lisp-mode.el 45.7 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) 1985,86,1999,2000,01,03,2004  Free Software Foundation, Inc.
Eric S. Raymond's avatar
Eric S. Raymond committed
4

Eric S. Raymond's avatar
Eric S. Raymond committed
5
;; Maintainer: FSF
Eric S. Raymond's avatar
Eric S. Raymond committed
6
;; Keywords: lisp, languages
Eric S. Raymond's avatar
Eric S. Raymond committed
7

Brian Preble's avatar
Brian Preble committed
8 9 10 11
;; 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
12
;; the Free Software Foundation; either version 2, or (at your option)
Brian Preble's avatar
Brian Preble committed
13 14 15 16 17 18 19 20
;; 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
21 22 23
;; 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
24

25 26 27
;;; Commentary:

;; The base major mode for editing Lisp code (used also for Emacs Lisp).
Dave Love's avatar
Dave Love committed
28
;; This mode is documented in the Emacs manual.
29 30 31

;;; Code:

Dave Love's avatar
Dave Love committed
32
(defvar lisp-mode-abbrev-table nil)
Brian Preble's avatar
Brian Preble committed
33

Dave Love's avatar
Dave Love committed
34 35
(defvar emacs-lisp-mode-syntax-table
  (let ((table (make-syntax-table)))
Brian Preble's avatar
Brian Preble committed
36 37
    (let ((i 0))
      (while (< i ?0)
Dave Love's avatar
Dave Love committed
38
	(modify-syntax-entry i "_   " table)
Brian Preble's avatar
Brian Preble committed
39 40 41
	(setq i (1+ i)))
      (setq i (1+ ?9))
      (while (< i ?A)
Dave Love's avatar
Dave Love committed
42
	(modify-syntax-entry i "_   " table)
Brian Preble's avatar
Brian Preble committed
43 44 45
	(setq i (1+ i)))
      (setq i (1+ ?Z))
      (while (< i ?a)
Dave Love's avatar
Dave Love committed
46
	(modify-syntax-entry i "_   " table)
Brian Preble's avatar
Brian Preble committed
47 48 49
	(setq i (1+ i)))
      (setq i (1+ ?z))
      (while (< i 128)
Dave Love's avatar
Dave Love committed
50
	(modify-syntax-entry i "_   " table)
Brian Preble's avatar
Brian Preble committed
51
	(setq i (1+ i)))
Dave Love's avatar
Dave Love committed
52 53 54 55
      (modify-syntax-entry ?  "    " table)
      (modify-syntax-entry ?\t "    " table)
      (modify-syntax-entry ?\f "    " table)
      (modify-syntax-entry ?\n ">   " table)
56
      ;; Give CR the same syntax as newline, for selective-display.
Dave Love's avatar
Dave Love committed
57 58 59 60 61
      (modify-syntax-entry ?\^m ">   " table)
      (modify-syntax-entry ?\; "<   " table)
      (modify-syntax-entry ?` "'   " table)
      (modify-syntax-entry ?' "'   " table)
      (modify-syntax-entry ?, "'   " table)
62
      (modify-syntax-entry ?@ "'   " table)
Brian Preble's avatar
Brian Preble committed
63
      ;; Used to be singlequote; changed for flonums.
Dave Love's avatar
Dave Love committed
64 65 66 67 68 69 70
      (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 ?\[ "(]  " table)
71
      (modify-syntax-entry ?\] ")[  " table))
Dave Love's avatar
Dave Love committed
72 73 74 75 76 77 78
    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)
79
    (modify-syntax-entry ?| "\" 23b" table)
Dave Love's avatar
Dave Love committed
80
    table))
Jim Blandy's avatar
Jim Blandy committed
81

Brian Preble's avatar
Brian Preble committed
82 83
(define-abbrev-table 'lisp-mode-abbrev-table ())

84
(defvar lisp-imenu-generic-expression
Dave Love's avatar
Dave Love committed
85
  (list
86
   (list nil
87 88 89 90 91 92 93 94 95
	 (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"
96 97
				"defgeneric" "defmethod") t))
			   "\\s-+\\(\\sw\\(\\sw\\|\\s_\\)+\\)"))
98
	 2)
99
   (list (purecopy "Variables")
100 101 102 103
	 (purecopy (concat "^\\s-*("
			   (eval-when-compile
			     (regexp-opt
			      '("defvar" "defconst" "defconstant" "defcustom"
104 105
				"defparameter" "define-symbol-macro") t))
			   "\\s-+\\(\\sw\\(\\sw\\|\\s_\\)+\\)"))
106
	 2)
107
   (list (purecopy "Types")
108 109 110
	 (purecopy (concat "^\\s-*("
			   (eval-when-compile
			     (regexp-opt
111 112 113
			      '("defgroup" "deftheme" "deftype" "defstruct"
				"defclass" "define-condition" "define-widget"
				"defface" "defpackage") t))
114
			   "\\s-+'?\\(\\sw\\(\\sw\\|\\s_\\)+\\)"))
115 116 117 118
	 2))

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

119 120 121 122 123 124
;; 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)
125
(put 'deftheme 'doc-string-elt 2)
126 127
(put 'defconst 'doc-string-elt 3)
(put 'defmacro 'doc-string-elt 3)
128
(put 'defmacro* 'doc-string-elt 3)
129 130 131 132 133 134 135 136
(put 'defsubst 'doc-string-elt 3)
(put 'define-skeleton 'doc-string-elt 2)
(put 'define-derived-mode 'doc-string-elt 4)
(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)
137
(put 'define-ibuffer-filter 'doc-string-elt 2)
138
(put 'define-ibuffer-op 'doc-string-elt 3)
139
(put 'define-ibuffer-sorter 'doc-string-elt 2)
140 141 142 143 144 145 146 147 148

(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
149 150
		       (while (and (not (bobp))
				   (progn (backward-sexp 1) (setq n (1+ n)))))
151 152 153 154 155 156 157 158 159 160 161 162 163
		     (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)
164 165
  (when lisp-syntax
    (set-syntax-table lisp-mode-syntax-table))
Brian Preble's avatar
Brian Preble committed
166 167 168
  (setq local-abbrev-table lisp-mode-abbrev-table)
  (make-local-variable 'paragraph-ignore-fill-prefix)
  (setq paragraph-ignore-fill-prefix t)
169 170
  (make-local-variable 'fill-paragraph-function)
  (setq fill-paragraph-function 'lisp-fill-paragraph)
171 172 173
  ;; 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.
174 175
  ;;  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
176 177 178 179 180 181
  (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)
182
  (make-local-variable 'outline-regexp)
183
  (setq outline-regexp ";;;;* [^ \t\n]\\|(")
Gerd Moellmann's avatar
Gerd Moellmann committed
184 185
  (make-local-variable 'outline-level)
  (setq outline-level 'lisp-outline-level)
Brian Preble's avatar
Brian Preble committed
186 187 188
  (make-local-variable 'comment-start)
  (setq comment-start ";")
  (make-local-variable 'comment-start-skip)
189 190 191
  ;; 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]\\)\\(\\\\\\\\\\)*\\);+ *")
192 193
  (make-local-variable 'comment-add)
  (setq comment-add 1)			;default to `;;' in comment-region
Brian Preble's avatar
Brian Preble committed
194 195
  (make-local-variable 'comment-column)
  (setq comment-column 40)
196 197
  ;; Don't get confused by `;' in doc strings when paragraph-filling.
  (set (make-local-variable 'comment-use-global-state) t)
198
  (make-local-variable 'imenu-generic-expression)
199 200
  (setq imenu-generic-expression lisp-imenu-generic-expression)
  (make-local-variable 'multibyte-syntax-as-symbol)
Stefan Monnier's avatar
Stefan Monnier committed
201
  (setq multibyte-syntax-as-symbol t)
202
  (set (make-local-variable 'syntax-begin-function) 'beginning-of-defun)
Stefan Monnier's avatar
Stefan Monnier committed
203 204 205
  (setq font-lock-defaults
	'((lisp-font-lock-keywords
	   lisp-font-lock-keywords-1 lisp-font-lock-keywords-2)
206
	  nil nil (("+-*/.<>=!?$%_&~^:" . "w")) nil
207 208 209
	  (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
210 211 212

(defun lisp-outline-level ()
  "Lisp mode `outline-level' function."
213
  (if (looking-at "(\\|;;;###autoload")
Gerd Moellmann's avatar
Gerd Moellmann committed
214 215 216 217
      1000
    (looking-at outline-regexp)
    (- (match-end 0) (match-beginning 0))))

218

Stefan Monnier's avatar
Stefan Monnier committed
219 220
(defvar lisp-mode-shared-map
  (let ((map (make-sparse-keymap)))
221
    (define-key map "\t" 'lisp-indent-line)
Stefan Monnier's avatar
Stefan Monnier committed
222 223
    (define-key map "\e\C-q" 'indent-sexp)
    (define-key map "\177" 'backward-delete-char-untabify)
224 225 226 227
    ;; 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
228
    map)
Brian Preble's avatar
Brian Preble committed
229 230 231 232
  "Keymap for commands shared by all sorts of Lisp modes.")

(defvar emacs-lisp-mode-map ()
  "Keymap for Emacs Lisp mode.
233
All commands in `lisp-mode-shared-map' are inherited by this map.")
Brian Preble's avatar
Brian Preble committed
234 235 236

(if emacs-lisp-mode-map
    ()
237
  (let ((map (make-sparse-keymap "Emacs-Lisp")))
238
    (setq emacs-lisp-mode-map (make-sparse-keymap))
239
    (set-keymap-parent emacs-lisp-mode-map lisp-mode-shared-map)
240 241
    (define-key emacs-lisp-mode-map "\e\t" 'lisp-complete-symbol)
    (define-key emacs-lisp-mode-map "\e\C-x" 'eval-defun)
242
    (define-key emacs-lisp-mode-map "\e\C-q" 'indent-pp-sexp)
243 244 245 246 247 248 249
    (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))
250
    (define-key map [emacs-byte-compile-and-load]
251
      '("Byte-compile And Load" . emacs-lisp-byte-compile-and-load))
252 253 254 255 256 257 258 259 260
    (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))
261 262 263 264
    (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)))
265 266 267 268 269 270

(defun emacs-lisp-byte-compile ()
  "Byte compile the file containing the current buffer."
  (interactive)
  (if buffer-file-name
      (byte-compile-file buffer-file-name)
271 272
    (error "The buffer must be saved in a file first")))

273
(defun emacs-lisp-byte-compile-and-load ()
274 275 276 277 278 279
  "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.
280
  (if (and (buffer-modified-p)
Dave Love's avatar
Dave Love committed
281
	   (y-or-n-p (format "Save buffer %s first? " (buffer-name))))
282 283 284 285 286
      (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
287

288 289
(defcustom emacs-lisp-mode-hook nil
  "Hook run when entering Emacs Lisp mode."
Dave Love's avatar
Dave Love committed
290
  :options '(turn-on-eldoc-mode imenu-add-menubar-index checkdoc-minor-mode)
291 292 293 294 295 296 297 298 299 300 301 302 303 304 305
  :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)

306
(defun emacs-lisp-mode ()
Brian Preble's avatar
Brian Preble committed
307 308 309 310 311 312 313
  "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."
314 315 316 317 318 319
  (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")
320
  (lisp-mode-variables)
321
  (setq imenu-case-fold-search nil)
322
  (run-mode-hooks 'emacs-lisp-mode-hook))
323
(put 'emacs-lisp-mode 'custom-mode-group 'lisp)
Brian Preble's avatar
Brian Preble committed
324

Dave Love's avatar
Dave Love committed
325 326
(defvar lisp-mode-map
  (let ((map (make-sparse-keymap)))
327
    (set-keymap-parent map lisp-mode-shared-map)
Dave Love's avatar
Dave Love committed
328 329 330
    (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
331
  "Keymap for ordinary Lisp mode.
332
All commands in `lisp-mode-shared-map' are inherited by this map.")
Brian Preble's avatar
Brian Preble committed
333

334
(defun lisp-mode ()
Brian Preble's avatar
Brian Preble committed
335 336 337 338 339 340 341 342 343 344
  "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."
345 346 347 348 349
  (interactive)
  (kill-all-local-variables)
  (use-local-map lisp-mode-map)
  (setq major-mode 'lisp-mode)
  (setq mode-name "Lisp")
350
  (lisp-mode-variables)
351 352
  (make-local-variable 'comment-start-skip)
  (setq comment-start-skip
353
       "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\)\\(;+\\|#|\\) *")
354 355 356 357
  (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)
358
  (run-mode-hooks 'lisp-mode-hook))
359 360 361 362 363 364 365 366
(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))
          default))))
Brian Preble's avatar
Brian Preble committed
367

Dave Love's avatar
Dave Love committed
368 369 370
;; Used in old LispM code.
(defalias 'common-lisp-mode 'lisp-mode)

371 372
;; This will do unless inf-lisp.el is loaded.
(defun lisp-eval-defun (&optional and-go)
Brian Preble's avatar
Brian Preble committed
373 374 375 376
  "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
377 378
(defvar lisp-interaction-mode-map
  (let ((map (make-sparse-keymap)))
379
    (set-keymap-parent map lisp-mode-shared-map)
Dave Love's avatar
Dave Love committed
380
    (define-key map "\e\C-x" 'eval-defun)
381
    (define-key map "\e\C-q" 'indent-pp-sexp)
Dave Love's avatar
Dave Love committed
382 383 384
    (define-key map "\e\t" 'lisp-complete-symbol)
    (define-key map "\n" 'eval-print-last-sexp)
    map)
385
  "Keymap for Lisp Interaction mode.
386
All commands in `lisp-mode-shared-map' are inherited by this map.")
Brian Preble's avatar
Brian Preble committed
387

388
(defvar lisp-interaction-mode-abbrev-table lisp-mode-abbrev-table)
Stefan Monnier's avatar
Stefan Monnier committed
389
(define-derived-mode lisp-interaction-mode emacs-lisp-mode "Lisp Interaction"
Brian Preble's avatar
Brian Preble committed
390 391 392
  "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
393
Note that printing is controlled by `eval-expression-print-length'
394
and `eval-expression-print-level'.
Brian Preble's avatar
Brian Preble committed
395 396 397 398 399 400 401

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'
402
if that value is non-nil.")
Brian Preble's avatar
Brian Preble committed
403

Roland McGrath's avatar
Roland McGrath committed
404
(defun eval-print-last-sexp ()
405 406 407 408 409
  "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
410
  (interactive)
Jim Blandy's avatar
Jim Blandy committed
411 412 413 414
  (let ((standard-output (current-buffer)))
    (terpri)
    (eval-last-sexp t)
    (terpri)))
415

416

417 418 419
(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.
420
VALUE is the Lisp value printed, ALT1 and ALT2 are strings for the
421 422 423 424 425 426
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
427
     beg end
428
     `(printed-value (,value ,alt1 ,alt2)
429
		     mouse-face highlight
430 431 432 433 434 435
		     keymap ,map
		     help-echo "RET, mouse-2: toggle abbreviated display"
		     rear-nonsticky (mouse-face keymap help-echo
						printed-value)))))


436
(defun last-sexp-toggle-display (&optional arg)
437
  "Toggle between abbreviated and unabbreviated printed representations."
438
  (interactive "P")
439 440
  (save-restriction
    (widen)
441 442 443 444 445 446 447 448 449 450 451 452 453 454 455
    (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)))))))
456

457 458 459 460
(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
461
       (eventp char)
462 463 464 465 466 467 468 469 470 471 472 473
       (let ((c (event-basic-type char)))
	 (concat
	  "?"
	  (mapconcat
	   (lambda (modif)
	     (cond ((eq modif 'super) "\\s-")
		   (t (string ?\\ (upcase (aref (symbol-name modif) 0)) ?-))))
	   (event-modifiers char) "")
	  (cond
	   ((memq c '(?\; ?\( ?\) ?\{ ?\} ?\[ ?\] ?\" ?\' ?\\)) (string ?\\ c))
	   ((eq c 127) "\\C-?")
	   (t (string c)))))))
474

475
(defun eval-last-sexp-1 (eval-last-sexp-arg-internal)
Brian Preble's avatar
Brian Preble committed
476 477
  "Evaluate sexp before point; print value in minibuffer.
With argument, print output into current buffer."
478
  (let ((standard-output (if eval-last-sexp-arg-internal (current-buffer) t)))
479 480
    (let ((value
	   (eval (let ((stab (syntax-table))
481
		       (opoint (point))
482
		       ignore-quotes
483
		       expr)
484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529
		   (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)))))))
530 531 532 533 534 535 536 537 538 539 540
      (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)
541 542 543
      (if (eq standard-output t)
          (let ((str (eval-expression-print-format value)))
            (if str (princ str))))
544 545 546 547 548 549 550 551 552 553
      (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))
	))))
554

Brian Preble's avatar
Brian Preble committed
555

556 557
(defun eval-last-sexp (eval-last-sexp-arg-internal)
  "Evaluate sexp before point; print value in minibuffer.
558
Interactively, with prefix argument, print output into current buffer."
559 560 561 562 563 564 565 566 567 568
  (interactive "P")
  (if (null eval-expression-debug-on-error)
      (eval-last-sexp-1 eval-last-sexp-arg-internal)
    (let ((old-value (make-symbol "t")) new-value value)
      (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)))
569

570
(defun eval-defun-1 (form)
571 572 573 574
  "Change defvar into defconst within FORM.
Likewise for other constructs as necessary."
  ;; The code in edebug-defun should be consistent with this, but not
  ;; the same, since this gets a macroexpended form.
575 576 577
  (cond ((not (listp form))
	 form)
	((and (eq (car form) 'defvar)
578 579 580 581 582
	      (cdr-safe (cdr-safe form))
	      (boundp (cadr form)))
	 ;; Force variable to be re-set.
	 `(progn (defvar ,(nth 1 form) nil ,@(nthcdr 3 form))
		 (setq ,(nth 1 form) ,(nth 2 form))))
583 584
	;; `defcustom' is now macroexpanded to
	;; `custom-declare-variable' with a quoted value arg.
Dave Love's avatar
Dave Love committed
585 586
	((and (eq (car form) 'custom-declare-variable)
	      (default-boundp (eval (nth 1 form))))
587
	 ;; Force variable to be bound.
588
	 (set-default (eval (nth 1 form)) (eval (nth 1 (nth 2 form))))
589 590 591 592 593
	 form)
	((eq (car form) 'progn)
	 (cons 'progn (mapcar 'eval-defun-1 (cdr form))))
	(t form)))

594
(defun eval-defun-2 ()
Roland McGrath's avatar
Roland McGrath committed
595
  "Evaluate defun that point is in or before.
Karl Heuer's avatar
Karl Heuer committed
596 597 598 599 600 601 602
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.
\(Normally `defvar' does not change the variable's value
if it already has a value.\)

603 604
With argument, insert value in current buffer after the defun.
Return the result of evaluation."
Brian Preble's avatar
Brian Preble committed
605
  (interactive "P")
606 607 608 609 610 611 612 613 614
  (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
615
       #'eval-region
616
       (let ((standard-output t)
617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632
	     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)))
	 ;; Alter the form if necessary, changing defvar into defconst, etc.
	 (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
633 634
  ;; The result of evaluation has been put onto VALUES.  So return it.
  (car values))
635

636 637
(defun eval-defun (edebug-it)
  "Evaluate the top-level form containing point, or after point.
638

Richard M. Stallman's avatar
Richard M. Stallman committed
639 640 641 642 643
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.)
644 645 646 647 648 649 650 651

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
652 653 654
the minibuffer.  This display is controlled by the variables
`eval-expression-print-length' and `eval-expression-print-level',
which see."
655
  (interactive "P")
656 657 658 659 660 661 662 663 664 665 666 667 668
  (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)))))
669

670

Brian Preble's avatar
Brian Preble committed
671 672 673 674
(defun lisp-comment-indent ()
  (if (looking-at "\\s<\\s<\\s<")
      (current-column)
    (if (looking-at "\\s<\\s<")
675
	(let ((tem (or (calculate-lisp-indent) (current-column))))
Brian Preble's avatar
Brian Preble committed
676 677 678 679 680
	  (if (listp tem) (car tem) tem))
      (skip-chars-backward " \t")
      (max (if (bolp) 0 (1+ (current-column)))
	   comment-column))))

681 682 683
;; 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.
684 685
;; Note: `newcomment' gets it right now since we set comment-use-global-state
;; so we could get rid of it.   -stef
686 687 688
(defun lisp-mode-auto-fill ()
  (if (> (current-column) (current-fill-column))
      (if (save-excursion
689
	    (nth 4 (syntax-ppss (point))))
690
	  (do-auto-fill)
691 692 693 694
	(unless (and (boundp 'comment-auto-fill-only-comments)
		     comment-auto-fill-only-comments)
	  (let ((comment-start nil) (comment-start-skip nil))
	    (do-auto-fill))))))
695

696 697
(defvar lisp-indent-offset nil
  "If non-nil, indent second line of expressions that many more columns.")
Dave Love's avatar
Dave Love committed
698
(defvar lisp-indent-function 'lisp-indent-function)
Brian Preble's avatar
Brian Preble committed
699 700 701 702 703 704

(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")
705 706 707
  (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
708
    (skip-chars-forward " \t")
709 710 711
    (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.
712
	(goto-char (- (point-max) pos))
Brian Preble's avatar
Brian Preble committed
713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738
      (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)))))

739
(defvar calculate-lisp-indent-last-sexp)
740

Brian Preble's avatar
Brian Preble committed
741 742 743
(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.
744 745 746 747
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
748
This means that following lines at the same level of indentation
749 750 751
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
752 753 754 755 756 757 758
  (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)
759
          calculate-lisp-indent-last-sexp containing-sexp)
Brian Preble's avatar
Brian Preble committed
760 761 762 763 764 765 766 767 768 769 770
      (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)
771
        (setq calculate-lisp-indent-last-sexp (elt state 2))
Brian Preble's avatar
Brian Preble committed
772 773 774 775
        (setq containing-sexp (elt state 1))
        ;; Position following last unclosed open.
        (goto-char (1+ containing-sexp))
        ;; Is there a complete sexp since then?
776 777
        (if (and calculate-lisp-indent-last-sexp
		 (> calculate-lisp-indent-last-sexp (point)))
Brian Preble's avatar
Brian Preble committed
778
            ;; Yes, but is there a containing sexp after that?
779 780
            (let ((peek (parse-partial-sexp calculate-lisp-indent-last-sexp
					    indent-point 0)))
Brian Preble's avatar
Brian Preble committed
781 782 783 784 785
              (if (setq retry (car (cdr peek))) (setq state peek)))))
      (if retry
          nil
        ;; Innermost containing sexp found
        (goto-char (1+ containing-sexp))
786
        (if (not calculate-lisp-indent-last-sexp)
Brian Preble's avatar
Brian Preble committed
787 788 789 790
	    ;; indent-point immediately follows open paren.
	    ;; Don't call hook.
            (setq desired-indent (current-column))
	  ;; Find the start of first element of containing sexp.
791
	  (parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t)
Brian Preble's avatar
Brian Preble committed
792 793 794 795 796
	  (cond ((looking-at "\\s(")
		 ;; First element of containing sexp is a list.
		 ;; Indent under that list.
		 )
		((> (save-excursion (forward-line 1) (point))
797
		    calculate-lisp-indent-last-sexp)
Brian Preble's avatar
Brian Preble committed
798 799
		 ;; This is the first line to start within the containing sexp.
		 ;; It's almost certainly a function call.
800
		 (if (= (point) calculate-lisp-indent-last-sexp)
Brian Preble's avatar
Brian Preble committed
801 802 803 804 805 806
		     ;; 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)
807 808 809
			  (parse-partial-sexp (point)
					      calculate-lisp-indent-last-sexp
					      0 t)))
Brian Preble's avatar
Brian Preble committed
810 811
		 (backward-prefix-chars))
		(t
812
		 ;; Indent beneath first sexp on same line as
Dave Love's avatar
Dave Love committed
813
		 ;; `calculate-lisp-indent-last-sexp'.  Again, it's
814 815
		 ;; almost certainly a function call.
		 (goto-char calculate-lisp-indent-last-sexp)
Brian Preble's avatar
Brian Preble committed
816
		 (beginning-of-line)
817 818
		 (parse-partial-sexp (point) calculate-lisp-indent-last-sexp
				     0 t)
Brian Preble's avatar
Brian Preble committed
819 820
		 (backward-prefix-chars)))))
      ;; Point is at the point to indent under unless we are inside a string.
821
      ;; Call indentation hook except when overridden by lisp-indent-offset
Brian Preble's avatar
Brian Preble committed
822 823 824 825
      ;; 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.
826
	       nil)
Brian Preble's avatar
Brian Preble committed
827 828 829 830 831 832 833 834 835 836 837
              ((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
838
               normal-indent))))))
Brian Preble's avatar
Brian Preble committed
839 840

(defun lisp-indent-function (indent-point state)
841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860
  "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
861 862
  (let ((normal-indent (current-column)))
    (goto-char (1+ (elt state 1)))
863
    (parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t)
Brian Preble's avatar
Brian Preble committed
864 865
    (if (and (elt state 2)
             (not (looking-at "\\sw\\|\\s_")))
Juanma Barranquero's avatar
Juanma Barranquero committed
866
        ;; car of form doesn't seem to be a symbol
Brian Preble's avatar
Brian Preble committed
867 868
        (progn
          (if (not (> (save-excursion (forward-line 1) (point))
869
                      calculate-lisp-indent-last-sexp))
870 871 872 873 874 875 876
		(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
877
          ;; inside the innermost containing sexp.
Brian Preble's avatar
Brian Preble committed
878 879 880 881 882
          (backward-prefix-chars)
          (current-column))
      (let ((function (buffer-substring (point)
					(progn (forward-sexp 1) (point))))
	    method)
883 884
	(setq method (or (get (intern-soft function) 'lisp-indent-function)
			 (get (intern-soft function) 'lisp-indent-hook)))
Brian Preble's avatar
Brian Preble committed
885 886 887 888 889 890 891 892 893 894 895
	(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)))))))

896
(defvar lisp-body-indent 2
897
  "Number of columns to indent the second line of a `(def...)' form.")
Brian Preble's avatar
Brian Preble committed
898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951

(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)))))

952

Brian Preble's avatar
Brian Preble committed
953 954 955 956 957 958 959 960 961 962 963
;; (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)
964
(put 'save-selected-window 'lisp-indent-function 0)
Brian Preble's avatar
Brian Preble committed
965
(put 'save-restriction 'lisp-indent-function 0)
Richard M. Stallman's avatar
Richard M. Stallman committed
966
(put 'save-match-data 'lisp-indent-function 0)
967
(put 'save-current-buffer 'lisp-indent-function 0)
968
(put 'with-current-buffer 'lisp-indent-function 1)
969
(put 'combine-after-change-calls 'lisp-indent-function 0)
970
(put 'with-output-to-string 'lisp-indent-function 0)
971
(put 'with-temp-file 'lisp-indent-function 1)
972
(put 'with-temp-buffer 'lisp-indent-function 0)
973
(put 'with-temp-message 'lisp-indent-function 1)
974
(put 'with-syntax-table 'lisp-indent-function 1)
Brian Preble's avatar
Brian Preble committed
975 976 977 978
(put 'let 'lisp-indent-function 1)
(put 'let* 'lisp-indent-function 1)
(put 'while 'lisp-indent-function 1)
(put 'if 'lisp-indent-function 2)
979
(put 'read-if 'lisp-indent-function 2)
Brian Preble's avatar
Brian Preble committed
980 981 982 983
(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)
984
(put 'eval-after-load 'lisp-indent-function 1)
985 986 987 988
(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
989 990 991 992 993 994

(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
995 996
  (let ((indent-stack (list nil))
	(next-depth 0)
997 998 999 1000 1001 1002
	;; If ENDPOS is non-nil, use nil as STARTING-POINT
	;; so that calculate-lisp-indent will find the beginning of
	;; the defun we are in.
	;; If ENDPOS is nil, it is safe not to scan before point
	;; since every line we indent is more deeply nested than point is.
	(starting-point (if endpos nil (point)))
Jim Blandy's avatar
Jim Blandy committed
1003 1004
	(last-point (point))
	last-depth bol outer-loop-done inner-loop-done state this-indent)
1005 1006 1007
    (or endpos
	;; Get error now if we don't have a complete sexp after point.
	(save-excursion (forward-sexp 1)))
Brian Preble's avatar
Brian Preble committed
1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041
    (save-excursion
      (setq outer-loop-done nil)
      (while (if endpos (< (point) endpos)
	       (not outer-loop-done))
	(setq last-depth next-depth
	      inner-loop-done nil)
	;; Parse this line so we can learn the state
	;; to indent the next line.
	;; This inner loop goes through only once
	;; unless a line ends inside a string.
	(while (and (not inner-loop-done)
		    (not (setq outer-loop-done (eobp))))
	  (setq state (parse-partial-sexp (point) (progn (end-of-line) (point))
					  nil nil state))
	  (setq next-depth (car state))
	  ;; If the line contains a comment other than the sort
	  ;; that is indented like code,
	  ;; indent it now with indent-for-comment.
	  ;; Comments indented like code are right already.
	  ;; In any case clear the in-comment flag in the state
	  ;; because parse-partial-sexp never sees the newlines.
	  (if (car (nthcdr 4 state))
	      (progn (indent-for-comment)
		     (end-of-line)
		     (setcar (nthcdr 4 state) nil)))
	  ;; If this line ends inside a string,
	  ;; go straight to next line, remaining within the inner loop,
	  ;; and turn off the \-flag.
	  (if (car (nthcdr 3 state))
	      (progn
		(forward-line 1)
		(setcar (nthcdr 5 state) nil))
	    (setq inner-loop-done t)))
	(and endpos
Jim Blandy's avatar
Jim Blandy committed
1042 1043
	     (<= next-depth 0)
	     (progn
1044 1045
	       (setq indent-stack (nconc indent-stack
					 (make-list (- next-depth) nil))
Jim Blandy's avatar
Jim Blandy committed
1046 1047
		     last-depth (- last-depth next-depth)
		     next-depth 0)))
1048
	(or outer-loop-done endpos
Brian Preble's avatar
Brian Preble committed
1049 1050
	    (setq outer-loop-done (<= next-depth 0)))
	(if outer-loop-done
1051
	    (forward-line 1)
Brian Preble's avatar
Brian Preble committed
1052 1053 1054 1055 1056 1057 1058 1059 1060 1061