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[emacs.git] / lisp / comint.el
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1 ;;; comint.el --- general command interpreter in a window stuff
3 ;; Copyright (C) 1988,90,92,93,94,95,96,97,98,99,2000,01,02,2003
4 ;; Free Software Foundation, Inc.
6 ;; Author: Olin Shivers <shivers@cs.cmu.edu>
7 ;; Simon Marshall <simon@gnu.org>
8 ;; Maintainer: FSF
9 ;; Keywords: processes
11 ;; This file is part of GNU Emacs.
13 ;; GNU Emacs is free software; you can redistribute it and/or modify
14 ;; it under the terms of the GNU General Public License as published by
15 ;; the Free Software Foundation; either version 2, or (at your option)
16 ;; any later version.
18 ;; GNU Emacs is distributed in the hope that it will be useful,
19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 ;; GNU General Public License for more details.
23 ;; You should have received a copy of the GNU General Public License
24 ;; along with GNU Emacs; see the file COPYING. If not, write to the
25 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
26 ;; Boston, MA 02111-1307, USA.
28 ;;; Commentary:
30 ;; Please send me bug reports, bug fixes, and extensions, so that I can
31 ;; merge them into the master source.
32 ;; - Olin Shivers (shivers@cs.cmu.edu)
33 ;; - Simon Marshall (simon@gnu.org)
35 ;; This file defines a general command-interpreter-in-a-buffer package
36 ;; (comint mode). The idea is that you can build specific process-in-a-buffer
37 ;; modes on top of comint mode -- e.g., lisp, shell, scheme, T, soar, ....
38 ;; This way, all these specific packages share a common base functionality,
39 ;; and a common set of bindings, which makes them easier to use (and
40 ;; saves code, implementation time, etc., etc.).
42 ;; Several packages are already defined using comint mode:
43 ;; - shell.el defines a shell-in-a-buffer mode.
44 ;; - cmulisp.el defines a simple lisp-in-a-buffer mode.
46 ;; - The file cmuscheme.el defines a scheme-in-a-buffer mode.
47 ;; - The file tea.el tunes scheme and inferior-scheme modes for T.
48 ;; - The file soar.el tunes lisp and inferior-lisp modes for Soar.
49 ;; - cmutex.el defines tex and latex modes that invoke tex, latex, bibtex,
50 ;; previewers, and printers from within emacs.
51 ;; - background.el allows csh-like job control inside emacs.
52 ;; It is pretty easy to make new derived modes for other processes.
54 ;; For documentation on the functionality provided by comint mode, and
55 ;; the hooks available for customising it, see the comments below.
56 ;; For further information on the standard derived modes (shell,
57 ;; inferior-lisp, inferior-scheme, ...), see the relevant source files.
59 ;; For hints on converting existing process modes (e.g., tex-mode,
60 ;; background, dbx, gdb, kermit, prolog, telnet) to use comint-mode
61 ;; instead of shell-mode, see the notes at the end of this file.
64 ;; Brief Command Documentation:
65 ;;============================================================================
66 ;; Comint Mode Commands: (common to all derived modes, like shell & cmulisp
67 ;; mode)
69 ;; m-p comint-previous-input Cycle backwards in input history
70 ;; m-n comint-next-input Cycle forwards
71 ;; m-r comint-previous-matching-input Previous input matching a regexp
72 ;; m-s comint-next-matching-input Next input that matches
73 ;; m-c-l comint-show-output Show last batch of process output
74 ;; return comint-send-input
75 ;; c-d comint-delchar-or-maybe-eof Delete char unless at end of buff
76 ;; c-c c-a comint-bol-or-process-mark First time, move point to bol;
77 ;; second time, move to process-mark.
78 ;; c-c c-u comint-kill-input ^u
79 ;; c-c c-w backward-kill-word ^w
80 ;; c-c c-c comint-interrupt-subjob ^c
81 ;; c-c c-z comint-stop-subjob ^z
82 ;; c-c c-\ comint-quit-subjob ^\
83 ;; c-c c-o comint-delete-output Delete last batch of process output
84 ;; c-c c-r comint-show-output Show last batch of process output
85 ;; c-c c-l comint-dynamic-list-input-ring List input history
87 ;; Not bound by default in comint-mode (some are in shell mode)
88 ;; comint-run Run a program under comint-mode
89 ;; send-invisible Read a line w/o echo, and send to proc
90 ;; comint-dynamic-complete-filename Complete filename at point.
91 ;; comint-dynamic-list-filename-completions List completions in help buffer.
92 ;; comint-replace-by-expanded-filename Expand and complete filename at point;
93 ;; replace with expanded/completed name.
94 ;; comint-replace-by-expanded-history Expand history at point;
95 ;; replace with expanded name.
96 ;; comint-magic-space Expand history and add (a) space(s).
97 ;; comint-kill-subjob No mercy.
98 ;; comint-show-maximum-output Show as much output as possible.
99 ;; comint-continue-subjob Send CONT signal to buffer's process
100 ;; group. Useful if you accidentally
101 ;; suspend your process (with C-c C-z).
102 ;; comint-get-next-from-history Fetch successive input history lines
103 ;; comint-accumulate Combine lines to send them together
104 ;; as input.
105 ;; comint-goto-process-mark Move point to where process-mark is.
106 ;; comint-set-process-mark Set process-mark to point.
108 ;; comint-mode-hook is the comint mode hook. Basically for your keybindings.
110 ;;; Code:
112 (require 'ring)
114 ;; Buffer Local Variables:
115 ;;============================================================================
116 ;; Comint mode buffer local variables:
117 ;; comint-prompt-regexp string comint-bol uses to match prompt
118 ;; comint-delimiter-argument-list list For delimiters and arguments
119 ;; comint-last-input-start marker Handy if inferior always echoes
120 ;; comint-last-input-end marker For comint-delete-output command
121 ;; comint-input-ring-size integer For the input history
122 ;; comint-input-ring ring mechanism
123 ;; comint-input-ring-index number ...
124 ;; comint-save-input-ring-index number ...
125 ;; comint-input-autoexpand symbol ...
126 ;; comint-input-ignoredups boolean ...
127 ;; comint-dynamic-complete-functions hook For the completion mechanism
128 ;; comint-completion-fignore list ...
129 ;; comint-file-name-chars string ...
130 ;; comint-file-name-quote-list list ...
131 ;; comint-get-old-input function Hooks for specific
132 ;; comint-input-filter-functions hook process-in-a-buffer
133 ;; comint-output-filter-functions hook function modes.
134 ;; comint-preoutput-filter-functions hook
135 ;; comint-input-filter function ...
136 ;; comint-input-sender function ...
137 ;; comint-eol-on-send boolean ...
138 ;; comint-process-echoes boolean ...
139 ;; comint-scroll-to-bottom-on-input symbol For scroll behavior
140 ;; comint-scroll-to-bottom-on-output symbol ...
141 ;; comint-scroll-show-maximum-output boolean ...
142 ;; comint-accum-marker maker For comint-accumulate
144 ;; Comint mode non-buffer local variables:
145 ;; comint-completion-addsuffix boolean/cons For file name
146 ;; comint-completion-autolist boolean completion behavior
147 ;; comint-completion-recexact boolean ...
149 (defgroup comint nil
150 "General command interpreter in a window stuff."
151 :group 'processes)
153 (defgroup comint-completion nil
154 "Completion facilities in comint"
155 :group 'comint)
157 (defgroup comint-source nil
158 "Source finding facilities in comint"
159 :prefix "comint-"
160 :group 'comint)
162 (defvar comint-prompt-regexp "^"
163 "Regexp to recognise prompts in the inferior process.
164 Defaults to \"^\", the null string at BOL.
166 This variable is only used if the variable
167 `comint-use-prompt-regexp-instead-of-fields' is non-nil.
169 Good choices:
170 Canonical Lisp: \"^[^> \\n]*>+:? *\" (Lucid, franz, kcl, T, cscheme, oaklisp)
171 Lucid Common Lisp: \"^\\\\(>\\\\|\\\\(->\\\\)+\\\\) *\"
172 franz: \"^\\\\(->\\\\|<[0-9]*>:\\\\) *\"
173 kcl: \"^>+ *\"
174 shell: \"^[^#$%>\\n]*[#$%>] *\"
175 T: \"^>+ *\"
177 This is a good thing to set in mode hooks.")
179 (defvar comint-delimiter-argument-list ()
180 "List of characters to recognise as separate arguments in input.
181 Strings comprising a character in this list will separate the arguments
182 surrounding them, and also be regarded as arguments in their own right (unlike
183 whitespace). See `comint-arguments'.
184 Defaults to the empty list.
186 For shells, a good value is (?\\| ?& ?< ?> ?\\( ?\\) ?;).
188 This is a good thing to set in mode hooks.")
190 (defcustom comint-input-autoexpand nil
191 "*If non-nil, expand input command history references on completion.
192 This mirrors the optional behavior of tcsh (its autoexpand and histlit).
194 If the value is `input', then the expansion is seen on input.
195 If the value is `history', then the expansion is only when inserting
196 into the buffer's input ring. See also `comint-magic-space' and
197 `comint-dynamic-complete'.
199 This variable is buffer-local."
200 :type '(choice (const :tag "off" nil)
201 (const input)
202 (const history)
203 (other :tag "on" t))
204 :group 'comint)
206 (defface comint-highlight-input '((t (:weight bold)))
207 "Face to use to highlight user input."
208 :group 'comint)
210 (defface comint-highlight-prompt
211 '((((background dark)) (:foreground "cyan"))
212 (t (:foreground "dark blue")))
213 "Face to use to highlight prompts."
214 :group 'comint)
216 (defcustom comint-input-ignoredups nil
217 "*If non-nil, don't add input matching the last on the input ring.
218 This mirrors the optional behavior of bash.
220 This variable is buffer-local."
221 :type 'boolean
222 :group 'comint)
224 (defcustom comint-input-ring-file-name nil
225 "*If non-nil, name of the file to read/write input history.
226 See also `comint-read-input-ring' and `comint-write-input-ring'.
228 This variable is buffer-local, and is a good thing to set in mode hooks."
229 :type '(choice (const :tag "nil" nil)
230 file)
231 :group 'comint)
233 (defcustom comint-scroll-to-bottom-on-input nil
234 "*Controls whether input to interpreter causes window to scroll.
235 If nil, then do not scroll. If t or `all', scroll all windows showing buffer.
236 If `this', scroll only the selected window.
238 The default is nil.
240 See `comint-preinput-scroll-to-bottom'. This variable is buffer-local."
241 :type '(choice (const :tag "off" nil)
242 (const t)
243 (const all)
244 (const this))
245 :group 'comint)
247 (defcustom comint-move-point-for-output nil
248 "*Controls whether interpreter output moves point to the end of the output.
249 If nil, then output never moves point to the output.
250 (If the output occurs at point, it is inserted before point.)
251 If t or `all', move point in all windows showing the buffer.
252 If `this', move point only the selected window.
253 If `others', move point only in other windows, not in the selected window.
255 The default is nil.
257 See the variable `comint-scroll-show-maximum-output' and the function
258 `comint-postoutput-scroll-to-bottom'.
259 This variable is buffer-local in all comint buffers."
260 :type '(choice (const :tag "off" nil)
261 (const t)
262 (const all)
263 (const this)
264 (const others))
265 :group 'comint)
267 (defvaralias 'comint-scroll-to-bottom-on-output 'comint-move-point-for-output)
269 (defcustom comint-scroll-show-maximum-output t
270 "*Controls how to scroll due to interpreter output.
271 This variable applies when point is at the end of the buffer
272 \(either because it was originally there, or because
273 `comint-move-point-for-output' said to move it there)
274 and output from the subprocess is inserted.
276 Non-nil means scroll so that the window is full of text
277 and point is on the last line. A value of nil
278 means don't do anyting special--scroll normally.
280 See also the variable `comint-move-point-for-output' and the function
281 `comint-postoutput-scroll-to-bottom'.
282 This variable is buffer-local in all comint buffers."
283 :type 'boolean
284 :group 'comint)
286 (defcustom comint-buffer-maximum-size 1024
287 "*The maximum size in lines for comint buffers.
288 Comint buffers are truncated from the top to be no greater than this number, if
289 the function `comint-truncate-buffer' is on `comint-output-filter-functions'."
290 :type 'integer
291 :group 'comint)
293 (defvar comint-input-ring-size 32
294 "Size of input history ring.")
296 (defvar comint-input-ring-separator "\n"
297 "Separator between commands in the history file.")
299 (defvar comint-input-history-ignore "^#"
300 "Regexp for history entries that should be ignored when comint initializes.")
302 (defcustom comint-process-echoes nil
303 "*If non-nil, assume that the subprocess echoes any input.
304 If so, delete one copy of the input so that only one copy eventually
305 appears in the buffer.
307 This variable is buffer-local."
308 :type 'boolean
309 :group 'comint)
311 ;; AIX puts the name of the person being su'd to in front of the prompt.
312 ;; kinit prints a prompt like `Password for devnull@GNU.ORG: '.
313 ;; ksu prints a prompt like `Kerberos password for devnull/root@GNU.ORG: '.
314 ;; ssh-add prints a prompt like `Enter passphrase: '.
315 ;; Some implementations of passwd use "Password (again)" as the 2nd prompt.
316 (defcustom comint-password-prompt-regexp
317 "\\(\\([Oo]ld \\|[Nn]ew \\|'s \\|login \\|\
318 Kerberos \\|CVS \\|UNIX \\| SMB \\|^\\)\
319 [Pp]assword\\( (again)\\)?\\|\
320 pass phrase\\|\\(Enter\\|Repeat\\) passphrase\\)\
321 \\( for [^:]+\\)?:\\s *\\'"
322 "*Regexp matching prompts for passwords in the inferior process.
323 This is used by `comint-watch-for-password-prompt'."
324 :type 'regexp
325 :group 'comint)
327 ;; Here are the per-interpreter hooks.
328 (defvar comint-get-old-input (function comint-get-old-input-default)
329 "Function that returns old text in comint mode.
330 This function is called when return is typed while the point is in old
331 text. It returns the text to be submitted as process input. The
332 default is `comint-get-old-input-default', which either grabs the
333 current input field or grabs the current line and strips off leading
334 text matching `comint-prompt-regexp', depending on the value of
335 `comint-use-prompt-regexp-instead-of-fields'.")
337 (defvar comint-dynamic-complete-functions
338 '(comint-replace-by-expanded-history comint-dynamic-complete-filename)
339 "List of functions called to perform completion.
340 Functions should return non-nil if completion was performed.
341 See also `comint-dynamic-complete'.
343 This is a good thing to set in mode hooks.")
345 (defvar comint-input-filter
346 (function (lambda (str) (not (string-match "\\`\\s *\\'" str))))
347 "Predicate for filtering additions to input history.
348 Takes one argument, the input. If non-nil, the input may be saved on the input
349 history list. Default is to save anything that isn't all whitespace.")
351 (defvar comint-input-filter-functions '()
352 "Functions to call before input is sent to the process.
353 These functions get one argument, a string containing the text to send.
355 You can use `add-hook' to add functions to this list
356 either globally or locally.")
358 (defvar comint-output-filter-functions '(comint-postoutput-scroll-to-bottom)
359 "Functions to call after output is inserted into the buffer.
360 One possible function is `comint-postoutput-scroll-to-bottom'.
361 These functions get one argument, a string containing the text as originally
362 inserted. Note that this might not be the same as the buffer contents between
363 `comint-last-output-start' and the buffer's `process-mark', if other filter
364 functions have already modified the buffer.
366 See also `comint-preoutput-filter-functions'.
368 You can use `add-hook' to add functions to this list
369 either globally or locally.")
371 (defvar comint-input-sender-no-newline nil
372 "Non-nil directs the `comint-input-sender' function not to send a newline.")
374 (defvar comint-input-sender (function comint-simple-send)
375 "Function to actually send to PROCESS the STRING submitted by user.
376 Usually this is just `comint-simple-send', but if your mode needs to
377 massage the input string, put a different function here.
378 `comint-simple-send' just sends the string plus a newline.
379 \(If `comint-input-sender-no-newline' is non-nil, it omits the newline.)
380 This is called from the user command `comint-send-input'.")
382 (defcustom comint-eol-on-send t
383 "*Non-nil means go to the end of the line before sending input.
384 See `comint-send-input'."
385 :type 'boolean
386 :group 'comint)
388 ;; Note: If it is decided to purge comint-prompt-regexp from the source
389 ;; entirely, searching for uses of this variable will help to identify
390 ;; places that need attention.
391 (defcustom comint-use-prompt-regexp-instead-of-fields nil
392 "*If non-nil, use `comint-prompt-regexp' to distinguish prompts from user-input.
393 If nil, then program output and user-input are given different `field'
394 properties, which emacs commands can use to distinguish them (in
395 particular, common movement commands such as begining-of-line respect
396 field boundaries in a natural way)."
397 :type 'boolean
398 :group 'comint)
400 (defcustom comint-mode-hook '(turn-on-font-lock)
401 "Called upon entry into `comint-mode'
402 This is run before the process is cranked up."
403 :type 'hook
404 :group 'comint)
406 (defcustom comint-exec-hook '()
407 "Called each time a process is exec'd by `comint-exec'.
408 This is called after the process is cranked up. It is useful for things that
409 must be done each time a process is executed in a comint mode buffer (e.g.,
410 `(process-kill-without-query)'). In contrast, the `comint-mode-hook' is only
411 executed once when the buffer is created."
412 :type 'hook
413 :group 'comint)
415 (defvar comint-mode-map nil)
417 (defvar comint-ptyp t
418 "Non-nil if communications via pty; false if by pipe. Buffer local.
419 This is to work around a bug in Emacs process signaling.")
421 (defvar comint-input-ring nil)
422 (defvar comint-last-input-start)
423 (defvar comint-last-input-end)
424 (defvar comint-last-output-start)
425 (defvar comint-input-ring-index nil
426 "Index of last matched history element.")
427 (defvar comint-matching-input-from-input-string ""
428 "Input previously used to match input history.")
429 (defvar comint-save-input-ring-index
430 "Last input ring index which you copied.
431 This is to support the command \\[comint-get-next-from-history].")
433 (defvar comint-accum-marker nil
434 "Non-nil if you are accumulating input lines to send as input together.
435 The command \\[comint-accumulate] sets this.")
437 (put 'comint-replace-by-expanded-history 'menu-enable 'comint-input-autoexpand)
438 (put 'comint-input-ring 'permanent-local t)
439 (put 'comint-input-ring-index 'permanent-local t)
440 (put 'comint-save-input-ring-index 'permanent-local t)
441 (put 'comint-input-autoexpand 'permanent-local t)
442 (put 'comint-input-filter-functions 'permanent-local t)
443 (put 'comint-output-filter-functions 'permanent-local t)
444 (put 'comint-preoutput-filter-functions 'permanent-local t)
445 (put 'comint-scroll-to-bottom-on-input 'permanent-local t)
446 (put 'comint-move-point-for-output 'permanent-local t)
447 (put 'comint-scroll-show-maximum-output 'permanent-local t)
448 (put 'comint-ptyp 'permanent-local t)
450 (put 'comint-mode 'mode-class 'special)
452 (define-derived-mode comint-mode fundamental-mode "Comint"
453 "Major mode for interacting with an inferior interpreter.
454 Interpreter name is same as buffer name, sans the asterisks.
455 Return at end of buffer sends line as input.
456 Return not at end copies rest of line to end and sends it.
457 Setting variable `comint-eol-on-send' means jump to the end of the line
458 before submitting new input.
460 This mode is customised to create major modes such as Inferior Lisp
461 mode, Shell mode, etc. This can be done by setting the hooks
462 `comint-input-filter-functions', `comint-input-filter', `comint-input-sender'
463 and `comint-get-old-input' to appropriate functions, and the variable
464 `comint-prompt-regexp' to the appropriate regular expression.
466 An input history is maintained of size `comint-input-ring-size', and
467 can be accessed with the commands \\[comint-next-input], \\[comint-previous-input], and \\[comint-dynamic-list-input-ring].
468 Input ring history expansion can be achieved with the commands
469 \\[comint-replace-by-expanded-history] or \\[comint-magic-space].
470 Input ring expansion is controlled by the variable `comint-input-autoexpand',
471 and addition is controlled by the variable `comint-input-ignoredups'.
473 Commands with no default key bindings include `send-invisible',
474 `comint-dynamic-complete', `comint-dynamic-list-filename-completions', and
475 `comint-magic-space'.
477 Input to, and output from, the subprocess can cause the window to scroll to
478 the end of the buffer. See variables `comint-output-filter-functions',
479 `comint-preoutput-filter-functions', `comint-scroll-to-bottom-on-input',
480 and `comint-move-point-for-output'.
482 If you accidentally suspend your process, use \\[comint-continue-subjob]
483 to continue it.
485 \\{comint-mode-map}
487 Entry to this mode runs the hooks on `comint-mode-hook'."
488 (setq mode-line-process '(":%s"))
489 (set (make-local-variable 'comint-last-input-start) (point-min-marker))
490 (set (make-local-variable 'comint-last-input-end) (point-min-marker))
491 (set (make-local-variable 'comint-last-output-start) (make-marker))
492 (make-local-variable 'comint-last-prompt-overlay)
493 (make-local-variable 'comint-prompt-regexp) ; Don't set; default
494 (make-local-variable 'comint-input-ring-size) ; ...to global val.
495 (make-local-variable 'comint-input-ring)
496 (make-local-variable 'comint-input-ring-file-name)
497 (or (and (boundp 'comint-input-ring) comint-input-ring)
498 (setq comint-input-ring (make-ring comint-input-ring-size)))
499 (make-local-variable 'comint-input-ring-index)
500 (make-local-variable 'comint-save-input-ring-index)
501 (or (and (boundp 'comint-input-ring-index) comint-input-ring-index)
502 (setq comint-input-ring-index nil))
503 (or (and (boundp 'comint-save-input-ring-index) comint-save-input-ring-index)
504 (setq comint-save-input-ring-index nil))
505 (make-local-variable 'comint-matching-input-from-input-string)
506 (make-local-variable 'comint-input-autoexpand)
507 (make-local-variable 'comint-input-ignoredups)
508 (make-local-variable 'comint-delimiter-argument-list)
509 (make-local-variable 'comint-completion-fignore)
510 (make-local-variable 'comint-get-old-input)
511 (make-local-variable 'comint-input-filter)
512 (make-local-variable 'comint-input-sender)
513 (make-local-variable 'comint-eol-on-send)
514 (make-local-variable 'comint-scroll-to-bottom-on-input)
515 (make-local-variable 'comint-move-point-for-output)
516 (make-local-variable 'comint-scroll-show-maximum-output)
517 ;; This makes it really work to keep point at the bottom.
518 (make-local-variable 'scroll-conservatively)
519 (setq scroll-conservatively 10000)
520 (add-hook 'pre-command-hook 'comint-preinput-scroll-to-bottom t t)
521 (make-local-variable 'comint-ptyp)
522 (make-local-variable 'comint-process-echoes)
523 (make-local-variable 'comint-file-name-chars)
524 (make-local-variable 'comint-file-name-quote-list)
525 (set (make-local-variable 'comint-accum-marker) (make-marker))
526 (add-hook 'change-major-mode-hook 'font-lock-defontify nil t)
527 ;; This behavior is not useful in comint buffers, and is annoying
528 (set (make-local-variable 'next-line-add-newlines) nil))
530 (if comint-mode-map
532 ;; Keys:
533 (setq comint-mode-map (make-sparse-keymap))
534 (define-key comint-mode-map "\ep" 'comint-previous-input)
535 (define-key comint-mode-map "\en" 'comint-next-input)
536 (define-key comint-mode-map [C-up] 'comint-previous-input)
537 (define-key comint-mode-map [C-down] 'comint-next-input)
538 (define-key comint-mode-map "\er" 'comint-previous-matching-input)
539 (define-key comint-mode-map "\es" 'comint-next-matching-input)
540 (define-key comint-mode-map [?\C-c ?\M-r] 'comint-previous-matching-input-from-input)
541 (define-key comint-mode-map [?\C-c ?\M-s] 'comint-next-matching-input-from-input)
542 (define-key comint-mode-map "\e\C-l" 'comint-show-output)
543 (define-key comint-mode-map "\C-m" 'comint-send-input)
544 (define-key comint-mode-map "\C-d" 'comint-delchar-or-maybe-eof)
545 (define-key comint-mode-map "\C-c " 'comint-accumulate)
546 (define-key comint-mode-map "\C-c\C-x" 'comint-get-next-from-history)
547 (define-key comint-mode-map "\C-c\C-a" 'comint-bol-or-process-mark)
548 (define-key comint-mode-map "\C-c\C-u" 'comint-kill-input)
549 (define-key comint-mode-map "\C-c\C-w" 'backward-kill-word)
550 (define-key comint-mode-map "\C-c\C-c" 'comint-interrupt-subjob)
551 (define-key comint-mode-map "\C-c\C-z" 'comint-stop-subjob)
552 (define-key comint-mode-map "\C-c\C-\\" 'comint-quit-subjob)
553 (define-key comint-mode-map "\C-c\C-m" 'comint-copy-old-input)
554 (define-key comint-mode-map "\C-c\C-o" 'comint-delete-output)
555 (define-key comint-mode-map "\C-c\C-r" 'comint-show-output)
556 (define-key comint-mode-map "\C-c\C-e" 'comint-show-maximum-output)
557 (define-key comint-mode-map "\C-c\C-l" 'comint-dynamic-list-input-ring)
558 (define-key comint-mode-map "\C-c\C-n" 'comint-next-prompt)
559 (define-key comint-mode-map "\C-c\C-p" 'comint-previous-prompt)
560 (define-key comint-mode-map "\C-c\C-d" 'comint-send-eof)
561 (define-key comint-mode-map "\C-c\C-s" 'comint-write-output)
562 (define-key comint-mode-map "\C-c." 'comint-insert-previous-argument)
563 ;; Mouse Buttons:
564 (define-key comint-mode-map [mouse-2] 'comint-insert-clicked-input)
565 ;; Menu bars:
566 ;; completion:
567 (define-key comint-mode-map [menu-bar completion]
568 (cons "Complete" (make-sparse-keymap "Complete")))
569 (define-key comint-mode-map [menu-bar completion complete-expand]
570 '("Expand File Name" . comint-replace-by-expanded-filename))
571 (define-key comint-mode-map [menu-bar completion complete-listing]
572 '("File Completion Listing" . comint-dynamic-list-filename-completions))
573 (define-key comint-mode-map [menu-bar completion complete-file]
574 '("Complete File Name" . comint-dynamic-complete-filename))
575 (define-key comint-mode-map [menu-bar completion complete]
576 '("Complete Before Point" . comint-dynamic-complete))
577 ;; Input history:
578 (define-key comint-mode-map [menu-bar inout]
579 (cons "In/Out" (make-sparse-keymap "In/Out")))
580 (define-key comint-mode-map [menu-bar inout delete-output]
581 '("Delete Current Output Group" . comint-delete-output))
582 (define-key comint-mode-map [menu-bar inout append-output-to-file]
583 '("Append Current Output Group to File" . comint-append-output-to-file))
584 (define-key comint-mode-map [menu-bar inout write-output]
585 '("Write Current Output Group to File" . comint-write-output))
586 (define-key comint-mode-map [menu-bar inout next-prompt]
587 '("Forward Output Group" . comint-next-prompt))
588 (define-key comint-mode-map [menu-bar inout previous-prompt]
589 '("Backward Output Group" . comint-previous-prompt))
590 (define-key comint-mode-map [menu-bar inout show-maximum-output]
591 '("Show Maximum Output" . comint-show-maximum-output))
592 (define-key comint-mode-map [menu-bar inout show-output]
593 '("Show Current Output Group" . comint-show-output))
594 (define-key comint-mode-map [menu-bar inout kill-input]
595 '("Kill Current Input" . comint-kill-input))
596 (define-key comint-mode-map [menu-bar inout copy-input]
597 '("Copy Old Input" . comint-copy-old-input))
598 (define-key comint-mode-map [menu-bar inout forward-matching-history]
599 '("Forward Matching Input..." . comint-forward-matching-input))
600 (define-key comint-mode-map [menu-bar inout backward-matching-history]
601 '("Backward Matching Input..." . comint-backward-matching-input))
602 (define-key comint-mode-map [menu-bar inout next-matching-history]
603 '("Next Matching Input..." . comint-next-matching-input))
604 (define-key comint-mode-map [menu-bar inout previous-matching-history]
605 '("Previous Matching Input..." . comint-previous-matching-input))
606 (define-key comint-mode-map [menu-bar inout next-matching-history-from-input]
607 '("Next Matching Current Input" . comint-next-matching-input-from-input))
608 (define-key comint-mode-map [menu-bar inout previous-matching-history-from-input]
609 '("Previous Matching Current Input" . comint-previous-matching-input-from-input))
610 (define-key comint-mode-map [menu-bar inout next-history]
611 '("Next Input" . comint-next-input))
612 (define-key comint-mode-map [menu-bar inout previous-history]
613 '("Previous Input" . comint-previous-input))
614 (define-key comint-mode-map [menu-bar inout list-history]
615 '("List Input History" . comint-dynamic-list-input-ring))
616 (define-key comint-mode-map [menu-bar inout expand-history]
617 '("Expand History Before Point" . comint-replace-by-expanded-history))
618 ;; Signals
619 (define-key comint-mode-map [menu-bar signals]
620 (cons "Signals" (make-sparse-keymap "Signals")))
621 (define-key comint-mode-map [menu-bar signals eof]
622 '("EOF" . comint-send-eof))
623 (define-key comint-mode-map [menu-bar signals kill]
624 '("KILL" . comint-kill-subjob))
625 (define-key comint-mode-map [menu-bar signals quit]
626 '("QUIT" . comint-quit-subjob))
627 (define-key comint-mode-map [menu-bar signals cont]
628 '("CONT" . comint-continue-subjob))
629 (define-key comint-mode-map [menu-bar signals stop]
630 '("STOP" . comint-stop-subjob))
631 (define-key comint-mode-map [menu-bar signals break]
632 '("BREAK" . comint-interrupt-subjob))
633 ;; Put them in the menu bar:
634 (setq menu-bar-final-items (append '(completion inout signals)
635 menu-bar-final-items))
638 (defun comint-check-proc (buffer)
639 "Return t if there is a living process associated w/buffer BUFFER.
640 Living means the status is `open', `run', or `stop'.
641 BUFFER can be either a buffer or the name of one."
642 (let ((proc (get-buffer-process buffer)))
643 (and proc (memq (process-status proc) '(open run stop)))))
645 ;;;###autoload
646 (defun make-comint-in-buffer (name buffer program &optional startfile &rest switches)
647 "Make a comint process NAME in BUFFER, running PROGRAM.
648 If BUFFER is nil, it defaults to NAME surrounded by `*'s.
649 PROGRAM should be either a string denoting an executable program to create
650 via `start-process', or a cons pair of the form (HOST . SERVICE) denoting a TCP
651 connection to be opened via `open-network-stream'. If there is already a
652 running process in that buffer, it is not restarted. Optional third arg
653 STARTFILE is the name of a file to send the contents of to the process.
655 If PROGRAM is a string, any more args are arguments to PROGRAM."
656 (or (fboundp 'start-process)
657 (error "Multi-processing is not supported for this system"))
658 (setq buffer (get-buffer-create (or buffer (concat "*" name "*"))))
659 ;; If no process, or nuked process, crank up a new one and put buffer in
660 ;; comint mode. Otherwise, leave buffer and existing process alone.
661 (unless (comint-check-proc buffer)
662 (with-current-buffer buffer
663 (unless (derived-mode-p 'comint-mode)
664 (comint-mode))) ; Install local vars, mode, keymap, ...
665 (comint-exec buffer name program startfile switches))
666 buffer)
668 ;;;###autoload
669 (defun make-comint (name program &optional startfile &rest switches)
670 "Make a comint process NAME in a buffer, running PROGRAM.
671 The name of the buffer is made by surrounding NAME with `*'s.
672 PROGRAM should be either a string denoting an executable program to create
673 via `start-process', or a cons pair of the form (HOST . SERVICE) denoting a TCP
674 connection to be opened via `open-network-stream'. If there is already a
675 running process in that buffer, it is not restarted. Optional third arg
676 STARTFILE is the name of a file to send the contents of to the process.
678 If PROGRAM is a string, any more args are arguments to PROGRAM."
679 (apply #'make-comint-in-buffer name nil program startfile switches))
681 ;;;###autoload
682 (defun comint-run (program)
683 "Run PROGRAM in a comint buffer and switch to it.
684 The buffer name is made by surrounding the file name of PROGRAM with `*'s.
685 The file name is used to make a symbol name, such as `comint-sh-hook', and any
686 hooks on this symbol are run in the buffer.
687 See `make-comint' and `comint-exec'."
688 (interactive "sRun program: ")
689 (let ((name (file-name-nondirectory program)))
690 (switch-to-buffer (make-comint name program))
691 (run-hooks (intern-soft (concat "comint-" name "-hook")))))
693 (defun comint-exec (buffer name command startfile switches)
694 "Start up a process in buffer BUFFER for comint modes.
695 Blasts any old process running in the buffer. Doesn't set the buffer mode.
696 You can use this to cheaply run a series of processes in the same comint
697 buffer. The hook `comint-exec-hook' is run after each exec."
698 (with-current-buffer buffer
699 (let ((proc (get-buffer-process buffer))) ; Blast any old process.
700 (if proc (delete-process proc)))
701 ;; Crank up a new process
702 (let ((proc
703 (if (consp command)
704 (open-network-stream name buffer (car command) (cdr command))
705 (comint-exec-1 name buffer command switches))))
706 (set-process-filter proc 'comint-output-filter)
707 (make-local-variable 'comint-ptyp)
708 (setq comint-ptyp process-connection-type) ; t if pty, nil if pipe.
709 ;; Jump to the end, and set the process mark.
710 (goto-char (point-max))
711 (set-marker (process-mark proc) (point))
712 ;; Feed it the startfile.
713 (cond (startfile
714 ;;This is guaranteed to wait long enough
715 ;;but has bad results if the comint does not prompt at all
716 ;; (while (= size (buffer-size))
717 ;; (sleep-for 1))
718 ;;I hope 1 second is enough!
719 (sleep-for 1)
720 (goto-char (point-max))
721 (insert-file-contents startfile)
722 (setq startfile (buffer-substring (point) (point-max)))
723 (delete-region (point) (point-max))
724 (comint-send-string proc startfile)))
725 (run-hooks 'comint-exec-hook)
726 buffer)))
728 ;; This auxiliary function cranks up the process for comint-exec in
729 ;; the appropriate environment.
731 (defun comint-exec-1 (name buffer command switches)
732 (let ((process-environment
733 (nconc
734 ;; If using termcap, we specify `emacs' as the terminal type
735 ;; because that lets us specify a width.
736 ;; If using terminfo, we specify `dumb' because that is
737 ;; a defined terminal type. `emacs' is not a defined terminal type
738 ;; and there is no way for us to define it here.
739 ;; Some programs that use terminfo get very confused
740 ;; if TERM is not a valid terminal type.
741 ;; ;; There is similar code in compile.el.
742 (if (and (boundp 'system-uses-terminfo) system-uses-terminfo)
743 (list "TERM=dumb" "TERMCAP="
744 (format "COLUMNS=%d" (window-width)))
745 (list "TERM=emacs"
746 (format "TERMCAP=emacs:co#%d:tc=unknown:" (window-width))))
747 (if (getenv "EMACS") nil (list "EMACS=t"))
748 process-environment))
749 (default-directory
750 (if (file-accessible-directory-p default-directory)
751 default-directory
752 "/"))
753 proc decoding encoding changed)
754 (let ((exec-path (if (file-name-directory command)
755 ;; If the command has slashes, make sure we
756 ;; first look relative to the current directory.
757 (cons default-directory exec-path) exec-path)))
758 (setq proc (apply 'start-process name buffer command switches)))
759 (let ((coding-systems (process-coding-system proc)))
760 (setq decoding (car coding-systems)
761 encoding (cdr coding-systems)))
762 ;; If start-process decided to use some coding system for decoding
763 ;; data sent from the process and the coding system doesn't
764 ;; specify EOL conversion, we had better convert CRLF to LF.
765 (if (vectorp (coding-system-eol-type decoding))
766 (setq decoding (coding-system-change-eol-conversion decoding 'dos)
767 changed t))
768 ;; Even if start-process left the coding system for encoding data
769 ;; sent from the process undecided, we had better use the same one
770 ;; as what we use for decoding. But, we should suppress EOL
771 ;; conversion.
772 (if (and decoding (not encoding))
773 (setq encoding (coding-system-change-eol-conversion decoding 'unix)
774 changed t))
775 (if changed
776 (set-process-coding-system proc decoding encoding))
777 proc))
780 (defun comint-insert-clicked-input (event)
781 "In a comint buffer, set the current input to the clicked-on previous input."
782 (interactive "e")
783 (let ((pos (posn-point (event-end event))))
784 (if (not (eq (get-char-property pos 'field) 'input))
785 ;; No input at POS, fall back to the global definition.
786 (let* ((keys (this-command-keys))
787 (last-key (and (vectorp keys) (aref keys (1- (length keys)))))
788 (fun (and last-key (lookup-key global-map (vector last-key)))))
789 (and fun (call-interactively fun)))
790 ;; There's previous input at POS, insert it at the end of the buffer.
791 (goto-char (point-max))
792 ;; First delete any old unsent input at the end
793 (delete-region
794 (or (marker-position comint-accum-marker)
795 (process-mark (get-buffer-process (current-buffer))))
796 (point))
797 ;; Insert the clicked-upon input
798 (insert (buffer-substring-no-properties
799 (previous-single-char-property-change (1+ pos) 'field)
800 (next-single-char-property-change pos 'field))))))
804 ;; Input history processing in a buffer
805 ;; ===========================================================================
806 ;; Useful input history functions, courtesy of the Ergo group.
808 ;; Eleven commands:
809 ;; comint-dynamic-list-input-ring List history in help buffer.
810 ;; comint-previous-input Previous input...
811 ;; comint-previous-matching-input ...matching a string.
812 ;; comint-previous-matching-input-from-input ... matching the current input.
813 ;; comint-next-input Next input...
814 ;; comint-next-matching-input ...matching a string.
815 ;; comint-next-matching-input-from-input ... matching the current input.
816 ;; comint-backward-matching-input Backwards input...
817 ;; comint-forward-matching-input ...matching a string.
818 ;; comint-replace-by-expanded-history Expand history at point;
819 ;; replace with expanded history.
820 ;; comint-magic-space Expand history and insert space.
822 ;; Three functions:
823 ;; comint-read-input-ring Read into comint-input-ring...
824 ;; comint-write-input-ring Write to comint-input-ring-file-name.
825 ;; comint-replace-by-expanded-history-before-point Workhorse function.
827 (defun comint-read-input-ring (&optional silent)
828 "Sets the buffer's `comint-input-ring' from a history file.
829 The name of the file is given by the variable `comint-input-ring-file-name'.
830 The history ring is of size `comint-input-ring-size', regardless of file size.
831 If `comint-input-ring-file-name' is nil this function does nothing.
833 If the optional argument SILENT is non-nil, we say nothing about a
834 failure to read the history file.
836 This function is useful for major mode commands and mode hooks.
838 The commands stored in the history file are separated by the
839 `comint-input-ring-separator', and entries that match
840 `comint-input-history-ignore' are ignored. The most recent command
841 comes last.
843 See also `comint-input-ignoredups' and `comint-write-input-ring'."
844 (cond ((or (null comint-input-ring-file-name)
845 (equal comint-input-ring-file-name ""))
846 nil)
847 ((not (file-readable-p comint-input-ring-file-name))
848 (or silent
849 (message "Cannot read history file %s"
850 comint-input-ring-file-name)))
852 (let* ((history-buf (get-buffer-create " *temp*"))
853 (file comint-input-ring-file-name)
854 (count 0)
855 (size comint-input-ring-size)
856 (ring (make-ring size)))
857 (unwind-protect
858 (save-excursion
859 (set-buffer history-buf)
860 (widen)
861 (erase-buffer)
862 (insert-file-contents file)
863 ;; Save restriction in case file is already visited...
864 ;; Watch for those date stamps in history files!
865 (goto-char (point-max))
866 (let (start end history)
867 (while (and (< count comint-input-ring-size)
868 (re-search-backward comint-input-ring-separator nil t)
869 (setq end (match-beginning 0)))
870 (if (re-search-backward comint-input-ring-separator nil t)
871 (setq start (match-end 0))
872 (setq start (point-min)))
873 (setq history (buffer-substring start end))
874 (goto-char start)
875 (if (and (not (string-match comint-input-history-ignore history))
876 (or (null comint-input-ignoredups)
877 (ring-empty-p ring)
878 (not (string-equal (ring-ref ring 0) history))))
879 (progn
880 (ring-insert-at-beginning ring history)
881 (setq count (1+ count)))))))
882 (kill-buffer history-buf))
883 (setq comint-input-ring ring
884 comint-input-ring-index nil)))))
886 (defun comint-write-input-ring ()
887 "Writes the buffer's `comint-input-ring' to a history file.
888 The name of the file is given by the variable `comint-input-ring-file-name'.
889 The original contents of the file are lost if `comint-input-ring' is not empty.
890 If `comint-input-ring-file-name' is nil this function does nothing.
892 Useful within process sentinels.
894 See also `comint-read-input-ring'."
895 (cond ((or (null comint-input-ring-file-name)
896 (equal comint-input-ring-file-name "")
897 (null comint-input-ring) (ring-empty-p comint-input-ring))
898 nil)
899 ((not (file-writable-p comint-input-ring-file-name))
900 (message "Cannot write history file %s" comint-input-ring-file-name))
902 (let* ((history-buf (get-buffer-create " *Temp Input History*"))
903 (ring comint-input-ring)
904 (file comint-input-ring-file-name)
905 (index (ring-length ring)))
906 ;; Write it all out into a buffer first. Much faster, but messier,
907 ;; than writing it one line at a time.
908 (save-excursion
909 (set-buffer history-buf)
910 (erase-buffer)
911 (while (> index 0)
912 (setq index (1- index))
913 (insert (ring-ref ring index) comint-input-ring-separator))
914 (write-region (buffer-string) nil file nil 'no-message)
915 (kill-buffer nil))))))
918 (defvar comint-dynamic-list-input-ring-window-conf)
920 (defun comint-dynamic-list-input-ring-select ()
921 "Choose the input history entry that point is in or next to."
922 (interactive)
923 (let (beg end completion (buffer completion-reference-buffer)
924 (base-size completion-base-size))
925 (if (and (not (eobp)) (get-text-property (point) 'mouse-face))
926 (setq end (point) beg (1+ (point))))
927 (if (and (not (bobp)) (get-text-property (1- (point)) 'mouse-face))
928 (setq end (1- (point)) beg (point)))
929 (if (null beg)
930 (error "No history entry here"))
931 (setq beg (previous-single-property-change beg 'mouse-face))
932 (setq end (or (next-single-property-change end 'mouse-face) (point-max)))
933 (setq completion (buffer-substring beg end))
934 (set-window-configuration comint-dynamic-list-input-ring-window-conf)
935 (choose-completion-string completion buffer base-size)))
937 (defun comint-dynamic-list-input-ring ()
938 "List in help buffer the buffer's input history."
939 (interactive)
940 (if (or (not (ring-p comint-input-ring))
941 (ring-empty-p comint-input-ring))
942 (message "No history")
943 (let ((history nil)
944 (history-buffer " *Input History*")
945 (index (1- (ring-length comint-input-ring)))
946 (conf (current-window-configuration)))
947 ;; We have to build up a list ourselves from the ring vector.
948 (while (>= index 0)
949 (setq history (cons (ring-ref comint-input-ring index) history)
950 index (1- index)))
951 ;; Change "completion" to "history reference"
952 ;; to make the display accurate.
953 (with-output-to-temp-buffer history-buffer
954 (display-completion-list history)
955 (set-buffer history-buffer)
956 (let ((keymap (make-sparse-keymap)))
957 (set-keymap-parent keymap (current-local-map))
958 (define-key keymap "\C-m" 'comint-dynamic-list-input-ring-select)
959 (use-local-map keymap))
960 (forward-line 3)
961 (while (search-backward "completion" nil 'move)
962 (replace-match "history reference")))
963 (sit-for 0)
964 (message "Hit space to flush")
965 (setq comint-dynamic-list-input-ring-window-conf conf)
966 (let ((ch (read-event)))
967 (if (eq ch ?\ )
968 (set-window-configuration conf)
969 (setq unread-command-events (list ch)))))))
972 (defun comint-regexp-arg (prompt)
973 ;; Return list of regexp and prefix arg using PROMPT.
974 (let* (;; Don't clobber this.
975 (last-command last-command)
976 (regexp (read-from-minibuffer prompt nil nil nil
977 'minibuffer-history-search-history)))
978 (list (if (string-equal regexp "")
979 (setcar minibuffer-history-search-history
980 (nth 1 minibuffer-history-search-history))
981 regexp)
982 (prefix-numeric-value current-prefix-arg))))
984 (defun comint-search-arg (arg)
985 ;; First make sure there is a ring and that we are after the process mark
986 (cond ((not (comint-after-pmark-p))
987 (error "Not at command line"))
988 ((or (null comint-input-ring)
989 (ring-empty-p comint-input-ring))
990 (error "Empty input ring"))
991 ((zerop arg)
992 ;; arg of zero resets search from beginning, and uses arg of 1
993 (setq comint-input-ring-index nil)
996 arg)))
998 (defun comint-search-start (arg)
999 ;; Index to start a directional search, starting at comint-input-ring-index
1000 (if comint-input-ring-index
1001 ;; If a search is running, offset by 1 in direction of arg
1002 (mod (+ comint-input-ring-index (if (> arg 0) 1 -1))
1003 (ring-length comint-input-ring))
1004 ;; For a new search, start from beginning or end, as appropriate
1005 (if (>= arg 0)
1006 0 ; First elt for forward search
1007 (1- (ring-length comint-input-ring))))) ; Last elt for backward search
1009 (defun comint-previous-input-string (arg)
1010 "Return the string ARG places along the input ring.
1011 Moves relative to `comint-input-ring-index'."
1012 (ring-ref comint-input-ring (if comint-input-ring-index
1013 (mod (+ arg comint-input-ring-index)
1014 (ring-length comint-input-ring))
1015 arg)))
1017 (defun comint-previous-input (arg)
1018 "Cycle backwards through input history."
1019 (interactive "*p")
1020 (comint-previous-matching-input "." arg))
1022 (defun comint-next-input (arg)
1023 "Cycle forwards through input history."
1024 (interactive "*p")
1025 (comint-previous-input (- arg)))
1027 (defun comint-previous-matching-input-string (regexp arg)
1028 "Return the string matching REGEXP ARG places along the input ring.
1029 Moves relative to `comint-input-ring-index'."
1030 (let* ((pos (comint-previous-matching-input-string-position regexp arg)))
1031 (if pos (ring-ref comint-input-ring pos))))
1033 (defun comint-previous-matching-input-string-position (regexp arg &optional start)
1034 "Return the index matching REGEXP ARG places along the input ring.
1035 Moves relative to START, or `comint-input-ring-index'."
1036 (if (or (not (ring-p comint-input-ring))
1037 (ring-empty-p comint-input-ring))
1038 (error "No history"))
1039 (let* ((len (ring-length comint-input-ring))
1040 (motion (if (> arg 0) 1 -1))
1041 (n (mod (- (or start (comint-search-start arg)) motion) len))
1042 (tried-each-ring-item nil)
1043 (prev nil))
1044 ;; Do the whole search as many times as the argument says.
1045 (while (and (/= arg 0) (not tried-each-ring-item))
1046 ;; Step once.
1047 (setq prev n
1048 n (mod (+ n motion) len))
1049 ;; If we haven't reached a match, step some more.
1050 (while (and (< n len) (not tried-each-ring-item)
1051 (not (string-match regexp (ring-ref comint-input-ring n))))
1052 (setq n (mod (+ n motion) len)
1053 ;; If we have gone all the way around in this search.
1054 tried-each-ring-item (= n prev)))
1055 (setq arg (if (> arg 0) (1- arg) (1+ arg))))
1056 ;; Now that we know which ring element to use, if we found it, return that.
1057 (if (string-match regexp (ring-ref comint-input-ring n))
1058 n)))
1060 (defun comint-previous-matching-input (regexp arg)
1061 "Search backwards through input history for match for REGEXP.
1062 \(Previous history elements are earlier commands.)
1063 With prefix argument N, search for Nth previous match.
1064 If N is negative, find the next or Nth next match."
1065 (interactive (comint-regexp-arg "Previous input matching (regexp): "))
1066 (setq arg (comint-search-arg arg))
1067 (let ((pos (comint-previous-matching-input-string-position regexp arg)))
1068 ;; Has a match been found?
1069 (if (null pos)
1070 (error "Not found")
1071 (setq comint-input-ring-index pos)
1072 (message "History item: %d" (1+ pos))
1073 (delete-region
1074 ;; Can't use kill-region as it sets this-command
1075 (or (marker-position comint-accum-marker)
1076 (process-mark (get-buffer-process (current-buffer))))
1077 (point))
1078 (insert (ring-ref comint-input-ring pos)))))
1080 (defun comint-next-matching-input (regexp arg)
1081 "Search forwards through input history for match for REGEXP.
1082 \(Later history elements are more recent commands.)
1083 With prefix argument N, search for Nth following match.
1084 If N is negative, find the previous or Nth previous match."
1085 (interactive (comint-regexp-arg "Next input matching (regexp): "))
1086 (comint-previous-matching-input regexp (- arg)))
1088 (defun comint-previous-matching-input-from-input (arg)
1089 "Search backwards through input history for match for current input.
1090 \(Previous history elements are earlier commands.)
1091 With prefix argument N, search for Nth previous match.
1092 If N is negative, search forwards for the -Nth following match."
1093 (interactive "p")
1094 (if (not (memq last-command '(comint-previous-matching-input-from-input
1095 comint-next-matching-input-from-input)))
1096 ;; Starting a new search
1097 (setq comint-matching-input-from-input-string
1098 (buffer-substring
1099 (or (marker-position comint-accum-marker)
1100 (process-mark (get-buffer-process (current-buffer))))
1101 (point))
1102 comint-input-ring-index nil))
1103 (comint-previous-matching-input
1104 (concat "^" (regexp-quote comint-matching-input-from-input-string))
1105 arg))
1107 (defun comint-next-matching-input-from-input (arg)
1108 "Search forwards through input history for match for current input.
1109 \(Following history elements are more recent commands.)
1110 With prefix argument N, search for Nth following match.
1111 If N is negative, search backwards for the -Nth previous match."
1112 (interactive "p")
1113 (comint-previous-matching-input-from-input (- arg)))
1116 (defun comint-replace-by-expanded-history (&optional silent start)
1117 "Expand input command history references before point.
1118 Expansion is dependent on the value of `comint-input-autoexpand'.
1120 This function depends on the buffer's idea of the input history, which may not
1121 match the command interpreter's idea, assuming it has one.
1123 Assumes history syntax is like typical Un*x shells'. However, since emacs
1124 cannot know the interpreter's idea of input line numbers, assuming it has one,
1125 it cannot expand absolute input line number references.
1127 If the optional argument SILENT is non-nil, never complain
1128 even if history reference seems erroneous.
1130 If the optional argument START is non-nil, that specifies the
1131 start of the text to scan for history references, rather
1132 than the logical beginning of line.
1134 See `comint-magic-space' and `comint-replace-by-expanded-history-before-point'.
1136 Returns t if successful."
1137 (interactive)
1138 (if (and comint-input-autoexpand
1139 (if comint-use-prompt-regexp-instead-of-fields
1140 ;; Use comint-prompt-regexp
1141 (save-excursion
1142 (beginning-of-line)
1143 (looking-at (concat comint-prompt-regexp "!\\|\\^")))
1144 ;; Use input fields. User input that hasn't been entered
1145 ;; yet, at the end of the buffer, has a nil `field' property.
1146 (and (null (get-char-property (point) 'field))
1147 (string-match "!\\|^\\^" (field-string)))))
1148 ;; Looks like there might be history references in the command.
1149 (let ((previous-modified-tick (buffer-modified-tick)))
1150 (comint-replace-by-expanded-history-before-point silent start)
1151 (/= previous-modified-tick (buffer-modified-tick)))))
1154 (defun comint-replace-by-expanded-history-before-point (silent &optional start)
1155 "Expand directory stack reference before point.
1156 See `comint-replace-by-expanded-history'. Returns t if successful.
1158 If the optional argument START is non-nil, that specifies the
1159 start of the text to scan for history references, rather
1160 than the logical beginning of line."
1161 (save-excursion
1162 (let ((toend (- (line-end-position) (point)))
1163 (start (comint-line-beginning-position)))
1164 (goto-char start)
1165 (while (progn
1166 (skip-chars-forward "^!^" (- (line-end-position) toend))
1167 (< (point) (- (line-end-position) toend)))
1168 ;; This seems a bit complex. We look for references such as !!, !-num,
1169 ;; !foo, !?foo, !{bar}, !?{bar}, ^oh, ^my^, ^god^it, ^never^ends^.
1170 ;; If that wasn't enough, the plings can be suffixed with argument
1171 ;; range specifiers.
1172 ;; Argument ranges are complex too, so we hive off the input line,
1173 ;; referenced with plings, with the range string to `comint-args'.
1174 (setq comint-input-ring-index nil)
1175 (cond ((or (= (preceding-char) ?\\)
1176 (comint-within-quotes start (point)))
1177 ;; The history is quoted, or we're in quotes.
1178 (goto-char (1+ (point))))
1179 ((looking-at "![0-9]+\\($\\|[^-]\\)")
1180 ;; We cannot know the interpreter's idea of input line numbers.
1181 (goto-char (match-end 0))
1182 (message "Absolute reference cannot be expanded"))
1183 ((looking-at "!-\\([0-9]+\\)\\(:?[0-9^$*-]+\\)?")
1184 ;; Just a number of args from `number' lines backward.
1185 (let ((number (1- (string-to-number
1186 (buffer-substring (match-beginning 1)
1187 (match-end 1))))))
1188 (if (<= number (ring-length comint-input-ring))
1189 (progn
1190 (replace-match
1191 (comint-args (comint-previous-input-string number)
1192 (match-beginning 2) (match-end 2))
1193 t t)
1194 (setq comint-input-ring-index number)
1195 (message "History item: %d" (1+ number)))
1196 (goto-char (match-end 0))
1197 (message "Relative reference exceeds input history size"))))
1198 ((or (looking-at "!!?:?\\([0-9^$*-]+\\)") (looking-at "!!"))
1199 ;; Just a number of args from the previous input line.
1200 (replace-match
1201 (comint-args (comint-previous-input-string 0)
1202 (match-beginning 1) (match-end 1))
1203 t t)
1204 (message "History item: previous"))
1205 ((looking-at
1206 "!\\??\\({\\(.+\\)}\\|\\(\\sw+\\)\\)\\(:?[0-9^$*-]+\\)?")
1207 ;; Most recent input starting with or containing (possibly
1208 ;; protected) string, maybe just a number of args. Phew.
1209 (let* ((mb1 (match-beginning 1)) (me1 (match-end 1))
1210 (mb2 (match-beginning 2)) (me2 (match-end 2))
1211 (exp (buffer-substring (or mb2 mb1) (or me2 me1)))
1212 (pref (if (save-match-data (looking-at "!\\?")) "" "^"))
1213 (pos (save-match-data
1214 (comint-previous-matching-input-string-position
1215 (concat pref (regexp-quote exp)) 1))))
1216 (if (null pos)
1217 (progn
1218 (goto-char (match-end 0))
1219 (or silent
1220 (progn (message "Not found")
1221 (ding))))
1222 (setq comint-input-ring-index pos)
1223 (replace-match
1224 (comint-args (ring-ref comint-input-ring pos)
1225 (match-beginning 4) (match-end 4))
1226 t t)
1227 (message "History item: %d" (1+ pos)))))
1228 ((looking-at "\\^\\([^^]+\\)\\^?\\([^^]*\\)\\^?")
1229 ;; Quick substitution on the previous input line.
1230 (let ((old (buffer-substring (match-beginning 1) (match-end 1)))
1231 (new (buffer-substring (match-beginning 2) (match-end 2)))
1232 (pos nil))
1233 (replace-match (comint-previous-input-string 0) t t)
1234 (setq pos (point))
1235 (goto-char (match-beginning 0))
1236 (if (not (search-forward old pos t))
1237 (or silent
1238 (error "Not found"))
1239 (replace-match new t t)
1240 (message "History item: substituted"))))
1242 (forward-char 1)))))))
1245 (defun comint-magic-space (arg)
1246 "Expand input history references before point and insert ARG spaces.
1247 A useful command to bind to SPC. See `comint-replace-by-expanded-history'."
1248 (interactive "p")
1249 (comint-replace-by-expanded-history)
1250 (self-insert-command arg))
1252 (defun comint-within-quotes (beg end)
1253 "Return t if the number of quotes between BEG and END is odd.
1254 Quotes are single and double."
1255 (let ((countsq (comint-how-many-region "\\(^\\|[^\\\\]\\)\'" beg end))
1256 (countdq (comint-how-many-region "\\(^\\|[^\\\\]\\)\"" beg end)))
1257 (or (= (mod countsq 2) 1) (= (mod countdq 2) 1))))
1259 (defun comint-how-many-region (regexp beg end)
1260 "Return number of matches for REGEXP from BEG to END."
1261 (let ((count 0))
1262 (save-excursion
1263 (save-match-data
1264 (goto-char beg)
1265 (while (re-search-forward regexp end t)
1266 (setq count (1+ count)))))
1267 count))
1269 (defun comint-args (string begin end)
1270 ;; From STRING, return the args depending on the range specified in the text
1271 ;; from BEGIN to END. If BEGIN is nil, assume all args. Ignore leading `:'.
1272 ;; Range can be x-y, x-, -y, where x/y can be [0-9], *, ^, $.
1273 (save-match-data
1274 (if (null begin)
1275 (comint-arguments string 0 nil)
1276 (let* ((range (buffer-substring
1277 (if (eq (char-after begin) ?:) (1+ begin) begin) end))
1278 (nth (cond ((string-match "^[*^]" range) 1)
1279 ((string-match "^-" range) 0)
1280 ((string-equal range "$") nil)
1281 (t (string-to-number range))))
1282 (mth (cond ((string-match "[-*$]$" range) nil)
1283 ((string-match "-" range)
1284 (string-to-number (substring range (match-end 0))))
1285 (t nth))))
1286 (comint-arguments string nth mth)))))
1288 ;; Return a list of arguments from ARG. Break it up at the
1289 ;; delimiters in comint-delimiter-argument-list. Returned list is backwards.
1290 (defun comint-delim-arg (arg)
1291 (if (null comint-delimiter-argument-list)
1292 (list arg)
1293 (let ((args nil)
1294 (pos 0)
1295 (len (length arg)))
1296 (while (< pos len)
1297 (let ((char (aref arg pos))
1298 (start pos))
1299 (if (memq char comint-delimiter-argument-list)
1300 (while (and (< pos len) (eq (aref arg pos) char))
1301 (setq pos (1+ pos)))
1302 (while (and (< pos len)
1303 (not (memq (aref arg pos)
1304 comint-delimiter-argument-list)))
1305 (setq pos (1+ pos))))
1306 (setq args (cons (substring arg start pos) args))))
1307 args)))
1309 (defun comint-arguments (string nth mth)
1310 "Return from STRING the NTH to MTH arguments.
1311 NTH and/or MTH can be nil, which means the last argument.
1312 Returned arguments are separated by single spaces.
1313 We assume whitespace separates arguments, except within quotes
1314 and except for a space or tab that immediately follows a backslash.
1315 Also, a run of one or more of a single character
1316 in `comint-delimiter-argument-list' is a separate argument.
1317 Argument 0 is the command name."
1318 ;; The first line handles ordinary characters and backslash-sequences
1319 ;; (except with w32 msdos-like shells, where backslashes are valid).
1320 ;; The second matches "-quoted strings.
1321 ;; The third matches '-quoted strings.
1322 ;; The fourth matches `-quoted strings.
1323 ;; This seems to fit the syntax of BASH 2.0.
1324 (let* ((first (if (and (eq system-type 'windows-nt)
1325 (w32-shell-dos-semantics))
1326 "[^ \n\t\"'`]+\\|"
1327 "[^ \n\t\"'`\\]+\\|\\\\[\"'`\\ \t]+\\|"))
1328 (argpart (concat first
1329 "\\(\"\\([^\"\\]\\|\\\\.\\)*\"\\|\
1330 '[^']*'\\|\
1331 `[^`]*`\\)"))
1332 (args ()) (pos 0)
1333 (count 0)
1334 beg str value quotes)
1335 ;; Build a list of all the args until we have as many as we want.
1336 (while (and (or (null mth) (<= count mth))
1337 (string-match argpart string pos))
1338 (if (and beg (= pos (match-beginning 0)))
1339 ;; It's contiguous, part of the same arg.
1340 (setq pos (match-end 0)
1341 quotes (or quotes (match-beginning 1)))
1342 ;; It's a new separate arg.
1343 (if beg
1344 ;; Put the previous arg, if there was one, onto ARGS.
1345 (setq str (substring string beg pos)
1346 args (if quotes (cons str args)
1347 (nconc (comint-delim-arg str) args))
1348 count (1+ count)))
1349 (setq quotes (match-beginning 1))
1350 (setq beg (match-beginning 0))
1351 (setq pos (match-end 0))))
1352 (if beg
1353 (setq str (substring string beg pos)
1354 args (if quotes (cons str args)
1355 (nconc (comint-delim-arg str) args))
1356 count (1+ count)))
1357 (let ((n (or nth (1- count)))
1358 (m (if mth (1- (- count mth)) 0)))
1359 (mapconcat
1360 (function (lambda (a) a)) (nthcdr n (nreverse (nthcdr m args))) " "))))
1363 ;; Input processing stuff
1365 (defun comint-add-to-input-history (cmd)
1366 "Add CMD to the input history.
1367 Ignore duplicates if `comint-input-ignoredups' is non-nil."
1368 (if (and (funcall comint-input-filter cmd)
1369 (or (null comint-input-ignoredups)
1370 (not (ring-p comint-input-ring))
1371 (ring-empty-p comint-input-ring)
1372 (not (string-equal (ring-ref comint-input-ring 0)
1373 cmd))))
1374 (ring-insert comint-input-ring cmd)))
1376 (defun comint-send-input (&optional no-newline)
1377 "Send input to process.
1378 After the process output mark, sends all text from the process mark to
1379 point as input to the process. Before the process output mark, calls
1380 value of variable `comint-get-old-input' to retrieve old input, copies
1381 it to the process mark, and sends it. A terminal newline is also
1382 inserted into the buffer and sent to the process.
1384 Any history reference may be expanded depending on the value of the variable
1385 `comint-input-autoexpand'. The list of function names contained in the value
1386 of `comint-input-filter-functions' is called on the input before sending it.
1387 The input is entered into the input history ring, if the value of variable
1388 `comint-input-filter' returns non-nil when called on the input.
1390 If variable `comint-eol-on-send' is non-nil, then point is moved to the
1391 end of line before sending the input.
1393 After the input has been sent, if `comint-process-echoes' is non-nil,
1394 then comint-send-input waits to see if the process outputs a string
1395 matching the input, and if so, deletes that part of the output.
1397 The values of `comint-get-old-input', `comint-input-filter-functions', and
1398 `comint-input-filter' are chosen according to the command interpreter running
1399 in the buffer. E.g.,
1401 If the interpreter is the csh,
1402 comint-get-old-input is the default:
1403 If `comint-use-prompt-regexp-instead-of-fields' is nil, then
1404 either return the current input field, if point is on an input
1405 field, or the current line, if point is on an output field.
1406 If `comint-use-prompt-regexp-instead-of-fields' is non-nil, then
1407 return the current line with any initial string matching the
1408 regexp `comint-prompt-regexp' removed.
1409 comint-input-filter-functions monitors input for \"cd\", \"pushd\", and
1410 \"popd\" commands. When it sees one, it cd's the buffer.
1411 comint-input-filter is the default: returns t if the input isn't all white
1412 space.
1414 If the comint is Lucid Common Lisp,
1415 comint-get-old-input snarfs the sexp ending at point.
1416 comint-input-filter-functions does nothing.
1417 comint-input-filter returns nil if the input matches input-filter-regexp,
1418 which matches (1) all whitespace (2) :a, :c, etc.
1420 Similarly for Soar, Scheme, etc."
1421 (interactive)
1422 ;; Note that the input string does not include its terminal newline.
1423 (let ((proc (get-buffer-process (current-buffer))))
1424 (if (not proc) (error "Current buffer has no process")
1425 (let* ((pmark (process-mark proc))
1426 (intxt (if (>= (point) (marker-position pmark))
1427 (progn (if comint-eol-on-send (end-of-line))
1428 (buffer-substring pmark (point)))
1429 (let ((copy (funcall comint-get-old-input)))
1430 (goto-char pmark)
1431 (insert copy)
1432 copy)))
1433 (input (if (not (eq comint-input-autoexpand 'input))
1434 ;; Just whatever's already there
1435 intxt
1436 ;; Expand and leave it visible in buffer
1437 (comint-replace-by-expanded-history t pmark)
1438 (buffer-substring pmark (point))))
1439 (history (if (not (eq comint-input-autoexpand 'history))
1440 input
1441 ;; This is messy 'cos ultimately the original
1442 ;; functions used do insertion, rather than return
1443 ;; strings. We have to expand, then insert back.
1444 (comint-replace-by-expanded-history t pmark)
1445 (let ((copy (buffer-substring pmark (point)))
1446 (start (point)))
1447 (insert input)
1448 (delete-region pmark start)
1449 copy))))
1451 (unless no-newline
1452 (insert ?\n))
1454 (comint-add-to-input-history history)
1456 (run-hook-with-args 'comint-input-filter-functions
1457 (if no-newline input
1458 (concat input "\n")))
1460 (let ((beg (marker-position pmark))
1461 (end (if no-newline (point) (1- (point)))))
1462 (when (> end beg)
1463 ;; Set text-properties for the input field
1464 (add-text-properties
1465 beg end
1466 '(front-sticky t
1467 font-lock-face comint-highlight-input
1468 mouse-face highlight
1469 help-echo "mouse-2: insert after prompt as new input"))
1470 (unless comint-use-prompt-regexp-instead-of-fields
1471 ;; Give old user input a field property of `input', to
1472 ;; distinguish it from both process output and unsent
1473 ;; input. The terminating newline is put into a special
1474 ;; `boundary' field to make cursor movement between input
1475 ;; and output fields smoother.
1476 (put-text-property beg end 'field 'input)))
1477 (unless (or no-newline comint-use-prompt-regexp-instead-of-fields)
1478 ;; Cover the terminating newline
1479 (add-text-properties end (1+ end)
1480 '(rear-nonsticky t
1481 field boundary
1482 inhibit-line-move-field-capture t))))
1484 (comint-snapshot-last-prompt)
1486 (setq comint-save-input-ring-index comint-input-ring-index)
1487 (setq comint-input-ring-index nil)
1488 ;; Update the markers before we send the input
1489 ;; in case we get output amidst sending the input.
1490 (set-marker comint-last-input-start pmark)
1491 (set-marker comint-last-input-end (point))
1492 (set-marker (process-mark proc) (point))
1493 ;; clear the "accumulation" marker
1494 (set-marker comint-accum-marker nil)
1495 (let ((comint-input-sender-no-newline no-newline))
1496 (funcall comint-input-sender proc input))
1498 ;; Optionally delete echoed input (after checking it).
1499 (when comint-process-echoes
1500 (let ((echo-len (- comint-last-input-end
1501 comint-last-input-start)))
1502 ;; Wait for all input to be echoed:
1503 (while (and (accept-process-output proc)
1504 (> (+ comint-last-input-end echo-len)
1505 (point-max))
1506 (zerop
1507 (compare-buffer-substrings
1508 nil comint-last-input-start
1509 (- (point-max) echo-len)
1510 ;; Above difference is equivalent to
1511 ;; (+ comint-last-input-start
1512 ;; (- (point-max) comint-last-input-end))
1513 nil comint-last-input-end (point-max)))))
1514 (if (and
1515 (<= (+ comint-last-input-end echo-len)
1516 (point-max))
1517 (zerop
1518 (compare-buffer-substrings
1519 nil comint-last-input-start comint-last-input-end
1520 nil comint-last-input-end
1521 (+ comint-last-input-end echo-len))))
1522 (delete-region comint-last-input-end
1523 (+ comint-last-input-end echo-len)))))
1525 ;; This used to call comint-output-filter-functions,
1526 ;; but that scrolled the buffer in undesirable ways.
1527 (run-hook-with-args 'comint-output-filter-functions "")))))
1529 (defvar comint-preoutput-filter-functions nil
1530 "List of functions to call before inserting Comint output into the buffer.
1531 Each function gets one argument, a string containing the text received
1532 from the subprocess. It should return the string to insert, perhaps
1533 the same string that was received, or perhaps a modified or transformed
1534 string.
1536 The functions on the list are called sequentially, and each one is
1537 given the string returned by the previous one. The string returned by
1538 the last function is the text that is actually inserted in the
1539 redirection buffer.
1541 You can use `add-hook' to add functions to this list
1542 either globally or locally.")
1544 (defvar comint-inhibit-carriage-motion nil
1545 "If nil, comint will interpret `carriage control' characters in output.
1546 See `comint-carriage-motion' for details.")
1548 ;; When non-nil, this is an overlay over the last recognized prompt in
1549 ;; the buffer; it is used when highlighting the prompt.
1550 (defvar comint-last-prompt-overlay nil)
1552 ;; `snapshot' any current comint-last-prompt-overlay, freezing its
1553 ;; attributes in place, even when more input comes a long and moves the
1554 ;; prompt overlay.
1555 (defun comint-snapshot-last-prompt ()
1556 (when comint-last-prompt-overlay
1557 (let ((inhibit-read-only t))
1558 (add-text-properties (overlay-start comint-last-prompt-overlay)
1559 (overlay-end comint-last-prompt-overlay)
1560 (overlay-properties comint-last-prompt-overlay)))))
1562 (defun comint-carriage-motion (start end)
1563 "Interpret carriage control characters in the region from START to END.
1564 Translate carriage return/linefeed sequences to linefeeds.
1565 Make single carriage returns delete to the beginning of the line.
1566 Make backspaces delete the previous character."
1567 (save-excursion
1568 ;; First do a quick check to see if there are any applicable
1569 ;; characters, so we can avoid calling save-match-data and
1570 ;; save-restriction if not.
1571 (goto-char start)
1572 (when (< (skip-chars-forward "^\b\r" end) (- end start))
1573 (save-match-data
1574 (save-restriction
1575 (widen)
1576 (let ((inhibit-field-text-motion t)
1577 (inhibit-read-only t))
1578 ;; CR LF -> LF
1579 ;; Note that this won't work properly when the CR and LF
1580 ;; are in different output chunks, but this is probably an
1581 ;; exceedingly rare case (because they are generally
1582 ;; written as a unit), and to delay interpretation of a
1583 ;; trailing CR in a chunk would result in odd interactive
1584 ;; behavior (and this case is probably far more common).
1585 (while (re-search-forward "\r$" end t)
1586 (delete-char -1))
1587 ;; bare CR -> delete preceding line
1588 (goto-char start)
1589 (while (search-forward "\r" end t)
1590 (delete-region (point) (line-beginning-position)))
1591 ;; BS -> delete preceding character
1592 (goto-char start)
1593 (while (search-forward "\b" end t)
1594 (delete-char -2))))))))
1596 ;; The purpose of using this filter for comint processes
1597 ;; is to keep comint-last-input-end from moving forward
1598 ;; when output is inserted.
1599 (defun comint-output-filter (process string)
1600 (let ((oprocbuf (process-buffer process)))
1601 ;; First check for killed buffer or no input.
1602 (when (and string oprocbuf (buffer-name oprocbuf))
1603 (with-current-buffer oprocbuf
1604 ;; Run preoutput filters
1605 (let ((functions comint-preoutput-filter-functions))
1606 (while (and functions string)
1607 (if (eq (car functions) t)
1608 (let ((functions (default-value 'comint-preoutput-filter-functions)))
1609 (while (and functions string)
1610 (setq string (funcall (car functions) string))
1611 (setq functions (cdr functions))))
1612 (setq string (funcall (car functions) string)))
1613 (setq functions (cdr functions))))
1615 ;; Insert STRING
1616 (let ((inhibit-read-only t)
1617 ;; Avoid the overhead of save-excursion, since we just
1618 ;; fiddle with the point
1619 (saved-point (point-marker)))
1621 ;; The point should float after any insertion we do
1622 (set-marker-insertion-type saved-point t)
1624 ;; We temporarly remove any buffer narrowing, in case the
1625 ;; process mark is outside of the restriction
1626 (save-restriction
1627 (widen)
1629 (goto-char (process-mark process))
1630 (set-marker comint-last-output-start (point))
1632 ;; insert-before-markers is a bad thing. XXX
1634 ;; It is used here to force window-point markers (used to
1635 ;; store the value of point in non-selected windows) to
1636 ;; advance, but it also screws up any other markers that we
1637 ;; don't _want_ to advance, such as the start-marker of some
1638 ;; of the overlays we create.
1640 ;; We work around the problem with the overlays by
1641 ;; explicitly adjusting them after we do the insertion, but
1642 ;; in the future this problem should be solved correctly, by
1643 ;; using `insert', and making the insertion-type of
1644 ;; window-point markers settable (via a buffer-local
1645 ;; variable). In comint buffers, this variable would be set
1646 ;; to `t', to cause point in non-select windows to advance.
1647 (insert-before-markers string)
1648 ;; Fixup markers and overlays that got screwed up because we
1649 ;; used `insert-before-markers'.
1650 (let ((old-point (- (point) (length string))))
1651 ;; comint-last-output-start
1652 (set-marker comint-last-output-start old-point)
1653 ;; comint-last-input-end
1654 (when (and comint-last-input-end
1655 (equal (marker-position comint-last-input-end)
1656 (point)))
1657 (set-marker comint-last-input-end old-point))
1658 ;; No overlays we create are set to advance upon insertion
1659 ;; (at the start/end), so we assume that any overlay which
1660 ;; is at the current point was incorrectly advanced by
1661 ;; insert-before-markers. First fixup overlays that might
1662 ;; start at point:
1663 (dolist (over (overlays-at (point)))
1664 (when (= (overlay-start over) (point))
1665 (let ((end (overlay-end over)))
1666 (move-overlay over
1667 old-point
1668 (if (= end (point)) old-point end)))))
1669 ;; Then do overlays that might end at point:
1670 (dolist (over (overlays-at (1- (point))))
1671 (when (= (overlay-end over) (point))
1672 (move-overlay over
1673 (min (overlay-start over) old-point)
1674 old-point))))
1676 ;; Advance process-mark
1677 (set-marker (process-mark process) (point))
1679 (unless comint-inhibit-carriage-motion
1680 ;; Interpret any carriage motion characters (newline, backspace)
1681 (comint-carriage-motion comint-last-output-start (point)))
1683 (run-hook-with-args 'comint-output-filter-functions string)
1685 (goto-char (process-mark process)) ; in case a filter moved it
1687 (unless comint-use-prompt-regexp-instead-of-fields
1688 (let ((inhibit-read-only t))
1689 (add-text-properties comint-last-output-start (point)
1690 '(rear-nonsticky t
1691 field output
1692 inhibit-line-move-field-capture t))))
1694 ;; Highlight the prompt, where we define `prompt' to mean
1695 ;; the most recent output that doesn't end with a newline.
1696 (unless (and (bolp) (null comint-last-prompt-overlay))
1697 ;; Need to create or move the prompt overlay (in the case
1698 ;; where there is no prompt ((bolp) == t), we still do
1699 ;; this if there's already an existing overlay).
1700 (let ((prompt-start (save-excursion (forward-line 0) (point))))
1701 (if comint-last-prompt-overlay
1702 ;; Just move an existing overlay
1703 (move-overlay comint-last-prompt-overlay
1704 prompt-start (point))
1705 ;; Need to create the overlay
1706 (setq comint-last-prompt-overlay
1707 (make-overlay prompt-start (point)))
1708 (overlay-put comint-last-prompt-overlay
1709 'font-lock-face 'comint-highlight-prompt))))
1711 (goto-char saved-point)))))))
1713 (defun comint-preinput-scroll-to-bottom ()
1714 "Go to the end of buffer in all windows showing it.
1715 Movement occurs if point in the selected window is not after the process mark,
1716 and `this-command' is an insertion command. Insertion commands recognised
1717 are `self-insert-command', `comint-magic-space', `yank', and `hilit-yank'.
1718 Depends on the value of `comint-scroll-to-bottom-on-input'.
1720 This function should be a pre-command hook."
1721 (if (and comint-scroll-to-bottom-on-input
1722 (memq this-command '(self-insert-command comint-magic-space yank
1723 hilit-yank)))
1724 (let* ((selected (selected-window))
1725 (current (current-buffer))
1726 (process (get-buffer-process current))
1727 (scroll comint-scroll-to-bottom-on-input))
1728 (if (and process (< (point) (process-mark process)))
1729 (if (eq scroll 'this)
1730 (goto-char (point-max))
1731 (walk-windows
1732 (function (lambda (window)
1733 (if (and (eq (window-buffer window) current)
1734 (or (eq scroll t) (eq scroll 'all)))
1735 (progn
1736 (select-window window)
1737 (goto-char (point-max))
1738 (select-window selected)))))
1739 nil t))))))
1741 (defun comint-postoutput-scroll-to-bottom (string)
1742 "Go to the end of buffer in some or all windows showing it.
1743 Does not scroll if the current line is the last line in the buffer.
1744 Depends on the value of `comint-move-point-for-output' and
1745 `comint-scroll-show-maximum-output'.
1747 This function should be in the list `comint-output-filter-functions'."
1748 (let* ((selected (selected-window))
1749 (current (current-buffer))
1750 (process (get-buffer-process current))
1751 (scroll comint-move-point-for-output))
1752 (unwind-protect
1753 (if process
1754 (walk-windows
1755 (function (lambda (window)
1756 (if (eq (window-buffer window) current)
1757 (progn
1758 (select-window window)
1759 (if (and (< (point) (process-mark process))
1760 (or (eq scroll t) (eq scroll 'all)
1761 ;; Maybe user wants point to jump to end.
1762 (and (eq scroll 'this) (eq selected window))
1763 (and (eq scroll 'others) (not (eq selected window)))
1764 ;; If point was at the end, keep it at end.
1765 (and (marker-position comint-last-output-start)
1766 (>= (point) comint-last-output-start))))
1767 (goto-char (process-mark process)))
1768 ;; Optionally scroll so that the text
1769 ;; ends at the bottom of the window.
1770 (if (and comint-scroll-show-maximum-output
1771 (= (point) (point-max)))
1772 (save-excursion
1773 (goto-char (point-max))
1774 (recenter -1)))
1775 (select-window selected)))))
1776 nil t))
1777 (set-buffer current))))
1779 (defun comint-truncate-buffer (&optional string)
1780 "Truncate the buffer to `comint-buffer-maximum-size'.
1781 This function could be on `comint-output-filter-functions' or bound to a key."
1782 (interactive)
1783 (save-excursion
1784 (goto-char (process-mark (get-buffer-process (current-buffer))))
1785 (forward-line (- comint-buffer-maximum-size))
1786 (beginning-of-line)
1787 (let ((inhibit-read-only t))
1788 (delete-region (point-min) (point)))))
1790 (defun comint-strip-ctrl-m (&optional string)
1791 "Strip trailing `^M' characters from the current output group.
1792 This function could be on `comint-output-filter-functions' or bound to a key."
1793 (interactive)
1794 (let ((pmark (process-mark (get-buffer-process (current-buffer)))))
1795 (save-excursion
1796 (condition-case nil
1797 (goto-char
1798 (if (interactive-p) comint-last-input-end comint-last-output-start))
1799 (error nil))
1800 (while (re-search-forward "\r+$" pmark t)
1801 (replace-match "" t t)))))
1802 (defalias 'shell-strip-ctrl-m 'comint-strip-ctrl-m)
1804 (defun comint-show-maximum-output ()
1805 "Put the end of the buffer at the bottom of the window."
1806 (interactive)
1807 (goto-char (point-max))
1808 (recenter -1))
1810 (defun comint-get-old-input-default ()
1811 "Default for `comint-get-old-input'.
1812 If `comint-use-prompt-regexp-instead-of-fields' is nil, then either
1813 return the current input field, if point is on an input field, or the
1814 current line, if point is on an output field.
1815 If `comint-use-prompt-regexp-instead-of-fields' is non-nil, then return
1816 the current line with any initial string matching the regexp
1817 `comint-prompt-regexp' removed."
1818 (let ((bof (field-beginning)))
1819 (if (eq (get-char-property bof 'field) 'input)
1820 (field-string-no-properties bof)
1821 (comint-bol)
1822 (buffer-substring-no-properties (point) (line-end-position)))))
1824 (defun comint-copy-old-input ()
1825 "Insert after prompt old input at point as new input to be edited.
1826 Calls `comint-get-old-input' to get old input."
1827 (interactive)
1828 (let ((input (funcall comint-get-old-input))
1829 (process (get-buffer-process (current-buffer))))
1830 (if (not process)
1831 (error "Current buffer has no process")
1832 (goto-char (process-mark process))
1833 (insert input))))
1835 (defun comint-skip-prompt ()
1836 "Skip past the text matching regexp `comint-prompt-regexp'.
1837 If this takes us past the end of the current line, don't skip at all."
1838 (let ((eol (save-excursion (end-of-line) (point))))
1839 (if (and (looking-at comint-prompt-regexp)
1840 (<= (match-end 0) eol))
1841 (goto-char (match-end 0)))))
1843 (defun comint-after-pmark-p ()
1844 "Return t if point is after the process output marker."
1845 (let ((pmark (process-mark (get-buffer-process (current-buffer)))))
1846 (<= (marker-position pmark) (point))))
1848 (defun comint-simple-send (proc string)
1849 "Default function for sending to PROC input STRING.
1850 This just sends STRING plus a newline. To override this,
1851 set the hook `comint-input-sender'."
1852 (comint-send-string proc string)
1853 (if comint-input-sender-no-newline
1854 (if (not (string-equal string ""))
1855 (process-send-eof))
1856 (comint-send-string proc "\n")))
1858 (defun comint-line-beginning-position ()
1859 "Returns the buffer position of the beginning of the line, after any prompt.
1860 If `comint-use-prompt-regexp-instead-of-fields' is non-nil, then the
1861 prompt skip is done by skipping text matching the regular expression
1862 `comint-prompt-regexp', a buffer local variable."
1863 (if comint-use-prompt-regexp-instead-of-fields
1864 ;; Use comint-prompt-regexp
1865 (save-excursion
1866 (beginning-of-line)
1867 (comint-skip-prompt)
1868 (point))
1869 ;; Use input fields. Note that, unlike the behavior of
1870 ;; `line-beginning-position' inside a field, this function will
1871 ;; return the position of the end of a prompt, even if the point is
1872 ;; already inside the prompt. In order to do this, it assumes that
1873 ;; if there are two fields on a line, then the first one is the
1874 ;; prompt, and the second one is an input field, and is front-sticky
1875 ;; (as input fields should be).
1876 (constrain-to-field (line-beginning-position) (line-end-position))))
1878 (defun comint-bol (&optional arg)
1879 "Goes to the beginning of line, then skips past the prompt, if any.
1880 If prefix argument is given (\\[universal-argument]) the prompt is not skipped.
1881 If `comint-use-prompt-regexp-instead-of-fields' is non-nil, then the
1882 prompt skip is done by skipping text matching the regular expression
1883 `comint-prompt-regexp', a buffer local variable."
1884 (interactive "P")
1885 (if arg
1886 ;; Unlike `beginning-of-line', forward-line ignores field boundaries
1887 (forward-line 0)
1888 (goto-char (comint-line-beginning-position))))
1890 ;; These three functions are for entering text you don't want echoed or
1891 ;; saved -- typically passwords to ftp, telnet, or somesuch.
1892 ;; Just enter m-x send-invisible and type in your line, or add
1893 ;; `comint-watch-for-password-prompt' to `comint-output-filter-functions'.
1895 (defun comint-read-noecho (prompt &optional stars)
1896 "Read a single line of text from user without echoing, and return it.
1897 Prompt with argument PROMPT, a string. Optional argument STARS causes
1898 input to be echoed with '*' characters on the prompt line. Input ends with
1899 RET, LFD, or ESC. DEL or C-h rubs out. C-u kills line. C-g aborts (if
1900 `inhibit-quit' is set because e.g. this function was called from a process
1901 filter and C-g is pressed, this function returns nil rather than a string).
1903 Note that the keystrokes comprising the text can still be recovered
1904 \(temporarily) with \\[view-lossage]. Some people find this worrysome.
1905 Once the caller uses the password, it can erase the password
1906 by doing (clear-string STRING)."
1907 (let ((ans "")
1908 (newans nil)
1909 (c 0)
1910 (echo-keystrokes 0)
1911 (cursor-in-echo-area t)
1912 (message-log-max nil)
1913 (done nil))
1914 (while (not done)
1915 (if stars
1916 (message "%s%s" prompt (make-string (length ans) ?*))
1917 (message "%s" prompt))
1918 ;; Use this instead of `read-char' to avoid "Non-character input-event".
1919 (setq c (read-char-exclusive))
1920 (cond ((= c ?\C-g)
1921 ;; This function may get called from a process filter, where
1922 ;; inhibit-quit is set. In later versions of emacs read-char
1923 ;; may clear quit-flag itself and return C-g. That would make
1924 ;; it impossible to quit this loop in a simple way, so
1925 ;; re-enable it here (for backward-compatibility the check for
1926 ;; quit-flag below would still be necessary, so this seems
1927 ;; like the simplest way to do things).
1928 (setq quit-flag t
1929 done t))
1930 ((or (= c ?\r) (= c ?\n) (= c ?\e))
1931 (setq done t))
1932 ((= c ?\C-u)
1933 (clear-string ans)
1934 (setq ans ""))
1935 ((and (/= c ?\b) (/= c ?\177))
1936 (setq newans (concat ans (char-to-string c)))
1937 (clear-string ans)
1938 (setq ans newans))
1939 ((> (length ans) 0)
1940 (aset ans (1- (length ans)) 0)
1941 (setq ans (substring ans 0 -1)))))
1942 (if quit-flag
1943 ;; Emulate a true quit, except that we have to return a value.
1944 (prog1
1945 (setq quit-flag nil)
1946 (message "Quit")
1947 (beep t))
1948 (message "")
1949 ans)))
1951 (defun send-invisible (str)
1952 "Read a string without echoing.
1953 Then send it to the process running in the current buffer.
1954 The string is sent using `comint-input-sender'.
1955 Security bug: your string can still be temporarily recovered with
1956 \\[view-lossage]."
1957 (interactive "P") ; Defeat snooping via C-x ESC ESC
1958 (let ((proc (get-buffer-process (current-buffer))))
1959 (cond ((not proc)
1960 (error "Current buffer has no process"))
1961 ((stringp str)
1962 (comint-snapshot-last-prompt)
1963 (funcall comint-input-sender proc str))
1965 (let ((str (comint-read-noecho "Non-echoed text: " t)))
1966 (if (stringp str)
1967 (send-invisible str)
1968 (message "Warning: text will be echoed")))))))
1970 (defun comint-watch-for-password-prompt (string)
1971 "Prompt in the minibuffer for password and send without echoing.
1972 This function uses `send-invisible' to read and send a password to the buffer's
1973 process if STRING contains a password prompt defined by
1974 `comint-password-prompt-regexp'.
1976 This function could be in the list `comint-output-filter-functions'."
1977 (when (string-match comint-password-prompt-regexp string)
1978 (when (string-match "^[ \n\r\t\v\f\b\a]+" string)
1979 (setq string (replace-match "" t t string)))
1980 (let ((pw (comint-read-noecho string t)))
1981 (send-invisible pw))))
1983 ;; Low-level process communication
1985 (defun comint-send-string (process string)
1986 "Like `process-send-string', but also does extra bookkeeping for comint mode."
1987 (if process
1988 (with-current-buffer (if (processp process)
1989 (process-buffer process)
1990 (get-buffer process))
1991 (comint-snapshot-last-prompt))
1992 (comint-snapshot-last-prompt))
1993 (process-send-string process string))
1995 (defun comint-send-region (process start end)
1996 "Like `process-send-region', but also does extra bookkeeping for comint mode."
1997 (if process
1998 (with-current-buffer (if (processp process)
1999 (process-buffer process)
2000 (get-buffer process))
2001 (comint-snapshot-last-prompt))
2002 (comint-snapshot-last-prompt))
2003 (process-send-region process start end))
2006 ;; Random input hackage
2008 (defun comint-delete-output ()
2009 "Delete all output from interpreter since last input.
2010 Does not delete the prompt."
2011 (interactive)
2012 (let ((proc (get-buffer-process (current-buffer)))
2013 (replacement nil))
2014 (save-excursion
2015 (let ((pmark (progn (goto-char (process-mark proc))
2016 (forward-line 0)
2017 (point-marker))))
2018 (delete-region comint-last-input-end pmark)
2019 (goto-char (process-mark proc))
2020 (setq replacement (concat "*** output flushed ***\n"
2021 (buffer-substring pmark (point))))
2022 (delete-region pmark (point))))
2023 ;; Output message and put back prompt
2024 (comint-output-filter proc replacement)))
2025 (defalias 'comint-kill-output 'comint-delete-output)
2026 (make-obsolete 'comint-kill-output 'comint-delete-output "21.1")
2028 (defun comint-write-output (filename &optional append mustbenew)
2029 "Write output from interpreter since last input to FILENAME.
2030 Any prompt at the end of the output is not written.
2032 If the optional argument APPEND (the prefix argument when interactive)
2033 is non-nil, the output is appended to the file instead.
2035 If the optional argument MUSTBENEW is non-nil, check for an existing
2036 file with the same name. If MUSTBENEW is `excl', that means to get an
2037 error if the file already exists; never overwrite. If MUSTBENEW is
2038 neither nil nor `excl', that means ask for confirmation before
2039 overwriting, but do go ahead and overwrite the file if the user
2040 confirms. When interactive, MUSTBENEW is nil when appending, and t
2041 otherwise."
2042 (interactive
2043 (list (read-file-name
2044 (if current-prefix-arg
2045 "Append output to file: "
2046 "Write output to file: "))
2047 current-prefix-arg
2048 (not current-prefix-arg)))
2049 (save-excursion
2050 (goto-char (process-mark (get-buffer-process (current-buffer))))
2051 (forward-line 0)
2052 (write-region comint-last-input-end (point) filename
2053 append nil nil mustbenew)))
2055 ;; This function exists for the benefit of the menu; from the keyboard,
2056 ;; users can just use `comint-write-output' with a prefix arg.
2057 (defun comint-append-output-to-file (filename)
2058 "Append output from interpreter since last input to FILENAME.
2059 Any prompt at the end of the output is not written."
2060 (interactive "fAppend output to file: ")
2061 (comint-write-output filename t))
2063 (defun comint-show-output ()
2064 "Display start of this batch of interpreter output at top of window.
2065 Sets mark to the value of point when this command is run."
2066 (interactive)
2067 (push-mark)
2068 (let ((pos (or (marker-position comint-last-input-end) (point-max))))
2069 (cond (comint-use-prompt-regexp-instead-of-fields
2070 (goto-char pos)
2071 (beginning-of-line 0)
2072 (set-window-start (selected-window) (point))
2073 (comint-skip-prompt))
2075 (goto-char (field-beginning pos))
2076 (set-window-start (selected-window) (point))))))
2079 (defun comint-interrupt-subjob ()
2080 "Interrupt the current subjob.
2081 This command also kills the pending input
2082 between the process-mark and point."
2083 (interactive)
2084 (comint-skip-input)
2085 (interrupt-process nil comint-ptyp)
2086 ;; (process-send-string nil "\n")
2089 (defun comint-kill-subjob ()
2090 "Send kill signal to the current subjob.
2091 This command also kills the pending input
2092 between the process-mark and point."
2093 (interactive)
2094 (comint-skip-input)
2095 (kill-process nil comint-ptyp))
2097 (defun comint-quit-subjob ()
2098 "Send quit signal to the current subjob.
2099 This command also kills the pending input
2100 between the process-mark and point."
2101 (interactive)
2102 (comint-skip-input)
2103 (quit-process nil comint-ptyp))
2105 (defun comint-stop-subjob ()
2106 "Stop the current subjob.
2107 This command also kills the pending input
2108 between the process-mark and point.
2110 WARNING: if there is no current subjob, you can end up suspending
2111 the top-level process running in the buffer. If you accidentally do
2112 this, use \\[comint-continue-subjob] to resume the process. (This
2113 is not a problem with most shells, since they ignore this signal.)"
2114 (interactive)
2115 (comint-skip-input)
2116 (stop-process nil comint-ptyp))
2118 (defun comint-continue-subjob ()
2119 "Send CONT signal to process buffer's process group.
2120 Useful if you accidentally suspend the top-level process."
2121 (interactive)
2122 (continue-process nil comint-ptyp))
2124 (defun comint-skip-input ()
2125 "Skip all pending input, from last stuff output by interpreter to point.
2126 This means mark it as if it had been sent as input, without sending it."
2127 (let ((comint-input-sender 'ignore)
2128 (comint-input-filter-functions nil))
2129 (comint-send-input t))
2130 (end-of-line)
2131 (let ((pos (point))
2132 (marker (process-mark (get-buffer-process (current-buffer)))))
2133 (insert " " (key-description (this-command-keys)))
2134 (if (= marker pos)
2135 (set-marker marker (point)))))
2137 (defun comint-kill-input ()
2138 "Kill all text from last stuff output by interpreter to point."
2139 (interactive)
2140 (let ((pmark (process-mark (get-buffer-process (current-buffer)))))
2141 (if (> (point) (marker-position pmark))
2142 (kill-region pmark (point)))))
2144 (defun comint-delchar-or-maybe-eof (arg)
2145 "Delete ARG characters forward or send an EOF to subprocess.
2146 Sends an EOF only if point is at the end of the buffer and there is no input."
2147 (interactive "p")
2148 (let ((proc (get-buffer-process (current-buffer))))
2149 (if (and (eobp) proc (= (point) (marker-position (process-mark proc))))
2150 (comint-send-eof)
2151 (delete-char arg))))
2153 (defun comint-send-eof ()
2154 "Send an EOF to the current buffer's process."
2155 (interactive)
2156 (comint-send-input t)
2157 (process-send-eof))
2160 (defun comint-backward-matching-input (regexp arg)
2161 "Search backward through buffer for input fields that match REGEXP.
2162 If `comint-use-prompt-regexp-instead-of-fields' is non-nil, then input
2163 fields are identified by lines that match `comint-prompt-regexp'.
2165 With prefix argument N, search for Nth previous match.
2166 If N is negative, find the next or Nth next match."
2167 (interactive (comint-regexp-arg "Backward input matching (regexp): "))
2168 (if comint-use-prompt-regexp-instead-of-fields
2169 ;; Use comint-prompt-regexp
2170 (let* ((re (concat comint-prompt-regexp ".*" regexp))
2171 (pos (save-excursion (end-of-line (if (> arg 0) 0 1))
2172 (if (re-search-backward re nil t arg)
2173 (point)))))
2174 (if (null pos)
2175 (progn (message "Not found")
2176 (ding))
2177 (goto-char pos)
2178 (comint-bol nil)))
2179 ;; Use input fields
2180 (let* ((dir (if (< arg 0) -1 1))
2181 (pos
2182 (save-excursion
2183 (while (/= arg 0)
2184 (unless (re-search-backward regexp nil t dir)
2185 (error "Not found"))
2186 (when (eq (get-char-property (point) 'field) 'input)
2187 (setq arg (- arg dir))))
2188 (field-beginning))))
2189 (goto-char pos))))
2192 (defun comint-forward-matching-input (regexp arg)
2193 "Search forward through buffer for input fields that match REGEXP.
2194 If `comint-use-prompt-regexp-instead-of-fields' is non-nil, then input
2195 fields are identified by lines that match `comint-prompt-regexp'.
2197 With prefix argument N, search for Nth following match.
2198 If N is negative, find the previous or Nth previous match."
2199 (interactive (comint-regexp-arg "Forward input matching (regexp): "))
2200 (comint-backward-matching-input regexp (- arg)))
2203 (defun comint-next-prompt (n)
2204 "Move to end of Nth next prompt in the buffer.
2205 If `comint-use-prompt-regexp-instead-of-fields' is nil, then this means
2206 the beginning of the Nth next `input' field, otherwise, it means the Nth
2207 occurrence of text matching `comint-prompt-regexp'."
2208 (interactive "p")
2209 (if comint-use-prompt-regexp-instead-of-fields
2210 ;; Use comint-prompt-regexp
2211 (let ((paragraph-start comint-prompt-regexp))
2212 (end-of-line (if (> n 0) 1 0))
2213 (forward-paragraph n)
2214 (comint-skip-prompt))
2215 ;; Use input fields
2216 (let ((pos (point))
2217 (input-pos nil)
2218 prev-pos)
2219 (while (/= n 0)
2220 (setq prev-pos pos)
2221 (setq pos
2222 (if (> n 0)
2223 (next-single-char-property-change pos 'field)
2224 (previous-single-char-property-change pos 'field)))
2225 (cond ((or (null pos) (= pos prev-pos))
2226 ;; Ran off the end of the buffer.
2227 (when (> n 0)
2228 ;; There's always an input field at the end of the
2229 ;; buffer, but it has a `field' property of nil.
2230 (setq input-pos (point-max)))
2231 ;; stop iterating
2232 (setq n 0))
2233 ((eq (get-char-property pos 'field) 'input)
2234 (setq n (if (< n 0) (1+ n) (1- n)))
2235 (setq input-pos pos))))
2236 (when input-pos
2237 (goto-char input-pos)))))
2240 (defun comint-previous-prompt (n)
2241 "Move to end of Nth previous prompt in the buffer.
2242 If `comint-use-prompt-regexp-instead-of-fields' is nil, then this means
2243 the beginning of the Nth previous `input' field, otherwise, it means the Nth
2244 occurrence of text matching `comint-prompt-regexp'."
2245 (interactive "p")
2246 (comint-next-prompt (- n)))
2248 ;; State used by `comint-insert-previous-argument' when cycling.
2249 (defvar comint-insert-previous-argument-last-start-pos nil)
2250 (make-variable-buffer-local 'comint-insert-previous-argument-last-start-pos)
2251 (defvar comint-insert-previous-argument-last-index nil)
2252 (make-variable-buffer-local 'comint-insert-previous-argument-last-index)
2254 ;; Needs fixing:
2255 ;; make comint-arguments understand negative indices as bash does
2256 (defun comint-insert-previous-argument (index)
2257 "Insert the INDEXth argument from the previous comint command-line at point.
2258 Spaces are added at beginning and/or end of the inserted string if
2259 necessary to ensure that it's separated from adjacent arguments.
2260 Interactively, if no prefix argument is given, the last argument is inserted.
2261 Repeated interactive invocations will cycle through the same argument
2262 from progressively earlier commands (using the value of INDEX specified
2263 with the first command).
2264 This command is like `M-.' in bash."
2265 (interactive "P")
2266 (unless (null index)
2267 (setq index (prefix-numeric-value index)))
2268 (cond ((eq last-command this-command)
2269 ;; Delete last input inserted by this command.
2270 (delete-region comint-insert-previous-argument-last-start-pos (point))
2271 (setq index comint-insert-previous-argument-last-index))
2273 ;; This is a non-repeat invocation, so initialize state.
2274 (setq comint-input-ring-index nil)
2275 (setq comint-insert-previous-argument-last-index index)
2276 (when (null comint-insert-previous-argument-last-start-pos)
2277 ;; First usage; initialize to a marker
2278 (setq comint-insert-previous-argument-last-start-pos
2279 (make-marker)))))
2280 ;; Make sure we're not in the prompt, and add a beginning space if necess.
2281 (if (<= (point) (comint-line-beginning-position))
2282 (comint-bol)
2283 (just-one-space))
2284 ;; Remember the beginning of what we insert, so we can delete it if
2285 ;; the command is repeated.
2286 (set-marker comint-insert-previous-argument-last-start-pos (point))
2287 ;; Insert the argument.
2288 (let ((input-string (comint-previous-input-string 0)))
2289 (when (string-match "[ \t\n]*&" input-string)
2290 ;; strip terminating '&'
2291 (setq input-string (substring input-string 0 (match-beginning 0))))
2292 (insert (comint-arguments input-string index index)))
2293 ;; Make next invocation return arg from previous input
2294 (setq comint-input-ring-index (1+ (or comint-input-ring-index 0)))
2295 ;; Add a terminating space if necessary.
2296 (unless (eolp)
2297 (just-one-space)))
2300 ;; Support for source-file processing commands.
2301 ;;============================================================================
2302 ;; Many command-interpreters (e.g., Lisp, Scheme, Soar) have
2303 ;; commands that process files of source text (e.g. loading or compiling
2304 ;; files). So the corresponding process-in-a-buffer modes have commands
2305 ;; for doing this (e.g., lisp-load-file). The functions below are useful
2306 ;; for defining these commands.
2308 ;; Alas, these guys don't do exactly the right thing for Lisp, Scheme
2309 ;; and Soar, in that they don't know anything about file extensions.
2310 ;; So the compile/load interface gets the wrong default occasionally.
2311 ;; The load-file/compile-file default mechanism could be smarter -- it
2312 ;; doesn't know about the relationship between filename extensions and
2313 ;; whether the file is source or executable. If you compile foo.lisp
2314 ;; with compile-file, then the next load-file should use foo.bin for
2315 ;; the default, not foo.lisp. This is tricky to do right, particularly
2316 ;; because the extension for executable files varies so much (.o, .bin,
2317 ;; .lbin, .mo, .vo, .ao, ...).
2320 ;; COMINT-SOURCE-DEFAULT -- determines defaults for source-file processing
2321 ;; commands.
2323 ;; COMINT-CHECK-SOURCE -- if FNAME is in a modified buffer, asks you if you
2324 ;; want to save the buffer before issuing any process requests to the command
2325 ;; interpreter.
2327 ;; COMINT-GET-SOURCE -- used by the source-file processing commands to prompt
2328 ;; for the file to process.
2330 ;; (COMINT-SOURCE-DEFAULT previous-dir/file source-modes)
2331 ;;============================================================================
2332 ;; This function computes the defaults for the load-file and compile-file
2333 ;; commands for tea, soar, cmulisp, and cmuscheme modes.
2335 ;; - PREVIOUS-DIR/FILE is a pair (directory . filename) from the last
2336 ;; source-file processing command. nil if there hasn't been one yet.
2337 ;; - SOURCE-MODES is a list used to determine what buffers contain source
2338 ;; files: if the major mode of the buffer is in SOURCE-MODES, it's source.
2339 ;; Typically, (lisp-mode) or (scheme-mode).
2341 ;; If the command is given while the cursor is inside a string, *and*
2342 ;; the string is an existing filename, *and* the filename is not a directory,
2343 ;; then the string is taken as default. This allows you to just position
2344 ;; your cursor over a string that's a filename and have it taken as default.
2346 ;; If the command is given in a file buffer whose major mode is in
2347 ;; SOURCE-MODES, then the filename is the default file, and the
2348 ;; file's directory is the default directory.
2350 ;; If the buffer isn't a source file buffer (e.g., it's the process buffer),
2351 ;; then the default directory & file are what was used in the last source-file
2352 ;; processing command (i.e., PREVIOUS-DIR/FILE). If this is the first time
2353 ;; the command has been run (PREVIOUS-DIR/FILE is nil), the default directory
2354 ;; is the cwd, with no default file. (\"no default file\" = nil)
2356 ;; SOURCE-REGEXP is typically going to be something like (tea-mode)
2357 ;; for T programs, (lisp-mode) for Lisp programs, (soar-mode lisp-mode)
2358 ;; for Soar programs, etc.
2360 ;; The function returns a pair: (default-directory . default-file).
2362 (defun comint-source-default (previous-dir/file source-modes)
2363 (cond ((and buffer-file-name (memq major-mode source-modes))
2364 (cons (file-name-directory buffer-file-name)
2365 (file-name-nondirectory buffer-file-name)))
2366 (previous-dir/file)
2368 (cons default-directory nil))))
2371 ;; (COMINT-CHECK-SOURCE fname)
2372 ;;============================================================================
2373 ;; Prior to loading or compiling (or otherwise processing) a file (in the CMU
2374 ;; process-in-a-buffer modes), this function can be called on the filename.
2375 ;; If the file is loaded into a buffer, and the buffer is modified, the user
2376 ;; is queried to see if he wants to save the buffer before proceeding with
2377 ;; the load or compile.
2379 (defun comint-check-source (fname)
2380 (let ((buff (get-file-buffer fname)))
2381 (if (and buff
2382 (buffer-modified-p buff)
2383 (y-or-n-p (format "Save buffer %s first? " (buffer-name buff))))
2384 ;; save BUFF.
2385 (let ((old-buffer (current-buffer)))
2386 (set-buffer buff)
2387 (save-buffer)
2388 (set-buffer old-buffer)))))
2391 ;; (COMINT-GET-SOURCE prompt prev-dir/file source-modes mustmatch-p)
2392 ;;============================================================================
2393 ;; COMINT-GET-SOURCE is used to prompt for filenames in command-interpreter
2394 ;; commands that process source files (like loading or compiling a file).
2395 ;; It prompts for the filename, provides a default, if there is one,
2396 ;; and returns the result filename.
2398 ;; See COMINT-SOURCE-DEFAULT for more on determining defaults.
2400 ;; PROMPT is the prompt string. PREV-DIR/FILE is the (directory . file) pair
2401 ;; from the last source processing command. SOURCE-MODES is a list of major
2402 ;; modes used to determine what file buffers contain source files. (These
2403 ;; two arguments are used for determining defaults). If MUSTMATCH-P is true,
2404 ;; then the filename reader will only accept a file that exists.
2406 ;; A typical use:
2407 ;; (interactive (comint-get-source "Compile file: " prev-lisp-dir/file
2408 ;; '(lisp-mode) t))
2410 ;; This is pretty stupid about strings. It decides we're in a string
2411 ;; if there's a quote on both sides of point on the current line.
2412 (defun comint-extract-string ()
2413 "Return string around POINT that starts the current line, or nil."
2414 (save-excursion
2415 (let* ((point (point))
2416 (bol (progn (beginning-of-line) (point)))
2417 (eol (progn (end-of-line) (point)))
2418 (start (progn (goto-char point)
2419 (and (search-backward "\"" bol t)
2420 (1+ (point)))))
2421 (end (progn (goto-char point)
2422 (and (search-forward "\"" eol t)
2423 (1- (point))))))
2424 (and start end
2425 (buffer-substring-no-properties start end)))))
2427 (defun comint-get-source (prompt prev-dir/file source-modes mustmatch-p)
2428 (let* ((def (comint-source-default prev-dir/file source-modes))
2429 (stringfile (comint-extract-string))
2430 (sfile-p (and stringfile
2431 (condition-case ()
2432 (file-exists-p stringfile)
2433 (error nil))
2434 (not (file-directory-p stringfile))))
2435 (defdir (if sfile-p (file-name-directory stringfile)
2436 (car def)))
2437 (deffile (if sfile-p (file-name-nondirectory stringfile)
2438 (cdr def)))
2439 (ans (read-file-name (if deffile (format "%s(default %s) "
2440 prompt deffile)
2441 prompt)
2442 defdir
2443 (concat defdir deffile)
2444 mustmatch-p)))
2445 (list (expand-file-name (substitute-in-file-name ans)))))
2447 ;; I am somewhat divided on this string-default feature. It seems
2448 ;; to violate the principle-of-least-astonishment, in that it makes
2449 ;; the default harder to predict, so you actually have to look and see
2450 ;; what the default really is before choosing it. This can trip you up.
2451 ;; On the other hand, it can be useful, I guess. I would appreciate feedback
2452 ;; on this.
2453 ;; -Olin
2456 ;; Simple process query facility.
2457 ;; ===========================================================================
2458 ;; This function is for commands that want to send a query to the process
2459 ;; and show the response to the user. For example, a command to get the
2460 ;; arglist for a Common Lisp function might send a "(arglist 'foo)" query
2461 ;; to an inferior Common Lisp process.
2463 ;; This simple facility just sends strings to the inferior process and pops
2464 ;; up a window for the process buffer so you can see what the process
2465 ;; responds with. We don't do anything fancy like try to intercept what the
2466 ;; process responds with and put it in a pop-up window or on the message
2467 ;; line. We just display the buffer. Low tech. Simple. Works good.
2469 ;; Send to the inferior process PROC the string STR. Pop-up but do not select
2470 ;; a window for the inferior process so that its response can be seen.
2471 (defun comint-proc-query (proc str)
2472 (let* ((proc-buf (process-buffer proc))
2473 (proc-mark (process-mark proc)))
2474 (display-buffer proc-buf)
2475 (set-buffer proc-buf) ; but it's not the selected *window*
2476 (let ((proc-win (get-buffer-window proc-buf))
2477 (proc-pt (marker-position proc-mark)))
2478 (comint-send-string proc str) ; send the query
2479 (accept-process-output proc) ; wait for some output
2480 ;; Try to position the proc window so you can see the answer.
2481 ;; This is bogus code. If you delete the (sit-for 0), it breaks.
2482 ;; I don't know why. Wizards invited to improve it.
2483 (unless (pos-visible-in-window-p proc-pt proc-win)
2484 (let ((opoint (window-point proc-win)))
2485 (set-window-point proc-win proc-mark)
2486 (sit-for 0)
2487 (if (not (pos-visible-in-window-p opoint proc-win))
2488 (push-mark opoint)
2489 (set-window-point proc-win opoint)))))))
2492 ;; Filename/command/history completion in a buffer
2493 ;; ===========================================================================
2494 ;; Useful completion functions, courtesy of the Ergo group.
2496 ;; Six commands:
2497 ;; comint-dynamic-complete Complete or expand command, filename,
2498 ;; history at point.
2499 ;; comint-dynamic-complete-filename Complete filename at point.
2500 ;; comint-dynamic-list-filename-completions List completions in help buffer.
2501 ;; comint-replace-by-expanded-filename Expand and complete filename at point;
2502 ;; replace with expanded/completed name.
2503 ;; comint-dynamic-simple-complete Complete stub given candidates.
2505 ;; These are not installed in the comint-mode keymap. But they are
2506 ;; available for people who want them. Shell-mode installs them:
2507 ;; (define-key shell-mode-map "\t" 'comint-dynamic-complete)
2508 ;; (define-key shell-mode-map "\M-?"
2509 ;; 'comint-dynamic-list-filename-completions)))
2511 ;; Commands like this are fine things to put in load hooks if you
2512 ;; want them present in specific modes.
2514 (defcustom comint-completion-autolist nil
2515 "*If non-nil, automatically list possibilities on partial completion.
2516 This mirrors the optional behavior of tcsh."
2517 :type 'boolean
2518 :group 'comint-completion)
2520 (defcustom comint-completion-addsuffix t
2521 "*If non-nil, add a `/' to completed directories, ` ' to file names.
2522 If a cons pair, it should be of the form (DIRSUFFIX . FILESUFFIX) where
2523 DIRSUFFIX and FILESUFFIX are strings added on unambiguous or exact completion.
2524 This mirrors the optional behavior of tcsh."
2525 :type '(choice (const :tag "None" nil)
2526 (const :tag "Add /" t)
2527 (cons :tag "Suffix pair"
2528 (string :tag "Directory suffix")
2529 (string :tag "File suffix")))
2530 :group 'comint-completion)
2532 (defcustom comint-completion-recexact nil
2533 "*If non-nil, use shortest completion if characters cannot be added.
2534 This mirrors the optional behavior of tcsh.
2536 A non-nil value is useful if `comint-completion-autolist' is non-nil too."
2537 :type 'boolean
2538 :group 'comint-completion)
2540 (defcustom comint-completion-fignore nil
2541 "*List of suffixes to be disregarded during file completion.
2542 This mirrors the optional behavior of bash and tcsh.
2544 Note that this applies to `comint-dynamic-complete-filename' only."
2545 :type '(repeat (string :tag "Suffix"))
2546 :group 'comint-completion)
2548 (defvar comint-file-name-prefix ""
2549 "Prefix prepended to absolute file names taken from process input.
2550 This is used by comint's and shell's completion functions, and by shell's
2551 directory tracking functions.")
2553 (defvar comint-file-name-chars
2554 (if (memq system-type '(ms-dos windows-nt cygwin))
2555 "~/A-Za-z0-9_^$!#%&{}@`'.,:()-"
2556 "~/A-Za-z0-9+@:_.$#%,={}-")
2557 "String of characters valid in a file name.
2558 Note that all non-ASCII characters are considered valid in a file name
2559 regardless of what this variable says.
2561 This is a good thing to set in mode hooks.")
2563 (defvar comint-file-name-quote-list nil
2564 "List of characters to quote with `\\' when in a file name.
2566 This is a good thing to set in mode hooks.")
2569 (defun comint-directory (directory)
2570 ;; Return expanded DIRECTORY, with `comint-file-name-prefix' if absolute.
2571 (expand-file-name (if (file-name-absolute-p directory)
2572 (concat comint-file-name-prefix directory)
2573 directory)))
2576 (defun comint-word (word-chars)
2577 "Return the word of WORD-CHARS at point, or nil if non is found.
2578 Word constituents are considered to be those in WORD-CHARS, which is like the
2579 inside of a \"[...]\" (see `skip-chars-forward'),
2580 plus all non-ASCII characters."
2581 (save-excursion
2582 (let ((non-word-chars (concat "[^\\\\" word-chars "]")) (here (point)))
2583 (while (and (re-search-backward non-word-chars nil 'move)
2584 ;;(memq (char-after (point)) shell-file-name-quote-list)
2585 (or (>= (following-char) 128)
2586 (eq (preceding-char) ?\\)))
2587 (backward-char 1))
2588 ;; Don't go forward over a word-char (this can happen if we're at bob).
2589 (when (or (not (bobp)) (looking-at non-word-chars))
2590 (forward-char 1))
2591 ;; Set match-data to match the entire string.
2592 (when (< (point) here)
2593 (set-match-data (list (point) here))
2594 (match-string 0)))))
2596 (defun comint-substitute-in-file-name (filename)
2597 "Return FILENAME with environment variables substituted.
2598 Supports additional environment variable syntax of the command
2599 interpreter (e.g., the percent notation of cmd.exe on NT)."
2600 (let ((name (substitute-in-file-name filename)))
2601 (if (memq system-type '(ms-dos windows-nt))
2602 (let (env-var-name
2603 env-var-val)
2604 (save-match-data
2605 (while (string-match "%\\([^\\\\/]*\\)%" name)
2606 (setq env-var-name
2607 (substring name (match-beginning 1) (match-end 1)))
2608 (setq env-var-val (if (getenv env-var-name)
2609 (getenv env-var-name)
2610 ""))
2611 (setq name (replace-match env-var-val t t name))))))
2612 name))
2614 (defun comint-match-partial-filename ()
2615 "Return the filename at point, or nil if non is found.
2616 Environment variables are substituted. See `comint-word'."
2617 (let ((filename (comint-word comint-file-name-chars)))
2618 (and filename (comint-substitute-in-file-name
2619 (comint-unquote-filename filename)))))
2622 (defun comint-quote-filename (filename)
2623 "Return FILENAME with magic characters quoted.
2624 Magic characters are those in `comint-file-name-quote-list'."
2625 (if (null comint-file-name-quote-list)
2626 filename
2627 (let ((regexp
2628 (format "\\(^\\|[^\\]\\)\\([%s]\\)"
2629 (mapconcat 'char-to-string comint-file-name-quote-list ""))))
2630 (save-match-data
2631 (while (string-match regexp filename)
2632 (setq filename (replace-match "\\1\\\\\\2" nil nil filename)))
2633 filename))))
2635 (defun comint-unquote-filename (filename)
2636 "Return FILENAME with quoted characters unquoted."
2637 (if (null comint-file-name-quote-list)
2638 filename
2639 (save-match-data
2640 (let ((i 0))
2641 (while (string-match "\\\\\\(.\\)" filename i)
2642 (setq filename (replace-match "\\1" nil nil filename))
2643 (setq i (+ 1 (match-beginning 0)))))
2644 filename)))
2647 (defun comint-dynamic-complete ()
2648 "Dynamically perform completion at point.
2649 Calls the functions in `comint-dynamic-complete-functions' to perform
2650 completion until a function returns non-nil, at which point completion is
2651 assumed to have occurred."
2652 (interactive)
2653 (run-hook-with-args-until-success 'comint-dynamic-complete-functions))
2656 (defun comint-dynamic-complete-filename ()
2657 "Dynamically complete the filename at point.
2658 Completes if after a filename. See `comint-match-partial-filename' and
2659 `comint-dynamic-complete-as-filename'.
2660 This function is similar to `comint-replace-by-expanded-filename', except that
2661 it won't change parts of the filename already entered in the buffer; it just
2662 adds completion characters to the end of the filename. A completions listing
2663 may be shown in a help buffer if completion is ambiguous.
2665 Completion is dependent on the value of `comint-completion-addsuffix',
2666 `comint-completion-recexact' and `comint-completion-fignore', and the timing of
2667 completions listing is dependent on the value of `comint-completion-autolist'.
2669 Returns t if successful."
2670 (interactive)
2671 (when (comint-match-partial-filename)
2672 (unless (window-minibuffer-p (selected-window))
2673 (message "Completing file name..."))
2674 (comint-dynamic-complete-as-filename)))
2676 (defun comint-dynamic-complete-as-filename ()
2677 "Dynamically complete at point as a filename.
2678 See `comint-dynamic-complete-filename'. Returns t if successful."
2679 (let* ((completion-ignore-case (memq system-type '(ms-dos windows-nt cygwin)))
2680 (completion-ignored-extensions comint-completion-fignore)
2681 ;; If we bind this, it breaks remote directory tracking in rlogin.el.
2682 ;; I think it was originally bound to solve file completion problems,
2683 ;; but subsequent changes may have made this unnecessary. sm.
2684 ;;(file-name-handler-alist nil)
2685 (minibuffer-p (window-minibuffer-p (selected-window)))
2686 (success t)
2687 (dirsuffix (cond ((not comint-completion-addsuffix)
2689 ((not (consp comint-completion-addsuffix))
2690 "/")
2692 (car comint-completion-addsuffix))))
2693 (filesuffix (cond ((not comint-completion-addsuffix)
2695 ((not (consp comint-completion-addsuffix))
2696 " ")
2698 (cdr comint-completion-addsuffix))))
2699 (filename (or (comint-match-partial-filename) ""))
2700 (pathdir (file-name-directory filename))
2701 (pathnondir (file-name-nondirectory filename))
2702 (directory (if pathdir (comint-directory pathdir) default-directory))
2703 (completion (file-name-completion pathnondir directory)))
2704 (cond ((null completion)
2705 (message "No completions of %s" filename)
2706 (setq success nil))
2707 ((eq completion t) ; Means already completed "file".
2708 (insert filesuffix)
2709 (unless minibuffer-p
2710 (message "Sole completion")))
2711 ((string-equal completion "") ; Means completion on "directory/".
2712 (comint-dynamic-list-filename-completions))
2713 (t ; Completion string returned.
2714 (let ((file (concat (file-name-as-directory directory) completion)))
2715 (insert (comint-quote-filename
2716 (substring (directory-file-name completion)
2717 (length pathnondir))))
2718 (cond ((symbolp (file-name-completion completion directory))
2719 ;; We inserted a unique completion.
2720 (insert (if (file-directory-p file) dirsuffix filesuffix))
2721 (unless minibuffer-p
2722 (message "Completed")))
2723 ((and comint-completion-recexact comint-completion-addsuffix
2724 (string-equal pathnondir completion)
2725 (file-exists-p file))
2726 ;; It's not unique, but user wants shortest match.
2727 (insert (if (file-directory-p file) dirsuffix filesuffix))
2728 (unless minibuffer-p
2729 (message "Completed shortest")))
2730 ((or comint-completion-autolist
2731 (string-equal pathnondir completion))
2732 ;; It's not unique, list possible completions.
2733 (comint-dynamic-list-filename-completions))
2735 (unless minibuffer-p
2736 (message "Partially completed")))))))
2737 success))
2740 (defun comint-replace-by-expanded-filename ()
2741 "Dynamically expand and complete the filename at point.
2742 Replace the filename with an expanded, canonicalised and completed replacement.
2743 \"Expanded\" means environment variables (e.g., $HOME) and `~'s are replaced
2744 with the corresponding directories. \"Canonicalised\" means `..' and `.' are
2745 removed, and the filename is made absolute instead of relative. For expansion
2746 see `expand-file-name' and `substitute-in-file-name'. For completion see
2747 `comint-dynamic-complete-filename'."
2748 (interactive)
2749 (let ((filename (comint-match-partial-filename)))
2750 (when filename
2751 (replace-match (expand-file-name filename) t t)
2752 (comint-dynamic-complete-filename))))
2755 (defun comint-dynamic-simple-complete (stub candidates)
2756 "Dynamically complete STUB from CANDIDATES list.
2757 This function inserts completion characters at point by completing STUB from
2758 the strings in CANDIDATES. A completions listing may be shown in a help buffer
2759 if completion is ambiguous.
2761 Returns nil if no completion was inserted.
2762 Returns `sole' if completed with the only completion match.
2763 Returns `shortest' if completed with the shortest of the completion matches.
2764 Returns `partial' if completed as far as possible with the completion matches.
2765 Returns `listed' if a completion listing was shown.
2767 See also `comint-dynamic-complete-filename'."
2768 (let* ((completion-ignore-case (memq system-type '(ms-dos windows-nt cygwin)))
2769 (suffix (cond ((not comint-completion-addsuffix) "")
2770 ((not (consp comint-completion-addsuffix)) " ")
2771 (t (cdr comint-completion-addsuffix))))
2772 (candidates (mapcar (function (lambda (x) (list x))) candidates))
2773 (completions (all-completions stub candidates)))
2774 (cond ((null completions)
2775 (message "No completions of %s" stub)
2776 nil)
2777 ((= 1 (length completions)) ; Gotcha!
2778 (let ((completion (car completions)))
2779 (if (string-equal completion stub)
2780 (message "Sole completion")
2781 (insert (substring completion (length stub)))
2782 (message "Completed"))
2783 (insert suffix)
2784 'sole))
2785 (t ; There's no unique completion.
2786 (let ((completion (try-completion stub candidates)))
2787 ;; Insert the longest substring.
2788 (insert (substring completion (length stub)))
2789 (cond ((and comint-completion-recexact comint-completion-addsuffix
2790 (string-equal stub completion)
2791 (member completion completions))
2792 ;; It's not unique, but user wants shortest match.
2793 (insert suffix)
2794 (message "Completed shortest")
2795 'shortest)
2796 ((or comint-completion-autolist
2797 (string-equal stub completion))
2798 ;; It's not unique, list possible completions.
2799 (comint-dynamic-list-completions completions)
2800 'listed)
2802 (message "Partially completed")
2803 'partial)))))))
2806 (defun comint-dynamic-list-filename-completions ()
2807 "List in help buffer possible completions of the filename at point."
2808 (interactive)
2809 (let* ((completion-ignore-case (memq system-type '(ms-dos windows-nt cygwin)))
2810 ;; If we bind this, it breaks remote directory tracking in rlogin.el.
2811 ;; I think it was originally bound to solve file completion problems,
2812 ;; but subsequent changes may have made this unnecessary. sm.
2813 ;;(file-name-handler-alist nil)
2814 (filename (or (comint-match-partial-filename) ""))
2815 (pathdir (file-name-directory filename))
2816 (pathnondir (file-name-nondirectory filename))
2817 (directory (if pathdir (comint-directory pathdir) default-directory))
2818 (completions (file-name-all-completions pathnondir directory)))
2819 (if (not completions)
2820 (message "No completions of %s" filename)
2821 (comint-dynamic-list-completions
2822 (mapcar 'comint-quote-filename completions)))))
2825 ;; This is bound locally in a *Completions* buffer to the list of
2826 ;; completions displayed, and is used to detect the case where the same
2827 ;; command is repeatedly used without the set of completions changing.
2828 (defvar comint-displayed-dynamic-completions nil)
2830 (defun comint-dynamic-list-completions (completions)
2831 "List in help buffer sorted COMPLETIONS.
2832 Typing SPC flushes the help buffer."
2833 (let ((window (get-buffer-window "*Completions*")))
2834 (setq completions (sort completions 'string-lessp))
2835 (if (and (eq last-command this-command)
2836 window (window-live-p window) (window-buffer window)
2837 (buffer-name (window-buffer window))
2838 ;; The above tests are not sufficient to detect the case where we
2839 ;; should scroll, because the top-level interactive command may
2840 ;; not have displayed a completions window the last time it was
2841 ;; invoked, and there may be such a window left over from a
2842 ;; previous completion command with a different set of
2843 ;; completions. To detect that case, we also test that the set
2844 ;; of displayed completions is in fact the same as the previously
2845 ;; displayed set.
2846 (equal completions
2847 (buffer-local-value 'comint-displayed-dynamic-completions
2848 (window-buffer window))))
2849 ;; If this command was repeated, and
2850 ;; there's a fresh completion window with a live buffer,
2851 ;; and this command is repeated, scroll that window.
2852 (with-current-buffer (window-buffer window)
2853 (if (pos-visible-in-window-p (point-max) window)
2854 (set-window-start window (point-min))
2855 (save-selected-window
2856 (select-window window)
2857 (scroll-up))))
2859 (let ((conf (current-window-configuration)))
2860 (with-output-to-temp-buffer "*Completions*"
2861 (display-completion-list completions))
2862 (message "Type space to flush; repeat completion command to scroll")
2863 (let (key first)
2864 (if (save-excursion
2865 (set-buffer (get-buffer "*Completions*"))
2866 (set (make-local-variable
2867 'comint-displayed-dynamic-completions)
2868 completions)
2869 (setq key (read-key-sequence nil)
2870 first (aref key 0))
2871 (and (consp first) (consp (event-start first))
2872 (eq (window-buffer (posn-window (event-start first)))
2873 (get-buffer "*Completions*"))
2874 (eq (key-binding key) 'mouse-choose-completion)))
2875 ;; If the user does mouse-choose-completion with the mouse,
2876 ;; execute the command, then delete the completion window.
2877 (progn
2878 (mouse-choose-completion first)
2879 (set-window-configuration conf))
2880 (if (eq first ?\ )
2881 (set-window-configuration conf)
2882 (setq unread-command-events (listify-key-sequence key)))))))))
2885 (defun comint-get-next-from-history ()
2886 "After fetching a line from input history, this fetches the following line.
2887 In other words, this recalls the input line after the line you recalled last.
2888 You can use this to repeat a sequence of input lines."
2889 (interactive)
2890 (if comint-save-input-ring-index
2891 (progn
2892 (setq comint-input-ring-index (1+ comint-save-input-ring-index))
2893 (comint-next-input 1))
2894 (message "No previous history command")))
2896 (defun comint-accumulate ()
2897 "Accumulate a line to send as input along with more lines.
2898 This inserts a newline so that you can enter more text
2899 to be sent along with this line. Use \\[comint-send-input]
2900 to send all the accumulated input, at once.
2901 The entire accumulated text becomes one item in the input history
2902 when you send it."
2903 (interactive)
2904 (insert "\n")
2905 (set-marker comint-accum-marker (point))
2906 (if comint-input-ring-index
2907 (setq comint-save-input-ring-index
2908 (- comint-input-ring-index 1))))
2910 (defun comint-goto-process-mark ()
2911 "Move point to the process mark.
2912 The process mark separates output, and input already sent,
2913 from input that has not yet been sent."
2914 (interactive)
2915 (let ((proc (or (get-buffer-process (current-buffer))
2916 (error "Current buffer has no process"))))
2917 (goto-char (process-mark proc))
2918 (when (interactive-p)
2919 (message "Point is now at the process mark"))))
2921 (defun comint-bol-or-process-mark ()
2922 "Move point to beginning of line (after prompt) or to the process mark.
2923 The first time you use this command, it moves to the beginning of the line
2924 \(but after the prompt, if any). If you repeat it again immediately,
2925 it moves point to the process mark.
2927 The process mark separates the process output, along with input already sent,
2928 from input that has not yet been sent. Ordinarily, the process mark
2929 is at the beginning of the current input line; but if you have
2930 used \\[comint-accumulate] to send multiple lines at once,
2931 the process mark is at the beginning of the accumulated input."
2932 (interactive)
2933 (if (not (eq last-command 'comint-bol-or-process-mark))
2934 (comint-bol nil)
2935 (comint-goto-process-mark)))
2937 (defun comint-set-process-mark ()
2938 "Set the process mark at point."
2939 (interactive)
2940 (let ((proc (or (get-buffer-process (current-buffer))
2941 (error "Current buffer has no process"))))
2942 (set-marker (process-mark proc) (point))
2943 (message "Process mark set")))
2946 ;; Author: Peter Breton <pbreton@cs.umb.edu>
2948 ;; This little add-on for comint is intended to make it easy to get
2949 ;; output from currently active comint buffers into another buffer,
2950 ;; or buffers, and then go back to using the comint shell.
2952 ;; My particular use is SQL interpreters; I want to be able to execute a
2953 ;; query using the process associated with a comint-buffer, and save that
2954 ;; somewhere else. Because the process might have state (for example, it
2955 ;; could be in an uncommitted transaction), just running starting a new
2956 ;; process and having it execute the query and then finish, would not
2957 ;; work. I'm sure there are other uses as well, although in many cases
2958 ;; starting a new process is the simpler, and thus preferable, approach.
2960 ;; The basic implementation is as follows: comint-redirect changes the
2961 ;; preoutput filter functions (comint-preoutput-filter-functions) to use
2962 ;; its own filter. The filter puts the output into the designated buffer,
2963 ;; or buffers, until it sees a regexp that tells it to stop (by default,
2964 ;; this is the prompt for the interpreter, comint-prompt-regexp). When it
2965 ;; sees the stop regexp, it restores the old filter functions, and runs
2966 ;; comint-redirect-hook.
2968 ;; Each comint buffer may only use one redirection at a time, but any number
2969 ;; of different comint buffers may be simultaneously redirected.
2971 ;; NOTE: It is EXTREMELY important that `comint-prompt-regexp' be set to the
2972 ;; correct prompt for your interpreter, or that you supply a regexp that says
2973 ;; when the redirection is finished. Otherwise, redirection will continue
2974 ;; indefinitely. The code now does a sanity check to ensure that it can find
2975 ;; a prompt in the comint buffer; however, it is still important to ensure that
2976 ;; this prompt is set correctly.
2978 ;; XXX: This doesn't work so well unless comint-prompt-regexp is set;
2979 ;; perhaps it should prompt for a terminating string (with an
2980 ;; appropriate magic default by examining what we think is the prompt)?
2983 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2984 ;; Variables
2985 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2987 (defcustom comint-redirect-verbose nil
2988 "*If non-nil, print messages each time the redirection filter is invoked.
2989 Also print a message when redirection is completed."
2990 :group 'comint
2991 :type 'boolean)
2993 ;; Directly analagous to comint-preoutput-filter-functions
2994 (defvar comint-redirect-filter-functions nil
2995 "List of functions to call before inserting redirected process output.
2996 Each function gets one argument, a string containing the text received
2997 from the subprocess. It should return the string to insert, perhaps
2998 the same string that was received, or perhaps a modified or transformed
2999 string.
3001 The functions on the list are called sequentially, and each one is given
3002 the string returned by the previous one. The string returned by the
3003 last function is the text that is actually inserted in the redirection buffer.
3005 You can use `add-hook' to add functions to this list
3006 either globally or locally.")
3008 ;; Internal variables
3010 (defvar comint-redirect-output-buffer nil
3011 "The buffer or list of buffers to put output into.")
3013 (defvar comint-redirect-finished-regexp nil
3014 "Regular expression that determines when to stop redirection in Comint.
3015 When the redirection filter function is given output that matches this regexp,
3016 the output is inserted as usual, and redirection is completed.")
3018 (defvar comint-redirect-insert-matching-regexp nil
3019 "If non-nil, the text that ends a redirection is included in it.
3020 More precisely, the text that matches `comint-redirect-finished-regexp'
3021 and therefore terminates an output redirection is inserted in the
3022 redirection target buffer, along with the preceding output.")
3024 (defvar comint-redirect-echo-input nil
3025 "Non-nil means echo input in the process buffer even during redirection.")
3027 (defvar comint-redirect-completed nil
3028 "Non-nil if redirection has completed in the current buffer.")
3030 (defvar comint-redirect-original-mode-line-process nil
3031 "Original mode line for redirected process.")
3033 (defvar comint-redirect-perform-sanity-check t
3034 "If non-nil, check that redirection is likely to complete successfully.
3035 More precisely, before starting a redirection, verify that the
3036 regular expression `comint-redirect-finished-regexp' that controls
3037 when to terminate it actually matches some text already in the process
3038 buffer. The idea is that this regular expression should match a prompt
3039 string, and that there ought to be at least one copy of your prompt string
3040 in the process buffer already.")
3042 (defvar comint-redirect-original-filter-function nil
3043 "The process filter that was in place when redirection is started.
3044 When redirection is completed, the process filter is restored to
3045 this value.")
3047 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3048 ;; Functions
3049 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3051 (defun comint-redirect-setup (output-buffer
3052 comint-buffer
3053 finished-regexp
3054 &optional echo-input)
3055 "Set up for output redirection.
3056 This function sets local variables that are used by `comint-redirect-filter'
3057 to perform redirection.
3059 Output from COMINT-BUFFER is redirected to OUTPUT-BUFFER, until something
3060 in the output matches FINISHED-REGEXP.
3062 If optional argument ECHO-INPUT is non-nil, output is echoed to the
3063 original comint buffer.
3065 This function is called by `comint-redirect-send-command-to-process',
3066 and does not normally need to be invoked by the end user or programmer."
3067 (with-current-buffer comint-buffer
3069 (make-local-variable 'comint-redirect-original-mode-line-process)
3070 (setq comint-redirect-original-mode-line-process mode-line-process)
3072 (make-local-variable 'comint-redirect-output-buffer)
3073 (setq comint-redirect-output-buffer output-buffer)
3075 (make-local-variable 'comint-redirect-finished-regexp)
3076 (setq comint-redirect-finished-regexp finished-regexp)
3078 (make-local-variable 'comint-redirect-echo-input)
3079 (setq comint-redirect-echo-input echo-input)
3081 (make-local-variable 'comint-redirect-completed)
3082 (setq comint-redirect-completed nil)
3084 (setq mode-line-process
3085 (if mode-line-process
3086 (list (concat (elt mode-line-process 0) " Redirection"))
3087 (list ":%s Redirection")))))
3089 (defun comint-redirect-cleanup ()
3090 "End a Comint redirection. See `comint-redirect-send-command'."
3091 (interactive)
3092 ;; Restore the process filter
3093 (set-process-filter (get-buffer-process (current-buffer))
3094 comint-redirect-original-filter-function)
3095 ;; Restore the mode line
3096 (setq mode-line-process comint-redirect-original-mode-line-process)
3097 ;; Set the completed flag
3098 (setq comint-redirect-completed t))
3100 ;; Because the cleanup happens as a callback, it's not easy to guarantee
3101 ;; that it really occurs.
3102 (defalias 'comint-redirect-remove-redirection 'comint-redirect-cleanup)
3104 (defun comint-redirect-filter (process input-string)
3105 "Filter function which redirects output from PROCESS to a buffer or buffers.
3106 The variable `comint-redirect-output-buffer' says which buffer(s) to
3107 place output in.
3109 INPUT-STRING is the input from the comint process.
3111 This function runs as a process filter, and does not need to be invoked by the
3112 end user."
3113 (and process
3114 (with-current-buffer (process-buffer process)
3115 (comint-redirect-preoutput-filter input-string)
3116 ;; If we have to echo output, give it to the original filter function
3117 (and comint-redirect-echo-input
3118 comint-redirect-original-filter-function
3119 (funcall comint-redirect-original-filter-function
3120 process input-string)))))
3123 (defun comint-redirect-preoutput-filter (input-string)
3124 "Comint filter function which redirects comint output to a buffer or buffers.
3125 The variable `comint-redirect-output-buffer' says which buffer(s) to
3126 place output in.
3128 INPUT-STRING is the input from the comint process.
3130 This function does not need to be invoked by the end user."
3131 (let ((output-buffer-list
3132 (if (listp comint-redirect-output-buffer)
3133 comint-redirect-output-buffer
3134 (list comint-redirect-output-buffer)))
3135 (filtered-input-string input-string))
3137 ;; If there are any filter functions, give them a chance to modify the string
3138 (let ((functions comint-redirect-filter-functions))
3139 (while (and functions filtered-input-string)
3140 (if (eq (car functions) t)
3141 ;; If a local value says "use the default value too",
3142 ;; do that.
3143 (let ((functions (default-value 'comint-redirect-filter-functions)))
3144 (while (and functions filtered-input-string)
3145 (setq filtered-input-string
3146 (funcall (car functions) filtered-input-string))
3147 (setq functions (cdr functions))))
3148 (setq filtered-input-string
3149 (funcall (car functions) filtered-input-string)))
3150 (setq functions (cdr functions))))
3152 ;; Clobber `comint-redirect-finished-regexp'
3153 (or comint-redirect-insert-matching-regexp
3154 (and (string-match comint-redirect-finished-regexp filtered-input-string)
3155 (setq filtered-input-string
3156 (replace-match "" nil nil filtered-input-string))))
3158 ;; Send output to all registered buffers
3159 (save-excursion
3160 (mapcar
3161 (function (lambda(buf)
3162 ;; Set this buffer to the output buffer
3163 (set-buffer (get-buffer-create buf))
3164 ;; Go to the end of the buffer
3165 (goto-char (point-max))
3166 ;; Insert the output
3167 (insert filtered-input-string)))
3168 output-buffer-list))
3170 ;; Message
3171 (and comint-redirect-verbose
3172 (message "Redirected output to buffer(s) %s"
3173 (mapconcat 'identity output-buffer-list " ")))
3175 ;; If we see the prompt, tidy up
3176 ;; We'll look for the prompt in the original string, so nobody can
3177 ;; clobber it
3178 (and (string-match comint-redirect-finished-regexp input-string)
3179 (progn
3180 (and comint-redirect-verbose
3181 (message "Redirection completed"))
3182 (comint-redirect-cleanup)
3183 (run-hooks 'comint-redirect-hook)))
3184 ;; Echo input?
3185 (if comint-redirect-echo-input
3186 filtered-input-string
3187 "")))
3189 ;;;###autoload
3190 (defun comint-redirect-send-command (command output-buffer echo &optional no-display)
3191 "Send COMMAND to process in current buffer, with output to OUTPUT-BUFFER.
3192 With prefix arg, echo output in process buffer.
3194 If NO-DISPLAY is non-nil, do not show the output buffer."
3195 (interactive "sCommand: \nBOutput Buffer: \nP")
3196 (let ((process (get-buffer-process (current-buffer))))
3197 (if process
3198 (comint-redirect-send-command-to-process
3199 command output-buffer (current-buffer) echo no-display)
3200 (error "No process for current buffer"))))
3202 ;;;###autoload
3203 (defun comint-redirect-send-command-to-process
3204 (command output-buffer process echo &optional no-display)
3205 "Send COMMAND to PROCESS, with output to OUTPUT-BUFFER.
3206 With prefix arg, echo output in process buffer.
3208 If NO-DISPLAY is non-nil, do not show the output buffer."
3209 (interactive "sCommand: \nBOutput Buffer: \nbProcess Buffer: \nP")
3210 (let* (;; The process buffer
3211 (process-buffer (if (processp process)
3212 (process-buffer process)
3213 process))
3214 (proc (get-buffer-process process-buffer)))
3215 ;; Change to the process buffer
3216 (with-current-buffer process-buffer
3218 ;; Make sure there's a prompt in the current process buffer
3219 (and comint-redirect-perform-sanity-check
3220 (save-excursion
3221 (goto-char (point-max))
3222 (or (re-search-backward comint-prompt-regexp nil t)
3223 (error "No prompt found or `comint-prompt-regexp' not set properly"))))
3225 ;;;;;;;;;;;;;;;;;;;;;
3226 ;; Set up for redirection
3227 ;;;;;;;;;;;;;;;;;;;;;
3228 (comint-redirect-setup
3229 ;; Output Buffer
3230 output-buffer
3231 ;; Comint Buffer
3232 (current-buffer)
3233 ;; Finished Regexp
3234 comint-prompt-regexp
3235 ;; Echo input
3236 echo)
3238 ;;;;;;;;;;;;;;;;;;;;;
3239 ;; Set the filter
3240 ;;;;;;;;;;;;;;;;;;;;;
3241 ;; Save the old filter
3242 (setq comint-redirect-original-filter-function
3243 (process-filter proc))
3244 (set-process-filter proc 'comint-redirect-filter)
3246 ;;;;;;;;;;;;;;;;;;;;;
3247 ;; Send the command
3248 ;;;;;;;;;;;;;;;;;;;;;
3249 (process-send-string
3250 (current-buffer)
3251 (concat command "\n"))
3253 ;;;;;;;;;;;;;;;;;;;;;
3254 ;; Show the output
3255 ;;;;;;;;;;;;;;;;;;;;;
3256 (or no-display
3257 (display-buffer
3258 (get-buffer-create
3259 (if (listp output-buffer)
3260 (car output-buffer)
3261 output-buffer)))))))
3263 ;;;###autoload
3264 (defun comint-redirect-results-list (command regexp regexp-group)
3265 "Send COMMAND to current process.
3266 Return a list of expressions in the output which match REGEXP.
3267 REGEXP-GROUP is the regular expression group in REGEXP to use."
3268 (comint-redirect-results-list-from-process
3269 (get-buffer-process (current-buffer))
3270 command regexp regexp-group))
3272 ;;;###autoload
3273 (defun comint-redirect-results-list-from-process (process command regexp regexp-group)
3274 "Send COMMAND to PROCESS.
3275 Return a list of expressions in the output which match REGEXP.
3276 REGEXP-GROUP is the regular expression group in REGEXP to use."
3277 (let ((output-buffer " *Comint Redirect Work Buffer*")
3278 results)
3279 (save-excursion
3280 (set-buffer (get-buffer-create output-buffer))
3281 (erase-buffer)
3282 (comint-redirect-send-command-to-process command
3283 output-buffer process nil t)
3284 ;; Wait for the process to complete
3285 (set-buffer (process-buffer process))
3286 (while (null comint-redirect-completed)
3287 (accept-process-output nil 1))
3288 ;; Collect the output
3289 (set-buffer output-buffer)
3290 (goto-char (point-min))
3291 ;; Skip past the command, if it was echoed
3292 (and (looking-at command)
3293 (forward-line))
3294 (while (re-search-forward regexp nil t)
3295 (setq results
3296 (cons (buffer-substring-no-properties
3297 (match-beginning regexp-group)
3298 (match-end regexp-group))
3299 results)))
3300 results)))
3302 (mapc (lambda (x)
3303 (add-to-list 'debug-ignored-errors x))
3304 '("^Not at command line$"
3305 "^Empty input ring$"
3306 "^No history$"
3307 "^Not found$" ; Too common?
3308 "^Current buffer has no process$"))
3311 ;; Converting process modes to use comint mode
3312 ;; ===========================================================================
3313 ;; The code in the Emacs 19 distribution has all been modified to use comint
3314 ;; where needed. However, there are `third-party' packages out there that
3315 ;; still use the old shell mode. Here's a guide to conversion.
3317 ;; Renaming variables
3318 ;; Most of the work is renaming variables and functions. These are the common
3319 ;; ones:
3320 ;; Local variables:
3321 ;; last-input-start comint-last-input-start
3322 ;; last-input-end comint-last-input-end
3323 ;; shell-prompt-pattern comint-prompt-regexp
3324 ;; shell-set-directory-error-hook <no equivalent>
3325 ;; Miscellaneous:
3326 ;; shell-set-directory <unnecessary>
3327 ;; shell-mode-map comint-mode-map
3328 ;; Commands:
3329 ;; shell-send-input comint-send-input
3330 ;; shell-send-eof comint-delchar-or-maybe-eof
3331 ;; kill-shell-input comint-kill-input
3332 ;; interrupt-shell-subjob comint-interrupt-subjob
3333 ;; stop-shell-subjob comint-stop-subjob
3334 ;; quit-shell-subjob comint-quit-subjob
3335 ;; kill-shell-subjob comint-kill-subjob
3336 ;; kill-output-from-shell comint-delete-output
3337 ;; show-output-from-shell comint-show-output
3338 ;; copy-last-shell-input Use comint-previous-input/comint-next-input
3340 ;; SHELL-SET-DIRECTORY is gone, its functionality taken over by
3341 ;; SHELL-DIRECTORY-TRACKER, the shell mode's comint-input-filter-functions.
3342 ;; Comint mode does not provide functionality equivalent to
3343 ;; shell-set-directory-error-hook; it is gone.
3345 ;; comint-last-input-start is provided for modes which want to munge
3346 ;; the buffer after input is sent, perhaps because the inferior
3347 ;; insists on echoing the input. The LAST-INPUT-START variable in
3348 ;; the old shell package was used to implement a history mechanism,
3349 ;; but you should think twice before using comint-last-input-start
3350 ;; for this; the input history ring often does the job better.
3352 ;; If you are implementing some process-in-a-buffer mode, called foo-mode, do
3353 ;; *not* create the comint-mode local variables in your foo-mode function.
3354 ;; This is not modular. Instead, call comint-mode, and let *it* create the
3355 ;; necessary comint-specific local variables. Then create the
3356 ;; foo-mode-specific local variables in foo-mode. Set the buffer's keymap to
3357 ;; be foo-mode-map, and its mode to be foo-mode. Set the comint-mode hooks
3358 ;; (comint-{prompt-regexp, input-filter, input-filter-functions,
3359 ;; get-old-input) that need to be different from the defaults. Call
3360 ;; foo-mode-hook, and you're done. Don't run the comint-mode hook yourself;
3361 ;; comint-mode will take care of it. The following example, from shell.el,
3362 ;; is typical:
3364 ;; (defvar shell-mode-map '())
3365 ;; (cond ((not shell-mode-map)
3366 ;; (setq shell-mode-map (copy-keymap comint-mode-map))
3367 ;; (define-key shell-mode-map "\C-c\C-f" 'shell-forward-command)
3368 ;; (define-key shell-mode-map "\C-c\C-b" 'shell-backward-command)
3369 ;; (define-key shell-mode-map "\t" 'comint-dynamic-complete)
3370 ;; (define-key shell-mode-map "\M-?"
3371 ;; 'comint-dynamic-list-filename-completions)))
3373 ;; (defun shell-mode ()
3374 ;; (interactive)
3375 ;; (comint-mode)
3376 ;; (setq comint-prompt-regexp shell-prompt-pattern)
3377 ;; (setq major-mode 'shell-mode)
3378 ;; (setq mode-name "Shell")
3379 ;; (use-local-map shell-mode-map)
3380 ;; (make-local-variable 'shell-directory-stack)
3381 ;; (setq shell-directory-stack nil)
3382 ;; (add-hook 'comint-input-filter-functions 'shell-directory-tracker)
3383 ;; (run-hooks 'shell-mode-hook))
3386 ;; Completion for comint-mode users
3388 ;; For modes that use comint-mode, comint-dynamic-complete-functions is the
3389 ;; hook to add completion functions to. Functions on this list should return
3390 ;; non-nil if completion occurs (i.e., further completion should not occur).
3391 ;; You could use comint-dynamic-simple-complete to do the bulk of the
3392 ;; completion job.
3395 (provide 'comint)
3397 ;;; arch-tag: 1793314c-09db-40be-9549-9aeae3e75164
3398 ;;; comint.el ends here