\\|et\\(\\|*\\|rec\\)\\)\\|map\\|or\\|with-mode"
 407               "\\)\\>")
 408       1)
 409      ;; DSSSL syntax
 410      '("(\\(element\\|mode\\|declare-\\w+\\)\\>[        ]*\\(\\sw+\\)"
 411        (1 font-lock-keyword-face)
 412        (2 font-lock-type-face))
 413      '("(\\(element\\)\\>[      ]*(\\(\\S)+\\))"
 414        (1 font-lock-keyword-face)
 415        (2 font-lock-type-face))
 416      '("\\<\\sw+:\\>" . font-lock-constant-face) ; trailing `:' c.f. scheme
 417      ;; SGML markup (from sgml-mode) :
 418      '("<\\([!?][-a-z0-9]+\\)" 1 font-lock-keyword-face)
 419      '("<\\(/?[-a-z0-9]+\\)" 1 font-lock-function-name-face)))
 420   "Default expressions to highlight in DSSSL mode.")
 421
 422 \f
 423 (defvar calculate-lisp-indent-last-sexp)
 424
 425 ;; Copied from lisp-indent-function, but with gets of
 426 ;; scheme-indent-{function,hook}.
 427 (defun scheme-indent-function (indent-point state)
 428   (let ((normal-indent (current-column)))
 429     (goto-char (1+ (elt state 1)))
 430     (parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t)
 431     (if (and (elt state 2)
 432              (not (looking-at "\\sw\\|\\s_")))
 433         ;; car of form doesn't seem to be a a symbol
 434         (progn
 435           (if (not (> (save-excursion (forward-line 1) (point))
 436                       calculate-lisp-indent-last-sexp))
 437               (progn (goto-char calculate-lisp-indent-last-sexp)
 438                      (beginning-of-line)
 439                      (parse-partial-sexp (point)
 440                                          calculate-lisp-indent-last-sexp 0 t)))
 441           ;; Indent under the list or under the first sexp on the same
 442           ;; line as calculate-lisp-indent-last-sexp.  Note that first
 443           ;; thing on that line has to be complete sexp since we are
 444           ;; inside the innermost containing sexp.
 445           (backward-prefix-chars)
 446           (current-column))
 447       (let ((function (buffer-substring (point)
 448                                         (progn (forward-sexp 1) (point))))
 449             method)
 450         (setq method (or (get (intern-soft function) 'scheme-indent-function)
 451                          (get (intern-soft function) 'scheme-indent-hook)))
 452         (cond ((or (eq method 'defun)
 453                    (and (null method)
 454                         (> (length function) 3)
 455                         (string-match "\\`def" function)))
 456                (lisp-indent-defform state indent-point))
 457               ((integerp method)
 458                (lisp-indent-specform method state
 459                                      indent-point normal-indent))
 460               (method
 461                 (funcall method state indent-point normal-indent)))))))
 462
 463 \f
 464 ;;; Let is different in Scheme
 465
 466 (defun would-be-symbol (string)
 467   (not (string-equal (substring string 0 1) "(")))
 468
 469 (defun next-sexp-as-string ()
 470   ;; Assumes that it is protected by a save-excursion
 471   (forward-sexp 1)
 472   (let ((the-end (point)))
 473     (backward-sexp 1)
 474     (buffer-substring (point) the-end)))
 475
 476 ;; This is correct but too slow.
 477 ;; The one below works almost always.
 478 ;;(defun scheme-let-indent (state indent-point)
 479 ;;  (if (would-be-symbol (next-sexp-as-string))
 480 ;;      (scheme-indent-specform 2 state indent-point)
 481 ;;      (scheme-indent-specform 1 state indent-point)))
 482
 483 (defun scheme-let-indent (state indent-point normal-indent)
 484   (skip-chars-forward " \t")
 485   (if (looking-at "[-a-zA-Z0-9+*/?!@$%^&_:~]")
 486       (lisp-indent-specform 2 state indent-point normal-indent)
 487     (lisp-indent-specform 1 state indent-point normal-indent)))
 488
 489 ;; (put 'begin 'scheme-indent-function 0), say, causes begin to be indented
 490 ;; like defun if the first form is placed on the next line, otherwise
 491 ;; it is indented like any other form (i.e. forms line up under first).
 492
 493 (put 'begin 'scheme-indent-function 0)
 494 (put 'case 'scheme-indent-function 1)
 495 (put 'delay 'scheme-indent-function 0)
 496 (put 'do 'scheme-indent-function 2)
 497 (put 'lambda 'scheme-indent-function 1)
 498 (put 'let 'scheme-indent-function 'scheme-let-indent)
 499 (put 'let* 'scheme-indent-function 1)
 500 (put 'letrec 'scheme-indent-function 1)
 501 (put 'sequence 'scheme-indent-function 0) ; SICP, not r4rs
 502 (put 'let-syntax 'scheme-indent-function 1)
 503 (put 'letrec-syntax 'scheme-indent-function 1)
 504 (put 'syntax-rules 'scheme-indent-function 1)
 505
 506
 507 (put 'call-with-input-file 'scheme-indent-function 1)
 508 (put 'with-input-from-file 'scheme-indent-function 1)
 509 (put 'with-input-from-port 'scheme-indent-function 1)
 510 (put 'call-with-output-file 'scheme-indent-function 1)
 511 (put 'with-output-to-file 'scheme-indent-function 1)
 512 (put 'with-output-to-port 'scheme-indent-function 1)
 513 (put 'call-with-values 'scheme-indent-function 1) ; r5rs?
 514 (put 'dynamic-wind 'scheme-indent-function 3) ; r5rs?
 515 \f
 516 ;;;; MIT Scheme specific indentation.
 517
 518 (if scheme-mit-dialect
 519     (progn
 520       (put 'fluid-let 'scheme-indent-function 1)
 521       (put 'in-package 'scheme-indent-function 1)
 522       (put 'local-declare 'scheme-indent-function 1)
 523       (put 'macro 'scheme-indent-function 1)
 524       (put 'make-environment 'scheme-indent-function 0)
 525       (put 'named-lambda 'scheme-indent-function 1)
 526       (put 'using-syntax 'scheme-indent-function 1)
 527
 528       (put 'with-input-from-string 'scheme-indent-function 1)
 529       (put 'with-output-to-string 'scheme-indent-function 0)
 530       (put 'with-values 'scheme-indent-function 1)
 531
 532       (put 'syntax-table-define 'scheme-indent-function 2)
 533       (put 'list-transform-positive 'scheme-indent-function 1)
 534       (put 'list-transform-negative 'scheme-indent-function 1)
 535       (put 'list-search-positive 'scheme-indent-function 1)
 536       (put 'list-search-negative 'scheme-indent-function 1)
 537
 538       (put 'access-components 'scheme-indent-function 1)
 539       (put 'assignment-components 'scheme-indent-function 1)
 540       (put 'combination-components 'scheme-indent-function 1)
 541       (put 'comment-components 'scheme-indent-function 1)
 542       (put 'conditional-components 'scheme-indent-function 1)
 543       (put 'disjunction-components 'scheme-indent-function 1)
 544       (put 'declaration-components 'scheme-indent-function 1)
 545       (put 'definition-components 'scheme-indent-function 1)
 546       (put 'delay-components 'scheme-indent-function 1)
 547       (put 'in-package-components 'scheme-indent-function 1)
 548       (put 'lambda-components 'scheme-indent-function 1)
 549       (put 'lambda-components* 'scheme-indent-function 1)
 550       (put 'lambda-components** 'scheme-indent-function 1)
 551       (put 'open-block-components 'scheme-indent-function 1)
 552       (put 'pathname-components 'scheme-indent-function 1)
 553       (put 'procedure-components 'scheme-indent-function 1)
 554       (put 'sequence-components 'scheme-indent-function 1)
 555       (put 'unassigned\?-components 'scheme-indent-function 1)
 556       (put 'unbound\?-components 'scheme-indent-function 1)
 557       (put 'variable-components 'scheme-indent-function 1)))
 558
 559 (provide 'scheme)
 560
 561 ;;; scheme.el ends here