lisp-mode.el 46.8 KB
Newer Older
1
;;; lisp-mode.el --- Lisp mode, and its idiosyncratic commands
Eric S. Raymond's avatar
Eric S. Raymond committed
2

3
;; Copyright (C) 1985, 1986, 1999, 2000, 2001, 2003, 2004, 2005
4
;;           Free Software Foundation, Inc.
Eric S. Raymond's avatar
Eric S. Raymond committed
5

Eric S. Raymond's avatar
Eric S. Raymond committed
6
;; Maintainer: FSF
Eric S. Raymond's avatar
Eric S. Raymond committed
7
;; Keywords: lisp, languages
Eric S. Raymond's avatar
Eric S. Raymond committed
8

Brian Preble's avatar
Brian Preble committed
9 10 11 12
;; This file is part of GNU Emacs.

;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
Eric S. Raymond's avatar
Eric S. Raymond committed
13
;; the Free Software Foundation; either version 2, or (at your option)
Brian Preble's avatar
Brian Preble committed
14 15 16 17 18 19 20 21
;; any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
Erik Naggum's avatar
Erik Naggum committed
22 23 24
;; along with GNU Emacs; see the file COPYING.  If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
Brian Preble's avatar
Brian Preble committed
25

26 27 28
;;; Commentary:

;; The base major mode for editing Lisp code (used also for Emacs Lisp).
Dave Love's avatar
Dave Love committed
29
;; This mode is documented in the Emacs manual.
30 31 32

;;; Code:

Dave Love's avatar
Dave Love committed
33
(defvar lisp-mode-abbrev-table nil)
Brian Preble's avatar
Brian Preble committed
34

Dave Love's avatar
Dave Love committed
35 36
(defvar emacs-lisp-mode-syntax-table
  (let ((table (make-syntax-table)))
Brian Preble's avatar
Brian Preble committed
37 38
    (let ((i 0))
      (while (< i ?0)
Dave Love's avatar
Dave Love committed
39
	(modify-syntax-entry i "_   " table)
Brian Preble's avatar
Brian Preble committed
40 41 42
	(setq i (1+ i)))
      (setq i (1+ ?9))
      (while (< i ?A)
Dave Love's avatar
Dave Love committed
43
	(modify-syntax-entry i "_   " table)
Brian Preble's avatar
Brian Preble committed
44 45 46
	(setq i (1+ i)))
      (setq i (1+ ?Z))
      (while (< i ?a)
Dave Love's avatar
Dave Love committed
47
	(modify-syntax-entry i "_   " table)
Brian Preble's avatar
Brian Preble committed
48 49 50
	(setq i (1+ i)))
      (setq i (1+ ?z))
      (while (< i 128)
Dave Love's avatar
Dave Love committed
51
	(modify-syntax-entry i "_   " table)
Brian Preble's avatar
Brian Preble committed
52
	(setq i (1+ i)))
Dave Love's avatar
Dave Love committed
53 54 55 56
      (modify-syntax-entry ?  "    " table)
      (modify-syntax-entry ?\t "    " table)
      (modify-syntax-entry ?\f "    " table)
      (modify-syntax-entry ?\n ">   " table)
57
      ;; Give CR the same syntax as newline, for selective-display.
Dave Love's avatar
Dave Love committed
58 59 60 61 62
      (modify-syntax-entry ?\^m ">   " table)
      (modify-syntax-entry ?\; "<   " table)
      (modify-syntax-entry ?` "'   " table)
      (modify-syntax-entry ?' "'   " table)
      (modify-syntax-entry ?, "'   " table)
63
      (modify-syntax-entry ?@ "'   " table)
Brian Preble's avatar
Brian Preble committed
64
      ;; Used to be singlequote; changed for flonums.
Dave Love's avatar
Dave Love committed
65 66 67 68 69 70 71
      (modify-syntax-entry ?. "_   " table)
      (modify-syntax-entry ?# "'   " table)
      (modify-syntax-entry ?\" "\"    " table)
      (modify-syntax-entry ?\\ "\\   " table)
      (modify-syntax-entry ?\( "()  " table)
      (modify-syntax-entry ?\) ")(  " table)
      (modify-syntax-entry ?\[ "(]  " table)
72
      (modify-syntax-entry ?\] ")[  " table))
Dave Love's avatar
Dave Love committed
73 74 75 76 77 78 79
    table))

(defvar lisp-mode-syntax-table
  (let ((table (copy-syntax-table emacs-lisp-mode-syntax-table)))
    (modify-syntax-entry ?\[ "_   " table)
    (modify-syntax-entry ?\] "_   " table)
    (modify-syntax-entry ?# "' 14bn" table)
80
    (modify-syntax-entry ?| "\" 23b" table)
Dave Love's avatar
Dave Love committed
81
    table))
Jim Blandy's avatar
Jim Blandy committed
82

Brian Preble's avatar
Brian Preble committed
83 84
(define-abbrev-table 'lisp-mode-abbrev-table ())

85
(defvar lisp-imenu-generic-expression
Dave Love's avatar
Dave Love committed
86
  (list
87
   (list nil
88 89 90 91 92 93 94 95 96
	 (purecopy (concat "^\\s-*("
			   (eval-when-compile
			     (regexp-opt
			      '("defun" "defun*" "defsubst" "defmacro"
				"defadvice" "define-skeleton"
				"define-minor-mode" "define-derived-mode"
				"define-compiler-macro" "define-modify-macro"
				"defsetf" "define-setf-expander"
				"define-method-combination"
97 98
				"defgeneric" "defmethod") t))
			   "\\s-+\\(\\sw\\(\\sw\\|\\s_\\)+\\)"))
99
	 2)
100
   (list (purecopy "Variables")
101 102 103 104
	 (purecopy (concat "^\\s-*("
			   (eval-when-compile
			     (regexp-opt
			      '("defvar" "defconst" "defconstant" "defcustom"
105 106
				"defparameter" "define-symbol-macro") t))
			   "\\s-+\\(\\sw\\(\\sw\\|\\s_\\)+\\)"))
107
	 2)
108
   (list (purecopy "Types")
109 110 111
	 (purecopy (concat "^\\s-*("
			   (eval-when-compile
			     (regexp-opt
112 113 114
			      '("defgroup" "deftheme" "deftype" "defstruct"
				"defclass" "define-condition" "define-widget"
				"defface" "defpackage") t))
115
			   "\\s-+'?\\(\\sw\\(\\sw\\|\\s_\\)+\\)"))
116 117 118 119
	 2))

  "Imenu generic expression for Lisp mode.  See `imenu-generic-expression'.")

120 121 122 123 124 125
;; This was originally in autoload.el and is still used there.
(put 'autoload 'doc-string-elt 3)
(put 'defun    'doc-string-elt 3)
(put 'defun*    'doc-string-elt 3)
(put 'defvar   'doc-string-elt 3)
(put 'defcustom 'doc-string-elt 3)
126
(put 'deftheme 'doc-string-elt 2)
127 128
(put 'defconst 'doc-string-elt 3)
(put 'defmacro 'doc-string-elt 3)
129
(put 'defmacro* 'doc-string-elt 3)
130 131 132
(put 'defsubst 'doc-string-elt 3)
(put 'define-skeleton 'doc-string-elt 2)
(put 'define-derived-mode 'doc-string-elt 4)
133
(put 'define-compilation-mode 'doc-string-elt 3)
134 135 136 137 138
(put 'easy-mmode-define-minor-mode 'doc-string-elt 2)
(put 'define-minor-mode 'doc-string-elt 2)
(put 'define-generic-mode 'doc-string-elt 7)
;; define-global-mode has no explicit docstring.
(put 'easy-mmode-define-global-mode 'doc-string-elt 0)
139
(put 'define-ibuffer-filter 'doc-string-elt 2)
140
(put 'define-ibuffer-op 'doc-string-elt 3)
141
(put 'define-ibuffer-sorter 'doc-string-elt 2)
142 143 144 145 146 147 148 149 150

(defun lisp-font-lock-syntactic-face-function (state)
  (if (nth 3 state)
      (if (and (eq (nth 0 state) 1)
	       ;; This might be a docstring.
	       (save-excursion
		 (let ((n 0))
		   (goto-char (nth 8 state))
		   (condition-case nil
151 152
		       (while (and (not (bobp))
				   (progn (backward-sexp 1) (setq n (1+ n)))))
153 154 155 156 157 158 159 160 161 162 163 164 165
		     (scan-error nil))
		   (when (> n 0)
		     (let ((sym (intern-soft
				 (buffer-substring
				  (point) (progn (forward-sexp 1) (point))))))
		       (eq n (or (get sym 'doc-string-elt) 3)))))))
	  font-lock-doc-face
	font-lock-string-face)
    font-lock-comment-face))

;; The LISP-SYNTAX argument is used by code in inf-lisp.el and is
;; (uselessly) passed from pp.el, chistory.el, gnus-kill.el and score-mode.el
(defun lisp-mode-variables (&optional lisp-syntax)
166 167
  (when lisp-syntax
    (set-syntax-table lisp-mode-syntax-table))
Brian Preble's avatar
Brian Preble committed
168 169 170
  (setq local-abbrev-table lisp-mode-abbrev-table)
  (make-local-variable 'paragraph-ignore-fill-prefix)
  (setq paragraph-ignore-fill-prefix t)
171 172
  (make-local-variable 'fill-paragraph-function)
  (setq fill-paragraph-function 'lisp-fill-paragraph)
173 174 175
  ;; Adaptive fill mode gets in the way of auto-fill,
  ;; and should make no difference for explicit fill
  ;; because lisp-fill-paragraph should do the job.
176 177
  ;;  I believe that newcomment's auto-fill code properly deals with it  -stef
  ;;(set (make-local-variable 'adaptive-fill-mode) nil)
Brian Preble's avatar
Brian Preble committed
178 179 180 181 182 183
  (make-local-variable 'indent-line-function)
  (setq indent-line-function 'lisp-indent-line)
  (make-local-variable 'indent-region-function)
  (setq indent-region-function 'lisp-indent-region)
  (make-local-variable 'parse-sexp-ignore-comments)
  (setq parse-sexp-ignore-comments t)
184
  (make-local-variable 'outline-regexp)
185
  (setq outline-regexp ";;;;* [^ \t\n]\\|(")
Gerd Moellmann's avatar
Gerd Moellmann committed
186 187
  (make-local-variable 'outline-level)
  (setq outline-level 'lisp-outline-level)
Brian Preble's avatar
Brian Preble committed
188 189 190
  (make-local-variable 'comment-start)
  (setq comment-start ";")
  (make-local-variable 'comment-start-skip)
191 192 193
  ;; Look within the line for a ; following an even number of backslashes
  ;; after either a non-backslash or the line beginning.
  (setq comment-start-skip "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\);+ *")
194 195
  (make-local-variable 'comment-add)
  (setq comment-add 1)			;default to `;;' in comment-region
Brian Preble's avatar
Brian Preble committed
196 197
  (make-local-variable 'comment-column)
  (setq comment-column 40)
198 199
  ;; Don't get confused by `;' in doc strings when paragraph-filling.
  (set (make-local-variable 'comment-use-global-state) t)
200
  (make-local-variable 'imenu-generic-expression)
201 202
  (setq imenu-generic-expression lisp-imenu-generic-expression)
  (make-local-variable 'multibyte-syntax-as-symbol)
Stefan Monnier's avatar
Stefan Monnier committed
203
  (setq multibyte-syntax-as-symbol t)
204
  (set (make-local-variable 'syntax-begin-function) 'beginning-of-defun)
Stefan Monnier's avatar
Stefan Monnier committed
205 206 207
  (setq font-lock-defaults
	'((lisp-font-lock-keywords
	   lisp-font-lock-keywords-1 lisp-font-lock-keywords-2)
208
	  nil nil (("+-*/.<>=!?$%_&~^:" . "w")) nil
209 210 211
	  (font-lock-mark-block-function . mark-defun)
	  (font-lock-syntactic-face-function
	   . lisp-font-lock-syntactic-face-function))))
Gerd Moellmann's avatar
Gerd Moellmann committed
212 213 214

(defun lisp-outline-level ()
  "Lisp mode `outline-level' function."
215
  (if (looking-at "(\\|;;;###autoload")
Gerd Moellmann's avatar
Gerd Moellmann committed
216 217 218 219
      1000
    (looking-at outline-regexp)
    (- (match-end 0) (match-beginning 0))))

220

Stefan Monnier's avatar
Stefan Monnier committed
221 222
(defvar lisp-mode-shared-map
  (let ((map (make-sparse-keymap)))
223
    (define-key map "\t" 'lisp-indent-line)
Stefan Monnier's avatar
Stefan Monnier committed
224 225
    (define-key map "\e\C-q" 'indent-sexp)
    (define-key map "\177" 'backward-delete-char-untabify)
226 227 228 229
    ;; This gets in the way when viewing a Lisp file in view-mode.  As
    ;; long as [backspace] is mapped into DEL via the
    ;; function-key-map, this should remain disabled!!
    ;;;(define-key map [backspace] 'backward-delete-char-untabify)
Stefan Monnier's avatar
Stefan Monnier committed
230
    map)
Brian Preble's avatar
Brian Preble committed
231 232 233 234
  "Keymap for commands shared by all sorts of Lisp modes.")

(defvar emacs-lisp-mode-map ()
  "Keymap for Emacs Lisp mode.
235
All commands in `lisp-mode-shared-map' are inherited by this map.")
Brian Preble's avatar
Brian Preble committed
236 237 238

(if emacs-lisp-mode-map
    ()
239
  (let ((map (make-sparse-keymap "Emacs-Lisp")))
240
    (setq emacs-lisp-mode-map (make-sparse-keymap))
241
    (set-keymap-parent emacs-lisp-mode-map lisp-mode-shared-map)
242 243
    (define-key emacs-lisp-mode-map "\e\t" 'lisp-complete-symbol)
    (define-key emacs-lisp-mode-map "\e\C-x" 'eval-defun)
244
    (define-key emacs-lisp-mode-map "\e\C-q" 'indent-pp-sexp)
245 246 247 248 249 250 251
    (define-key emacs-lisp-mode-map [menu-bar] (make-sparse-keymap))
    (define-key emacs-lisp-mode-map [menu-bar emacs-lisp]
      (cons "Emacs-Lisp" map))
    (define-key map [edebug-defun]
      '("Instrument Function for Debugging" . edebug-defun))
    (define-key map [byte-recompile]
      '("Byte-recompile Directory..." . byte-recompile-directory))
252
    (define-key map [emacs-byte-compile-and-load]
253
      '("Byte-compile And Load" . emacs-lisp-byte-compile-and-load))
254 255 256 257 258 259 260 261 262
    (define-key map [byte-compile]
      '("Byte-compile This File" . emacs-lisp-byte-compile))
    (define-key map [separator-eval] '("--"))
    (define-key map [eval-buffer] '("Evaluate Buffer" . eval-current-buffer))
    (define-key map [eval-region] '("Evaluate Region" . eval-region))
    (define-key map [eval-sexp] '("Evaluate Last S-expression" . eval-last-sexp))
    (define-key map [separator-format] '("--"))
    (define-key map [comment-region] '("Comment Out Region" . comment-region))
    (define-key map [indent-region] '("Indent Region" . indent-region))
263 264 265 266
    (define-key map [indent-line] '("Indent Line" . lisp-indent-line))
    (put 'eval-region 'menu-enable 'mark-active)
    (put 'comment-region 'menu-enable 'mark-active)
    (put 'indent-region 'menu-enable 'mark-active)))
267 268 269 270 271 272

(defun emacs-lisp-byte-compile ()
  "Byte compile the file containing the current buffer."
  (interactive)
  (if buffer-file-name
      (byte-compile-file buffer-file-name)
273 274
    (error "The buffer must be saved in a file first")))

275
(defun emacs-lisp-byte-compile-and-load ()
276 277 278 279 280 281
  "Byte-compile the current file (if it has changed), then load compiled code."
  (interactive)
  (or buffer-file-name
      (error "The buffer must be saved in a file first"))
  (require 'bytecomp)
  ;; Recompile if file or buffer has changed since last compilation.
282
  (if (and (buffer-modified-p)
Dave Love's avatar
Dave Love committed
283
	   (y-or-n-p (format "Save buffer %s first? " (buffer-name))))
284 285 286 287 288
      (save-buffer))
  (let ((compiled-file-name (byte-compile-dest-file buffer-file-name)))
    (if (file-newer-than-file-p compiled-file-name buffer-file-name)
	(load-file compiled-file-name)
      (byte-compile-file buffer-file-name t))))
Brian Preble's avatar
Brian Preble committed
289

290 291
(defcustom emacs-lisp-mode-hook nil
  "Hook run when entering Emacs Lisp mode."
Dave Love's avatar
Dave Love committed
292
  :options '(turn-on-eldoc-mode imenu-add-menubar-index checkdoc-minor-mode)
293 294 295 296 297 298 299 300 301 302 303 304 305 306 307
  :type 'hook
  :group 'lisp)

(defcustom lisp-mode-hook nil
  "Hook run when entering Lisp mode."
  :options '(imenu-add-menubar-index)
  :type 'hook
  :group 'lisp)

(defcustom lisp-interaction-mode-hook nil
  "Hook run when entering Lisp Interaction mode."
  :options '(turn-on-eldoc-mode)
  :type 'hook
  :group 'lisp)

308
(defun emacs-lisp-mode ()
Brian Preble's avatar
Brian Preble committed
309 310 311 312 313 314 315
  "Major mode for editing Lisp code to run in Emacs.
Commands:
Delete converts tabs to spaces as it moves back.
Blank lines separate paragraphs.  Semicolons start comments.
\\{emacs-lisp-mode-map}
Entry to this mode calls the value of `emacs-lisp-mode-hook'
if that value is non-nil."
316 317 318 319 320 321
  (interactive)
  (kill-all-local-variables)
  (use-local-map emacs-lisp-mode-map)
  (set-syntax-table emacs-lisp-mode-syntax-table)
  (setq major-mode 'emacs-lisp-mode)
  (setq mode-name "Emacs-Lisp")
322
  (lisp-mode-variables)
323
  (setq imenu-case-fold-search nil)
324
  (run-mode-hooks 'emacs-lisp-mode-hook))
325
(put 'emacs-lisp-mode 'custom-mode-group 'lisp)
Brian Preble's avatar
Brian Preble committed
326

Dave Love's avatar
Dave Love committed
327 328
(defvar lisp-mode-map
  (let ((map (make-sparse-keymap)))
329
    (set-keymap-parent map lisp-mode-shared-map)
Dave Love's avatar
Dave Love committed
330 331 332
    (define-key map "\e\C-x" 'lisp-eval-defun)
    (define-key map "\C-c\C-z" 'run-lisp)
    map)
Brian Preble's avatar
Brian Preble committed
333
  "Keymap for ordinary Lisp mode.
334
All commands in `lisp-mode-shared-map' are inherited by this map.")
Brian Preble's avatar
Brian Preble committed
335

336
(defun lisp-mode ()
Brian Preble's avatar
Brian Preble committed
337 338 339 340 341 342 343 344 345 346
  "Major mode for editing Lisp code for Lisps other than GNU Emacs Lisp.
Commands:
Delete converts tabs to spaces as it moves back.
Blank lines separate paragraphs.  Semicolons start comments.
\\{lisp-mode-map}
Note that `run-lisp' may be used either to start an inferior Lisp job
or to switch back to an existing one.

Entry to this mode calls the value of `lisp-mode-hook'
if that value is non-nil."
347 348 349 350 351
  (interactive)
  (kill-all-local-variables)
  (use-local-map lisp-mode-map)
  (setq major-mode 'lisp-mode)
  (setq mode-name "Lisp")
352
  (lisp-mode-variables)
353 354
  (make-local-variable 'comment-start-skip)
  (setq comment-start-skip
355
       "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\)\\(;+\\|#|\\) *")
356 357 358 359
  (make-local-variable 'font-lock-keywords-case-fold-search)
  (setq font-lock-keywords-case-fold-search t)
  (setq imenu-case-fold-search t)
  (set-syntax-table lisp-mode-syntax-table)
360
  (run-mode-hooks 'lisp-mode-hook))
361 362 363 364 365 366 367
(put 'lisp-mode 'find-tag-default-function 'lisp-find-tag-default)

(defun lisp-find-tag-default ()
  (let ((default (find-tag-default)))
    (when (stringp default)
      (if (string-match ":+" default)
          (substring default (match-end 0))
Richard M. Stallman's avatar
Richard M. Stallman committed
368
	default))))
Brian Preble's avatar
Brian Preble committed
369

Dave Love's avatar
Dave Love committed
370 371 372
;; Used in old LispM code.
(defalias 'common-lisp-mode 'lisp-mode)

373 374
;; This will do unless inf-lisp.el is loaded.
(defun lisp-eval-defun (&optional and-go)
Brian Preble's avatar
Brian Preble committed
375 376 377 378
  "Send the current defun to the Lisp process made by \\[run-lisp]."
  (interactive)
  (error "Process lisp does not exist"))

Dave Love's avatar
Dave Love committed
379 380
(defvar lisp-interaction-mode-map
  (let ((map (make-sparse-keymap)))
381
    (set-keymap-parent map lisp-mode-shared-map)
Dave Love's avatar
Dave Love committed
382
    (define-key map "\e\C-x" 'eval-defun)
383
    (define-key map "\e\C-q" 'indent-pp-sexp)
Dave Love's avatar
Dave Love committed
384 385 386
    (define-key map "\e\t" 'lisp-complete-symbol)
    (define-key map "\n" 'eval-print-last-sexp)
    map)
387
  "Keymap for Lisp Interaction mode.
388
All commands in `lisp-mode-shared-map' are inherited by this map.")
Brian Preble's avatar
Brian Preble committed
389

390
(defvar lisp-interaction-mode-abbrev-table lisp-mode-abbrev-table)
Stefan Monnier's avatar
Stefan Monnier committed
391
(define-derived-mode lisp-interaction-mode emacs-lisp-mode "Lisp Interaction"
Brian Preble's avatar
Brian Preble committed
392 393 394
  "Major mode for typing and evaluating Lisp forms.
Like Lisp mode except that \\[eval-print-last-sexp] evals the Lisp expression
before point, and prints its value into the buffer, advancing point.
Pavel Janík's avatar
Pavel Janík committed
395
Note that printing is controlled by `eval-expression-print-length'
396
and `eval-expression-print-level'.
Brian Preble's avatar
Brian Preble committed
397 398 399 400 401 402 403

Commands:
Delete converts tabs to spaces as it moves back.
Paragraphs are separated only by blank lines.
Semicolons start comments.
\\{lisp-interaction-mode-map}
Entry to this mode calls the value of `lisp-interaction-mode-hook'
404
if that value is non-nil.")
Brian Preble's avatar
Brian Preble committed
405

Roland McGrath's avatar
Roland McGrath committed
406
(defun eval-print-last-sexp ()
407 408 409 410 411
  "Evaluate sexp before point; print value into current buffer.

Note that printing the result is controlled by the variables
`eval-expression-print-length' and `eval-expression-print-level',
which see."
Roland McGrath's avatar
Roland McGrath committed
412
  (interactive)
Jim Blandy's avatar
Jim Blandy committed
413 414 415 416
  (let ((standard-output (current-buffer)))
    (terpri)
    (eval-last-sexp t)
    (terpri)))
417

418

419 420 421
(defun last-sexp-setup-props (beg end value alt1 alt2)
  "Set up text properties for the output of `eval-last-sexp-1'.
BEG and END are the start and end of the output in current-buffer.
422
VALUE is the Lisp value printed, ALT1 and ALT2 are strings for the
423 424 425 426 427 428
alternative printed representations that can be displayed."
  (let ((map (make-sparse-keymap)))
    (define-key map "\C-m" 'last-sexp-toggle-display)
    (define-key map [down-mouse-2] 'mouse-set-point)
    (define-key map [mouse-2] 'last-sexp-toggle-display)
    (add-text-properties
429
     beg end
430
     `(printed-value (,value ,alt1 ,alt2)
431
		     mouse-face highlight
432 433 434 435 436 437
		     keymap ,map
		     help-echo "RET, mouse-2: toggle abbreviated display"
		     rear-nonsticky (mouse-face keymap help-echo
						printed-value)))))


438
(defun last-sexp-toggle-display (&optional arg)
439
  "Toggle between abbreviated and unabbreviated printed representations."
440
  (interactive "P")
441 442
  (save-restriction
    (widen)
443 444 445 446 447 448 449 450 451 452 453 454 455 456 457
    (let ((value (get-text-property (point) 'printed-value)))
      (when value
	(let ((beg (or (previous-single-property-change (min (point-max) (1+ (point)))
							'printed-value)
		       (point)))
	      (end (or (next-single-char-property-change (point) 'printed-value) (point)))
	      (standard-output (current-buffer))
	      (point (point)))
	  (delete-region beg end)
	  (insert (nth 1 value))
	  (last-sexp-setup-props beg (point)
				 (nth 0 value)
				 (nth 2 value)
				 (nth 1 value))
	  (goto-char (min (point-max) point)))))))
458

459 460 461 462
(defun prin1-char (char)
  "Return a string representing CHAR as a character rather than as an integer.
If CHAR is not a character, return nil."
  (and (integerp char)
Stefan Monnier's avatar
Stefan Monnier committed
463
       (eventp char)
464
       (let ((c (event-basic-type char))
465 466
	     (mods (event-modifiers char))
	     string)
467 468
	 ;; Prevent ?A from turning into ?\S-a.
	 (if (and (memq 'shift mods)
469
		  (zerop (logand char ?\S-\^@))
470 471 472
		  (not (let ((case-fold-search nil))
			 (char-equal c (upcase c)))))
	     (setq c (upcase c) mods nil))
473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493
	 ;; What string are we considering using?
	 (condition-case nil
	     (setq string
		   (concat
		    "?"
		    (mapconcat
		     (lambda (modif)
		       (cond ((eq modif 'super) "\\s-")
			     (t (string ?\\ (upcase (aref (symbol-name modif) 0)) ?-))))
		     mods "")
		    (cond
		     ((memq c '(?\; ?\( ?\) ?\{ ?\} ?\[ ?\] ?\" ?\' ?\\)) (string ?\\ c))
		     ((eq c 127) "\\C-?")
		     (t
		      (string c)))))
	   (error nil))
	 ;; Verify the string reads a CHAR, not to some other character.
	 ;; If it doesn't, return nil instead.
	 (and string
	      (= (car (read-from-string string)) char)
	      string))))
494

495

496
(defun eval-last-sexp-1 (eval-last-sexp-arg-internal)
Brian Preble's avatar
Brian Preble committed
497 498
  "Evaluate sexp before point; print value in minibuffer.
With argument, print output into current buffer."
499
  (let ((standard-output (if eval-last-sexp-arg-internal (current-buffer) t)))
500 501
    (let ((value
	   (eval (let ((stab (syntax-table))
502
		       (opoint (point))
503
		       ignore-quotes
504
		       expr)
505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550
		   (save-excursion
		     (with-syntax-table emacs-lisp-mode-syntax-table
		       ;; If this sexp appears to be enclosed in `...'
		       ;; then ignore the surrounding quotes.
		       (setq ignore-quotes
			     (or (eq (following-char) ?\')
				 (eq (preceding-char) ?\')))
		       (forward-sexp -1)
		       ;; If we were after `?\e' (or similar case),
		       ;; use the whole thing, not just the `e'.
		       (when (eq (preceding-char) ?\\)
			 (forward-char -1)
			 (when (eq (preceding-char) ??)
			   (forward-char -1)))

		       ;; Skip over `#N='s.
		       (when (eq (preceding-char) ?=)
			 (let (labeled-p)
			   (save-excursion
			     (skip-chars-backward "0-9#=")
			     (setq labeled-p (looking-at "\\(#[0-9]+=\\)+")))
			   (when labeled-p
			     (forward-sexp -1))))

		       (save-restriction
			 ;; vladimir@cs.ualberta.ca 30-Jul-1997: skip ` in
			 ;; `variable' so that the value is returned, not the
			 ;; name
			 (if (and ignore-quotes
				  (eq (following-char) ?`))
			     (forward-char))
			 (narrow-to-region (point-min) opoint)
			 (setq expr (read (current-buffer)))
			 ;; If it's an (interactive ...) form, it's more
			 ;; useful to show how an interactive call would
			 ;; use it.
			 (and (consp expr)
			      (eq (car expr) 'interactive)
			      (setq expr
				    (list 'call-interactively
					  (list 'quote
						(list 'lambda
						      '(&rest args)
						      expr
						      'args)))))
			 expr)))))))
551 552 553 554 555 556 557 558 559 560 561
      (eval-last-sexp-print-value value))))

(defun eval-last-sexp-print-value (value)
  (let ((unabbreviated (let ((print-length nil) (print-level nil))
			 (prin1-to-string value)))
	(print-length eval-expression-print-length)
	(print-level eval-expression-print-level)
	(beg (point))
	end)
    (prog1
	(prin1 value)
562 563
      (let ((str (eval-expression-print-format value)))
	(if str (princ str)))
564 565 566 567 568 569 570 571 572 573
      (setq end (point))
      (when (and (bufferp standard-output)
		 (or (not (null print-length))
		     (not (null print-level)))
		 (not (string= unabbreviated
			       (buffer-substring-no-properties beg end))))
	(last-sexp-setup-props beg end value
			       unabbreviated
			       (buffer-substring-no-properties beg end))
	))))
574

Brian Preble's avatar
Brian Preble committed
575

576 577
(defvar eval-last-sexp-fake-value (make-symbol "t"))

578 579
(defun eval-last-sexp (eval-last-sexp-arg-internal)
  "Evaluate sexp before point; print value in minibuffer.
580
Interactively, with prefix argument, print output into current buffer."
581 582 583
  (interactive "P")
  (if (null eval-expression-debug-on-error)
      (eval-last-sexp-1 eval-last-sexp-arg-internal)
584
    (let ((old-value eval-last-sexp-fake-value) new-value value)
585 586 587 588 589 590
      (let ((debug-on-error old-value))
	(setq value (eval-last-sexp-1 eval-last-sexp-arg-internal))
	(setq new-value debug-on-error))
      (unless (eq old-value new-value)
	(setq debug-on-error new-value))
      value)))
591

592
(defun eval-defun-1 (form)
593 594 595
  "Treat some expressions specially.
Reset the `defvar' and `defcustom' variables to the initial value.
Reinitialize the face according to the `defface' specification."
596 597
  ;; The code in edebug-defun should be consistent with this, but not
  ;; the same, since this gets a macroexpended form.
598 599 600
  (cond ((not (listp form))
	 form)
	((and (eq (car form) 'defvar)
601 602 603 604
	      (cdr-safe (cdr-safe form))
	      (boundp (cadr form)))
	 ;; Force variable to be re-set.
	 `(progn (defvar ,(nth 1 form) nil ,@(nthcdr 3 form))
605
		 (setq-default ,(nth 1 form) ,(nth 2 form))))
606 607
	;; `defcustom' is now macroexpanded to
	;; `custom-declare-variable' with a quoted value arg.
Dave Love's avatar
Dave Love committed
608 609
	((and (eq (car form) 'custom-declare-variable)
	      (default-boundp (eval (nth 1 form))))
610
	 ;; Force variable to be bound.
611
	 (set-default (eval (nth 1 form)) (eval (nth 1 (nth 2 form))))
612
	 form)
613 614 615 616 617 618 619
	;; `defface' is macroexpanded to `custom-declare-face'.
	((eq (car form) 'custom-declare-face)
	 ;; Reset the face.
	 (put (eval (nth 1 form)) 'face-defface-spec nil)
	 (setq face-new-frame-defaults
	       (assq-delete-all (eval (nth 1 form)) face-new-frame-defaults))
	 form)
620 621 622 623
	((eq (car form) 'progn)
	 (cons 'progn (mapcar 'eval-defun-1 (cdr form))))
	(t form)))

624
(defun eval-defun-2 ()
Roland McGrath's avatar
Roland McGrath committed
625
  "Evaluate defun that point is in or before.
Karl Heuer's avatar
Karl Heuer committed
626 627 628 629 630 631 632
The value is displayed in the minibuffer.
If the current defun is actually a call to `defvar',
then reset the variable using the initial value expression
even if the variable already has some other value.
\(Normally `defvar' does not change the variable's value
if it already has a value.\)

633 634
With argument, insert value in current buffer after the defun.
Return the result of evaluation."
Brian Preble's avatar
Brian Preble committed
635
  (interactive "P")
636 637 638 639 640 641 642 643 644
  (let ((debug-on-error eval-expression-debug-on-error)
	(print-length eval-expression-print-length)
	(print-level eval-expression-print-level))
    (save-excursion
      ;; Arrange for eval-region to "read" the (possibly) altered form.
      ;; eval-region handles recording which file defines a function or
      ;; variable.  Re-written using `apply' to avoid capturing
      ;; variables like `end'.
      (apply
645
       #'eval-region
646
       (let ((standard-output t)
647 648 649 650 651 652 653 654
	     beg end form)
	 ;; Read the form from the buffer, and record where it ends.
	 (save-excursion
	   (end-of-defun)
	   (beginning-of-defun)
	   (setq beg (point))
	   (setq form (read (current-buffer)))
	   (setq end (point)))
655
	 ;; Alter the form if necessary.
656 657 658 659 660 661 662
	 (setq form (eval-defun-1 (macroexpand form)))
	 (list beg end standard-output
	       `(lambda (ignore)
		 ;; Skipping to the end of the specified region
		 ;; will make eval-region return.
		 (goto-char ,end)
		 ',form))))))
Dave Love's avatar
Dave Love committed
663 664
  ;; The result of evaluation has been put onto VALUES.  So return it.
  (car values))
665

666 667
(defun eval-defun (edebug-it)
  "Evaluate the top-level form containing point, or after point.
668

Richard M. Stallman's avatar
Richard M. Stallman committed
669 670 671 672 673
If the current defun is actually a call to `defvar' or `defcustom',
evaluating it this way resets the variable using its initial value
expression even if the variable already has some other value.
\(Normally `defvar' and `defcustom' do not alter the value if there
already is one.)
674 675 676 677 678 679 680 681

With a prefix argument, instrument the code for Edebug.

If acting on a `defun' for FUNCTION, and the function was
instrumented, `Edebug: FUNCTION' is printed in the minibuffer.  If not
instrumented, just FUNCTION is printed.

If not acting on a `defun', the result of evaluation is displayed in
682 683 684
the minibuffer.  This display is controlled by the variables
`eval-expression-print-length' and `eval-expression-print-level',
which see."
685
  (interactive "P")
686 687 688 689 690 691 692 693 694 695 696 697 698
  (cond (edebug-it
	 (require 'edebug)
	 (eval-defun (not edebug-all-defs)))
	(t
	 (if (null eval-expression-debug-on-error)
	     (eval-defun-2)
	   (let ((old-value (make-symbol "t")) new-value value)
	     (let ((debug-on-error old-value))
	       (setq value (eval-defun-2))
	       (setq new-value debug-on-error))
	     (unless (eq old-value new-value)
	       (setq debug-on-error new-value))
	     value)))))
699

700

Brian Preble's avatar
Brian Preble committed
701 702 703 704
(defun lisp-comment-indent ()
  (if (looking-at "\\s<\\s<\\s<")
      (current-column)
    (if (looking-at "\\s<\\s<")
705
	(let ((tem (or (calculate-lisp-indent) (current-column))))
Brian Preble's avatar
Brian Preble committed
706 707 708 709 710
	  (if (listp tem) (car tem) tem))
      (skip-chars-backward " \t")
      (max (if (bolp) 0 (1+ (current-column)))
	   comment-column))))

711 712 713
;; This function just forces a more costly detection of comments (using
;; parse-partial-sexp from beginning-of-defun).  I.e. It avoids the problem of
;; taking a `;' inside a string started on another line for a comment starter.
714 715
;; Note: `newcomment' gets it right now since we set comment-use-global-state
;; so we could get rid of it.   -stef
716 717 718
(defun lisp-mode-auto-fill ()
  (if (> (current-column) (current-fill-column))
      (if (save-excursion
719
	    (nth 4 (syntax-ppss (point))))
720
	  (do-auto-fill)
721 722 723 724
	(unless (and (boundp 'comment-auto-fill-only-comments)
		     comment-auto-fill-only-comments)
	  (let ((comment-start nil) (comment-start-skip nil))
	    (do-auto-fill))))))
725

726 727
(defvar lisp-indent-offset nil
  "If non-nil, indent second line of expressions that many more columns.")
Dave Love's avatar
Dave Love committed
728
(defvar lisp-indent-function 'lisp-indent-function)
Brian Preble's avatar
Brian Preble committed
729 730 731 732 733 734

(defun lisp-indent-line (&optional whole-exp)
  "Indent current line as Lisp code.
With argument, indent any additional lines of the same expression
rigidly along with this one."
  (interactive "P")
735 736 737
  (let ((indent (calculate-lisp-indent)) shift-amt end
	(pos (- (point-max) (point)))
	(beg (progn (beginning-of-line) (point))))
Brian Preble's avatar
Brian Preble committed
738
    (skip-chars-forward " \t")
739 740 741
    (if (or (null indent) (looking-at "\\s<\\s<\\s<"))
	;; Don't alter indentation of a ;;; comment line
	;; or a line that starts in a string.
742
	(goto-char (- (point-max) pos))
Brian Preble's avatar
Brian Preble committed
743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768
      (if (and (looking-at "\\s<") (not (looking-at "\\s<\\s<")))
	  ;; Single-semicolon comment lines should be indented
	  ;; as comment lines, not as code.
	  (progn (indent-for-comment) (forward-char -1))
	(if (listp indent) (setq indent (car indent)))
	(setq shift-amt (- indent (current-column)))
	(if (zerop shift-amt)
	    nil
	  (delete-region beg (point))
	  (indent-to indent)))
      ;; If initial point was within line's indentation,
      ;; position after the indentation.  Else stay at same point in text.
      (if (> (- (point-max) pos) (point))
	  (goto-char (- (point-max) pos)))
      ;; If desired, shift remaining lines of expression the same amount.
      (and whole-exp (not (zerop shift-amt))
	   (save-excursion
	     (goto-char beg)
	     (forward-sexp 1)
	     (setq end (point))
	     (goto-char beg)
	     (forward-line 1)
	     (setq beg (point))
	     (> end beg))
	   (indent-code-rigidly beg end shift-amt)))))

769
(defvar calculate-lisp-indent-last-sexp)
770

Brian Preble's avatar
Brian Preble committed
771 772 773
(defun calculate-lisp-indent (&optional parse-start)
  "Return appropriate indentation for current line as Lisp code.
In usual case returns an integer: the column to indent to.
774 775 776 777
If the value is nil, that means don't change the indentation
because the line starts inside a string.

The value can also be a list of the form (COLUMN CONTAINING-SEXP-START).
Brian Preble's avatar
Brian Preble committed
778
This means that following lines at the same level of indentation
779 780 781
should not necessarily be indented the same as this line.
Then COLUMN is the column to indent to, and CONTAINING-SEXP-START
is the buffer position of the start of the containing expression."
Brian Preble's avatar
Brian Preble committed
782 783 784 785 786 787 788
  (save-excursion
    (beginning-of-line)
    (let ((indent-point (point))
          state paren-depth
          ;; setting this to a number inhibits calling hook
          (desired-indent nil)
          (retry t)
789
          calculate-lisp-indent-last-sexp containing-sexp)
Brian Preble's avatar
Brian Preble committed
790 791 792 793 794 795 796 797 798 799 800
      (if parse-start
          (goto-char parse-start)
          (beginning-of-defun))
      ;; Find outermost containing sexp
      (while (< (point) indent-point)
        (setq state (parse-partial-sexp (point) indent-point 0)))
      ;; Find innermost containing sexp
      (while (and retry
		  state
                  (> (setq paren-depth (elt state 0)) 0))
        (setq retry nil)
801
        (setq calculate-lisp-indent-last-sexp (elt state 2))
Brian Preble's avatar
Brian Preble committed
802 803 804 805
        (setq containing-sexp (elt state 1))
        ;; Position following last unclosed open.
        (goto-char (1+ containing-sexp))
        ;; Is there a complete sexp since then?
806 807
        (if (and calculate-lisp-indent-last-sexp
		 (> calculate-lisp-indent-last-sexp (point)))
Brian Preble's avatar
Brian Preble committed
808
            ;; Yes, but is there a containing sexp after that?
809 810
            (let ((peek (parse-partial-sexp calculate-lisp-indent-last-sexp
					    indent-point 0)))
Brian Preble's avatar
Brian Preble committed
811 812 813 814 815
              (if (setq retry (car (cdr peek))) (setq state peek)))))
      (if retry
          nil
        ;; Innermost containing sexp found
        (goto-char (1+ containing-sexp))
816
        (if (not calculate-lisp-indent-last-sexp)
Brian Preble's avatar
Brian Preble committed
817 818 819 820
	    ;; indent-point immediately follows open paren.
	    ;; Don't call hook.
            (setq desired-indent (current-column))
	  ;; Find the start of first element of containing sexp.
821
	  (parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t)
Brian Preble's avatar
Brian Preble committed
822 823 824 825 826
	  (cond ((looking-at "\\s(")
		 ;; First element of containing sexp is a list.
		 ;; Indent under that list.
		 )
		((> (save-excursion (forward-line 1) (point))
827
		    calculate-lisp-indent-last-sexp)
Brian Preble's avatar
Brian Preble committed
828 829
		 ;; This is the first line to start within the containing sexp.
		 ;; It's almost certainly a function call.
830
		 (if (= (point) calculate-lisp-indent-last-sexp)
Brian Preble's avatar
Brian Preble committed
831 832 833 834 835 836
		     ;; Containing sexp has nothing before this line
		     ;; except the first element.  Indent under that element.
		     nil
		   ;; Skip the first element, find start of second (the first
		   ;; argument of the function call) and indent under.
		   (progn (forward-sexp 1)
837 838 839
			  (parse-partial-sexp (point)
					      calculate-lisp-indent-last-sexp
					      0 t)))
Brian Preble's avatar
Brian Preble committed
840 841
		 (backward-prefix-chars))
		(t
842
		 ;; Indent beneath first sexp on same line as
Dave Love's avatar
Dave Love committed
843
		 ;; `calculate-lisp-indent-last-sexp'.  Again, it's
844 845
		 ;; almost certainly a function call.
		 (goto-char calculate-lisp-indent-last-sexp)
Brian Preble's avatar
Brian Preble committed
846
		 (beginning-of-line)
847 848
		 (parse-partial-sexp (point) calculate-lisp-indent-last-sexp
				     0 t)
Brian Preble's avatar
Brian Preble committed
849 850
		 (backward-prefix-chars)))))
      ;; Point is at the point to indent under unless we are inside a string.
851
      ;; Call indentation hook except when overridden by lisp-indent-offset
Brian Preble's avatar
Brian Preble committed
852 853 854 855
      ;; or if the desired indentation has already been computed.
      (let ((normal-indent (current-column)))
        (cond ((elt state 3)
               ;; Inside a string, don't change indentation.
856
	       nil)
Brian Preble's avatar
Brian Preble committed
857 858 859 860 861 862 863 864 865 866 867
              ((and (integerp lisp-indent-offset) containing-sexp)
               ;; Indent by constant offset
               (goto-char containing-sexp)
               (+ (current-column) lisp-indent-offset))
              (desired-indent)
              ((and (boundp 'lisp-indent-function)
                    lisp-indent-function
                    (not retry))
               (or (funcall lisp-indent-function indent-point state)
                   normal-indent))
              (t
Brian Preble's avatar
Brian Preble committed
868
               normal-indent))))))
Brian Preble's avatar
Brian Preble committed
869 870

(defun lisp-indent-function (indent-point state)
871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890
  "This function is the normal value of the variable `lisp-indent-function'.
It is used when indenting a line within a function call, to see if the
called function says anything special about how to indent the line.

INDENT-POINT is the position where the user typed TAB, or equivalent.
Point is located at the point to indent under (for default indentation);
STATE is the `parse-partial-sexp' state for that position.

If the current line is in a call to a Lisp function
which has a non-nil property `lisp-indent-function',
that specifies how to do the indentation.  The property value can be
* `defun', meaning indent `defun'-style;
* an integer N, meaning indent the first N arguments specially
like ordinary function arguments and then indent any further
aruments like a body;
* a function to call just as this function was called.
If that function returns nil, that means it doesn't specify
the indentation.

This function also returns nil meaning don't specify the indentation."
Brian Preble's avatar
Brian Preble committed
891 892
  (let ((normal-indent (current-column)))
    (goto-char (1+ (elt state 1)))
893
    (parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t)
Brian Preble's avatar
Brian Preble committed
894 895
    (if (and (elt state 2)
             (not (looking-at "\\sw\\|\\s_")))
Juanma Barranquero's avatar
Juanma Barranquero committed
896
        ;; car of form doesn't seem to be a symbol
Brian Preble's avatar
Brian Preble committed
897 898
        (progn
          (if (not (> (save-excursion (forward-line 1) (point))
899
                      calculate-lisp-indent-last-sexp))
900 901 902 903 904 905 906
		(progn (goto-char calculate-lisp-indent-last-sexp)
		       (beginning-of-line)
		       (parse-partial-sexp (point)
					   calculate-lisp-indent-last-sexp 0 t)))
	    ;; Indent under the list or under the first sexp on the same
	    ;; line as calculate-lisp-indent-last-sexp.  Note that first
	    ;; thing on that line has to be complete sexp since we are
907
          ;; inside the innermost containing sexp.
Brian Preble's avatar
Brian Preble committed
908 909 910 911 912
          (backward-prefix-chars)
          (current-column))
      (let ((function (buffer-substring (point)
					(progn (forward-sexp 1) (point))))
	    method)
913 914
	(setq method (or (get (intern-soft function) 'lisp-indent-function)
			 (get (intern-soft function) 'lisp-indent-hook)))
Brian Preble's avatar
Brian Preble committed
915 916 917 918 919 920 921 922 923 924 925
	(cond ((or (eq method 'defun)
		   (and (null method)
			(> (length function) 3)
			(string-match "\\`def" function)))
	       (lisp-indent-defform state indent-point))
	      ((integerp method)
	       (lisp-indent-specform method state
				     indent-point normal-indent))
	      (method
		(funcall method state indent-point)))))))

926
(defvar lisp-body-indent 2
927
  "Number of columns to indent the second line of a `(def...)' form.")
Brian Preble's avatar
Brian Preble committed
928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981

(defun lisp-indent-specform (count state indent-point normal-indent)
  (let ((containing-form-start (elt state 1))
        (i count)
        body-indent containing-form-column)
    ;; Move to the start of containing form, calculate indentation
    ;; to use for non-distinguished forms (> count), and move past the
    ;; function symbol.  lisp-indent-function guarantees that there is at
    ;; least one word or symbol character following open paren of containing
    ;; form.
    (goto-char containing-form-start)
    (setq containing-form-column (current-column))
    (setq body-indent (+ lisp-body-indent containing-form-column))
    (forward-char 1)
    (forward-sexp 1)
    ;; Now find the start of the last form.
    (parse-partial-sexp (point) indent-point 1 t)
    (while (and (< (point) indent-point)
                (condition-case ()
                    (progn
                      (setq count (1- count))
                      (forward-sexp 1)
                      (parse-partial-sexp (point) indent-point 1 t))
                  (error nil))))
    ;; Point is sitting on first character of last (or count) sexp.
    (if (> count 0)
        ;; A distinguished form.  If it is the first or second form use double
        ;; lisp-body-indent, else normal indent.  With lisp-body-indent bound
        ;; to 2 (the default), this just happens to work the same with if as
        ;; the older code, but it makes unwind-protect, condition-case,
        ;; with-output-to-temp-buffer, et. al. much more tasteful.  The older,
        ;; less hacked, behavior can be obtained by replacing below with
        ;; (list normal-indent containing-form-start).
        (if (<= (- i count) 1)
            (list (+ containing-form-column (* 2 lisp-body-indent))
                  containing-form-start)
            (list normal-indent containing-form-start))
      ;; A non-distinguished form.  Use body-indent if there are no
      ;; distinguished forms and this is the first undistinguished form,
      ;; or if this is the first undistinguished form and the preceding
      ;; distinguished form has indentation at least as great as body-indent.
      (if (or (and (= i 0) (= count 0))
              (and (= count 0) (<= body-indent normal-indent)))
          body-indent
          normal-indent))))

(defun lisp-indent-defform (state indent-point)
  (goto-char (car (cdr state)))
  (forward-line 1)
  (if (> (point) (car (cdr (cdr state))))
      (progn
	(goto-char (car (cdr state)))
	(+ lisp-body-indent (current-column)))))

982

Brian Preble's avatar
Brian Preble committed
983 984 985 986 987 988 989 990 991 992 993
;; (put 'progn 'lisp-indent-function 0), say, causes progn to be indented
;; like defun if the first form is placed on the next line, otherwise
;; it is indented like any other form (i.e. forms line up under first).

(put 'lambda 'lisp-indent-function 'defun)
(put 'autoload 'lisp-indent-function 'defun)
(put 'progn 'lisp-indent-function 0)
(put 'prog1 'lisp-indent-function 1)
(put 'prog2 'lisp-indent-function 2)
(put 'save-excursion 'lisp-indent-function 0)
(put 'save-window-excursion 'lisp-indent-function 0)
994
(put 'save-selected-window 'lisp-indent-function 0)
Brian Preble's avatar
Brian Preble committed
995
(put 'save-restriction 'lisp-indent-function 0)
Richard M. Stallman's avatar
Richard M. Stallman committed
996
(put 'save-match-data 'lisp-indent-function 0)
997
(put 'save-current-buffer 'lisp-indent-function 0)
998
(put 'with-current-buffer 'lisp-indent-function 1)
999
(put 'combine-after-change-calls 'lisp-indent-function 0)
1000
(put 'with-output-to-string 'lisp-indent-function 0)
1001
(put 'with-temp-file 'lisp-indent-function 1)
1002
(put 'with-temp-buffer 'lisp-indent-function 0)
1003
(put 'with-temp-message 'lisp-indent-function 1)
1004
(put 'with-syntax-table 'lisp-indent-function 1)
Brian Preble's avatar
Brian Preble committed
1005 1006 1007 1008
(put 'let 'lisp-indent-function 1)
(put 'let* 'lisp-indent-function 1)
(put 'while 'lisp-indent-function 1)
(put 'if 'lisp-indent-function 2)
1009
(put 'read-if 'lisp-indent-function 2)
Brian Preble's avatar
Brian Preble committed
1010 1011 1012 1013
(put 'catch 'lisp-indent-function 1)
(put 'condition-case 'lisp-indent-function 2)
(put 'unwind-protect 'lisp-indent-function 1)
(put 'with-output-to-temp-buffer 'lisp-indent-function 1)
1014
(put 'eval-after-load 'lisp-indent-function 1)
1015 1016 1017 1018
(put 'dolist 'lisp-indent-function 1)
(put 'dotimes 'lisp-indent-function 1)
(put 'when 'lisp-indent-function 1)
(put 'unless 'lisp-indent-function 1)
Brian Preble's avatar
Brian Preble committed
1019 1020 1021 1022 1023 1024

(defun indent-sexp (&optional endpos)
  "Indent each line of the list starting just after point.
If optional arg ENDPOS is given, indent each line, stopping when
ENDPOS is encountered."
  (interactive)
Jim Blandy's avatar
Jim Blandy committed
1025 1026
  (let ((indent-stack (list nil))
	(next-depth 0)
1027 1028 1029 1030 1031