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annotate lisp/indent.el @ 5940:c608d4b0b75e cygwin64 tip
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| author | Henry Thompson <ht@markup.co.uk> |
|---|---|
| date | Thu, 16 Dec 2021 18:48:58 +0000 |
| parents | b7ae5f44b950 |
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| rev | line source |
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| 428 | 1 ;;; indent.el --- indentation commands for XEmacs |
| 2 | |
| 3 ;; Copyright (C) 1985, 1992, 1993, 1995, 1997 Free Software Foundation, Inc. | |
| 814 | 4 ;; Copyright (C) 2002 Ben Wing. |
| 428 | 5 |
| 6 ;; Maintainer: FSF | |
| 7 ;; Keywords: lisp, languages, tools, dumped | |
| 8 | |
| 9 ;; This file is part of XEmacs. | |
| 10 | |
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11 ;; XEmacs is free software: you can redistribute it and/or modify it |
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12 ;; under the terms of the GNU General Public License as published by the |
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13 ;; Free Software Foundation, either version 3 of the License, or (at your |
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14 ;; option) any later version. |
| 428 | 15 |
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16 ;; XEmacs is distributed in the hope that it will be useful, but WITHOUT |
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17 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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18 ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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19 ;; for more details. |
| 428 | 20 |
| 21 ;; You should have received a copy of the GNU General Public License | |
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22 ;; along with XEmacs. If not, see <http://www.gnu.org/licenses/>. |
| 428 | 23 |
| 24 ;;; Synched up with: FSF 19.30. | |
| 25 | |
| 26 ;;; Commentary: | |
| 27 | |
| 28 ;; This file is dumped with XEmacs. | |
| 29 | |
| 30 ;; Commands for making and changing indentation in text. These are | |
| 31 ;; described in the XEmacs Reference Manual. | |
| 32 | |
| 33 ;; 06/11/1997 - Convert (preceding|following)-char to char-(before|after) -slb | |
| 34 | |
| 35 ;;; Code: | |
| 36 | |
| 37 (defvar standard-indent 4 "\ | |
| 38 Default number of columns for margin-changing functions to indent.") | |
| 39 | |
| 40 (defvar indent-line-function 'indent-to-left-margin | |
| 41 "Function to indent current line.") | |
| 42 | |
| 43 (defun indent-according-to-mode () | |
| 44 "Indent line in proper way for current major mode." | |
| 45 (interactive) | |
| 46 (funcall indent-line-function)) | |
| 47 | |
| 48 (defun indent-for-tab-command (&optional prefix-arg) | |
| 49 "Indent line in proper way for current major mode." | |
| 50 (interactive "P") | |
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51 (labels |
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52 ((insert-tab (&optional prefix-arg) |
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53 (let ((count (prefix-numeric-value prefix-arg))) |
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54 (if abbrev-mode |
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55 (expand-abbrev)) |
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56 (if indent-tabs-mode |
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57 (insert-char ?\t count) |
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58 ;; XEmacs: (Need the `1+') |
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59 (indent-to (* tab-width (1+ (/ (current-column) tab-width)))))))) |
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60 (if (eq indent-line-function 'indent-to-left-margin) |
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61 (insert-tab prefix-arg) |
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62 (if prefix-arg |
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63 (funcall indent-line-function prefix-arg) |
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64 (funcall indent-line-function))))) |
| 428 | 65 |
| 444 | 66 (defun indent-rigidly (start end count) |
| 67 "Indent all lines starting in the region sideways by COUNT columns. | |
| 68 Called from a program, takes three arguments, START, END and COUNT." | |
| 428 | 69 (interactive "r\np") |
| 70 (save-excursion | |
| 71 (goto-char end) | |
| 72 (setq end (point-marker)) | |
| 73 (goto-char start) | |
| 74 (or (bolp) (forward-line 1)) | |
| 75 (while (< (point) end) | |
| 76 (let ((indent (current-indentation)) | |
| 77 eol-flag) | |
| 78 (save-excursion | |
| 79 (skip-chars-forward " \t") | |
| 80 (setq eol-flag (eolp))) | |
| 81 (or eol-flag | |
| 444 | 82 (indent-to (max 0 (+ indent count)) 0)) |
| 428 | 83 (delete-region (point) (progn (skip-chars-forward " \t") (point)))) |
| 84 (forward-line 1)) | |
| 85 (move-marker end nil) | |
| 86 (setq zmacs-region-stays nil))) ; XEmacs | |
| 87 | |
| 88 (defun indent-line-to (column) | |
| 89 "Indent current line to COLUMN. | |
| 90 This function removes or adds spaces and tabs at beginning of line | |
| 91 only if necessary. It leaves point at end of indentation." | |
| 92 (back-to-indentation) | |
| 93 (let ((cur-col (current-column))) | |
| 94 (cond ((< cur-col column) | |
| 95 (if (>= (- column (* (/ cur-col tab-width) tab-width)) tab-width) | |
| 96 (delete-region (point) | |
| 97 (progn (skip-chars-backward " ") (point)))) | |
| 98 (indent-to column)) | |
| 99 ((> cur-col column) ; too far right (after tab?) | |
| 100 (delete-region (progn (move-to-column column t) (point)) | |
| 101 (progn (back-to-indentation) (point))))))) | |
| 102 | |
| 103 (defun current-left-margin () | |
| 104 "Return the left margin to use for this line. | |
| 105 This is the value of the buffer-local variable `left-margin' plus the value | |
| 106 of the `left-margin' text-property at the start of the line." | |
| 107 (save-excursion | |
| 108 (back-to-indentation) | |
| 109 (max 0 | |
| 110 (+ left-margin (or (get-text-property | |
| 111 (if (and (eobp) (not (bobp))) | |
| 112 (1- (point)) (point)) | |
| 113 'left-margin) 0))))) | |
| 114 | |
| 115 (defun move-to-left-margin (&optional n force) | |
| 116 "Move to the left margin of the current line. | |
| 117 With optional argument, move forward N-1 lines first. | |
| 118 The column moved to is the one given by the `current-left-margin' function. | |
| 119 If the line's indentation appears to be wrong, and this command is called | |
| 120 interactively or with optional argument FORCE, it will be fixed." | |
| 121 (interactive (list (prefix-numeric-value current-prefix-arg) t)) | |
| 122 (beginning-of-line n) | |
| 123 (skip-chars-forward " \t") | |
| 124 (let ((lm (current-left-margin)) | |
| 125 (cc (current-column))) | |
| 126 (cond ((> cc lm) | |
| 127 (if (> (move-to-column lm force) lm) | |
| 128 ;; If lm is in a tab and we are not forcing, move before tab | |
| 129 (backward-char 1))) | |
| 130 ((and force (< cc lm)) | |
| 131 (indent-to-left-margin))))) | |
| 132 | |
| 133 ;; This is the default indent-line-function, | |
| 134 ;; used in Fundamental Mode, Text Mode, etc. | |
| 135 (defun indent-to-left-margin () | |
| 136 "Indent current line to the column given by `current-left-margin'." | |
| 137 (indent-line-to (current-left-margin))) | |
| 138 | |
| 139 (defun delete-to-left-margin (&optional from to) | |
| 140 "Remove left margin indentation from a region. | |
| 444 | 141 The amount of indentation to delete is determined by calling the |
| 142 function `current-left-margin'. | |
| 428 | 143 In no case will it delete non-whitespace. |
| 144 Args FROM and TO are optional; default is the whole buffer." | |
| 145 (save-excursion | |
| 146 (goto-char (or to (point-max))) | |
| 147 (setq to (point-marker)) | |
| 148 (goto-char (or from (point-min))) | |
| 149 (or (bolp) (forward-line 1)) | |
| 150 (while (< (point) to) | |
| 151 (delete-region (point) (progn (move-to-left-margin nil t) (point))) | |
| 152 (forward-line 1)) | |
| 153 (move-marker to nil))) | |
| 154 | |
| 155 (defun set-left-margin (from to lm) | |
| 156 "Set the left margin of the region to WIDTH. | |
| 157 If `auto-fill-mode' is active, re-fill the region to fit the new margin." | |
| 158 (interactive "r\nNSet left margin to column: ") | |
| 159 (if (interactive-p) (setq lm (prefix-numeric-value lm))) | |
| 160 (save-excursion | |
| 161 ;; If inside indentation, start from BOL. | |
| 162 (goto-char from) | |
| 163 (skip-chars-backward " \t") | |
| 164 (if (bolp) (setq from (point))) | |
| 165 ;; Place end after whitespace | |
| 166 (goto-char to) | |
| 167 (skip-chars-forward " \t") | |
| 168 (setq to (point-marker))) | |
| 169 ;; Delete margin indentation first, but keep paragraph indentation. | |
| 170 (delete-to-left-margin from to) | |
| 171 (put-text-property from to 'left-margin lm) | |
| 172 (indent-rigidly from to lm) | |
| 173 (if auto-fill-function (save-excursion (fill-region from to nil t t))) | |
| 174 (move-marker to nil)) | |
| 175 | |
| 176 (defun set-right-margin (from to lm) | |
| 177 "Set the right margin of the region to WIDTH. | |
| 178 If `auto-fill-mode' is active, re-fill the region to fit the new margin." | |
| 179 (interactive "r\nNSet right margin to width: ") | |
| 180 (if (interactive-p) (setq lm (prefix-numeric-value lm))) | |
| 181 (save-excursion | |
| 182 (goto-char from) | |
| 183 (skip-chars-backward " \t") | |
| 184 (if (bolp) (setq from (point)))) | |
| 185 (put-text-property from to 'right-margin lm) | |
| 186 (if auto-fill-function (save-excursion (fill-region from to nil t t)))) | |
| 187 | |
| 188 (defun alter-text-property (from to prop func &optional object) | |
| 189 "Programmatically change value of a text-property. | |
| 190 For each region between FROM and TO that has a single value for PROPERTY, | |
| 191 apply FUNCTION to that value and sets the property to the function's result. | |
| 192 Optional fifth argument OBJECT specifies the string or buffer to operate on." | |
| 193 (let ((begin from) | |
| 194 end val) | |
| 195 (while (setq val (get-text-property begin prop object) | |
| 196 end (text-property-not-all begin to prop val object)) | |
| 197 (put-text-property begin end prop (funcall func val) object) | |
| 198 (setq begin end)) | |
| 199 (if (< begin to) | |
| 200 (put-text-property begin to prop (funcall func val) object)))) | |
| 201 | |
| 202 (defun increase-left-margin (from to inc) | |
| 203 "Increase or decrease the left-margin of the region. | |
| 204 With no prefix argument, this adds `standard-indent' of indentation. | |
| 205 A prefix arg (optional third arg INC noninteractively) specifies the amount | |
| 206 to change the margin by, in characters. | |
| 207 If `auto-fill-mode' is active, re-fill the region to fit the new margin." | |
| 208 (interactive "*r\nP") | |
| 209 (setq inc (if inc (prefix-numeric-value inc) standard-indent)) | |
| 210 (save-excursion | |
| 211 (goto-char from) | |
| 212 (skip-chars-backward " \t") | |
| 213 (if (bolp) (setq from (point))) | |
| 214 (goto-char to) | |
| 215 (setq to (point-marker))) | |
| 216 (alter-text-property from (marker-position to) 'left-margin ; XEmacs | |
| 217 (lambda (v) (max (- left-margin) (+ inc (or v 0))))) | |
| 218 (indent-rigidly from (marker-position to) inc) ; XEmacs | |
| 219 (if auto-fill-function | |
| 220 (save-excursion | |
| 221 (fill-region from (marker-position to) nil t t))) ; XEmacs | |
| 222 (move-marker to nil)) | |
| 223 | |
| 224 (defun decrease-left-margin (from to inc) | |
| 225 "Make the left margin of the region smaller. | |
| 226 With no prefix argument, decrease the indentation by `standard-indent'. | |
| 227 A prefix arg (optional third arg INC noninteractively) specifies the amount | |
| 228 to change the margin by, in characters. | |
| 229 If `auto-fill-mode' is active, re-fill the region to fit the new margin." | |
| 230 (interactive "*r\nP") | |
| 231 (setq inc (if inc (prefix-numeric-value inc) standard-indent)) | |
| 232 (increase-left-margin from to (- inc))) | |
| 233 | |
| 234 (defun increase-right-margin (from to inc) | |
| 235 "Increase the right-margin of the region. | |
| 236 With no prefix argument, increase the right margin by `standard-indent'. | |
| 237 A prefix arg (optional third arg INC noninteractively) specifies the amount | |
| 238 to change the margin by, in characters. A negative argument decreases | |
| 239 the right margin width. | |
| 240 If `auto-fill-mode' is active, re-fill the region to fit the new margin." | |
| 241 (interactive "r\nP") | |
| 242 (if (interactive-p) | |
| 243 (setq inc (if inc (prefix-numeric-value current-prefix-arg) | |
| 244 standard-indent))) | |
| 245 (save-excursion | |
| 246 (alter-text-property from to 'right-margin | |
| 247 (lambda (v) (+ inc (or v 0)))) | |
| 248 (if auto-fill-function | |
| 249 (fill-region from to nil t t)))) | |
| 250 | |
| 251 (defun decrease-right-margin (from to inc) | |
| 252 "Make the right margin of the region smaller. | |
| 253 With no prefix argument, decrease the right margin by `standard-indent'. | |
| 254 A prefix arg (optional third arg INC noninteractively) specifies the amount | |
| 255 of width to remove, in characters. A negative argument increases | |
| 256 the right margin width. | |
| 257 If `auto-fill-mode' is active, re-fills region to fit in new margin." | |
| 258 (interactive "*r\nP") | |
| 259 (setq inc (if inc (prefix-numeric-value inc) standard-indent)) | |
| 260 (increase-right-margin from to (- inc))) | |
| 261 | |
| 262 (defun beginning-of-line-text (&optional n) | |
| 263 "Move to the beginning of the text on this line. | |
| 264 With optional argument, move forward N-1 lines first. | |
| 265 From the beginning of the line, moves past the left-margin indentation, the | |
| 266 fill-prefix, and any indentation used for centering or right-justifying the | |
| 444 | 267 line, but does not move past any whitespace that was explicitly inserted |
| 428 | 268 \(such as a tab used to indent the first line of a paragraph)." |
| 269 (interactive "p") | |
| 270 (beginning-of-line n) | |
| 271 (skip-chars-forward " \t") | |
| 272 ;; Skip over fill-prefix. | |
| 444 | 273 (if (and fill-prefix |
| 428 | 274 (not (string-equal fill-prefix ""))) |
| 275 (if (equal fill-prefix | |
| 444 | 276 (buffer-substring |
| 428 | 277 (point) (min (point-max) (+ (length fill-prefix) (point))))) |
| 278 (forward-char (length fill-prefix))) | |
| 279 (if (and adaptive-fill-mode adaptive-fill-regexp | |
| 280 (looking-at adaptive-fill-regexp)) | |
| 281 (goto-char (match-end 0)))) | |
| 282 ;; Skip centering or flushright indentation | |
| 283 (if (memq (current-justification) '(center right)) | |
| 284 (skip-chars-forward " \t"))) | |
| 285 | |
| 286 (defvar indent-region-function nil | |
| 287 "Short cut function to indent region using `indent-according-to-mode'. | |
| 288 A value of nil means really run `indent-according-to-mode' on each line.") | |
| 289 | |
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290 (defun indent-region (start end &optional column) |
| 428 | 291 "Indent each nonblank line in the region. |
| 292 With no argument, indent each line using `indent-according-to-mode', | |
| 293 or use `indent-region-function' to do the whole region if that's non-nil. | |
| 294 If there is a fill prefix, make each line start with the fill prefix. | |
| 295 With argument COLUMN, indent each line to that column. | |
| 296 Called from a program, takes three args: START, END and COLUMN." | |
| 297 (interactive "r\nP") | |
| 298 (if (null column) | |
| 299 (if fill-prefix | |
| 300 (save-excursion | |
| 301 (goto-char end) | |
| 302 (setq end (point-marker)) | |
| 303 (goto-char start) | |
| 304 (let ((regexp (regexp-quote fill-prefix))) | |
| 305 (while (< (point) end) | |
| 306 (or (looking-at regexp) | |
| 307 (and (bolp) (eolp)) | |
| 308 (insert fill-prefix)) | |
| 309 (forward-line 1)))) | |
| 310 (if indent-region-function | |
| 311 (funcall indent-region-function start end) | |
| 312 (save-excursion | |
| 313 (goto-char end) | |
| 314 (setq end (point-marker)) | |
| 315 (goto-char start) | |
| 316 (or (bolp) (forward-line 1)) | |
| 317 (while (< (point) end) | |
| 318 (or (and (bolp) (eolp)) | |
| 319 (funcall indent-line-function)) | |
| 320 (forward-line 1)) | |
| 321 (move-marker end nil)))) | |
| 322 (setq column (prefix-numeric-value column)) | |
| 323 (save-excursion | |
| 324 (goto-char end) | |
| 325 (setq end (point-marker)) | |
| 326 (goto-char start) | |
| 327 (or (bolp) (forward-line 1)) | |
| 328 (while (< (point) end) | |
| 329 (delete-region (point) (progn (skip-chars-forward " \t") (point))) | |
| 330 (or (eolp) | |
| 331 (indent-to column 0)) | |
| 332 (forward-line 1)) | |
| 333 (move-marker end nil)))) | |
| 334 | |
| 814 | 335 (defvar indent-balanced-expression-function nil |
| 336 "Short cut function to indent balanced expression. | |
| 337 A value of nil means really run `indent-according-to-mode' on each line of | |
| 338 balanced expression as computed with `forward-sexp'.") | |
| 339 | |
| 340 (defun indent-balanced-expression () | |
| 341 "Indent each nonblank line in the balanced expression at point. | |
| 342 Use `indent-balanced-expression-function' if that's non-nil, or find | |
| 343 expression with `forward-sexp' and use `indent-region' on result." | |
| 344 (interactive "") | |
| 345 (let ((fun (or indent-balanced-expression-function | |
| 346 (cond ((memq major-mode '(c-mode c++-mode java-mode objc-mode | |
| 347 idl-mode pike-mode | |
| 348 c++-c-mode elec-c-mode)) | |
| 349 'c-indent-exp) | |
| 350 ((memq major-mode | |
| 351 '(lisp-mode | |
| 352 emacs-lisp-mode lisp-interaction-mode | |
| 353 scheme-mode inferior-scheme-mode | |
| 354 scheme-interaction-mode)) | |
| 355 'indent-sexp))))) | |
| 356 (if fun (funcall fun) | |
| 357 (let ((end (save-excursion (forward-sexp) (point)))) | |
| 358 (indent-region (point) end nil))))) | |
| 359 | |
| 360 (defun indent-region-or-balanced-expression () | |
| 361 "Indent region if active, or balanced expression at point. | |
| 362 See `indent-region' and `indent-balanced-expression'." | |
| 363 (interactive "") | |
| 364 (if (region-active-p) | |
| 365 (indent-region (region-beginning) (region-end) nil) | |
| 366 (indent-balanced-expression))) | |
| 367 | |
| 428 | 368 (defun indent-relative-maybe () |
| 369 "Indent a new line like previous nonblank line." | |
| 370 (interactive) | |
| 371 (indent-relative t)) | |
| 372 | |
| 373 (defun indent-relative (&optional unindented-ok) | |
| 374 "Space out to under next indent point in previous nonblank line. | |
| 375 An indent point is a non-whitespace character following whitespace. | |
| 376 If the previous nonblank line has no indent points beyond the | |
| 377 column point starts at, `tab-to-tab-stop' is done instead." | |
| 378 (interactive "P") | |
| 379 (if abbrev-mode (expand-abbrev)) | |
| 380 (let ((start-column (current-column)) | |
| 381 indent) | |
| 382 (save-excursion | |
| 383 (beginning-of-line) | |
| 384 (if (re-search-backward "^[^\n]" nil t) | |
| 385 (let ((end (save-excursion (forward-line 1) (point)))) | |
| 386 (move-to-column start-column) | |
| 387 ;; Is start-column inside a tab on this line? | |
| 388 (if (> (current-column) start-column) | |
| 389 (backward-char 1)) | |
| 390 (or (looking-at "[ \t]") | |
| 391 unindented-ok | |
| 392 (skip-chars-forward "^ \t" end)) | |
| 393 (skip-chars-forward " \t" end) | |
| 394 (or (= (point) end) (setq indent (current-column)))))) | |
| 395 (if indent | |
| 396 (let ((opoint (point-marker))) | |
| 397 (delete-region (point) (progn (skip-chars-backward " \t") (point))) | |
| 398 (indent-to indent 0) | |
| 399 (if (> opoint (point)) | |
| 400 (goto-char opoint)) | |
| 401 (move-marker opoint nil)) | |
| 402 (tab-to-tab-stop)))) | |
| 403 | |
| 404 (defvar tab-stop-list | |
| 405 '(8 16 24 32 40 48 56 64 72 80 88 96 104 112 120) | |
| 406 "*List of tab stop positions used by `tab-to-tab-stops'. | |
| 407 This should be a list of integers, ordered from smallest to largest.") | |
| 408 | |
| 409 (defvar edit-tab-stops-map nil "Keymap used in `edit-tab-stops'.") | |
| 410 (if edit-tab-stops-map | |
| 411 nil | |
| 412 (setq edit-tab-stops-map (make-sparse-keymap)) | |
| 413 (define-key edit-tab-stops-map "\C-x\C-s" 'edit-tab-stops-note-changes) | |
| 414 (define-key edit-tab-stops-map "\C-c\C-c" 'edit-tab-stops-note-changes)) | |
| 415 | |
| 416 (defvar edit-tab-stops-buffer nil | |
| 417 "Buffer whose tab stops are being edited--in case | |
| 418 the variable `tab-stop-list' is local in that buffer.") | |
| 419 | |
| 420 (defun edit-tab-stops () | |
| 421 "Edit the tab stops used by `tab-to-tab-stop'. | |
| 422 Creates a buffer *Tab Stops* containing text describing the tab stops. | |
| 423 A colon indicates a column where there is a tab stop. | |
| 424 You can add or remove colons and then do \\<edit-tab-stops-map>\\[edit-tab-stops-note-changes] to make changes take effect." | |
| 425 (interactive) | |
| 426 (setq edit-tab-stops-buffer (current-buffer)) | |
| 427 (switch-to-buffer (get-buffer-create "*Tab Stops*")) | |
| 428 ;; #### I18N3 should mark buffer as output-translating | |
| 429 (use-local-map edit-tab-stops-map) | |
| 430 (make-local-variable 'indent-tabs-mode) | |
| 431 (setq indent-tabs-mode nil) | |
| 432 (overwrite-mode 1) | |
| 433 (setq truncate-lines t) | |
| 434 (erase-buffer) | |
| 435 (let ((tabs tab-stop-list)) | |
| 436 (while tabs | |
| 437 (indent-to (car tabs) 0) | |
| 438 (insert ?:) | |
| 439 (setq tabs (cdr tabs)))) | |
| 440 (let ((count 0)) | |
| 441 (insert ?\n) | |
| 442 (while (< count 8) | |
| 443 (insert (+ count ?0)) | |
| 444 (insert " ") | |
| 445 (setq count (1+ count))) | |
| 446 (insert ?\n) | |
| 447 (while (> count 0) | |
| 448 (insert "0123456789") | |
| 449 (setq count (1- count)))) | |
| 450 ;; XEmacs | |
| 451 (insert (substitute-command-keys "\nTo install changes, type \\<edit-tab-stops-map>\\[edit-tab-stops-note-changes]")) | |
| 452 (goto-char (point-min))) | |
| 453 | |
| 454 (defun edit-tab-stops-note-changes () | |
| 455 "Put edited tab stops into effect." | |
| 456 (interactive) | |
| 457 (let (tabs) | |
| 458 (save-excursion | |
| 459 (goto-char 1) | |
| 460 (end-of-line) | |
| 461 (while (search-backward ":" nil t) | |
| 462 (setq tabs (cons (current-column) tabs)))) | |
| 463 (bury-buffer (prog1 (current-buffer) | |
| 464 (switch-to-buffer edit-tab-stops-buffer))) | |
| 465 (setq tab-stop-list tabs)) | |
| 466 (message "Tab stops installed")) | |
| 467 | |
| 468 (defun tab-to-tab-stop () | |
| 469 "Insert spaces or tabs to next defined tab-stop column. | |
| 470 The variable `tab-stop-list' is a list of columns at which there are tab stops. | |
| 471 Use \\[edit-tab-stops] to edit them interactively." | |
| 472 (interactive) | |
| 473 (and abbrev-mode (eq (char-syntax (char-before (point))) ?w) | |
| 474 (expand-abbrev)) | |
| 475 (let ((tabs tab-stop-list)) | |
| 476 (while (and tabs (>= (current-column) (car tabs))) | |
| 477 (setq tabs (cdr tabs))) | |
| 478 (if tabs | |
| 479 (let ((opoint (point))) | |
| 480 (skip-chars-backward " \t") | |
| 481 (delete-region (point) opoint) | |
| 482 (indent-to (car tabs))) | |
| 483 (insert ?\ )))) | |
| 484 | |
| 485 (defun move-to-tab-stop () | |
| 486 "Move point to next defined tab-stop column. | |
| 487 The variable `tab-stop-list' is a list of columns at which there are tab stops. | |
| 488 Use \\[edit-tab-stops] to edit them interactively." | |
| 489 (interactive) | |
| 490 (let ((tabs tab-stop-list)) | |
| 491 (while (and tabs (>= (current-column) (car tabs))) | |
| 492 (setq tabs (cdr tabs))) | |
| 493 (if tabs | |
| 494 (let ((before (point))) | |
| 495 (move-to-column (car tabs) t) | |
| 496 (save-excursion | |
| 497 (goto-char before) | |
| 498 ;; If we just added a tab, or moved over one, | |
| 499 ;; delete any superfluous spaces before the old point. | |
| 500 (if (and (eq (char-before (point)) ?\ ) | |
| 501 (eq (char-after (point)) ?\t)) | |
| 502 (let ((tabend (* (/ (current-column) tab-width) tab-width))) | |
| 503 (while (and (> (current-column) tabend) | |
| 504 (eq (char-before (point)) ?\ )) | |
| 446 | 505 (backward-char 1)) |
| 428 | 506 (delete-region (point) before)))))))) |
| 507 | |
| 508 ;(define-key global-map "\t" 'indent-for-tab-command) | |
| 509 ;(define-key esc-map "\034" 'indent-region) | |
| 510 ;(define-key ctl-x-map "\t" 'indent-rigidly) | |
| 511 ;(define-key esc-map "i" 'tab-to-tab-stop) | |
| 512 | |
| 513 ;;; indent.el ends here |