Mercurial > hg > xemacs-beta
comparison lisp/lisp-mode.el @ 428:3ecd8885ac67 r21-2-22
Import from CVS: tag r21-2-22
| author | cvs |
|---|---|
| date | Mon, 13 Aug 2007 11:28:15 +0200 |
| parents | |
| children | a5df635868b2 |
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| 427:0a0253eac470 | 428:3ecd8885ac67 |
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| 1 ;;; lisp-mode.el --- Lisp mode, and its idiosyncratic commands. | |
| 2 | |
| 3 ;; Copyright (C) 1985, 1996, 1997 Free Software Foundation, Inc. | |
| 4 ;; Copyright (C) 1995 Tinker Systems | |
| 5 | |
| 6 ;; Maintainer: FSF | |
| 7 ;; Keywords: lisp, languages, dumped | |
| 8 | |
| 9 ;; This file is part of XEmacs. | |
| 10 | |
| 11 ;; XEmacs is free software; you can redistribute it and/or modify it | |
| 12 ;; under the terms of the GNU General Public License as published by | |
| 13 ;; the Free Software Foundation; either version 2, or (at your option) | |
| 14 ;; any later version. | |
| 15 | |
| 16 ;; XEmacs is distributed in the hope that it will be useful, but | |
| 17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 19 ;; General Public License for more details. | |
| 20 | |
| 21 ;; You should have received a copy of the GNU General Public License | |
| 22 ;; along with XEmacs; see the file COPYING. If not, write to the Free | |
| 23 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
| 24 ;; 02111-1307, USA. | |
| 25 | |
| 26 ;;; Synched up with: FSF 19.34 (but starting to diverge). | |
| 27 | |
| 28 ;;; Commentary: | |
| 29 | |
| 30 ;; This file is dumped with XEmacs. | |
| 31 | |
| 32 ;; The base major mode for editing Lisp code (used also for Emacs Lisp). | |
| 33 ;; This mode is documented in the Emacs manual | |
| 34 | |
| 35 ;; July/05/97 slb Converted to use easymenu. | |
| 36 | |
| 37 ;;; Code: | |
| 38 | |
| 39 (defgroup lisp nil | |
| 40 "Lisp support, including Emacs Lisp." | |
| 41 :group 'languages | |
| 42 :group 'development) | |
| 43 | |
| 44 (defvar lisp-mode-syntax-table nil) | |
| 45 (defvar emacs-lisp-mode-syntax-table nil) | |
| 46 (defvar lisp-mode-abbrev-table nil) | |
| 47 | |
| 48 ;; XEmacs change | |
| 49 (defvar lisp-interaction-mode-popup-menu nil) | |
| 50 (defvar lisp-interaction-mode-popup-menu-1 | |
| 51 (purecopy '("Lisp-Interaction" | |
| 52 ["Evaluate Last S-expression" eval-last-sexp] | |
| 53 ["Evaluate Entire Buffer" eval-current-buffer] | |
| 54 ["Evaluate Region" eval-region | |
| 55 :active (region-exists-p)] | |
| 56 "---" | |
| 57 ["Evaluate This Defun" eval-defun] | |
| 58 ;; FSF says "Instrument Function for Debugging" | |
| 59 ["Debug This Defun" edebug-defun] | |
| 60 "---" | |
| 61 ["Trace a Function" trace-function-background] | |
| 62 ["Untrace All Functions" untrace-all | |
| 63 :active (fboundp 'untrace-all)] | |
| 64 "---" | |
| 65 ["Comment Out Region" comment-region | |
| 66 :active (region-exists-p)] | |
| 67 ["Indent Region" indent-region | |
| 68 :active (region-exists-p)] | |
| 69 ["Indent Line" lisp-indent-line] | |
| 70 "---" | |
| 71 ["Debug On Error" (setq debug-on-error (not debug-on-error)) | |
| 72 :style toggle :selected debug-on-error] | |
| 73 ["Debug On Quit" (setq debug-on-quit (not debug-on-quit)) | |
| 74 :style toggle :selected debug-on-quit] | |
| 75 ["Debug on Signal" (setq debug-on-signal (not debug-on-signal)) | |
| 76 :style toggle :selected debug-on-signal] | |
| 77 ))) | |
| 78 | |
| 79 (defvar emacs-lisp-mode-popup-menu nil) | |
| 80 (defvar emacs-lisp-mode-popup-menu-1 | |
| 81 (purecopy | |
| 82 (nconc | |
| 83 '("Emacs-Lisp" | |
| 84 ["Byte-compile This File" emacs-lisp-byte-compile] | |
| 85 ["Byte-compile/load This" emacs-lisp-byte-compile-and-load] | |
| 86 ["Byte-recompile Directory..." byte-recompile-directory] | |
| 87 "---") | |
| 88 (cdr lisp-interaction-mode-popup-menu-1)))) | |
| 89 | |
| 90 ;Don't have a menubar entry in Lisp Interaction mode. Otherwise, the | |
| 91 ;*scratch* buffer has a Lisp menubar item! Very confusing. | |
| 92 ;(defvar lisp-interaction-mode-menubar-menu | |
| 93 ; (purecopy (cons "Lisp" (cdr lisp-interaction-mode-popup-menu)))) | |
| 94 | |
| 95 (defvar emacs-lisp-mode-menubar-menu nil) | |
| 96 (defvar emacs-lisp-mode-menubar-menu-1 | |
| 97 (purecopy (cons "Lisp" (cdr emacs-lisp-mode-popup-menu-1)))) | |
| 98 | |
| 99 (if (not emacs-lisp-mode-syntax-table) | |
| 100 (let ((i 0)) | |
| 101 (setq emacs-lisp-mode-syntax-table (make-syntax-table)) | |
| 102 (while (< i ?0) | |
| 103 (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table) | |
| 104 (setq i (1+ i))) | |
| 105 (setq i (1+ ?9)) | |
| 106 (while (< i ?A) | |
| 107 (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table) | |
| 108 (setq i (1+ i))) | |
| 109 (setq i (1+ ?Z)) | |
| 110 (while (< i ?a) | |
| 111 (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table) | |
| 112 (setq i (1+ i))) | |
| 113 (setq i (1+ ?z)) | |
| 114 (while (< i 128) | |
| 115 (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table) | |
| 116 (setq i (1+ i))) | |
| 117 (modify-syntax-entry ? " " emacs-lisp-mode-syntax-table) | |
| 118 (modify-syntax-entry ?\t " " emacs-lisp-mode-syntax-table) | |
| 119 (modify-syntax-entry ?\f " " emacs-lisp-mode-syntax-table) | |
| 120 (modify-syntax-entry ?\n "> " emacs-lisp-mode-syntax-table) | |
| 121 ;; Give CR the same syntax as newline, for selective-display. | |
| 122 (modify-syntax-entry ?\^m "> " emacs-lisp-mode-syntax-table) | |
| 123 (modify-syntax-entry ?\; "< " emacs-lisp-mode-syntax-table) | |
| 124 (modify-syntax-entry ?` "' " emacs-lisp-mode-syntax-table) | |
| 125 (modify-syntax-entry ?' "' " emacs-lisp-mode-syntax-table) | |
| 126 (modify-syntax-entry ?, "' " emacs-lisp-mode-syntax-table) | |
| 127 ;; Used to be singlequote; changed for flonums. | |
| 128 (modify-syntax-entry ?. "_ " emacs-lisp-mode-syntax-table) | |
| 129 (modify-syntax-entry ?# "' " emacs-lisp-mode-syntax-table) | |
| 130 (modify-syntax-entry ?\" "\" " emacs-lisp-mode-syntax-table) | |
| 131 (modify-syntax-entry ?\\ "\\ " emacs-lisp-mode-syntax-table) | |
| 132 (modify-syntax-entry ?\( "() " emacs-lisp-mode-syntax-table) | |
| 133 (modify-syntax-entry ?\) ")( " emacs-lisp-mode-syntax-table) | |
| 134 (modify-syntax-entry ?\[ "(] " emacs-lisp-mode-syntax-table) | |
| 135 (modify-syntax-entry ?\] ")[ " emacs-lisp-mode-syntax-table))) | |
| 136 | |
| 137 (if (not lisp-mode-syntax-table) | |
| 138 (progn (setq lisp-mode-syntax-table | |
| 139 (copy-syntax-table emacs-lisp-mode-syntax-table)) | |
| 140 (modify-syntax-entry ?\| "\" " lisp-mode-syntax-table) | |
| 141 (modify-syntax-entry ?\[ "_ " lisp-mode-syntax-table) | |
| 142 ;; XEmacs changes | |
| 143 (modify-syntax-entry ?\] "_ " lisp-mode-syntax-table) | |
| 144 ;; | |
| 145 ;; If emacs was compiled with NEW_SYNTAX, then do | |
| 146 ;; CL's #| |# block comments. | |
| 147 (if (= 8 (length (parse-partial-sexp (point) (point)))) | |
| 148 (progn | |
| 149 (modify-syntax-entry ?# "' 58" lisp-mode-syntax-table) | |
| 150 (modify-syntax-entry ?| ". 67" lisp-mode-syntax-table)) | |
| 151 ;; else, old style | |
| 152 (modify-syntax-entry ?\| "\" " lisp-mode-syntax-table)))) | |
| 153 | |
| 154 (define-abbrev-table 'lisp-mode-abbrev-table ()) | |
| 155 | |
| 156 (defvar lisp-imenu-generic-expression | |
| 157 '( | |
| 158 (nil | |
| 159 "^\\s-*(def\\(un\\|subst\\|macro\\|advice\\)\\s-+\\([-A-Za-z0-9+*|:]+\\)" 2) | |
| 160 ("Variables" | |
| 161 "^\\s-*(def\\(var\\|const\\|custom\\)\\s-+\\([-A-Za-z0-9+*|:]+\\)" 2) | |
| 162 ("Types" | |
| 163 "^\\s-*(def\\(group\\|type\\|struct\\|class\\|ine-condition\\)\\s-+\\([-A-Za-z0-9+*|:]+\\)" | |
| 164 2)) | |
| 165 | |
| 166 "Imenu generic expression for Lisp mode. See `imenu-generic-expression'.") | |
| 167 | |
| 168 (defun lisp-mode-variables (lisp-syntax) | |
| 169 (cond (lisp-syntax | |
| 170 (set-syntax-table lisp-mode-syntax-table))) | |
| 171 (setq local-abbrev-table lisp-mode-abbrev-table) | |
| 172 (make-local-variable 'paragraph-start) | |
| 173 (setq paragraph-start (concat page-delimiter "\\|$" )) | |
| 174 (make-local-variable 'paragraph-separate) | |
| 175 (setq paragraph-separate paragraph-start) | |
| 176 (make-local-variable 'paragraph-ignore-fill-prefix) | |
| 177 (setq paragraph-ignore-fill-prefix t) | |
| 178 (make-local-variable 'fill-paragraph-function) | |
| 179 (setq fill-paragraph-function 'lisp-fill-paragraph) | |
| 180 ;; Adaptive fill mode gets in the way of auto-fill, | |
| 181 ;; and should make no difference for explicit fill | |
| 182 ;; because lisp-fill-paragraph should do the job. | |
| 183 (make-local-variable 'adaptive-fill-mode) | |
| 184 (setq adaptive-fill-mode nil) | |
| 185 (make-local-variable 'indent-line-function) | |
| 186 (setq indent-line-function 'lisp-indent-line) | |
| 187 (make-local-variable 'indent-region-function) | |
| 188 (setq indent-region-function 'lisp-indent-region) | |
| 189 (make-local-variable 'parse-sexp-ignore-comments) | |
| 190 (setq parse-sexp-ignore-comments t) | |
| 191 (make-local-variable 'outline-regexp) | |
| 192 (setq outline-regexp ";;; \\|(....") | |
| 193 (make-local-variable 'comment-start) | |
| 194 (setq comment-start ";") | |
| 195 ;; XEmacs change | |
| 196 (set (make-local-variable 'block-comment-start) ";;") | |
| 197 (make-local-variable 'comment-start-skip) | |
| 198 ;; Look within the line for a ; following an even number of backslashes | |
| 199 ;; after either a non-backslash or the line beginning. | |
| 200 (setq comment-start-skip "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\);+ *") | |
| 201 (make-local-variable 'comment-column) | |
| 202 (setq comment-column 40) | |
| 203 (make-local-variable 'comment-indent-function) | |
| 204 (setq comment-indent-function 'lisp-comment-indent) | |
| 205 ;; XEmacs change | |
| 206 (set (make-local-variable 'dabbrev-case-fold-search) nil) | |
| 207 (set (make-local-variable 'dabbrev-case-replace) nil) | |
| 208 (make-local-variable 'imenu-generic-expression) | |
| 209 (setq imenu-generic-expression lisp-imenu-generic-expression)) | |
| 210 | |
| 211 (defvar shared-lisp-mode-map () | |
| 212 "Keymap for commands shared by all sorts of Lisp modes.") | |
| 213 | |
| 214 (if shared-lisp-mode-map | |
| 215 () | |
| 216 (setq shared-lisp-mode-map (make-sparse-keymap)) | |
| 217 ;; XEmacs changes | |
| 218 (set-keymap-name shared-lisp-mode-map 'shared-lisp-mode-map) | |
| 219 (define-key shared-lisp-mode-map "\M-;" 'lisp-indent-for-comment) | |
| 220 (define-key shared-lisp-mode-map "\e\C-q" 'indent-sexp)) | |
| 221 | |
| 222 (defvar emacs-lisp-mode-map () | |
| 223 "Keymap for Emacs Lisp mode. | |
| 224 All commands in `shared-lisp-mode-map' are inherited by this map.") | |
| 225 | |
| 226 (if emacs-lisp-mode-map | |
| 227 () | |
| 228 ;; XEmacs: Ignore FSF nconc stuff | |
| 229 (setq emacs-lisp-mode-map (make-sparse-keymap)) | |
| 230 (set-keymap-name emacs-lisp-mode-map 'emacs-lisp-mode-map) | |
| 231 (set-keymap-parents emacs-lisp-mode-map (list shared-lisp-mode-map)) | |
| 232 (define-key emacs-lisp-mode-map "\e\t" 'lisp-complete-symbol) | |
| 233 (define-key emacs-lisp-mode-map "\e\C-x" 'eval-defun) | |
| 234 ;; XEmacs: Not sure what the FSF menu bindings are. I hope XEmacs | |
| 235 ;; doesn't need them. | |
| 236 ) | |
| 237 | |
| 238 (defun emacs-lisp-byte-compile () | |
| 239 "Byte compile the file containing the current buffer." | |
| 240 (interactive) | |
| 241 (if buffer-file-name | |
| 242 ;; XEmacs change. Force buffer save first | |
| 243 (progn | |
| 244 (save-buffer) | |
| 245 (byte-compile-file buffer-file-name)) | |
| 246 (error "The buffer must be saved in a file first."))) | |
| 247 | |
| 248 (defun emacs-lisp-byte-compile-and-load () | |
| 249 "Byte-compile the current file (if it has changed), then load compiled code." | |
| 250 (interactive) | |
| 251 (or buffer-file-name | |
| 252 (error "The buffer must be saved in a file first")) | |
| 253 (require 'bytecomp) | |
| 254 ;; Recompile if file or buffer has changed since last compilation. | |
| 255 (if (and (buffer-modified-p) | |
| 256 (y-or-n-p (format "save buffer %s first? " (buffer-name)))) | |
| 257 (save-buffer)) | |
| 258 (let ((compiled-file-name (byte-compile-dest-file buffer-file-name))) | |
| 259 (if (file-newer-than-file-p compiled-file-name buffer-file-name) | |
| 260 (load-file compiled-file-name) | |
| 261 (byte-compile-file buffer-file-name t)))) | |
| 262 | |
| 263 (defun emacs-lisp-mode () | |
| 264 "Major mode for editing Lisp code to run in Emacs. | |
| 265 Commands: | |
| 266 Delete converts tabs to spaces as it moves back. | |
| 267 Blank lines separate paragraphs. Semicolons start comments. | |
| 268 \\{emacs-lisp-mode-map} | |
| 269 Entry to this mode calls the value of `emacs-lisp-mode-hook' | |
| 270 if that value is non-nil." | |
| 271 (interactive) | |
| 272 (kill-all-local-variables) | |
| 273 (use-local-map emacs-lisp-mode-map) | |
| 274 (set-syntax-table emacs-lisp-mode-syntax-table) | |
| 275 ;; XEmacs changes | |
| 276 (setq major-mode 'emacs-lisp-mode | |
| 277 ;; mode-popup-menu emacs-lisp-mode-popup-menu | |
| 278 mode-name "Emacs-Lisp") | |
| 279 ;; (if (and (featurep 'menubar) | |
| 280 ;; current-menubar) | |
| 281 ;; (progn | |
| 282 ;; make a local copy of the menubar, so our modes don't | |
| 283 ;; change the global menubar | |
| 284 ;; (set-buffer-menubar current-menubar) | |
| 285 ;; (add-submenu nil emacs-lisp-mode-menubar-menu))) | |
| 286 (unless emacs-lisp-mode-popup-menu | |
| 287 (easy-menu-define emacs-lisp-mode-popup-menu emacs-lisp-mode-map "" | |
| 288 emacs-lisp-mode-popup-menu-1)) | |
| 289 (easy-menu-add emacs-lisp-mode-popup-menu) | |
| 290 (lisp-mode-variables nil) | |
| 291 (run-hooks 'emacs-lisp-mode-hook)) | |
| 292 | |
| 293 (defvar lisp-mode-map () | |
| 294 "Keymap for ordinary Lisp mode. | |
| 295 All commands in `shared-lisp-mode-map' are inherited by this map.") | |
| 296 | |
| 297 (if lisp-mode-map | |
| 298 () | |
| 299 ;; XEmacs changes | |
| 300 (setq lisp-mode-map (make-sparse-keymap)) | |
| 301 (set-keymap-name lisp-mode-map 'lisp-mode-map) | |
| 302 (set-keymap-parents lisp-mode-map (list shared-lisp-mode-map)) | |
| 303 (define-key lisp-mode-map "\e\C-x" 'lisp-send-defun) | |
| 304 ;; gag, no. use ilisp. -jwz | |
| 305 ;; (define-key lisp-mode-map "\C-c\C-z" 'run-lisp) | |
| 306 ) | |
| 307 | |
| 308 (defun lisp-mode () | |
| 309 "Major mode for editing Lisp code for Lisps other than GNU Emacs Lisp. | |
| 310 Commands: | |
| 311 Delete converts tabs to spaces as it moves back. | |
| 312 Blank lines separate paragraphs. Semicolons start comments. | |
| 313 \\{lisp-mode-map} | |
| 314 Note that `run-lisp' may be used either to start an inferior Lisp job | |
| 315 or to switch back to an existing one. | |
| 316 | |
| 317 Entry to this mode calls the value of `lisp-mode-hook' | |
| 318 if that value is non-nil." | |
| 319 (interactive) | |
| 320 (kill-all-local-variables) | |
| 321 (use-local-map lisp-mode-map) | |
| 322 (setq major-mode 'lisp-mode) | |
| 323 (setq mode-name "Lisp") | |
| 324 (lisp-mode-variables t) | |
| 325 (set-syntax-table lisp-mode-syntax-table) | |
| 326 (run-hooks 'lisp-mode-hook)) | |
| 327 | |
| 328 ;; This will do unless shell.el is loaded. | |
| 329 ;; XEmacs change | |
| 330 (defun lisp-send-defun () | |
| 331 "Send the current defun to the Lisp process made by \\[run-lisp]." | |
| 332 (interactive) | |
| 333 (error "Process lisp does not exist")) | |
| 334 | |
| 335 ;; XEmacs change: emacs-lisp-mode-map is a more appropriate parent. | |
| 336 (defvar lisp-interaction-mode-map () | |
| 337 "Keymap for Lisp Interaction mode. | |
| 338 All commands in `shared-lisp-mode-map' are inherited by this map.") | |
| 339 | |
| 340 (if lisp-interaction-mode-map | |
| 341 () | |
| 342 ;; XEmacs set keymap our way | |
| 343 (setq lisp-interaction-mode-map (make-sparse-keymap)) | |
| 344 (set-keymap-name lisp-interaction-mode-map 'lisp-interaction-mode-map) | |
| 345 (set-keymap-parents lisp-interaction-mode-map (list emacs-lisp-mode-map)) | |
| 346 (define-key lisp-interaction-mode-map "\e\C-x" 'eval-defun) | |
| 347 (define-key lisp-interaction-mode-map "\e\t" 'lisp-complete-symbol) | |
| 348 (define-key lisp-interaction-mode-map "\n" 'eval-print-last-sexp)) | |
| 349 | |
| 350 (defun lisp-interaction-mode () | |
| 351 "Major mode for typing and evaluating Lisp forms. | |
| 352 Like Lisp mode except that \\[eval-print-last-sexp] evals the Lisp expression | |
| 353 before point, and prints its value into the buffer, advancing point. | |
| 354 | |
| 355 Commands: | |
| 356 Delete converts tabs to spaces as it moves back. | |
| 357 Paragraphs are separated only by blank lines. | |
| 358 Semicolons start comments. | |
| 359 \\{lisp-interaction-mode-map} | |
| 360 Entry to this mode calls the value of `lisp-interaction-mode-hook' | |
| 361 if that value is non-nil." | |
| 362 (interactive) | |
| 363 (kill-all-local-variables) | |
| 364 (use-local-map lisp-interaction-mode-map) | |
| 365 (setq major-mode 'lisp-interaction-mode) | |
| 366 (setq mode-name "Lisp Interaction") | |
| 367 ;; XEmacs change | |
| 368 ;; (setq mode-popup-menu lisp-interaction-mode-popup-menu) | |
| 369 (unless lisp-interaction-mode-popup-menu | |
| 370 (easy-menu-define lisp-interaction-mode-popup-menu | |
| 371 lisp-interaction-mode-map | |
| 372 "" | |
| 373 lisp-interaction-mode-popup-menu-1)) | |
| 374 (easy-menu-add lisp-interaction-mode-popup-menu) | |
| 375 | |
| 376 (set-syntax-table emacs-lisp-mode-syntax-table) | |
| 377 (lisp-mode-variables nil) | |
| 378 (run-hooks 'lisp-interaction-mode-hook)) | |
| 379 | |
| 380 (defun eval-print-last-sexp () | |
| 381 "Evaluate sexp before point; print value into current buffer." | |
| 382 (interactive) | |
| 383 (let ((standard-output (current-buffer))) | |
| 384 (terpri) | |
| 385 (eval-last-sexp t) | |
| 386 (terpri))) | |
| 387 | |
| 388 ;; XEmacs change | |
| 389 (defcustom eval-interactive-verbose t | |
| 390 "*Non-nil means that interactive evaluation can print messages. | |
| 391 The messages are printed when the expression is treated differently | |
| 392 using `\\[eval-last-sexp]' and `\\[eval-defun]' than it than it would have been | |
| 393 treated noninteractively. | |
| 394 | |
| 395 The printed messages are \"defvar treated as defconst\" and \"defcustom | |
| 396 evaluation forced\". See `eval-interactive' for more details." | |
| 397 :type 'boolean | |
| 398 :group 'lisp) | |
| 399 | |
| 400 (defun eval-interactive (expr) | |
| 401 "Like `eval' except that it transforms defvars to defconsts. | |
| 402 The evaluation of defcustom forms is forced." | |
| 403 (cond ((and (eq (car-safe expr) 'defvar) | |
| 404 (> (length expr) 2)) | |
| 405 (eval (cons 'defconst (cdr expr))) | |
| 406 (when eval-interactive-verbose | |
| 407 (message "defvar treated as defconst") | |
| 408 (sit-for 1) | |
| 409 (message "")) | |
| 410 (nth 1 expr)) | |
| 411 ((and (eq (car-safe expr) 'defcustom) | |
| 412 (> (length expr) 2) | |
| 413 (default-boundp (nth 1 expr))) | |
| 414 ;; Force variable to be bound | |
| 415 ;; #### defcustom might specify a different :set method. | |
| 416 (set-default (nth 1 expr) (eval (nth 2 expr))) | |
| 417 ;; And evaluate the defcustom | |
| 418 (eval expr) | |
| 419 (when eval-interactive-verbose | |
| 420 (message "defcustom evaluation forced") | |
| 421 (sit-for 1) | |
| 422 (message "")) | |
| 423 (nth 1 expr)) | |
| 424 (t | |
| 425 (eval expr)))) | |
| 426 | |
| 427 ;; XEmacs change, based on Bob Weiner suggestion | |
| 428 (defun eval-last-sexp (eval-last-sexp-arg-internal) ;dynamic scoping wonderment | |
| 429 "Evaluate sexp before point; print value in minibuffer. | |
| 430 With argument, print output into current buffer." | |
| 431 (interactive "P") | |
| 432 (let ((standard-output (if eval-last-sexp-arg-internal (current-buffer) t)) | |
| 433 (opoint (point)) | |
| 434 ignore-quotes) | |
| 435 (prin1 (eval-interactive | |
| 436 (letf (((syntax-table) emacs-lisp-mode-syntax-table)) | |
| 437 (save-excursion | |
| 438 ;; If this sexp appears to be enclosed in `...' then | |
| 439 ;; ignore the surrounding quotes. | |
| 440 (setq ignore-quotes (or (eq (char-after) ?\') | |
| 441 (eq (char-before) ?\'))) | |
| 442 (forward-sexp -1) | |
| 443 ;; vladimir@cs.ualberta.ca 30-Jul-1997: skip ` in | |
| 444 ;; `variable' so that the value is returned, not the | |
| 445 ;; name. | |
| 446 (if (and ignore-quotes | |
| 447 (eq (char-after) ?\`)) | |
| 448 (forward-char)) | |
| 449 (save-restriction | |
| 450 (narrow-to-region (point-min) opoint) | |
| 451 (let ((expr (read (current-buffer)))) | |
| 452 (if (eq (car-safe expr) 'interactive) | |
| 453 ;; If it's an (interactive ...) form, it's | |
| 454 ;; more useful to show how an interactive call | |
| 455 ;; would use it. | |
| 456 `(call-interactively | |
| 457 (lambda (&rest args) | |
| 458 ,expr args)) | |
| 459 expr))))))))) | |
| 460 | |
| 461 (defun eval-defun (eval-defun-arg-internal) | |
| 462 "Evaluate defun that point is in or before. | |
| 463 Print value in minibuffer. | |
| 464 With argument, insert value in current buffer after the defun." | |
| 465 (interactive "P") | |
| 466 (let ((standard-output (if eval-defun-arg-internal (current-buffer) t))) | |
| 467 (prin1 (eval-interactive (save-excursion | |
| 468 (end-of-defun) | |
| 469 (beginning-of-defun) | |
| 470 (read (current-buffer))))))) | |
| 471 | |
| 472 | |
| 473 (defun lisp-comment-indent () | |
| 474 (if (looking-at "\\s<\\s<\\s<") | |
| 475 (current-column) | |
| 476 (if (looking-at "\\s<\\s<") | |
| 477 ;; #### FSF has: | |
| 478 ;; (let ((tem (or (calculate-lisp-indent) (current-column)))) ... | |
| 479 (let ((tem (calculate-lisp-indent))) | |
| 480 (if (listp tem) (car tem) tem)) | |
| 481 (skip-chars-backward " \t") | |
| 482 (max (if (bolp) 0 (1+ (current-column))) | |
| 483 comment-column)))) | |
| 484 | |
| 485 ;; XEmacs change | |
| 486 (defun lisp-indent-for-comment () | |
| 487 "Indent this line's comment appropriately, or insert an empty comment. | |
| 488 If adding a new comment on a blank line, use `block-comment-start' instead | |
| 489 of `comment-start' to open the comment." | |
| 490 ;; by Stig@hackvan.com | |
| 491 ;; #### - This functionality, the recognition of block-comment-{start,end}, | |
| 492 ;; will perhaps be standardized across modes and move to indent-for-comment. | |
| 493 (interactive) | |
| 494 (if (and block-comment-start | |
| 495 (save-excursion (beginning-of-line) (looking-at "^[ \t]*$"))) | |
| 496 (insert block-comment-start)) | |
| 497 (indent-for-comment)) | |
| 498 | |
| 499 (defvar lisp-indent-offset nil) | |
| 500 (defvar lisp-indent-function 'lisp-indent-function) | |
| 501 | |
| 502 (defun lisp-indent-line (&optional whole-exp) | |
| 503 "Indent current line as Lisp code. | |
| 504 With argument, indent any additional lines of the same expression | |
| 505 rigidly along with this one." | |
| 506 (interactive "P") | |
| 507 (let ((indent (calculate-lisp-indent)) shift-amt beg end | |
| 508 (pos (- (point-max) (point)))) | |
| 509 (beginning-of-line) | |
| 510 (setq beg (point)) | |
| 511 (skip-chars-forward " \t") | |
| 512 (if (looking-at "\\s<\\s<\\s<") | |
| 513 ;; Don't alter indentation of a ;;; comment line. | |
| 514 (goto-char (- (point-max) pos)) | |
| 515 (if (and (looking-at "\\s<") (not (looking-at "\\s<\\s<"))) | |
| 516 ;; Single-semicolon comment lines should be indented | |
| 517 ;; as comment lines, not as code. | |
| 518 (progn (indent-for-comment) (forward-char -1)) | |
| 519 (if (listp indent) (setq indent (car indent))) | |
| 520 (setq shift-amt (- indent (current-column))) | |
| 521 (if (zerop shift-amt) | |
| 522 nil | |
| 523 (delete-region beg (point)) | |
| 524 (indent-to indent))) | |
| 525 ;; If initial point was within line's indentation, | |
| 526 ;; position after the indentation. Else stay at same point in text. | |
| 527 (if (> (- (point-max) pos) (point)) | |
| 528 (goto-char (- (point-max) pos))) | |
| 529 ;; If desired, shift remaining lines of expression the same amount. | |
| 530 (and whole-exp (not (zerop shift-amt)) | |
| 531 (save-excursion | |
| 532 (goto-char beg) | |
| 533 (forward-sexp 1) | |
| 534 (setq end (point)) | |
| 535 (goto-char beg) | |
| 536 (forward-line 1) | |
| 537 (setq beg (point)) | |
| 538 (> end beg)) | |
| 539 (indent-code-rigidly beg end shift-amt))))) | |
| 540 | |
| 541 (defvar calculate-lisp-indent-last-sexp) | |
| 542 | |
| 543 (defun calculate-lisp-indent (&optional parse-start) | |
| 544 "Return appropriate indentation for current line as Lisp code. | |
| 545 In usual case returns an integer: the column to indent to. | |
| 546 Can instead return a list, whose car is the column to indent to. | |
| 547 This means that following lines at the same level of indentation | |
| 548 should not necessarily be indented the same way. | |
| 549 The second element of the list is the buffer position | |
| 550 of the start of the containing expression." | |
| 551 (save-excursion | |
| 552 (beginning-of-line) | |
| 553 (let ((indent-point (point)) | |
| 554 ;; XEmacs change (remove paren-depth) | |
| 555 state ;;paren-depth | |
| 556 ;; setting this to a number inhibits calling hook | |
| 557 (desired-indent nil) | |
| 558 (retry t) | |
| 559 calculate-lisp-indent-last-sexp containing-sexp) | |
| 560 (if parse-start | |
| 561 (goto-char parse-start) | |
| 562 (beginning-of-defun)) | |
| 563 ;; Find outermost containing sexp | |
| 564 (while (< (point) indent-point) | |
| 565 (setq state (parse-partial-sexp (point) indent-point 0))) | |
| 566 ;; Find innermost containing sexp | |
| 567 (while (and retry | |
| 568 state | |
| 569 ;; XEmacs change (remove paren-depth) | |
| 570 (> ;;(setq paren-depth (elt state 0)) | |
| 571 (elt state 0) | |
| 572 0)) | |
| 573 (setq retry nil) | |
| 574 (setq calculate-lisp-indent-last-sexp (elt state 2)) | |
| 575 (setq containing-sexp (elt state 1)) | |
| 576 ;; Position following last unclosed open. | |
| 577 (goto-char (1+ containing-sexp)) | |
| 578 ;; Is there a complete sexp since then? | |
| 579 (if (and calculate-lisp-indent-last-sexp | |
| 580 (> calculate-lisp-indent-last-sexp (point))) | |
| 581 ;; Yes, but is there a containing sexp after that? | |
| 582 (let ((peek (parse-partial-sexp calculate-lisp-indent-last-sexp | |
| 583 indent-point 0))) | |
| 584 (if (setq retry (car (cdr peek))) (setq state peek))))) | |
| 585 (if retry | |
| 586 nil | |
| 587 ;; Innermost containing sexp found | |
| 588 (goto-char (1+ containing-sexp)) | |
| 589 (if (not calculate-lisp-indent-last-sexp) | |
| 590 ;; indent-point immediately follows open paren. | |
| 591 ;; Don't call hook. | |
| 592 (setq desired-indent (current-column)) | |
| 593 ;; Find the start of first element of containing sexp. | |
| 594 (parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t) | |
| 595 (cond ((looking-at "\\s(") | |
| 596 ;; First element of containing sexp is a list. | |
| 597 ;; Indent under that list. | |
| 598 ) | |
| 599 ((> (save-excursion (forward-line 1) (point)) | |
| 600 calculate-lisp-indent-last-sexp) | |
| 601 ;; This is the first line to start within the containing sexp. | |
| 602 ;; It's almost certainly a function call. | |
| 603 (if (= (point) calculate-lisp-indent-last-sexp) | |
| 604 ;; Containing sexp has nothing before this line | |
| 605 ;; except the first element. Indent under that element. | |
| 606 nil | |
| 607 ;; Skip the first element, find start of second (the first | |
| 608 ;; argument of the function call) and indent under. | |
| 609 (progn (forward-sexp 1) | |
| 610 (parse-partial-sexp (point) | |
| 611 calculate-lisp-indent-last-sexp | |
| 612 0 t))) | |
| 613 (backward-prefix-chars)) | |
| 614 (t | |
| 615 ;; Indent beneath first sexp on same line as | |
| 616 ;; calculate-lisp-indent-last-sexp. Again, it's | |
| 617 ;; almost certainly a function call. | |
| 618 (goto-char calculate-lisp-indent-last-sexp) | |
| 619 (beginning-of-line) | |
| 620 (parse-partial-sexp (point) calculate-lisp-indent-last-sexp | |
| 621 0 t) | |
| 622 (backward-prefix-chars))))) | |
| 623 ;; Point is at the point to indent under unless we are inside a string. | |
| 624 ;; Call indentation hook except when overridden by lisp-indent-offset | |
| 625 ;; or if the desired indentation has already been computed. | |
| 626 (let ((normal-indent (current-column))) | |
| 627 (cond ((elt state 3) | |
| 628 ;; Inside a string, don't change indentation. | |
| 629 (goto-char indent-point) | |
| 630 (skip-chars-forward " \t") | |
| 631 (current-column)) | |
| 632 (desired-indent) | |
| 633 ((and (boundp 'lisp-indent-function) | |
| 634 lisp-indent-function | |
| 635 (not retry)) | |
| 636 (or (funcall lisp-indent-function indent-point state) | |
| 637 normal-indent)) | |
| 638 ;; XEmacs change: | |
| 639 ;; lisp-indent-offset shouldn't override lisp-indent-function ! | |
| 640 ((and (integerp lisp-indent-offset) containing-sexp) | |
| 641 ;; Indent by constant offset | |
| 642 (goto-char containing-sexp) | |
| 643 (+ normal-indent lisp-indent-offset)) | |
| 644 (t | |
| 645 normal-indent)))))) | |
| 646 | |
| 647 (defun lisp-indent-function (indent-point state) | |
| 648 ;; free reference to `calculate-lisp-indent-last-sexp' | |
| 649 ;; in #'calculate-lisp-indent | |
| 650 (let ((normal-indent (current-column))) | |
| 651 (goto-char (1+ (elt state 1))) | |
| 652 (parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t) | |
| 653 (if (and (elt state 2) | |
| 654 (not (looking-at "\\sw\\|\\s_"))) | |
| 655 ;; car of form doesn't seem to be a a symbol | |
| 656 (progn | |
| 657 (if (not (> (save-excursion (forward-line 1) (point)) | |
| 658 calculate-lisp-indent-last-sexp)) | |
| 659 (progn (goto-char calculate-lisp-indent-last-sexp) | |
| 660 (beginning-of-line) | |
| 661 (parse-partial-sexp (point) | |
| 662 calculate-lisp-indent-last-sexp 0 t))) | |
| 663 ;; Indent under the list or under the first sexp on the same | |
| 664 ;; line as calculate-lisp-indent-last-sexp. Note that first | |
| 665 ;; thing on that line has to be complete sexp since we are | |
| 666 ;; inside the innermost containing sexp. | |
| 667 (backward-prefix-chars) | |
| 668 (current-column)) | |
| 669 (let ((function (buffer-substring (point) | |
| 670 (progn (forward-sexp 1) (point)))) | |
| 671 method) | |
| 672 (setq method (or (get (intern-soft function) 'lisp-indent-function) | |
| 673 (get (intern-soft function) 'lisp-indent-hook))) | |
| 674 (cond ((or (eq method 'defun) | |
| 675 (and (null method) | |
| 676 (> (length function) 3) | |
| 677 (string-match "\\`def" function))) | |
| 678 (lisp-indent-defform state indent-point)) | |
| 679 ((integerp method) | |
| 680 (lisp-indent-specform method state | |
| 681 indent-point normal-indent)) | |
| 682 (method | |
| 683 (funcall method state indent-point))))))) | |
| 684 | |
| 685 (defvar lisp-body-indent 2 | |
| 686 "Number of columns to indent the second line of a `(def...)' form.") | |
| 687 | |
| 688 (defun lisp-indent-specform (count state indent-point normal-indent) | |
| 689 (let ((containing-form-start (elt state 1)) | |
| 690 (i count) | |
| 691 body-indent containing-form-column) | |
| 692 ;; Move to the start of containing form, calculate indentation | |
| 693 ;; to use for non-distinguished forms (> count), and move past the | |
| 694 ;; function symbol. lisp-indent-function guarantees that there is at | |
| 695 ;; least one word or symbol character following open paren of containing | |
| 696 ;; form. | |
| 697 (goto-char containing-form-start) | |
| 698 (setq containing-form-column (current-column)) | |
| 699 (setq body-indent (+ lisp-body-indent containing-form-column)) | |
| 700 (forward-char 1) | |
| 701 (forward-sexp 1) | |
| 702 ;; Now find the start of the last form. | |
| 703 (parse-partial-sexp (point) indent-point 1 t) | |
| 704 (while (and (< (point) indent-point) | |
| 705 (condition-case () | |
| 706 (progn | |
| 707 (setq count (1- count)) | |
| 708 (forward-sexp 1) | |
| 709 (parse-partial-sexp (point) indent-point 1 t)) | |
| 710 (error nil)))) | |
| 711 ;; Point is sitting on first character of last (or count) sexp. | |
| 712 (if (> count 0) | |
| 713 ;; A distinguished form. If it is the first or second form use double | |
| 714 ;; lisp-body-indent, else normal indent. With lisp-body-indent bound | |
| 715 ;; to 2 (the default), this just happens to work the same with if as | |
| 716 ;; the older code, but it makes unwind-protect, condition-case, | |
| 717 ;; with-output-to-temp-buffer, et. al. much more tasteful. The older, | |
| 718 ;; less hacked, behavior can be obtained by replacing below with | |
| 719 ;; (list normal-indent containing-form-start). | |
| 720 (if (<= (- i count) 1) | |
| 721 (list (+ containing-form-column (* 2 lisp-body-indent)) | |
| 722 containing-form-start) | |
| 723 (list normal-indent containing-form-start)) | |
| 724 ;; A non-distinguished form. Use body-indent if there are no | |
| 725 ;; distinguished forms and this is the first undistinguished form, | |
| 726 ;; or if this is the first undistinguished form and the preceding | |
| 727 ;; distinguished form has indentation at least as great as body-indent. | |
| 728 (if (or (and (= i 0) (= count 0)) | |
| 729 (and (= count 0) (<= body-indent normal-indent))) | |
| 730 body-indent | |
| 731 normal-indent)))) | |
| 732 | |
| 733 (defun lisp-indent-defform (state indent-point) | |
| 734 (goto-char (car (cdr state))) | |
| 735 (forward-line 1) | |
| 736 (if (> (point) (car (cdr (cdr state)))) | |
| 737 (progn | |
| 738 (goto-char (car (cdr state))) | |
| 739 (+ lisp-body-indent (current-column))))) | |
| 740 | |
| 741 | |
| 742 ;; (put 'progn 'lisp-indent-function 0), say, causes progn to be indented | |
| 743 ;; like defun if the first form is placed on the next line, otherwise | |
| 744 ;; it is indented like any other form (i.e. forms line up under first). | |
| 745 | |
| 746 (put 'lambda 'lisp-indent-function 'defun) | |
| 747 (put 'autoload 'lisp-indent-function 'defun) | |
| 748 (put 'progn 'lisp-indent-function 0) | |
| 749 (put 'prog1 'lisp-indent-function 1) | |
| 750 (put 'prog2 'lisp-indent-function 2) | |
| 751 (put 'save-excursion 'lisp-indent-function 0) | |
| 752 (put 'save-window-excursion 'lisp-indent-function 0) | |
| 753 (put 'save-selected-window 'lisp-indent-function 0) | |
| 754 (put 'save-selected-frame 'lisp-indent-function 0) | |
| 755 (put 'with-selected-frame 'lisp-indent-function 1) | |
| 756 (put 'save-restriction 'lisp-indent-function 0) | |
| 757 (put 'save-match-data 'lisp-indent-function 0) | |
| 758 (put 'let 'lisp-indent-function 1) | |
| 759 (put 'let* 'lisp-indent-function 1) | |
| 760 (put 'let-specifier 'lisp-indent-function 1) | |
| 761 (put 'while 'lisp-indent-function 1) | |
| 762 (put 'if 'lisp-indent-function 2) | |
| 763 (put 'catch 'lisp-indent-function 1) | |
| 764 (put 'condition-case 'lisp-indent-function 2) | |
| 765 (put 'call-with-condition-handler 'lisp-indent-function 2) | |
| 766 (put 'unwind-protect 'lisp-indent-function 1) | |
| 767 (put 'save-current-buffer 'lisp-indent-function 0) | |
| 768 (put 'with-current-buffer 'lisp-indent-function 1) | |
| 769 (put 'with-string-as-buffer-contents 'lisp-indent-function 1) | |
| 770 (put 'with-temp-file 'lisp-indent-function 1) | |
| 771 (put 'with-temp-buffer 'lisp-indent-function 0) | |
| 772 (put 'with-output-to-string 'lisp-indent-function 0) | |
| 773 (put 'with-output-to-temp-buffer 'lisp-indent-function 1) | |
| 774 (put 'eval-after-load 'lisp-indent-function 1) | |
| 775 (put 'display-message 'lisp-indent-function 1) | |
| 776 (put 'display-warning 'lisp-indent-function 1) | |
| 777 (put 'lmessage 'lisp-indent-function 2) | |
| 778 (put 'lwarn 'lisp-indent-function 2) | |
| 779 (put 'global-set-key 'lisp-indent-function 1) | |
| 780 | |
| 781 (defun indent-sexp (&optional endpos) | |
| 782 "Indent each line of the list starting just after point. | |
| 783 If optional arg ENDPOS is given, indent each line, stopping when | |
| 784 ENDPOS is encountered." | |
| 785 (interactive) | |
| 786 (let ((indent-stack (list nil)) | |
| 787 (next-depth 0) | |
| 788 ;; If ENDPOS is non-nil, use nil as STARTING-POINT | |
| 789 ;; so that calculate-lisp-indent will find the beginning of | |
| 790 ;; the defun we are in. | |
| 791 ;; If ENDPOS is nil, it is safe not to scan before point | |
| 792 ;; since every line we indent is more deeply nested than point is. | |
| 793 (starting-point (if endpos nil (point))) | |
| 794 (last-point (point)) | |
| 795 last-depth bol outer-loop-done inner-loop-done state this-indent) | |
| 796 (or endpos | |
| 797 ;; Get error now if we don't have a complete sexp after point. | |
| 798 (save-excursion (forward-sexp 1))) | |
| 799 (save-excursion | |
| 800 (setq outer-loop-done nil) | |
| 801 (while (if endpos (< (point) endpos) | |
| 802 (not outer-loop-done)) | |
| 803 (setq last-depth next-depth | |
| 804 inner-loop-done nil) | |
| 805 ;; Parse this line so we can learn the state | |
| 806 ;; to indent the next line. | |
| 807 ;; This inner loop goes through only once | |
| 808 ;; unless a line ends inside a string. | |
| 809 (while (and (not inner-loop-done) | |
| 810 (not (setq outer-loop-done (eobp)))) | |
| 811 (setq state (parse-partial-sexp (point) (progn (end-of-line) (point)) | |
| 812 nil nil state)) | |
| 813 (setq next-depth (car state)) | |
| 814 ;; If the line contains a comment other than the sort | |
| 815 ;; that is indented like code, | |
| 816 ;; indent it now with indent-for-comment. | |
| 817 ;; Comments indented like code are right already. | |
| 818 ;; In any case clear the in-comment flag in the state | |
| 819 ;; because parse-partial-sexp never sees the newlines. | |
| 820 (if (car (nthcdr 4 state)) | |
| 821 (progn (indent-for-comment) | |
| 822 (end-of-line) | |
| 823 (setcar (nthcdr 4 state) nil))) | |
| 824 ;; If this line ends inside a string, | |
| 825 ;; go straight to next line, remaining within the inner loop, | |
| 826 ;; and turn off the \-flag. | |
| 827 (if (car (nthcdr 3 state)) | |
| 828 (progn | |
| 829 (forward-line 1) | |
| 830 (setcar (nthcdr 5 state) nil)) | |
| 831 (setq inner-loop-done t))) | |
| 832 (and endpos | |
| 833 (<= next-depth 0) | |
| 834 (progn | |
| 835 (setq indent-stack (append indent-stack | |
| 836 (make-list (- next-depth) nil)) | |
| 837 last-depth (- last-depth next-depth) | |
| 838 next-depth 0))) | |
| 839 (or outer-loop-done endpos | |
| 840 (setq outer-loop-done (<= next-depth 0))) | |
| 841 (if outer-loop-done | |
| 842 (forward-line 1) | |
| 843 (while (> last-depth next-depth) | |
| 844 (setq indent-stack (cdr indent-stack) | |
| 845 last-depth (1- last-depth))) | |
| 846 (while (< last-depth next-depth) | |
| 847 (setq indent-stack (cons nil indent-stack) | |
| 848 last-depth (1+ last-depth))) | |
| 849 ;; Now go to the next line and indent it according | |
| 850 ;; to what we learned from parsing the previous one. | |
| 851 (forward-line 1) | |
| 852 (setq bol (point)) | |
| 853 (skip-chars-forward " \t") | |
| 854 ;; But not if the line is blank, or just a comment | |
| 855 ;; (except for double-semi comments; indent them as usual). | |
| 856 (if (or (eobp) (looking-at "\\s<\\|\n")) | |
| 857 nil | |
| 858 (if (and (car indent-stack) | |
| 859 (>= (car indent-stack) 0)) | |
| 860 (setq this-indent (car indent-stack)) | |
| 861 (let ((val (calculate-lisp-indent | |
| 862 (if (car indent-stack) (- (car indent-stack)) | |
| 863 starting-point)))) | |
| 864 (if (integerp val) | |
| 865 (setcar indent-stack | |
| 866 (setq this-indent val)) | |
| 867 (setcar indent-stack (- (car (cdr val)))) | |
| 868 (setq this-indent (car val))))) | |
| 869 (if (/= (current-column) this-indent) | |
| 870 (progn (delete-region bol (point)) | |
| 871 (indent-to this-indent))))) | |
| 872 (or outer-loop-done | |
| 873 (setq outer-loop-done (= (point) last-point)) | |
| 874 (setq last-point (point))))))) | |
| 875 | |
| 876 ;; Indent every line whose first char is between START and END inclusive. | |
| 877 (defun lisp-indent-region (start end) | |
| 878 (save-excursion | |
| 879 (let ((endmark (copy-marker end))) | |
| 880 (goto-char start) | |
| 881 (and (bolp) (not (eolp)) | |
| 882 (lisp-indent-line)) | |
| 883 (indent-sexp endmark) | |
| 884 (set-marker endmark nil)))) | |
| 885 | |
| 886 ;;;; Lisp paragraph filling commands. | |
| 887 | |
| 888 (defun lisp-fill-paragraph (&optional justify) | |
| 889 "Like \\[fill-paragraph], but handle Emacs Lisp comments. | |
| 890 If any of the current line is a comment, fill the comment or the | |
| 891 paragraph of it that point is in, preserving the comment's indentation | |
| 892 and initial semicolons." | |
| 893 (interactive "P") | |
| 894 (let ( | |
| 895 ;; Non-nil if the current line contains a comment. | |
| 896 has-comment | |
| 897 | |
| 898 ;; Non-nil if the current line contains code and a comment. | |
| 899 has-code-and-comment | |
| 900 | |
| 901 ;; If has-comment, the appropriate fill-prefix for the comment. | |
| 902 comment-fill-prefix | |
| 903 ) | |
| 904 | |
| 905 ;; Figure out what kind of comment we are looking at. | |
| 906 (save-excursion | |
| 907 (beginning-of-line) | |
| 908 (cond | |
| 909 | |
| 910 ;; A line with nothing but a comment on it? | |
| 911 ((looking-at "[ \t]*;[; \t]*") | |
| 912 (setq has-comment t | |
| 913 comment-fill-prefix (buffer-substring (match-beginning 0) | |
| 914 (match-end 0)))) | |
| 915 | |
| 916 ;; A line with some code, followed by a comment? Remember that the | |
| 917 ;; semi which starts the comment shouldn't be part of a string or | |
| 918 ;; character. | |
| 919 ;; XEmacs Try this the FSF and see if it works. | |
| 920 ; ((progn | |
| 921 ; (while (not (looking-at ";\\|$")) | |
| 922 ; (skip-chars-forward "^;\n\"\\\\?") | |
| 923 ; (cond | |
| 924 ; ((eq (char-after (point)) ?\\) (forward-char 2)) | |
| 925 ; ((memq (char-after (point)) '(?\" ??)) (forward-sexp 1)))) | |
| 926 ; (looking-at ";+[\t ]*")) | |
| 927 ; (setq has-comment t) | |
| 928 ((condition-case nil | |
| 929 (save-restriction | |
| 930 (narrow-to-region (point-min) | |
| 931 (save-excursion (end-of-line) (point))) | |
| 932 (while (not (looking-at ";\\|$")) | |
| 933 (skip-chars-forward "^;\n\"\\\\?") | |
| 934 (cond | |
| 935 ((eq (char-after (point)) ?\\) (forward-char 2)) | |
| 936 ((memq (char-after (point)) '(?\" ??)) (forward-sexp 1)))) | |
| 937 (looking-at ";+[\t ]*")) | |
| 938 (error nil)) | |
| 939 (setq has-comment t has-code-and-comment t) | |
| 940 (setq comment-fill-prefix | |
| 941 (concat (make-string (/ (current-column) 8) ?\t) | |
| 942 (make-string (% (current-column) 8) ?\ ) | |
| 943 (buffer-substring (match-beginning 0) (match-end 0))))))) | |
| 944 | |
| 945 (if (not has-comment) | |
| 946 (fill-paragraph justify) | |
| 947 | |
| 948 ;; Narrow to include only the comment, and then fill the region. | |
| 949 (save-excursion | |
| 950 (save-restriction | |
| 951 (beginning-of-line) | |
| 952 (narrow-to-region | |
| 953 ;; Find the first line we should include in the region to fill. | |
| 954 (save-excursion | |
| 955 (while (and (zerop (forward-line -1)) | |
| 956 (looking-at "^[ \t]*;"))) | |
| 957 ;; We may have gone too far. Go forward again. | |
| 958 (or (looking-at ".*;") | |
| 959 (forward-line 1)) | |
| 960 (point)) | |
| 961 ;; Find the beginning of the first line past the region to fill. | |
| 962 (save-excursion | |
| 963 (while (progn (forward-line 1) | |
| 964 (looking-at "^[ \t]*;"))) | |
| 965 (point))) | |
| 966 | |
| 967 ;; Lines with only semicolons on them can be paragraph boundaries. | |
| 968 (let* ((paragraph-start (concat paragraph-start "\\|[ \t;]*$")) | |
| 969 (paragraph-separate (concat paragraph-start "\\|[ \t;]*$")) | |
| 970 (paragraph-ignore-fill-prefix nil) | |
| 971 (fill-prefix comment-fill-prefix) | |
| 972 (after-line (if has-code-and-comment | |
| 973 (save-excursion | |
| 974 (forward-line 1) (point)))) | |
| 975 (end (progn | |
| 976 (forward-paragraph) | |
| 977 (or (bolp) (newline 1)) | |
| 978 (point))) | |
| 979 ;; If this comment starts on a line with code, | |
| 980 ;; include that like in the filling. | |
| 981 (beg (progn (backward-paragraph) | |
| 982 (if (eq (point) after-line) | |
| 983 (forward-line -1)) | |
| 984 (point)))) | |
| 985 (fill-region-as-paragraph beg end | |
| 986 justify nil | |
| 987 (save-excursion | |
| 988 (goto-char beg) | |
| 989 (if (looking-at fill-prefix) | |
| 990 nil | |
| 991 (re-search-forward comment-start-skip) | |
| 992 (point)))))))) | |
| 993 t)) | |
| 994 | |
| 995 (defun indent-code-rigidly (start end arg &optional nochange-regexp) | |
| 996 "Indent all lines of code, starting in the region, sideways by ARG columns. | |
| 997 Does not affect lines starting inside comments or strings, assuming that | |
| 998 the start of the region is not inside them. | |
| 999 | |
| 1000 Called from a program, takes args START, END, COLUMNS and NOCHANGE-REGEXP. | |
| 1001 The last is a regexp which, if matched at the beginning of a line, | |
| 1002 means don't indent that line." | |
| 1003 (interactive "r\np") | |
| 1004 (let (state) | |
| 1005 (save-excursion | |
| 1006 (goto-char end) | |
| 1007 (setq end (point-marker)) | |
| 1008 (goto-char start) | |
| 1009 (or (bolp) | |
| 1010 (setq state (parse-partial-sexp (point) | |
| 1011 (progn | |
| 1012 (forward-line 1) (point)) | |
| 1013 nil nil state))) | |
| 1014 (while (< (point) end) | |
| 1015 (or (car (nthcdr 3 state)) | |
| 1016 (and nochange-regexp | |
| 1017 (looking-at nochange-regexp)) | |
| 1018 ;; If line does not start in string, indent it | |
| 1019 (let ((indent (current-indentation))) | |
| 1020 (delete-region (point) (progn (skip-chars-forward " \t") (point))) | |
| 1021 (or (eolp) | |
| 1022 (indent-to (max 0 (+ indent arg)) 0)))) | |
| 1023 (setq state (parse-partial-sexp (point) | |
| 1024 (progn | |
| 1025 (forward-line 1) (point)) | |
| 1026 nil nil state)))))) | |
| 1027 | |
| 1028 (provide 'lisp-mode) | |
| 1029 | |
| 1030 ;;; lisp-mode.el ends here |