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2076c87c JB |
1 | ;; Basic editing commands for Emacs |
2 | ;; Copyright (C) 1985, 1986, 1987 Free Software Foundation, Inc. | |
3 | ||
4 | ;; This file is part of GNU Emacs. | |
5 | ||
6 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
7 | ;; it under the terms of the GNU General Public License as published by | |
8 | ;; the Free Software Foundation; either version 1, or (at your option) | |
9 | ;; any later version. | |
10 | ||
11 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
12 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | ;; GNU General Public License for more details. | |
15 | ||
16 | ;; You should have received a copy of the GNU General Public License | |
17 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
18 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | ||
20 | ||
21 | (defun open-line (arg) | |
22 | "Insert a newline and leave point before it. If there is a fill | |
23 | prefix, inserts the fill prefix after the newline that it inserts. | |
24 | With arg, inserts that many newlines." | |
25 | (interactive "*p") | |
26 | (let ((flag (and (bolp) (not (bobp))))) | |
27 | (if flag (forward-char -1)) | |
28 | (while (> arg 0) | |
29 | (save-excursion | |
30 | (insert ?\n) | |
31 | (if fill-prefix (insert fill-prefix))) | |
32 | (setq arg (1- arg))) | |
33 | (if flag (forward-char 1)))) | |
34 | ||
35 | (defun split-line () | |
36 | "Split current line, moving portion beyond point vertically down." | |
37 | (interactive "*") | |
38 | (skip-chars-forward " \t") | |
39 | (let ((col (current-column)) | |
40 | (pos (point))) | |
41 | (insert ?\n) | |
42 | (indent-to col 0) | |
43 | (goto-char pos))) | |
44 | ||
45 | (defun quoted-insert (arg) | |
46 | "Read next input character and insert it. | |
47 | Useful for inserting control characters. | |
48 | You may also type up to 3 octal digits, to insert a character with that code" | |
49 | (interactive "*p") | |
50 | (let ((char (read-quoted-char))) | |
51 | (while (> arg 0) | |
52 | (insert char) | |
53 | (setq arg (1- arg))))) | |
54 | ||
55 | (defun delete-indentation (&optional arg) | |
56 | "Join this line to previous and fix up whitespace at join. | |
57 | With argument, join this line to following line." | |
58 | (interactive "*P") | |
59 | (beginning-of-line) | |
60 | (if arg (forward-line 1)) | |
61 | (if (eq (preceding-char) ?\n) | |
62 | (progn | |
63 | (delete-region (point) (1- (point))) | |
64 | (fixup-whitespace)))) | |
65 | ||
66 | (defun fixup-whitespace () | |
67 | "Fixup white space between objects around point. | |
68 | Leave one space or none, according to the context." | |
69 | (interactive "*") | |
70 | (save-excursion | |
71 | (delete-horizontal-space) | |
72 | (if (or (looking-at "^\\|\\s)") | |
73 | (save-excursion (forward-char -1) | |
74 | (looking-at "$\\|\\s(\\|\\s'"))) | |
75 | nil | |
76 | (insert ?\ )))) | |
77 | ||
78 | (defun delete-horizontal-space () | |
79 | "Delete all spaces and tabs around point." | |
80 | (interactive "*") | |
81 | (skip-chars-backward " \t") | |
82 | (delete-region (point) (progn (skip-chars-forward " \t") (point)))) | |
83 | ||
84 | (defun just-one-space () | |
85 | "Delete all spaces and tabs around point, leaving one space." | |
86 | (interactive "*") | |
87 | (skip-chars-backward " \t") | |
88 | (if (= (following-char) ? ) | |
89 | (forward-char 1) | |
90 | (insert ? )) | |
91 | (delete-region (point) (progn (skip-chars-forward " \t") (point)))) | |
92 | ||
93 | (defun delete-blank-lines () | |
94 | "On blank line, delete all surrounding blank lines, leaving just one. | |
95 | On isolated blank line, delete that one. | |
96 | On nonblank line, delete all blank lines that follow it." | |
97 | (interactive "*") | |
98 | (let (thisblank singleblank) | |
99 | (save-excursion | |
100 | (beginning-of-line) | |
101 | (setq thisblank (looking-at "[ \t]*$")) | |
102 | (setq singleblank | |
103 | (and thisblank | |
104 | (not (looking-at "[ \t]*\n[ \t]*$")) | |
105 | (or (bobp) | |
106 | (progn (forward-line -1) | |
107 | (not (looking-at "[ \t]*$"))))))) | |
108 | (if thisblank | |
109 | (progn | |
110 | (beginning-of-line) | |
111 | (if singleblank (forward-line 1)) | |
112 | (delete-region (point) | |
113 | (if (re-search-backward "[^ \t\n]" nil t) | |
114 | (progn (forward-line 1) (point)) | |
115 | (point-min))))) | |
116 | (if (not (and thisblank singleblank)) | |
117 | (save-excursion | |
118 | (end-of-line) | |
119 | (forward-line 1) | |
120 | (delete-region (point) | |
121 | (if (re-search-forward "[^ \t\n]" nil t) | |
122 | (progn (beginning-of-line) (point)) | |
123 | (point-max))))))) | |
124 | ||
125 | (defun back-to-indentation () | |
126 | "Move point to the first non-whitespace character on this line." | |
127 | (interactive) | |
128 | (beginning-of-line 1) | |
129 | (skip-chars-forward " \t")) | |
130 | ||
131 | (defun newline-and-indent () | |
132 | "Insert a newline, then indent according to major mode. | |
133 | Indentation is done using the current indent-line-function. | |
134 | In programming language modes, this is the same as TAB. | |
135 | In some text modes, where TAB inserts a tab, this indents to the | |
136 | specified left-margin column." | |
137 | (interactive "*") | |
138 | (delete-region (point) (progn (skip-chars-backward " \t") (point))) | |
139 | (insert ?\n) | |
140 | (indent-according-to-mode)) | |
141 | ||
142 | (defun reindent-then-newline-and-indent () | |
143 | "Reindent current line, insert newline, then indent the new line. | |
144 | Indentation of both lines is done according to the current major mode, | |
145 | which means that the current value of indent-line-function is called. | |
146 | In programming language modes, this is the same as TAB. | |
147 | In some text modes, where TAB inserts a tab, this indents to the | |
148 | specified left-margin column." | |
149 | (interactive "*") | |
150 | (save-excursion | |
151 | (delete-region (point) (progn (skip-chars-backward " \t") (point))) | |
152 | (indent-according-to-mode)) | |
153 | (insert ?\n) | |
154 | (indent-according-to-mode)) | |
155 | ||
156 | ;; Internal subroutine of delete-char | |
157 | (defun kill-forward-chars (arg) | |
158 | (if (listp arg) (setq arg (car arg))) | |
159 | (if (eq arg '-) (setq arg -1)) | |
160 | (kill-region (point) (+ (point) arg))) | |
161 | ||
162 | ;; Internal subroutine of backward-delete-char | |
163 | (defun kill-backward-chars (arg) | |
164 | (if (listp arg) (setq arg (car arg))) | |
165 | (if (eq arg '-) (setq arg -1)) | |
166 | (kill-region (point) (- (point) arg))) | |
167 | ||
168 | (defun backward-delete-char-untabify (arg &optional killp) | |
169 | "Delete characters backward, changing tabs into spaces. | |
170 | Delete ARG chars, and kill (save in kill ring) if KILLP is non-nil. | |
171 | Interactively, ARG is the prefix arg (default 1) | |
172 | and KILLP is t if prefix arg is was specified." | |
173 | (interactive "*p\nP") | |
174 | (let ((count arg)) | |
175 | (save-excursion | |
176 | (while (and (> count 0) (not (bobp))) | |
177 | (if (= (preceding-char) ?\t) | |
178 | (let ((col (current-column))) | |
179 | (forward-char -1) | |
180 | (setq col (- col (current-column))) | |
181 | (insert-char ?\ col) | |
182 | (delete-char 1))) | |
183 | (forward-char -1) | |
184 | (setq count (1- count))))) | |
185 | (delete-backward-char arg killp) | |
186 | ;; In overwrite mode, back over columns while clearing them out, | |
187 | ;; unless at end of line. | |
188 | (and overwrite-mode (not (eolp)) | |
189 | (save-excursion (insert-char ?\ arg)))) | |
190 | ||
191 | (defun zap-to-char (arg char) | |
192 | "Kill up to and including ARG'th occurrence of CHAR. | |
193 | Goes backward if ARG is negative; error if CHAR not found." | |
194 | (interactive "p\ncZap to char: ") | |
195 | (kill-region (point) (progn | |
196 | (search-forward (char-to-string char) nil nil arg) | |
197 | ; (goto-char (if (> arg 0) (1- (point)) (1+ (point)))) | |
198 | (point)))) | |
199 | ||
200 | (defun beginning-of-buffer (&optional arg) | |
201 | "Move point to the beginning of the buffer; leave mark at previous position. | |
202 | With arg N, put point N/10 of the way from the true beginning. | |
203 | Don't use this in Lisp programs! | |
204 | \(goto-char (point-min)) is faster and avoids clobbering the mark." | |
205 | (interactive "P") | |
206 | (push-mark) | |
207 | (goto-char (if arg | |
208 | (if (> (buffer-size) 10000) | |
209 | ;; Avoid overflow for large buffer sizes! | |
210 | (* (prefix-numeric-value arg) | |
211 | (/ (buffer-size) 10)) | |
212 | (/ (+ 10 (* (buffer-size) (prefix-numeric-value arg))) 10)) | |
213 | (point-min))) | |
214 | (if arg (forward-line 1))) | |
215 | ||
216 | (defun end-of-buffer (&optional arg) | |
217 | "Move point to the end of the buffer; leave mark at previous position. | |
218 | With arg N, put point N/10 of the way from the true end. | |
219 | Don't use this in Lisp programs! | |
220 | \(goto-char (point-max)) is faster and avoids clobbering the mark." | |
221 | (interactive "P") | |
222 | (push-mark) | |
223 | (goto-char (if arg | |
224 | (- (1+ (buffer-size)) | |
225 | (if (> (buffer-size) 10000) | |
226 | ;; Avoid overflow for large buffer sizes! | |
227 | (* (prefix-numeric-value arg) | |
228 | (/ (buffer-size) 10)) | |
229 | (/ (* (buffer-size) (prefix-numeric-value arg)) 10))) | |
230 | (point-max))) | |
231 | (if arg (forward-line 1) | |
232 | ;; Scroll to put point near bottom--show nearly maximum amount of text, | |
233 | ;; but leave room to add something. | |
234 | (recenter -3))) | |
235 | ||
236 | (defun mark-whole-buffer () | |
237 | "Put point at beginning and mark at end of buffer." | |
238 | (interactive) | |
239 | (push-mark (point)) | |
240 | (push-mark (point-max)) | |
241 | (goto-char (point-min))) | |
242 | ||
243 | (defun count-lines-region (start end) | |
244 | "Print number of lines and charcters in the region." | |
245 | (interactive "r") | |
246 | (message "Region has %d lines, %d characters" | |
247 | (count-lines start end) (- end start))) | |
248 | ||
249 | (defun what-line () | |
250 | "Print the current line number (in the buffer) of point." | |
251 | (interactive) | |
252 | (save-restriction | |
253 | (widen) | |
254 | (save-excursion | |
255 | (beginning-of-line) | |
256 | (message "Line %d" | |
257 | (1+ (count-lines 1 (point))))))) | |
258 | ||
259 | (defun count-lines (start end) | |
260 | "Return number of lines between START and END. | |
261 | This is usually the number of newlines between them, | |
262 | but will be one more if START is not equal to END | |
263 | and the greater of them is not at the start of a line." | |
264 | (save-excursion | |
265 | (save-restriction | |
266 | (narrow-to-region start end) | |
267 | (goto-char (point-min)) | |
268 | (if (eq selective-display t) | |
269 | (let ((done 0)) | |
270 | (while (re-search-forward "[\n\C-m]" nil t 40) | |
271 | (setq done (+ 40 done))) | |
272 | (while (re-search-forward "[\n\C-m]" nil t 1) | |
273 | (setq done (+ 1 done))) | |
274 | done) | |
275 | (- (buffer-size) (forward-line (buffer-size))))))) | |
276 | ||
277 | (defun what-cursor-position () | |
278 | "Print info on cursor position (on screen and within buffer)." | |
279 | (interactive) | |
280 | (let* ((char (following-char)) | |
281 | (beg (point-min)) | |
282 | (end (point-max)) | |
283 | (pos (point)) | |
284 | (total (buffer-size)) | |
285 | (percent (if (> total 50000) | |
286 | ;; Avoid overflow from multiplying by 100! | |
287 | (/ (+ (/ total 200) (1- pos)) (max (/ total 100) 1)) | |
288 | (/ (+ (/ total 2) (* 100 (1- pos))) (max total 1)))) | |
289 | (hscroll (if (= (window-hscroll) 0) | |
290 | "" | |
291 | (format " Hscroll=%d" (window-hscroll)))) | |
292 | (col (current-column))) | |
293 | (if (= pos end) | |
294 | (if (or (/= beg 1) (/= end (1+ total))) | |
295 | (message "point=%d of %d(%d%%) <%d - %d> column %d %s" | |
296 | pos total percent beg end col hscroll) | |
297 | (message "point=%d of %d(%d%%) column %d %s" | |
298 | pos total percent col hscroll)) | |
299 | (if (or (/= beg 1) (/= end (1+ total))) | |
300 | (message "Char: %s (0%o) point=%d of %d(%d%%) <%d - %d> column %d %s" | |
301 | (single-key-description char) char pos total percent beg end col hscroll) | |
302 | (message "Char: %s (0%o) point=%d of %d(%d%%) column %d %s" | |
303 | (single-key-description char) char pos total percent col hscroll))))) | |
304 | ||
305 | (defun fundamental-mode () | |
306 | "Major mode not specialized for anything in particular. | |
307 | Other major modes are defined by comparison with this one." | |
308 | (interactive) | |
309 | (kill-all-local-variables)) | |
310 | ||
311 | (put 'eval-expression 'disabled t) | |
312 | ||
313 | ;; We define this, rather than making eval interactive, | |
314 | ;; for the sake of completion of names like eval-region, eval-current-buffer. | |
315 | (defun eval-expression (expression) | |
316 | "Evaluate EXPRESSION and print value in minibuffer. | |
317 | Value is also consed on to front of variable values 's value." | |
318 | (interactive "xEval: ") | |
319 | (setq values (cons (eval expression) values)) | |
320 | (prin1 (car values) t)) | |
321 | ||
322 | (defun edit-and-eval-command (prompt command) | |
323 | "Prompting with PROMPT, let user edit COMMAND and eval result. | |
324 | COMMAND is a Lisp expression. Let user edit that expression in | |
325 | the minibuffer, then read and evaluate the result." | |
326 | (let ((command (read-minibuffer prompt | |
327 | (prin1-to-string command)))) | |
328 | ;; Add edited command to command history, unless redundant. | |
329 | (or (equal command (car command-history)) | |
330 | (setq command-history (cons command command-history))) | |
331 | (eval command))) | |
332 | ||
333 | ;; (defvar repeat-complex-command nil) | |
334 | ||
335 | (defvar repeat-complex-command-map (copy-keymap minibuffer-local-map)) | |
336 | (define-key repeat-complex-command-map "\ep" 'previous-complex-command) | |
337 | (define-key repeat-complex-command-map "\en" 'next-complex-command) | |
338 | (defun repeat-complex-command (repeat-complex-command-arg) | |
339 | "Edit and re-evaluate last complex command, or ARGth from last. | |
340 | A complex command is one which used the minibuffer. | |
341 | The command is placed in the minibuffer as a Lisp form for editing. | |
342 | The result is executed, repeating the command as changed. | |
343 | If the command has been changed or is not the most recent previous command | |
344 | it is added to the front of the command history. | |
345 | Whilst editing the command, the following commands are available: | |
346 | \\{repeat-complex-command-map}" | |
347 | (interactive "p") | |
348 | (let ((elt (nth (1- repeat-complex-command-arg) command-history)) | |
349 | (repeat-complex-command-flag t) | |
350 | newcmd) | |
351 | (if elt | |
352 | (progn | |
353 | (setq newcmd (read-from-minibuffer "Redo: " | |
354 | (prin1-to-string elt) | |
355 | repeat-complex-command-map | |
356 | t)) | |
357 | ;; If command to be redone does not match front of history, | |
358 | ;; add it to the history. | |
359 | (or (equal newcmd (car command-history)) | |
360 | (setq command-history (cons newcmd command-history))) | |
361 | (eval newcmd)) | |
362 | (ding)))) | |
363 | ||
364 | (defun next-complex-command (n) | |
365 | "Inserts the next element of `command-history' into the minibuffer." | |
366 | (interactive "p") | |
367 | (let ((narg (min (max 1 (- repeat-complex-command-arg n)) | |
368 | (length command-history)))) | |
369 | (if (= repeat-complex-command-arg narg) | |
370 | (error (if (= repeat-complex-command-arg 1) | |
371 | "No following item in command history" | |
372 | "No preceding item in command history")) | |
373 | (erase-buffer) | |
374 | (setq repeat-complex-command-arg narg) | |
375 | (insert (prin1-to-string (nth (1- repeat-complex-command-arg) | |
376 | command-history))) | |
377 | (goto-char (point-min))))) | |
378 | ||
379 | (defun previous-complex-command (n) | |
380 | "Inserts the previous element of `command-history' into the minibuffer." | |
381 | (interactive "p") | |
382 | (if repeat-complex-command-flag | |
383 | (next-complex-command (- n)) | |
384 | (repeat-complex-command 1))) | |
385 | ||
386 | (defun goto-line (arg) | |
387 | "Goto line ARG, counting from line 1 at beginning of buffer." | |
388 | (interactive "NGoto line: ") | |
389 | (save-restriction | |
390 | (widen) | |
391 | (goto-char 1) | |
392 | (if (eq selective-display t) | |
393 | (re-search-forward "[\n\C-m]" nil 'end (1- arg)) | |
394 | (forward-line (1- arg))))) | |
395 | ||
396 | ;Put this on C-x u, so we can force that rather than C-_ into startup msg | |
397 | (fset 'advertised-undo 'undo) | |
398 | ||
399 | (defun undo (&optional arg) | |
400 | "Undo some previous changes. | |
401 | Repeat this command to undo more changes. | |
402 | A numeric argument serves as a repeat count." | |
403 | (interactive "*p") | |
404 | (let ((modified (buffer-modified-p))) | |
405 | (message "Undo!") | |
406 | (or (eq last-command 'undo) | |
407 | (progn (undo-start) | |
408 | (undo-more 1))) | |
409 | (setq this-command 'undo) | |
410 | (undo-more (or arg 1)) | |
411 | (and modified (not (buffer-modified-p)) | |
412 | (delete-auto-save-file-if-necessary)))) | |
413 | ||
414 | (defun undo-start () | |
415 | "Move pending-undo-list to front of undo records. | |
416 | The next call to undo-more will undo the most recently made change." | |
417 | (if (eq buffer-undo-list t) | |
418 | (error "No undo information in this buffer")) | |
419 | (setq pending-undo-list buffer-undo-list)) | |
420 | ||
421 | (defun undo-more (count) | |
422 | "Undo back N undo-boundaries beyond what was already undone recently. | |
423 | Call undo-start to get ready to undo recent changes, | |
424 | then call undo-more one or more times to undo them." | |
425 | (or pending-undo-list | |
426 | (error "No further undo information")) | |
427 | (setq pending-undo-list (primitive-undo count pending-undo-list))) | |
428 | ||
429 | (defvar last-shell-command "") | |
430 | (defvar last-shell-command-on-region "") | |
431 | ||
432 | (defun shell-command (command &optional flag) | |
433 | "Execute string COMMAND in inferior shell; display output, if any. | |
434 | If COMMAND ends in ampersand, execute it asynchronously. | |
435 | ||
436 | Optional second arg non-nil (prefix arg, if interactive) | |
437 | means insert output in current buffer after point (leave mark after it). | |
438 | This cannot be done asynchronously." | |
439 | (interactive (list (read-string "Shell command: " last-shell-command) | |
440 | current-prefix-arg)) | |
441 | (if flag | |
442 | (progn (barf-if-buffer-read-only) | |
443 | (push-mark) | |
444 | ;; We do not use -f for csh; we will not support broken use of | |
445 | ;; .cshrcs. Even the BSD csh manual says to use | |
446 | ;; "if ($?prompt) exit" before things which are not useful | |
447 | ;; non-interactively. Besides, if someone wants their other | |
448 | ;; aliases for shell commands then they can still have them. | |
449 | (call-process shell-file-name nil t nil | |
450 | "-c" command) | |
451 | (exchange-point-and-mark)) | |
452 | ;; Preserve the match data in case called from a program. | |
453 | (let ((data (match-data))) | |
454 | (unwind-protect | |
455 | (if (string-match "[ \t]*&[ \t]*$" command) | |
456 | ;; Command ending with ampersand means asynchronous. | |
457 | (let ((buffer (get-buffer-create "*shell-command*")) | |
458 | (directory default-directory) | |
459 | proc) | |
460 | ;; Remove the ampersand. | |
461 | (setq command (substring command 0 (match-beginning 0))) | |
462 | ;; If will kill a process, query first. | |
463 | (setq proc (get-buffer-process buffer)) | |
464 | (if proc | |
465 | (if (yes-or-no-p "A command is running. Kill it? ") | |
466 | (kill-process proc) | |
467 | (error "Shell command in progress"))) | |
468 | (save-excursion | |
469 | (set-buffer buffer) | |
470 | (erase-buffer) | |
471 | (display-buffer buffer) | |
472 | (setq default-directory directory) | |
473 | (setq proc (start-process "Shell" buffer | |
474 | shell-file-name "-c" command)) | |
475 | (setq mode-line-process '(": %s")) | |
476 | (set-process-sentinel proc 'shell-command-sentinel) | |
477 | (set-process-filter proc 'shell-command-filter) | |
478 | )) | |
479 | (shell-command-on-region (point) (point) command nil)) | |
480 | (store-match-data data))))) | |
481 | ||
482 | ;; We have a sentinel to prevent insertion of a termination message | |
483 | ;; in the buffer itself. | |
484 | (defun shell-command-sentinel (process signal) | |
485 | (if (memq (process-status process) '(exit signal)) | |
486 | (progn | |
487 | (message "%s: %s." | |
488 | (car (cdr (cdr (process-command process)))) | |
489 | (substring signal 0 -1)) | |
490 | (save-excursion | |
491 | (set-buffer (process-buffer process)) | |
492 | (setq mode-line-process nil)) | |
493 | (delete-process process)))) | |
494 | ||
495 | (defun shell-command-filter (proc string) | |
496 | ;; Do save-excursion by hand so that we can leave point numerically unchanged | |
497 | ;; despite an insertion immediately after it. | |
498 | (let* ((obuf (current-buffer)) | |
499 | (buffer (process-buffer proc)) | |
500 | opoint | |
501 | (window (get-buffer-window buffer)) | |
502 | (pos (window-start window))) | |
503 | (unwind-protect | |
504 | (progn | |
505 | (set-buffer buffer) | |
506 | (setq opoint (point)) | |
507 | (goto-char (point-max)) | |
508 | (insert-before-markers string)) | |
509 | ;; insert-before-markers moved this marker: set it back. | |
510 | (set-window-start window pos) | |
511 | ;; Finish our save-excursion. | |
512 | (goto-char opoint) | |
513 | (set-buffer obuf)))) | |
514 | ||
515 | (defun shell-command-on-region (start end command &optional flag interactive) | |
516 | "Execute string COMMAND in inferior shell with region as input. | |
517 | Normally display output (if any) in temp buffer `*Shell Command Output*'; | |
518 | Prefix arg means replace the region with it. | |
519 | Noninteractive args are START, END, COMMAND, FLAG. | |
520 | Noninteractively FLAG means insert output in place of text from START to END, | |
521 | and put point at the end, but don't alter the mark. | |
522 | ||
523 | If the output is one line, it is displayed in the echo area, | |
524 | but it is nonetheless available in buffer `*Shell Command Output*' | |
525 | even though that buffer is not automatically displayed. If there is no output | |
526 | or output is inserted in the current buffer then `*Shell Command Output*' is | |
527 | deleted." | |
528 | (interactive (list (min (point) (mark)) (max (point) (mark)) | |
529 | (read-string "Shell command on region: " | |
530 | last-shell-command-on-region) | |
531 | current-prefix-arg | |
532 | (prefix-numeric-value current-prefix-arg))) | |
533 | (if flag | |
534 | ;; Replace specified region with output from command. | |
535 | (let ((swap (and interactive (< (point) (mark))))) | |
536 | ;; Don't muck with mark | |
537 | ;; unless called interactively. | |
538 | (and interactive (push-mark)) | |
539 | (call-process-region start end shell-file-name t t nil | |
540 | "-c" command) | |
541 | (if (get-buffer "*Shell Command Output*") | |
542 | (kill-buffer "*Shell Command Output*")) | |
543 | (and interactive swap (exchange-point-and-mark))) | |
544 | ;; No prefix argument: put the output in a temp buffer, | |
545 | ;; replacing its entire contents. | |
546 | (let ((buffer (get-buffer-create "*Shell Command Output*"))) | |
547 | (if (eq buffer (current-buffer)) | |
548 | ;; If the input is the same buffer as the output, | |
549 | ;; delete everything but the specified region, | |
550 | ;; then replace that region with the output. | |
551 | (progn (delete-region end (point-max)) | |
552 | (delete-region (point-min) start) | |
553 | (call-process-region (point-min) (point-max) | |
554 | shell-file-name t t nil | |
555 | "-c" command)) | |
556 | ;; Clear the output buffer, then run the command with output there. | |
557 | (save-excursion | |
558 | (set-buffer buffer) | |
559 | (erase-buffer)) | |
560 | (call-process-region start end shell-file-name | |
561 | nil buffer nil | |
562 | "-c" command)) | |
563 | ;; Report the amount of output. | |
564 | (let ((lines (save-excursion | |
565 | (set-buffer buffer) | |
566 | (if (= (buffer-size) 0) | |
567 | 0 | |
568 | (count-lines (point-min) (point-max)))))) | |
569 | (cond ((= lines 0) | |
570 | (message "(Shell command completed with no output)") | |
571 | (kill-buffer "*Shell Command Output*")) | |
572 | ((= lines 1) | |
573 | (message "%s" | |
574 | (save-excursion | |
575 | (set-buffer buffer) | |
576 | (goto-char (point-min)) | |
577 | (buffer-substring (point) | |
578 | (progn (end-of-line) (point)))))) | |
579 | (t | |
580 | (set-window-start (display-buffer buffer) 1))))))) | |
581 | \f | |
582 | (defun universal-argument () | |
583 | "Begin a numeric argument for the following command. | |
584 | Digits or minus sign following \\[universal-argument] make up the numeric argument. | |
585 | \\[universal-argument] following the digits or minus sign ends the argument. | |
586 | \\[universal-argument] without digits or minus sign provides 4 as argument. | |
587 | Repeating \\[universal-argument] without digits or minus sign | |
588 | multiplies the argument by 4 each time." | |
589 | (interactive nil) | |
c637ae6f JB |
590 | (let ((factor 4) |
591 | key) | |
592 | (describe-arg (list factor) 1) | |
593 | (setq key (read-key-sequence nil)) | |
594 | (while (equal (key-binding key) 'universal-argument) | |
595 | (setq factor (* 4 factor)) | |
596 | (describe-arg (list factor) 1) | |
597 | (setq key (read-key-sequence nil))) | |
598 | (prefix-arg-internal key factor nil))) | |
599 | ||
600 | (defun prefix-arg-internal (key factor value) | |
2076c87c JB |
601 | (let ((sign 1)) |
602 | (if (and (numberp value) (< value 0)) | |
603 | (setq sign -1 value (- value))) | |
604 | (if (eq value '-) | |
605 | (setq sign -1 value nil)) | |
c637ae6f JB |
606 | (describe-arg value sign) |
607 | (while (equal key "-") | |
608 | (setq sign (- sign) factor nil) | |
609 | (describe-arg value sign) | |
610 | (setq key (read-key-sequence nil))) | |
611 | (while (and (= (length key) 1) | |
612 | (not (string< key "0")) | |
613 | (not (string< "9" key))) | |
614 | (setq value (+ (* (if (numberp value) value 0) 10) | |
615 | (- (aref key 0) ?0)) | |
616 | factor nil) | |
617 | (describe-arg value sign) | |
618 | (setq key (read-key-sequence nil))) | |
2076c87c | 619 | (setq prefix-arg |
c637ae6f | 620 | (cond (factor (list factor)) |
2076c87c JB |
621 | ((numberp value) (* value sign)) |
622 | ((= sign -1) '-))) | |
c637ae6f JB |
623 | ;; Calling universal-argument after digits |
624 | ;; terminates the argument but is ignored. | |
625 | (if (eq (key-binding key) 'universal-argument) | |
626 | (progn | |
627 | (describe-arg value sign) | |
628 | (setq key (read-key-sequence nil)))) | |
629 | (if (= (length key) 1) | |
630 | ;; Make sure self-insert-command finds the proper character; | |
631 | ;; unread the character and let the command loop process it. | |
632 | (setq unread-command-char (string-to-char key)) | |
633 | ;; We can't push back a longer string, so we'll emulate the | |
634 | ;; command loop ourselves. | |
635 | (command-execute (key-binding key))))) | |
636 | ||
637 | (defun describe-arg (value sign) | |
638 | (cond ((numberp value) | |
639 | (message "Arg: %d" (* value sign))) | |
640 | ((consp value) | |
641 | (message "Arg: [%d]" (car value))) | |
642 | ((< sign 0) | |
643 | (message "Arg: -")))) | |
2076c87c JB |
644 | |
645 | (defun digit-argument (arg) | |
646 | "Part of the numeric argument for the next command. | |
647 | \\[universal-argument] following digits or minus sign ends the argument." | |
648 | (interactive "P") | |
c637ae6f JB |
649 | (prefix-arg-internal (char-to-string (logand last-command-char ?\177)) |
650 | nil arg)) | |
2076c87c JB |
651 | |
652 | (defun negative-argument (arg) | |
653 | "Begin a negative numeric argument for the next command. | |
654 | \\[universal-argument] following digits or minus sign ends the argument." | |
655 | (interactive "P") | |
c637ae6f | 656 | (prefix-arg-internal "-" nil arg)) |
2076c87c JB |
657 | \f |
658 | (defun forward-to-indentation (arg) | |
659 | "Move forward ARG lines and position at first nonblank character." | |
660 | (interactive "p") | |
661 | (forward-line arg) | |
662 | (skip-chars-forward " \t")) | |
663 | ||
664 | (defun backward-to-indentation (arg) | |
665 | "Move backward ARG lines and position at first nonblank character." | |
666 | (interactive "p") | |
667 | (forward-line (- arg)) | |
668 | (skip-chars-forward " \t")) | |
669 | ||
670 | (defun kill-line (&optional arg) | |
671 | "Kill the rest of the current line; if no nonblanks there, kill thru newline. | |
672 | With prefix argument, kill that many lines from point. | |
673 | Negative arguments kill lines backward. | |
674 | ||
675 | When calling from a program, nil means \"no arg\", | |
676 | a number counts as a prefix arg." | |
677 | (interactive "P") | |
678 | (kill-region (point) | |
679 | (progn | |
680 | (if arg | |
681 | (forward-line (prefix-numeric-value arg)) | |
682 | (if (eobp) | |
683 | (signal 'end-of-buffer nil)) | |
684 | (if (looking-at "[ \t]*$") | |
685 | (forward-line 1) | |
686 | (end-of-line))) | |
687 | (point)))) | |
688 | \f | |
689 | ;;;; The kill ring | |
690 | ||
691 | (defvar kill-ring nil | |
692 | "List of killed text sequences.") | |
693 | ||
694 | (defconst kill-ring-max 30 | |
695 | "*Maximum length of kill ring before oldest elements are thrown away.") | |
696 | ||
697 | (defvar kill-ring-yank-pointer nil | |
698 | "The tail of the kill ring whose car is the last thing yanked.") | |
699 | ||
700 | (defun kill-append (string before-p) | |
701 | (setcar kill-ring | |
702 | (if before-p | |
703 | (concat string (car kill-ring)) | |
704 | (concat (car kill-ring) string)))) | |
705 | ||
706 | (defun kill-region (beg end) | |
707 | "Kill between point and mark. | |
708 | The text is deleted but saved in the kill ring. | |
709 | The command \\[yank] can retrieve it from there. | |
710 | \(If you want to kill and then yank immediately, use \\[copy-region-as-kill].) | |
711 | ||
712 | This is the primitive for programs to kill text (as opposed to deleting it). | |
713 | Supply two arguments, character numbers indicating the stretch of text | |
714 | to be killed. | |
715 | Any command that calls this function is a \"kill command\". | |
716 | If the previous command was also a kill command, | |
717 | the text killed this time appends to the text killed last time | |
718 | to make one entry in the kill ring." | |
719 | (interactive "r") | |
720 | (if (and (not (eq buffer-undo-list t)) | |
721 | (not (eq last-command 'kill-region)) | |
722 | (not (eq beg end)) | |
723 | (not buffer-read-only)) | |
724 | ;; Don't let the undo list be truncated before we can even access it. | |
725 | (let ((undo-high-threshold (+ (- (max beg end) (min beg end)) 100))) | |
726 | (delete-region beg end) | |
727 | ;; Take the same string recorded for undo | |
728 | ;; and put it in the kill-ring. | |
729 | (setq kill-ring (cons (car (car buffer-undo-list)) kill-ring)) | |
730 | (if (> (length kill-ring) kill-ring-max) | |
731 | (setcdr (nthcdr (1- kill-ring-max) kill-ring) nil)) | |
732 | (setq this-command 'kill-region) | |
733 | (setq kill-ring-yank-pointer kill-ring)) | |
734 | (copy-region-as-kill beg end) | |
735 | (or buffer-read-only (delete-region beg end)))) | |
736 | ||
c637ae6f JB |
737 | (defvar interprogram-cut-function nil |
738 | "Function to call to make a killed region available to other programs. | |
739 | ||
740 | Most window systems provide some sort of facility for cutting and | |
741 | pasting text between the windows of different programs. On startup, | |
742 | this variable is set to a function which emacs will call to make the | |
743 | most recently killed text available to other programs. | |
744 | ||
745 | The function takes one argument, TEXT, which is a string containing | |
746 | the text which should be made available.") | |
2076c87c JB |
747 | |
748 | (defun copy-region-as-kill (beg end) | |
749 | "Save the region as if killed, but don't kill it. | |
750 | If `x-select-kill' is non-nil, also save the text for X cut and paste." | |
751 | (interactive "r") | |
752 | (if (eq last-command 'kill-region) | |
753 | (kill-append (buffer-substring beg end) (< end beg)) | |
754 | (setq kill-ring (cons (buffer-substring beg end) kill-ring)) | |
755 | (if (> (length kill-ring) kill-ring-max) | |
756 | (setcdr (nthcdr (1- kill-ring-max) kill-ring) nil))) | |
c637ae6f JB |
757 | (if interprogram-cut-function |
758 | (funcall interprogram-cut-function (car kill-ring))) | |
2076c87c JB |
759 | (setq this-command 'kill-region |
760 | kill-ring-yank-pointer kill-ring) | |
761 | nil) | |
762 | ||
763 | (defun kill-ring-save (beg end) | |
764 | "Save the region as if killed, but don't kill it." | |
765 | (interactive "r") | |
766 | (copy-region-as-kill beg end) | |
767 | (message "%d characters copied to kill ring" | |
768 | (- (max beg end) (min beg end)))) | |
769 | ||
770 | (defun append-next-kill () | |
771 | "Cause following command, if kill, to append to previous kill." | |
772 | (interactive) | |
773 | (if (interactive-p) | |
774 | (progn | |
775 | (setq this-command 'kill-region) | |
776 | (message "If the next command is a kill, it will append")) | |
777 | (setq last-command 'kill-region))) | |
778 | ||
779 | (defun rotate-yank-pointer (arg) | |
780 | "Rotate the yanking point in the kill ring." | |
781 | (interactive "p") | |
782 | (let ((length (length kill-ring))) | |
783 | (if (zerop length) | |
784 | (error "Kill ring is empty") | |
785 | (setq kill-ring-yank-pointer | |
786 | (nthcdr (% (+ arg (- length (length kill-ring-yank-pointer))) | |
787 | length) | |
788 | kill-ring))))) | |
789 | ||
790 | (defun yank-pop (arg) | |
791 | "Replace just-yanked stretch of killed-text with a different stretch. | |
792 | This command is allowed only immediately after a yank or a yank-pop. | |
793 | At such a time, the region contains a stretch of reinserted | |
794 | previously-killed text. yank-pop deletes that text and inserts in its | |
795 | place a different stretch of killed text. | |
796 | ||
797 | With no argument, the previous kill is inserted. | |
798 | With argument n, the n'th previous kill is inserted. | |
799 | If n is negative, this is a more recent kill. | |
800 | ||
801 | The sequence of kills wraps around, so that after the oldest one | |
802 | comes the newest one." | |
803 | (interactive "*p") | |
804 | (if (not (eq last-command 'yank)) | |
805 | (error "Previous command was not a yank")) | |
806 | (setq this-command 'yank) | |
807 | (let ((before (< (point) (mark)))) | |
808 | (delete-region (point) (mark)) | |
809 | (rotate-yank-pointer arg) | |
810 | (set-mark (point)) | |
811 | (insert (car kill-ring-yank-pointer)) | |
812 | (if before (exchange-point-and-mark)))) | |
813 | ||
814 | (defun yank (&optional arg) | |
815 | "Reinsert the last stretch of killed text. | |
816 | More precisely, reinsert the stretch of killed text most recently | |
817 | killed OR yanked. | |
818 | With just C-U as argument, same but put point in front (and mark at end). | |
819 | With argument n, reinsert the nth most recently killed stretch of killed | |
820 | text. | |
821 | See also the command \\[yank-pop]." | |
822 | (interactive "*P") | |
823 | (rotate-yank-pointer (if (listp arg) 0 | |
824 | (if (eq arg '-) -1 | |
825 | (1- arg)))) | |
826 | (push-mark (point)) | |
827 | (insert (car kill-ring-yank-pointer)) | |
828 | (if (consp arg) | |
829 | (exchange-point-and-mark))) | |
830 | \f | |
831 | (defun insert-buffer (buffer) | |
832 | "Insert after point the contents of BUFFER. | |
833 | Puts mark after the inserted text. | |
834 | BUFFER may be a buffer or a buffer name." | |
835 | (interactive (list (read-buffer "Insert buffer: " (other-buffer) t))) | |
836 | (or (bufferp buffer) | |
837 | (setq buffer (get-buffer buffer))) | |
838 | (let (start end newmark) | |
839 | (save-excursion | |
840 | (save-excursion | |
841 | (set-buffer buffer) | |
842 | (setq start (point-min) end (point-max))) | |
843 | (insert-buffer-substring buffer start end) | |
844 | (setq newmark (point))) | |
845 | (push-mark newmark))) | |
846 | ||
847 | (defun append-to-buffer (buffer start end) | |
848 | "Append to specified buffer the text of the region. | |
849 | It is inserted into that buffer before its point. | |
850 | ||
851 | When calling from a program, give three arguments: | |
852 | BUFFER (or buffer name), START and END. | |
853 | START and END specify the portion of the current buffer to be copied." | |
854 | (interactive "BAppend to buffer: \nr") | |
855 | (let ((oldbuf (current-buffer))) | |
856 | (save-excursion | |
857 | (set-buffer (get-buffer-create buffer)) | |
858 | (insert-buffer-substring oldbuf start end)))) | |
859 | ||
860 | (defun prepend-to-buffer (buffer start end) | |
861 | "Prepend to specified buffer the text of the region. | |
862 | It is inserted into that buffer after its point. | |
863 | ||
864 | When calling from a program, give three arguments: | |
865 | BUFFER (or buffer name), START and END. | |
866 | START and END specify the portion of the current buffer to be copied." | |
867 | (interactive "BPrepend to buffer: \nr") | |
868 | (let ((oldbuf (current-buffer))) | |
869 | (save-excursion | |
870 | (set-buffer (get-buffer-create buffer)) | |
871 | (save-excursion | |
872 | (insert-buffer-substring oldbuf start end))))) | |
873 | ||
874 | (defun copy-to-buffer (buffer start end) | |
875 | "Copy to specified buffer the text of the region. | |
876 | It is inserted into that buffer, replacing existing text there. | |
877 | ||
878 | When calling from a program, give three arguments: | |
879 | BUFFER (or buffer name), START and END. | |
880 | START and END specify the portion of the current buffer to be copied." | |
881 | (interactive "BCopy to buffer: \nr") | |
882 | (let ((oldbuf (current-buffer))) | |
883 | (save-excursion | |
884 | (set-buffer (get-buffer-create buffer)) | |
885 | (erase-buffer) | |
886 | (save-excursion | |
887 | (insert-buffer-substring oldbuf start end))))) | |
888 | \f | |
889 | (defun mark () | |
890 | "Return this buffer's mark value as integer, or nil if no mark. | |
891 | If you are using this in an editing command, you are most likely making | |
892 | a mistake; see the documentation of `set-mark'." | |
893 | (marker-position (mark-marker))) | |
894 | ||
895 | (defun set-mark (pos) | |
896 | "Set this buffer's mark to POS. Don't use this function! | |
897 | That is to say, don't use this function unless you want | |
898 | the user to see that the mark has moved, and you want the previous | |
899 | mark position to be lost. | |
900 | ||
901 | Normally, when a new mark is set, the old one should go on the stack. | |
902 | This is why most applications should use push-mark, not set-mark. | |
903 | ||
904 | Novice emacs-lisp programmers often try to use the mark for the wrong | |
905 | purposes. The mark saves a location for the user's convenience. | |
906 | Most editing commands should not alter the mark. | |
907 | To remember a location for internal use in the Lisp program, | |
908 | store it in a Lisp variable. Example: | |
909 | ||
910 | (let ((beg (point))) (forward-line 1) (delete-region beg (point)))." | |
911 | ||
912 | (set-marker (mark-marker) pos (current-buffer))) | |
913 | ||
914 | (defvar mark-ring nil | |
915 | "The list of saved former marks of the current buffer, | |
916 | most recent first.") | |
917 | (make-variable-buffer-local 'mark-ring) | |
918 | ||
919 | (defconst mark-ring-max 16 | |
920 | "*Maximum size of mark ring. Start discarding off end if gets this big.") | |
921 | ||
922 | (defun set-mark-command (arg) | |
923 | "Set mark at where point is, or jump to mark. | |
924 | With no prefix argument, set mark, and push previous mark on mark ring. | |
925 | With argument, jump to mark, and pop into mark off the mark ring. | |
926 | ||
927 | Novice emacs-lisp programmers often try to use the mark for the wrong | |
928 | purposes. See the documentation of `set-mark' for more information." | |
929 | (interactive "P") | |
930 | (if (null arg) | |
931 | (push-mark) | |
932 | (if (null (mark)) | |
933 | (error "No mark set in this buffer") | |
934 | (goto-char (mark)) | |
935 | (pop-mark)))) | |
936 | ||
937 | (defun push-mark (&optional location nomsg) | |
938 | "Set mark at LOCATION (point, by default) and push old mark on mark ring. | |
939 | Displays \"Mark set\" unless the optional second arg NOMSG is non-nil. | |
940 | ||
941 | Novice emacs-lisp programmers often try to use the mark for the wrong | |
942 | purposes. See the documentation of `set-mark' for more information." | |
943 | (if (null (mark)) | |
944 | nil | |
945 | (setq mark-ring (cons (copy-marker (mark-marker)) mark-ring)) | |
946 | (if (> (length mark-ring) mark-ring-max) | |
947 | (progn | |
948 | (move-marker (car (nthcdr mark-ring-max mark-ring)) nil) | |
949 | (setcdr (nthcdr (1- mark-ring-max) mark-ring) nil)))) | |
950 | (set-mark (or location (point))) | |
951 | (or nomsg executing-macro (> (minibuffer-depth) 0) | |
952 | (message "Mark set")) | |
953 | nil) | |
954 | ||
955 | (defun pop-mark () | |
956 | "Pop off mark ring into the buffer's actual mark. | |
957 | Does not set point. Does nothing if mark ring is empty." | |
958 | (if mark-ring | |
959 | (progn | |
960 | (setq mark-ring (nconc mark-ring (list (copy-marker (mark-marker))))) | |
961 | (set-mark (+ 0 (car mark-ring))) | |
962 | (move-marker (car mark-ring) nil) | |
963 | (if (null (mark)) (ding)) | |
964 | (setq mark-ring (cdr mark-ring))))) | |
965 | ||
966 | (fset 'exchange-dot-and-mark 'exchange-point-and-mark) | |
967 | (defun exchange-point-and-mark () | |
968 | "Put the mark where point is now, and point where the mark is now." | |
969 | (interactive nil) | |
970 | (let ((omark (mark))) | |
971 | (if (null omark) | |
972 | (error "No mark set in this buffer")) | |
973 | (set-mark (point)) | |
974 | (goto-char omark) | |
975 | nil)) | |
976 | \f | |
977 | (defun next-line (arg) | |
978 | "Move cursor vertically down ARG lines. | |
979 | If there is no character in the target line exactly under the current column, | |
980 | the cursor is positioned after the character in that line which spans this | |
981 | column, or at the end of the line if it is not long enough. | |
982 | If there is no line in the buffer after this one, | |
983 | a newline character is inserted to create a line | |
984 | and the cursor moves to that line. | |
985 | ||
986 | The command \\[set-goal-column] can be used to create | |
987 | a semipermanent goal column to which this command always moves. | |
988 | Then it does not try to move vertically. This goal column is stored | |
989 | in `goal-column', which is nil when there is none. | |
990 | ||
991 | If you are thinking of using this in a Lisp program, consider | |
992 | using `forward-line' instead. It is usually easier to use | |
993 | and more reliable (no dependence on goal column, etc.)." | |
994 | (interactive "p") | |
995 | (if (= arg 1) | |
996 | (let ((opoint (point))) | |
997 | (forward-line 1) | |
998 | (if (or (= opoint (point)) | |
999 | (not (eq (preceding-char) ?\n))) | |
1000 | (insert ?\n) | |
1001 | (goto-char opoint) | |
1002 | (line-move arg))) | |
1003 | (line-move arg)) | |
1004 | nil) | |
1005 | ||
1006 | (defun previous-line (arg) | |
1007 | "Move cursor vertically up ARG lines. | |
1008 | If there is no character in the target line exactly over the current column, | |
1009 | the cursor is positioned after the character in that line which spans this | |
1010 | column, or at the end of the line if it is not long enough. | |
1011 | ||
1012 | The command \\[set-goal-column] can be used to create | |
1013 | a semipermanent goal column to which this command always moves. | |
1014 | Then it does not try to move vertically. | |
1015 | ||
1016 | If you are thinking of using this in a Lisp program, consider using | |
1017 | `forward-line' with negative argument instead.. It is usually easier | |
1018 | to use and more reliable (no dependence on goal column, etc.)." | |
1019 | (interactive "p") | |
1020 | (line-move (- arg)) | |
1021 | nil) | |
1022 | ||
1023 | (defconst track-eol nil | |
1024 | "*Non-nil means vertical motion starting at end of line keeps to ends of lines. | |
1025 | This means moving to the end of each line moved onto. | |
1026 | The beginning of a blank line does not count as the end of a line.") | |
1027 | ||
1028 | (make-variable-buffer-local | |
1029 | (defvar goal-column nil | |
1030 | "*Semipermanent goal column for vertical motion, as set by \\[set-goal-column], or nil.")) | |
1031 | ||
1032 | (defvar temporary-goal-column 0 | |
1033 | "Current goal column for vertical motion. | |
1034 | It is the column where point was | |
1035 | at the start of current run of vertical motion commands. | |
c637ae6f | 1036 | When the `track-eol' feature is doing its job, the value is 9999.") |
2076c87c JB |
1037 | |
1038 | (defun line-move (arg) | |
1039 | (if (not (or (eq last-command 'next-line) | |
1040 | (eq last-command 'previous-line))) | |
1041 | (setq temporary-goal-column | |
1042 | (if (and track-eol (eolp) | |
1043 | ;; Don't count beg of empty line as end of line | |
1044 | ;; unless we just did explicit end-of-line. | |
1045 | (or (not (bolp)) (eq last-command 'end-of-line))) | |
1046 | 9999 | |
1047 | (current-column)))) | |
1048 | (if (not (integerp selective-display)) | |
1049 | (forward-line arg) | |
1050 | ;; Move by arg lines, but ignore invisible ones. | |
1051 | (while (> arg 0) | |
1052 | (vertical-motion 1) | |
1053 | (forward-char -1) | |
1054 | (forward-line 1) | |
1055 | (setq arg (1- arg))) | |
1056 | (while (< arg 0) | |
1057 | (vertical-motion -1) | |
1058 | (beginning-of-line) | |
1059 | (setq arg (1+ arg)))) | |
1060 | (move-to-column (or goal-column temporary-goal-column)) | |
1061 | nil) | |
1062 | ||
1063 | ||
1064 | (defun set-goal-column (arg) | |
1065 | "Set the current horizontal position as a goal for \\[next-line] and \\[previous-line]. | |
1066 | Those commands will move to this position in the line moved to | |
1067 | rather than trying to keep the same horizontal position. | |
1068 | With a non-nil argument, clears out the goal column | |
1069 | so that \\[next-line] and \\[previous-line] resume vertical motion." | |
1070 | (interactive "P") | |
1071 | (if arg | |
1072 | (progn | |
1073 | (setq goal-column nil) | |
1074 | (message "No goal column")) | |
1075 | (setq goal-column (current-column)) | |
1076 | (message (substitute-command-keys | |
1077 | "Goal column %d (use \\[set-goal-column] with an arg to unset it)") | |
1078 | goal-column)) | |
1079 | nil) | |
1080 | \f | |
1081 | (defun transpose-chars (arg) | |
1082 | "Interchange characters around point, moving forward one character. | |
1083 | With prefix arg ARG, effect is to take character before point | |
1084 | and drag it forward past ARG other characters (backward if ARG negative). | |
1085 | If no argument and at end of line, the previous two chars are exchanged." | |
1086 | (interactive "*P") | |
1087 | (and (null arg) (eolp) (forward-char -1)) | |
1088 | (transpose-subr 'forward-char (prefix-numeric-value arg))) | |
1089 | ||
1090 | (defun transpose-words (arg) | |
1091 | "Interchange words around point, leaving point at end of them. | |
1092 | With prefix arg ARG, effect is to take word before or around point | |
1093 | and drag it forward past ARG other words (backward if ARG negative). | |
1094 | If ARG is zero, the words around or after point and around or after mark | |
1095 | are interchanged." | |
1096 | (interactive "*p") | |
1097 | (transpose-subr 'forward-word arg)) | |
1098 | ||
1099 | (defun transpose-sexps (arg) | |
1100 | "Like \\[transpose-words] but applies to sexps. | |
1101 | Does not work on a sexp that point is in the middle of | |
1102 | if it is a list or string." | |
1103 | (interactive "*p") | |
1104 | (transpose-subr 'forward-sexp arg)) | |
1105 | ||
1106 | (defun transpose-lines (arg) | |
1107 | "Exchange current line and previous line, leaving point after both. | |
1108 | With argument ARG, takes previous line and moves it past ARG lines. | |
1109 | With argument 0, interchanges line point is in with line mark is in." | |
1110 | (interactive "*p") | |
1111 | (transpose-subr (function | |
1112 | (lambda (arg) | |
1113 | (if (= arg 1) | |
1114 | (progn | |
1115 | ;; Move forward over a line, | |
1116 | ;; but create a newline if none exists yet. | |
1117 | (end-of-line) | |
1118 | (if (eobp) | |
1119 | (newline) | |
1120 | (forward-char 1))) | |
1121 | (forward-line arg)))) | |
1122 | arg)) | |
1123 | ||
1124 | (defun transpose-subr (mover arg) | |
1125 | (let (start1 end1 start2 end2) | |
1126 | (if (= arg 0) | |
1127 | (progn | |
1128 | (save-excursion | |
1129 | (funcall mover 1) | |
1130 | (setq end2 (point)) | |
1131 | (funcall mover -1) | |
1132 | (setq start2 (point)) | |
1133 | (goto-char (mark)) | |
1134 | (funcall mover 1) | |
1135 | (setq end1 (point)) | |
1136 | (funcall mover -1) | |
1137 | (setq start1 (point)) | |
1138 | (transpose-subr-1)) | |
1139 | (exchange-point-and-mark))) | |
1140 | (while (> arg 0) | |
1141 | (funcall mover -1) | |
1142 | (setq start1 (point)) | |
1143 | (funcall mover 1) | |
1144 | (setq end1 (point)) | |
1145 | (funcall mover 1) | |
1146 | (setq end2 (point)) | |
1147 | (funcall mover -1) | |
1148 | (setq start2 (point)) | |
1149 | (transpose-subr-1) | |
1150 | (goto-char end2) | |
1151 | (setq arg (1- arg))) | |
1152 | (while (< arg 0) | |
1153 | (funcall mover -1) | |
1154 | (setq start2 (point)) | |
1155 | (funcall mover -1) | |
1156 | (setq start1 (point)) | |
1157 | (funcall mover 1) | |
1158 | (setq end1 (point)) | |
1159 | (funcall mover 1) | |
1160 | (setq end2 (point)) | |
1161 | (transpose-subr-1) | |
1162 | (setq arg (1+ arg))))) | |
1163 | ||
1164 | (defun transpose-subr-1 () | |
1165 | (if (> (min end1 end2) (max start1 start2)) | |
1166 | (error "Don't have two things to transpose")) | |
1167 | (let ((word1 (buffer-substring start1 end1)) | |
1168 | (word2 (buffer-substring start2 end2))) | |
1169 | (delete-region start2 end2) | |
1170 | (goto-char start2) | |
1171 | (insert word1) | |
1172 | (goto-char (if (< start1 start2) start1 | |
1173 | (+ start1 (- (length word1) (length word2))))) | |
1174 | (delete-char (length word1)) | |
1175 | (insert word2))) | |
1176 | \f | |
1177 | (defconst comment-column 32 | |
1178 | "*Column to indent right-margin comments to. | |
1179 | Setting this variable automatically makes it local to the current buffer.") | |
1180 | (make-variable-buffer-local 'comment-column) | |
1181 | ||
1182 | (defconst comment-start nil | |
1183 | "*String to insert to start a new comment, or nil if no comment syntax defined.") | |
1184 | ||
1185 | (defconst comment-start-skip nil | |
1186 | "*Regexp to match the start of a comment plus everything up to its body. | |
1187 | If there are any \\(...\\) pairs, the comment delimiter text is held to begin | |
1188 | at the place matched by the close of the first pair.") | |
1189 | ||
1190 | (defconst comment-end "" | |
1191 | "*String to insert to end a new comment. | |
1192 | Should be an empty string if comments are terminated by end-of-line.") | |
1193 | ||
1194 | (defconst comment-indent-hook | |
1195 | '(lambda () comment-column) | |
1196 | "Function to compute desired indentation for a comment. | |
1197 | This function is called with no args with point at the beginning of | |
1198 | the comment's starting delimiter.") | |
1199 | ||
1200 | (defun indent-for-comment () | |
1201 | "Indent this line's comment to comment column, or insert an empty comment." | |
1202 | (interactive "*") | |
1203 | (beginning-of-line 1) | |
1204 | (if (null comment-start) | |
1205 | (error "No comment syntax defined") | |
1206 | (let* ((eolpos (save-excursion (end-of-line) (point))) | |
1207 | cpos indent begpos) | |
1208 | (if (re-search-forward comment-start-skip eolpos 'move) | |
1209 | (progn (setq cpos (point-marker)) | |
1210 | ;; Find the start of the comment delimiter. | |
1211 | ;; If there were paren-pairs in comment-start-skip, | |
1212 | ;; position at the end of the first pair. | |
1213 | (if (match-end 1) | |
1214 | (goto-char (match-end 1)) | |
1215 | ;; If comment-start-skip matched a string with internal | |
1216 | ;; whitespace (not final whitespace) then the delimiter | |
1217 | ;; start at the end of that whitespace. | |
1218 | ;; Otherwise, it starts at the beginning of what was matched. | |
1219 | (skip-chars-backward " \t" (match-beginning 0)) | |
1220 | (skip-chars-backward "^ \t" (match-beginning 0))))) | |
1221 | (setq begpos (point)) | |
1222 | ;; Compute desired indent. | |
1223 | (if (= (current-column) | |
1224 | (setq indent (funcall comment-indent-hook))) | |
1225 | (goto-char begpos) | |
1226 | ;; If that's different from current, change it. | |
1227 | (skip-chars-backward " \t") | |
1228 | (delete-region (point) begpos) | |
1229 | (indent-to indent)) | |
1230 | ;; An existing comment? | |
1231 | (if cpos | |
1232 | (progn (goto-char cpos) | |
1233 | (set-marker cpos nil)) | |
1234 | ;; No, insert one. | |
1235 | (insert comment-start) | |
1236 | (save-excursion | |
1237 | (insert comment-end)))))) | |
1238 | ||
1239 | (defun set-comment-column (arg) | |
1240 | "Set the comment column based on point. | |
1241 | With no arg, set the comment column to the current column. | |
1242 | With just minus as arg, kill any comment on this line. | |
1243 | With any other arg, set comment column to indentation of the previous comment | |
1244 | and then align or create a comment on this line at that column." | |
1245 | (interactive "P") | |
1246 | (if (eq arg '-) | |
1247 | (kill-comment nil) | |
1248 | (if arg | |
1249 | (progn | |
1250 | (save-excursion | |
1251 | (beginning-of-line) | |
1252 | (re-search-backward comment-start-skip) | |
1253 | (beginning-of-line) | |
1254 | (re-search-forward comment-start-skip) | |
1255 | (goto-char (match-beginning 0)) | |
1256 | (setq comment-column (current-column)) | |
1257 | (message "Comment column set to %d" comment-column)) | |
1258 | (indent-for-comment)) | |
1259 | (setq comment-column (current-column)) | |
1260 | (message "Comment column set to %d" comment-column)))) | |
1261 | ||
1262 | (defun kill-comment (arg) | |
1263 | "Kill the comment on this line, if any. | |
1264 | With argument, kill comments on that many lines starting with this one." | |
1265 | ;; this function loses in a lot of situations. it incorrectly recognises | |
1266 | ;; comment delimiters sometimes (ergo, inside a string), doesn't work | |
1267 | ;; with multi-line comments, can kill extra whitespace if comment wasn't | |
1268 | ;; through end-of-line, et cetera. | |
1269 | (interactive "P") | |
1270 | (or comment-start-skip (error "No comment syntax defined")) | |
1271 | (let ((count (prefix-numeric-value arg)) endc) | |
1272 | (while (> count 0) | |
1273 | (save-excursion | |
1274 | (end-of-line) | |
1275 | (setq endc (point)) | |
1276 | (beginning-of-line) | |
1277 | (and (string< "" comment-end) | |
1278 | (setq endc | |
1279 | (progn | |
1280 | (re-search-forward (regexp-quote comment-end) endc 'move) | |
1281 | (skip-chars-forward " \t") | |
1282 | (point)))) | |
1283 | (beginning-of-line) | |
1284 | (if (re-search-forward comment-start-skip endc t) | |
1285 | (progn | |
1286 | (goto-char (match-beginning 0)) | |
1287 | (skip-chars-backward " \t") | |
1288 | (kill-region (point) endc) | |
1289 | ;; to catch comments a line beginnings | |
1290 | (indent-according-to-mode)))) | |
1291 | (if arg (forward-line 1)) | |
1292 | (setq count (1- count))))) | |
1293 | ||
1294 | (defun comment-region (beg end &optional arg) | |
1295 | "Comment the region; third arg numeric means use ARG comment characters. | |
1296 | If ARG is negative, delete that many comment characters instead. | |
1297 | Comments are terminated on each line, even for syntax in which newline does | |
1298 | not end the comment. Blank lines do not get comments." | |
1299 | ;; if someone wants it to only put a comment-start at the beginning and | |
1300 | ;; comment-end at the end then typing it, C-x C-x, closing it, C-x C-x | |
1301 | ;; is easy enough. No option is made here for other than commenting | |
1302 | ;; every line. | |
1303 | (interactive "r\np") | |
1304 | (or comment-start (error "No comment syntax is defined")) | |
1305 | (if (> beg end) (let (mid) (setq mid beg beg end end mid))) | |
1306 | (save-excursion | |
1307 | (save-restriction | |
1308 | (let ((cs comment-start) (ce comment-end)) | |
1309 | (cond ((not arg) (setq arg 1)) | |
1310 | ((> arg 1) | |
1311 | (while (> (setq arg (1- arg)) 0) | |
1312 | (setq cs (concat cs comment-start) | |
1313 | ce (concat ce comment-end))))) | |
1314 | (narrow-to-region beg end) | |
1315 | (goto-char beg) | |
1316 | (while (not (eobp)) | |
1317 | (if (< arg 0) | |
1318 | (let ((count arg)) | |
1319 | (while (and (> 1 (setq count (1+ count))) | |
1320 | (looking-at (regexp-quote cs))) | |
1321 | (delete-char (length cs))) | |
1322 | (if (string= "" ce) () | |
1323 | (setq count arg) | |
1324 | (while (> 1 (setq count (1+ count))) | |
1325 | (end-of-line) | |
1326 | ;; this is questionable if comment-end ends in whitespace | |
1327 | ;; that is pretty brain-damaged though | |
1328 | (skip-chars-backward " \t") | |
1329 | (backward-char (length ce)) | |
1330 | (if (looking-at (regexp-quote ce)) | |
1331 | (delete-char (length ce)))))) | |
1332 | (if (looking-at "[ \t]*$") () | |
1333 | (insert cs) | |
1334 | (if (string= "" ce) () | |
1335 | (end-of-line) | |
1336 | (insert ce))) | |
1337 | (search-forward "\n" nil 'move))))))) | |
1338 | \f | |
1339 | (defun backward-word (arg) | |
1340 | "Move backward until encountering the end of a word. | |
1341 | With argument, do this that many times. | |
1342 | In programs, it is faster to call forward-word with negative arg." | |
1343 | (interactive "p") | |
1344 | (forward-word (- arg))) | |
1345 | ||
1346 | (defun mark-word (arg) | |
1347 | "Set mark arg words away from point." | |
1348 | (interactive "p") | |
1349 | (push-mark | |
1350 | (save-excursion | |
1351 | (forward-word arg) | |
1352 | (point)))) | |
1353 | ||
1354 | (defun kill-word (arg) | |
1355 | "Kill characters forward until encountering the end of a word. | |
1356 | With argument, do this that many times." | |
1357 | (interactive "p") | |
1358 | (kill-region (point) (progn (forward-word arg) (point)))) | |
1359 | ||
1360 | (defun backward-kill-word (arg) | |
1361 | "Kill characters backward until encountering the end of a word. | |
1362 | With argument, do this that many times." | |
1363 | (interactive "p") | |
1364 | (kill-word (- arg))) | |
1365 | \f | |
1366 | (defconst fill-prefix nil | |
1367 | "*String for filling to insert at front of new line, or nil for none. | |
1368 | Setting this variable automatically makes it local to the current buffer.") | |
1369 | (make-variable-buffer-local 'fill-prefix) | |
1370 | ||
1371 | (defconst auto-fill-inhibit-regexp nil | |
1372 | "*Regexp to match lines which should not be auto-filled.") | |
1373 | ||
1374 | (defun do-auto-fill () | |
1375 | (let (give-up) | |
1376 | (or (and auto-fill-inhibit-regexp | |
1377 | (save-excursion (beginning-of-line) | |
1378 | (looking-at auto-fill-inhibit-regexp))) | |
1379 | (while (and (not give-up) (> (current-column) fill-column)) | |
1380 | (let ((fill-point | |
1381 | (let ((opoint (point))) | |
1382 | (save-excursion | |
1383 | (move-to-column (1+ fill-column)) | |
1384 | (skip-chars-backward "^ \t\n") | |
1385 | (if (bolp) | |
1386 | (re-search-forward "[ \t]" opoint t)) | |
1387 | (skip-chars-backward " \t") | |
1388 | (point))))) | |
1389 | ;; If there is a space on the line before fill-point, | |
1390 | ;; and nonspaces precede it, break the line there. | |
1391 | (if (save-excursion | |
1392 | (goto-char fill-point) | |
1393 | (not (bolp))) | |
1394 | ;; If point is at the fill-point, do not `save-excursion'. | |
1395 | ;; Otherwise, if a comment prefix or fill-prefix is inserted, | |
1396 | ;; point will end up before it rather than after it. | |
1397 | (if (save-excursion | |
1398 | (skip-chars-backward " \t") | |
1399 | (= (point) fill-point)) | |
1400 | (indent-new-comment-line) | |
1401 | (save-excursion | |
1402 | (goto-char fill-point) | |
1403 | (indent-new-comment-line))) | |
1404 | ;; No place to break => stop trying. | |
1405 | (setq give-up t))))))) | |
1406 | ||
1407 | (defconst comment-multi-line nil | |
1408 | "*Non-nil means \\[indent-new-comment-line] should continue same comment | |
1409 | on new line, with no new terminator or starter.") | |
1410 | ||
1411 | (defun indent-new-comment-line () | |
1412 | "Break line at point and indent, continuing comment if presently within one. | |
1413 | The body of the continued comment is indented under the previous comment line." | |
1414 | (interactive "*") | |
1415 | (let (comcol comstart) | |
1416 | (skip-chars-backward " \t") | |
1417 | (delete-region (point) | |
1418 | (progn (skip-chars-forward " \t") | |
1419 | (point))) | |
1420 | (insert ?\n) | |
1421 | (save-excursion | |
1422 | (if (and comment-start-skip | |
1423 | (let ((opoint (point))) | |
1424 | (forward-line -1) | |
1425 | (re-search-forward comment-start-skip opoint t))) | |
1426 | ;; The old line is a comment. | |
1427 | ;; Set WIN to the pos of the comment-start. | |
1428 | ;; But if the comment is empty, look at preceding lines | |
1429 | ;; to find one that has a nonempty comment. | |
1430 | (let ((win (match-beginning 0))) | |
1431 | (while (and (eolp) (not (bobp)) | |
1432 | (let (opoint) | |
1433 | (beginning-of-line) | |
1434 | (setq opoint (point)) | |
1435 | (forward-line -1) | |
1436 | (re-search-forward comment-start-skip opoint t))) | |
1437 | (setq win (match-beginning 0))) | |
1438 | ;; Indent this line like what we found. | |
1439 | (goto-char win) | |
1440 | (setq comcol (current-column)) | |
1441 | (setq comstart (buffer-substring (point) (match-end 0)))))) | |
1442 | (if comcol | |
1443 | (let ((comment-column comcol) | |
1444 | (comment-start comstart) | |
1445 | (comment-end comment-end)) | |
1446 | (and comment-end (not (equal comment-end "")) | |
1447 | (if (not comment-multi-line) | |
1448 | (progn | |
1449 | (forward-char -1) | |
1450 | (insert comment-end) | |
1451 | (forward-char 1)) | |
1452 | (setq comment-column (+ comment-column (length comment-start)) | |
1453 | comment-start ""))) | |
1454 | (if (not (eolp)) | |
1455 | (setq comment-end "")) | |
1456 | (insert ?\n) | |
1457 | (forward-char -1) | |
1458 | (indent-for-comment) | |
1459 | (save-excursion | |
1460 | ;; Make sure we delete the newline inserted above. | |
1461 | (end-of-line) | |
1462 | (delete-char 1))) | |
1463 | (if fill-prefix | |
1464 | (insert fill-prefix) | |
1465 | (indent-according-to-mode))))) | |
1466 | ||
1467 | (defun auto-fill-mode (&optional arg) | |
1468 | "Toggle auto-fill mode. | |
1469 | With arg, turn auto-fill mode on if and only if arg is positive. | |
1470 | In auto-fill mode, inserting a space at a column beyond fill-column | |
1471 | automatically breaks the line at a previous space." | |
1472 | (interactive "P") | |
1473 | (prog1 (setq auto-fill-function | |
1474 | (if (if (null arg) | |
1475 | (not auto-fill-function) | |
1476 | (> (prefix-numeric-value arg) 0)) | |
1477 | 'do-auto-fill | |
1478 | nil)) | |
1479 | ;; update mode-line | |
1480 | (set-buffer-modified-p (buffer-modified-p)))) | |
1481 | ||
1482 | (defun turn-on-auto-fill () | |
1483 | "Unconditionally turn on Auto Fill mode." | |
1484 | (auto-fill-mode 1)) | |
1485 | ||
1486 | (defun set-fill-column (arg) | |
1487 | "Set fill-column to current column, or to argument if given. | |
1488 | fill-column's value is separate for each buffer." | |
1489 | (interactive "P") | |
1490 | (setq fill-column (if (integerp arg) arg (current-column))) | |
1491 | (message "fill-column set to %d" fill-column)) | |
1492 | \f | |
1493 | (defun set-selective-display (arg) | |
1494 | "Set selective-display to ARG; clear it if no arg. | |
1495 | When selective-display is a number > 0, | |
1496 | lines whose indentation is >= selective-display are not displayed. | |
1497 | selective-display's value is separate for each buffer." | |
1498 | (interactive "P") | |
1499 | (if (eq selective-display t) | |
1500 | (error "selective-display already in use for marked lines")) | |
1501 | (setq selective-display | |
1502 | (and arg (prefix-numeric-value arg))) | |
1503 | (set-window-start (selected-window) (window-start (selected-window))) | |
1504 | (princ "selective-display set to " t) | |
1505 | (prin1 selective-display t) | |
1506 | (princ "." t)) | |
1507 | ||
1508 | (defun overwrite-mode (arg) | |
1509 | "Toggle overwrite mode. | |
1510 | With arg, turn overwrite mode on iff arg is positive. | |
1511 | In overwrite mode, printing characters typed in replace existing text | |
1512 | on a one-for-one basis, rather than pushing it to the right." | |
1513 | (interactive "P") | |
1514 | (setq overwrite-mode | |
1515 | (if (null arg) (not overwrite-mode) | |
1516 | (> (prefix-numeric-value arg) 0))) | |
1517 | (set-buffer-modified-p (buffer-modified-p))) ;No-op, but updates mode line. | |
1518 | \f | |
1519 | (defvar blink-matching-paren t | |
1520 | "*Non-nil means show matching open-paren when close-paren is inserted.") | |
1521 | ||
1522 | (defconst blink-matching-paren-distance 4000 | |
1523 | "*If non-nil, is maximum distance to search for matching open-paren | |
1524 | when close-paren is inserted.") | |
1525 | ||
1526 | (defun blink-matching-open () | |
1527 | "Move cursor momentarily to the beginning of the sexp before point." | |
1528 | (interactive) | |
1529 | (and (> (point) (1+ (point-min))) | |
1530 | (/= (char-syntax (char-after (- (point) 2))) ?\\ ) | |
1531 | blink-matching-paren | |
1532 | (let* ((oldpos (point)) | |
1533 | (blinkpos) | |
1534 | (mismatch)) | |
1535 | (save-excursion | |
1536 | (save-restriction | |
1537 | (if blink-matching-paren-distance | |
1538 | (narrow-to-region (max (point-min) | |
1539 | (- (point) blink-matching-paren-distance)) | |
1540 | oldpos)) | |
1541 | (condition-case () | |
1542 | (setq blinkpos (scan-sexps oldpos -1)) | |
1543 | (error nil))) | |
1544 | (and blinkpos (/= (char-syntax (char-after blinkpos)) | |
1545 | ?\$) | |
1546 | (setq mismatch | |
1547 | (/= (char-after (1- oldpos)) | |
1548 | (logand (lsh (aref (syntax-table) | |
1549 | (char-after blinkpos)) | |
1550 | -8) | |
1551 | 255)))) | |
1552 | (if mismatch (setq blinkpos nil)) | |
1553 | (if blinkpos | |
1554 | (progn | |
1555 | (goto-char blinkpos) | |
1556 | (if (pos-visible-in-window-p) | |
1557 | (sit-for 1) | |
1558 | (goto-char blinkpos) | |
1559 | (message | |
1560 | "Matches %s" | |
1561 | (if (save-excursion | |
1562 | (skip-chars-backward " \t") | |
1563 | (not (bolp))) | |
1564 | (buffer-substring (progn (beginning-of-line) (point)) | |
1565 | (1+ blinkpos)) | |
1566 | (buffer-substring blinkpos | |
1567 | (progn | |
1568 | (forward-char 1) | |
1569 | (skip-chars-forward "\n \t") | |
1570 | (end-of-line) | |
1571 | (point))))))) | |
1572 | (cond (mismatch | |
1573 | (message "Mismatched parentheses")) | |
1574 | ((not blink-matching-paren-distance) | |
1575 | (message "Unmatched parenthesis")))))))) | |
1576 | ||
1577 | ;Turned off because it makes dbx bomb out. | |
1578 | (setq blink-paren-function 'blink-matching-open) | |
1579 | ||
1580 | ; this is just something for the luser to see in a keymap -- this is not | |
1581 | ; how quitting works normally! | |
1582 | (defun keyboard-quit () | |
1583 | "Signal a quit condition." | |
1584 | (interactive) | |
1585 | (signal 'quit nil)) | |
1586 | ||
1587 | (define-key global-map "\C-g" 'keyboard-quit) | |
1588 | \f | |
1589 | (defun set-variable (var val) | |
1590 | "Set VARIABLE to VALUE. VALUE is a Lisp object. | |
1591 | When using this interactively, supply a Lisp expression for VALUE. | |
1592 | If you want VALUE to be a string, you must surround it with doublequotes." | |
1593 | (interactive | |
1594 | (let* ((var (read-variable "Set variable: ")) | |
1595 | (minibuffer-help-form | |
1596 | '(funcall myhelp)) | |
1597 | (myhelp | |
1598 | (function | |
1599 | (lambda () | |
1600 | (with-output-to-temp-buffer "*Help*" | |
1601 | (prin1 var) | |
1602 | (princ "\nDocumentation:\n") | |
1603 | (princ (substring (documentation-property var 'variable-documentation) | |
1604 | 1)) | |
1605 | (if (boundp var) | |
1606 | (let ((print-length 20)) | |
1607 | (princ "\n\nCurrent value: ") | |
1608 | (prin1 (symbol-value var)))) | |
1609 | nil))))) | |
1610 | (list var | |
1611 | (eval-minibuffer (format "Set %s to value: " var))))) | |
1612 | (set var val)) | |
1613 | \f | |
1614 | ;These commands are defined in editfns.c | |
1615 | ;but they are not assigned to keys there. | |
1616 | (put 'narrow-to-region 'disabled t) | |
1617 | (define-key ctl-x-map "n" 'narrow-to-region) | |
1618 | (define-key ctl-x-map "w" 'widen) | |
1619 | ||
1620 | (define-key global-map "\C-j" 'newline-and-indent) | |
1621 | (define-key global-map "\C-m" 'newline) | |
1622 | (define-key global-map "\C-o" 'open-line) | |
1623 | (define-key esc-map "\C-o" 'split-line) | |
1624 | (define-key global-map "\C-q" 'quoted-insert) | |
1625 | (define-key esc-map "^" 'delete-indentation) | |
1626 | (define-key esc-map "\\" 'delete-horizontal-space) | |
1627 | (define-key esc-map "m" 'back-to-indentation) | |
1628 | (define-key ctl-x-map "\C-o" 'delete-blank-lines) | |
1629 | (define-key esc-map " " 'just-one-space) | |
1630 | (define-key esc-map "z" 'zap-to-char) | |
1631 | (define-key esc-map "=" 'count-lines-region) | |
1632 | (define-key ctl-x-map "=" 'what-cursor-position) | |
1633 | (define-key esc-map "\e" 'eval-expression) | |
1634 | (define-key ctl-x-map "\e" 'repeat-complex-command) | |
1635 | (define-key ctl-x-map "u" 'advertised-undo) | |
1636 | (define-key global-map "\C-_" 'undo) | |
1637 | (define-key esc-map "!" 'shell-command) | |
1638 | (define-key esc-map "|" 'shell-command-on-region) | |
1639 | ||
1640 | (define-key global-map "\C-u" 'universal-argument) | |
1641 | (let ((i ?0)) | |
1642 | (while (<= i ?9) | |
1643 | (define-key esc-map (char-to-string i) 'digit-argument) | |
1644 | (setq i (1+ i)))) | |
1645 | (define-key esc-map "-" 'negative-argument) | |
1646 | ||
1647 | (define-key global-map "\C-k" 'kill-line) | |
1648 | (define-key global-map "\C-w" 'kill-region) | |
1649 | (define-key esc-map "w" 'kill-ring-save) | |
1650 | (define-key esc-map "\C-w" 'append-next-kill) | |
1651 | (define-key global-map "\C-y" 'yank) | |
1652 | (define-key esc-map "y" 'yank-pop) | |
1653 | ||
1654 | (define-key ctl-x-map "a" 'append-to-buffer) | |
1655 | ||
1656 | (define-key global-map "\C-@" 'set-mark-command) | |
1657 | (define-key ctl-x-map "\C-x" 'exchange-point-and-mark) | |
1658 | ||
1659 | (define-key global-map "\C-n" 'next-line) | |
1660 | (define-key global-map "\C-p" 'previous-line) | |
1661 | (define-key ctl-x-map "\C-n" 'set-goal-column) | |
1662 | ||
c637ae6f JB |
1663 | (define-key global-map [up] 'previous-line) |
1664 | (define-key global-map [down] 'next-line) | |
1665 | (define-key global-map [left] 'backward-char) | |
1666 | (define-key global-map [right] 'forward-char) | |
1667 | ||
2076c87c JB |
1668 | (define-key global-map "\C-t" 'transpose-chars) |
1669 | (define-key esc-map "t" 'transpose-words) | |
1670 | (define-key esc-map "\C-t" 'transpose-sexps) | |
1671 | (define-key ctl-x-map "\C-t" 'transpose-lines) | |
1672 | ||
1673 | (define-key esc-map ";" 'indent-for-comment) | |
1674 | (define-key esc-map "j" 'indent-new-comment-line) | |
1675 | (define-key esc-map "\C-j" 'indent-new-comment-line) | |
1676 | (define-key ctl-x-map ";" 'set-comment-column) | |
1677 | (define-key ctl-x-map "f" 'set-fill-column) | |
1678 | (define-key ctl-x-map "$" 'set-selective-display) | |
1679 | ||
1680 | (define-key esc-map "@" 'mark-word) | |
1681 | (define-key esc-map "f" 'forward-word) | |
1682 | (define-key esc-map "b" 'backward-word) | |
1683 | (define-key esc-map "d" 'kill-word) | |
1684 | (define-key esc-map "\177" 'backward-kill-word) | |
1685 | ||
1686 | (define-key esc-map "<" 'beginning-of-buffer) | |
1687 | (define-key esc-map ">" 'end-of-buffer) | |
1688 | (define-key ctl-x-map "h" 'mark-whole-buffer) | |
1689 | (define-key esc-map "\\" 'delete-horizontal-space) | |
1690 | ||
1691 | (fset 'mode-specific-command-prefix (make-sparse-keymap)) | |
1692 | (defconst mode-specific-map (symbol-function 'mode-specific-command-prefix) | |
1693 | "Keymap for characters following C-c.") | |
1694 | (define-key global-map "\C-c" 'mode-specific-command-prefix) |