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60370d40 | 1 | ;;; esh-mode.el --- user interface |
26b4dc84 | 2 | |
5fd6d89f | 3 | ;; Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, |
8b72699e | 4 | ;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
26b4dc84 | 5 | |
7de5b421 GM |
6 | ;; Author: John Wiegley <johnw@gnu.org> |
7 | ||
26b4dc84 GM |
8 | ;; This file is part of GNU Emacs. |
9 | ||
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
11 | ;; it under the terms of the GNU General Public License as published by | |
e0085d62 | 12 | ;; the Free Software Foundation; either version 3, or (at your option) |
26b4dc84 GM |
13 | ;; any later version. |
14 | ||
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
3a35cf56 LK |
22 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
23 | ;; Boston, MA 02110-1301, USA. | |
26b4dc84 | 24 | |
26b4dc84 GM |
25 | ;;; Commentary: |
26 | ||
27 | ;; Basically, Eshell is used just like shell mode (<M-x shell>). The | |
28 | ;; keystrokes for navigating the buffer, and accessing the command | |
29 | ;; history, are identical. Unlike shell mode, however, Eshell mode's | |
30 | ;; governing process is Emacs itself. With shell mode, an inferior | |
31 | ;; shell process is executed that communicates with Emacs via comint | |
32 | ;; -- a mode for handling sub-process interaction. Eshell mode, on | |
33 | ;; the other hand, is a truly native Emacs shell. No subprocess are | |
34 | ;; invoked except the ones requested by the user at the prompt. | |
35 | ;; | |
36 | ;; After entering a command, use <RET> to invoke it ([Command | |
37 | ;; invocation]) . If there is a command on disk, it will be executed | |
38 | ;; as in a normal shell. If there is no command by that name on disk, | |
39 | ;; but a Lisp function with that name is defined, the Lisp function | |
40 | ;; will be called, using the arguments passed on the command line. | |
41 | ;; | |
42 | ;; Some of the other features of the command interaction mode are: | |
43 | ;; | |
44 | ;; @ <M-RET> can be used to accumulate further commands while a | |
45 | ;; command is currently running. Since all input is passed to the | |
46 | ;; subprocess being executed, there is no automatic input queueing | |
47 | ;; as there is with other shells. | |
48 | ;; | |
49 | ;; @ <C-c C-t> can be used to truncate the buffer if it grows too | |
50 | ;; large. | |
51 | ;; | |
52 | ;; @ <C-c C-r> will move point to the beginning of the output of the | |
53 | ;; last command. With a prefix argument, it will narrow to view | |
54 | ;; only that output. | |
55 | ;; | |
56 | ;; @ <C-c C-o> will delete the output from the last command. | |
57 | ;; | |
58 | ;; @ <C-c C-f> will move forward a complete shell argument. | |
59 | ;; | |
60 | ;; @ <C-c C-b> will move backward a complete shell argument. | |
61 | ||
4e6cc05c GM |
62 | (provide 'esh-mode) |
63 | ||
64 | (eval-when-compile (require 'esh-util)) | |
26b4dc84 GM |
65 | (require 'esh-module) |
66 | (require 'esh-cmd) | |
67 | (require 'esh-io) | |
68 | (require 'esh-var) | |
69 | ||
4e6cc05c GM |
70 | (defgroup eshell-mode nil |
71 | "This module contains code for handling input from the user." | |
72 | :tag "User interface" | |
73 | :group 'eshell) | |
74 | ||
26b4dc84 GM |
75 | ;;; User Variables: |
76 | ||
77 | (defcustom eshell-mode-unload-hook nil | |
78 | "*A hook that gets run when `eshell-mode' is unloaded." | |
79 | :type 'hook | |
80 | :group 'eshell-mode) | |
81 | ||
82 | (defcustom eshell-mode-hook nil | |
83 | "*A hook that gets run when `eshell-mode' is entered." | |
84 | :type 'hook | |
85 | :group 'eshell-mode) | |
86 | ||
87 | (defcustom eshell-first-time-mode-hook nil | |
88 | "*A hook that gets run the first time `eshell-mode' is entered. | |
89 | That is to say, the first time during an Emacs session." | |
90 | :type 'hook | |
91 | :group 'eshell-mode) | |
92 | ||
93 | (defcustom eshell-exit-hook '(eshell-query-kill-processes) | |
94 | "*A hook that is run whenever `eshell' is exited. | |
95 | This hook is only run if exiting actually kills the buffer." | |
96 | :type 'hook | |
97 | :group 'eshell-mode) | |
98 | ||
99 | (defcustom eshell-kill-on-exit t | |
100 | "*If non-nil, kill the Eshell buffer on the `exit' command. | |
101 | Otherwise, the buffer will simply be buried." | |
102 | :type 'boolean | |
103 | :group 'eshell-mode) | |
104 | ||
105 | (defcustom eshell-input-filter-functions nil | |
106 | "*Functions to call before input is processed. | |
107 | The input is contained in the region from `eshell-last-input-start' to | |
108 | `eshell-last-input-end'." | |
109 | :type 'hook | |
110 | :group 'eshell-mode) | |
111 | ||
79cf8e80 JW |
112 | (defcustom eshell-send-direct-to-subprocesses nil |
113 | "*If t, send any input immediately to a subprocess." | |
114 | :type 'boolean | |
115 | :group 'eshell-mode) | |
116 | ||
26b4dc84 GM |
117 | (defcustom eshell-expand-input-functions nil |
118 | "*Functions to call before input is parsed. | |
119 | Each function is passed two arguments, which bounds the region of the | |
120 | current input text." | |
121 | :type 'hook | |
122 | :group 'eshell-mode) | |
123 | ||
124 | (defcustom eshell-scroll-to-bottom-on-input nil | |
125 | "*Controls whether input to interpreter causes window to scroll. | |
126 | If nil, then do not scroll. If t or `all', scroll all windows showing | |
127 | buffer. If `this', scroll only the selected window. | |
128 | ||
129 | See `eshell-preinput-scroll-to-bottom'." | |
130 | :type '(radio (const :tag "Do not scroll Eshell windows" nil) | |
131 | (const :tag "Scroll all windows showing the buffer" all) | |
132 | (const :tag "Scroll only the selected window" this)) | |
133 | :group 'eshell-mode) | |
134 | ||
135 | (defcustom eshell-scroll-to-bottom-on-output nil | |
136 | "*Controls whether interpreter output causes window to scroll. | |
137 | If nil, then do not scroll. If t or `all', scroll all windows showing | |
138 | buffer. If `this', scroll only the selected window. If `others', | |
139 | scroll only those that are not the selected window. | |
140 | ||
141 | See variable `eshell-scroll-show-maximum-output' and function | |
142 | `eshell-postoutput-scroll-to-bottom'." | |
143 | :type '(radio (const :tag "Do not scroll Eshell windows" nil) | |
144 | (const :tag "Scroll all windows showing the buffer" all) | |
145 | (const :tag "Scroll only the selected window" this) | |
146 | (const :tag "Scroll all windows other than selected" this)) | |
147 | :group 'eshell-mode) | |
148 | ||
149 | (defcustom eshell-scroll-show-maximum-output t | |
150 | "*Controls how interpreter output causes window to scroll. | |
151 | If non-nil, then show the maximum output when the window is scrolled. | |
152 | ||
153 | See variable `eshell-scroll-to-bottom-on-output' and function | |
154 | `eshell-postoutput-scroll-to-bottom'." | |
155 | :type 'boolean | |
156 | :group 'eshell-mode) | |
157 | ||
158 | (defcustom eshell-buffer-maximum-lines 1024 | |
159 | "*The maximum size in lines for eshell buffers. | |
160 | Eshell buffers are truncated from the top to be no greater than this | |
161 | number, if the function `eshell-truncate-buffer' is on | |
162 | `eshell-output-filter-functions'." | |
163 | :type 'integer | |
164 | :group 'eshell-mode) | |
165 | ||
166 | (defcustom eshell-output-filter-functions | |
007306f9 GM |
167 | '(eshell-postoutput-scroll-to-bottom |
168 | eshell-handle-control-codes | |
26b4dc84 GM |
169 | eshell-watch-for-password-prompt) |
170 | "*Functions to call before output is displayed. | |
171 | These functions are only called for output that is displayed | |
172 | interactively, and not for output which is redirected." | |
173 | :type 'hook | |
174 | :group 'eshell-mode) | |
175 | ||
176 | (defcustom eshell-preoutput-filter-functions nil | |
177 | "*Functions to call before output is inserted into the buffer. | |
178 | These functions get one argument, a string containing the text to be | |
179 | inserted. They return the string as it should be inserted." | |
180 | :type 'hook | |
181 | :group 'eshell-mode) | |
182 | ||
183 | (defcustom eshell-password-prompt-regexp | |
dace60cf | 184 | "[Pp]ass\\(word\\|phrase\\).*:\\s *\\'" |
26b4dc84 GM |
185 | "*Regexp matching prompts for passwords in the inferior process. |
186 | This is used by `eshell-watch-for-password-prompt'." | |
187 | :type 'regexp | |
188 | :group 'eshell-mode) | |
189 | ||
190 | (defcustom eshell-skip-prompt-function nil | |
191 | "*A function called from beginning of line to skip the prompt." | |
6a44f20f | 192 | :type '(choice (const nil) function) |
26b4dc84 GM |
193 | :group 'eshell-mode) |
194 | ||
195 | (defcustom eshell-status-in-modeline t | |
196 | "*If non-nil, let the user know a command is running in the modeline." | |
197 | :type 'boolean | |
198 | :group 'eshell-mode) | |
199 | ||
26b4dc84 GM |
200 | (defvar eshell-first-time-p t |
201 | "A variable which is non-nil the first time Eshell is loaded.") | |
202 | ||
203 | ;; Internal Variables: | |
204 | ||
205 | ;; these are only set to `nil' initially for the sake of the | |
206 | ;; byte-compiler, when compiling other files which `require' this one | |
207 | (defvar eshell-mode nil) | |
208 | (defvar eshell-mode-map nil) | |
209 | (defvar eshell-command-running-string "--") | |
210 | (defvar eshell-command-map nil) | |
211 | (defvar eshell-command-prefix nil) | |
212 | (defvar eshell-last-input-start nil) | |
213 | (defvar eshell-last-input-end nil) | |
214 | (defvar eshell-last-output-start nil) | |
215 | (defvar eshell-last-output-block-begin nil) | |
216 | (defvar eshell-last-output-end nil) | |
217 | ||
218 | (defvar eshell-currently-handling-window nil) | |
219 | (defvar eshell-mode-syntax-table nil) | |
220 | (defvar eshell-mode-abbrev-table nil) | |
221 | ||
222 | (define-abbrev-table 'eshell-mode-abbrev-table ()) | |
223 | ||
26b4dc84 GM |
224 | (if (not eshell-mode-syntax-table) |
225 | (let ((i 0)) | |
226 | (setq eshell-mode-syntax-table (make-syntax-table)) | |
227 | (while (< i ?0) | |
228 | (modify-syntax-entry i "_ " eshell-mode-syntax-table) | |
229 | (setq i (1+ i))) | |
230 | (setq i (1+ ?9)) | |
231 | (while (< i ?A) | |
232 | (modify-syntax-entry i "_ " eshell-mode-syntax-table) | |
233 | (setq i (1+ i))) | |
234 | (setq i (1+ ?Z)) | |
235 | (while (< i ?a) | |
236 | (modify-syntax-entry i "_ " eshell-mode-syntax-table) | |
237 | (setq i (1+ i))) | |
238 | (setq i (1+ ?z)) | |
239 | (while (< i 128) | |
240 | (modify-syntax-entry i "_ " eshell-mode-syntax-table) | |
241 | (setq i (1+ i))) | |
242 | (modify-syntax-entry ? " " eshell-mode-syntax-table) | |
243 | (modify-syntax-entry ?\t " " eshell-mode-syntax-table) | |
244 | (modify-syntax-entry ?\f " " eshell-mode-syntax-table) | |
245 | (modify-syntax-entry ?\n "> " eshell-mode-syntax-table) | |
246 | ;; Give CR the same syntax as newline, for selective-display. | |
247 | (modify-syntax-entry ?\^m "> " eshell-mode-syntax-table) | |
248 | ;;; (modify-syntax-entry ?\; "< " eshell-mode-syntax-table) | |
249 | (modify-syntax-entry ?` "' " eshell-mode-syntax-table) | |
250 | (modify-syntax-entry ?' "' " eshell-mode-syntax-table) | |
251 | (modify-syntax-entry ?, "' " eshell-mode-syntax-table) | |
252 | ;; Used to be singlequote; changed for flonums. | |
253 | (modify-syntax-entry ?. "_ " eshell-mode-syntax-table) | |
254 | (modify-syntax-entry ?- "_ " eshell-mode-syntax-table) | |
255 | (modify-syntax-entry ?| ". " eshell-mode-syntax-table) | |
256 | (modify-syntax-entry ?# "' " eshell-mode-syntax-table) | |
257 | (modify-syntax-entry ?\" "\" " eshell-mode-syntax-table) | |
258 | (modify-syntax-entry ?\\ "/ " eshell-mode-syntax-table) | |
259 | (modify-syntax-entry ?\( "() " eshell-mode-syntax-table) | |
260 | (modify-syntax-entry ?\) ")( " eshell-mode-syntax-table) | |
261 | (modify-syntax-entry ?\{ "(} " eshell-mode-syntax-table) | |
262 | (modify-syntax-entry ?\} "){ " eshell-mode-syntax-table) | |
263 | (modify-syntax-entry ?\[ "(] " eshell-mode-syntax-table) | |
264 | (modify-syntax-entry ?\] ")[ " eshell-mode-syntax-table) | |
265 | ;; All non-word multibyte characters should be `symbol'. | |
a3269bc4 | 266 | (if (featurep 'xemacs) |
26b4dc84 GM |
267 | (map-char-table |
268 | (function | |
269 | (lambda (key val) | |
270 | (and (characterp key) | |
271 | (>= (char-int key) 256) | |
272 | (/= (char-syntax key) ?w) | |
273 | (modify-syntax-entry key "_ " | |
274 | eshell-mode-syntax-table)))) | |
275 | (standard-syntax-table)) | |
276 | (map-char-table | |
277 | (function | |
278 | (lambda (key val) | |
2494c91b | 279 | (and (if (consp key) |
8f924df7 KH |
280 | (and (>= (car key) 128) |
281 | (/= (char-syntax (car key)) ?w)) | |
2494c91b KH |
282 | (and (>= key 256) |
283 | (/= (char-syntax key) ?w))) | |
26b4dc84 GM |
284 | (modify-syntax-entry key "_ " |
285 | eshell-mode-syntax-table)))) | |
286 | (standard-syntax-table))))) | |
287 | ||
288 | ;;; User Functions: | |
289 | ||
290 | ;;;###autoload | |
291 | (defun eshell-mode () | |
292 | "Emacs shell interactive mode. | |
293 | ||
294 | \\{eshell-mode-map}" | |
295 | (kill-all-local-variables) | |
296 | ||
297 | (setq major-mode 'eshell-mode) | |
298 | (setq mode-name "EShell") | |
299 | (set (make-local-variable 'eshell-mode) t) | |
300 | ||
301 | (make-local-variable 'eshell-mode-map) | |
302 | (setq eshell-mode-map (make-sparse-keymap)) | |
303 | (use-local-map eshell-mode-map) | |
304 | ||
305 | (when eshell-status-in-modeline | |
306 | (make-local-variable 'eshell-command-running-string) | |
48e889be | 307 | (let ((fmt (copy-sequence mode-line-format))) |
26b4dc84 GM |
308 | (make-local-variable 'mode-line-format) |
309 | (setq mode-line-format fmt)) | |
310 | (let ((modeline (memq 'mode-line-modified mode-line-format))) | |
311 | (if modeline | |
312 | (setcar modeline 'eshell-command-running-string)))) | |
313 | ||
314 | (define-key eshell-mode-map [return] 'eshell-send-input) | |
315 | (define-key eshell-mode-map [(control ?m)] 'eshell-send-input) | |
316 | (define-key eshell-mode-map [(control ?j)] 'eshell-send-input) | |
317 | (define-key eshell-mode-map [(meta return)] 'eshell-queue-input) | |
318 | (define-key eshell-mode-map [(meta control ?m)] 'eshell-queue-input) | |
319 | (define-key eshell-mode-map [(meta control ?l)] 'eshell-show-output) | |
320 | ||
321 | (set (make-local-variable 'eshell-command-prefix) | |
322 | (make-symbol "eshell-command-prefix")) | |
323 | (fset eshell-command-prefix (make-sparse-keymap)) | |
324 | (set (make-local-variable 'eshell-command-map) | |
325 | (symbol-function eshell-command-prefix)) | |
326 | (define-key eshell-mode-map [(control ?c)] eshell-command-prefix) | |
327 | ||
b4bd214e JW |
328 | ;; without this, find-tag complains about read-only text being |
329 | ;; modified | |
330 | (if (eq (key-binding [(meta ?.)]) 'find-tag) | |
331 | (define-key eshell-mode-map [(meta ?.)] 'eshell-find-tag)) | |
26b4dc84 | 332 | (define-key eshell-command-map [(meta ?o)] 'eshell-mark-output) |
79cf8e80 | 333 | (define-key eshell-command-map [(meta ?d)] 'eshell-toggle-direct-send) |
26b4dc84 GM |
334 | |
335 | (define-key eshell-command-map [(control ?a)] 'eshell-bol) | |
336 | (define-key eshell-command-map [(control ?b)] 'eshell-backward-argument) | |
337 | (define-key eshell-command-map [(control ?e)] 'eshell-show-maximum-output) | |
338 | (define-key eshell-command-map [(control ?f)] 'eshell-forward-argument) | |
339 | (define-key eshell-command-map [return] 'eshell-copy-old-input) | |
340 | (define-key eshell-command-map [(control ?m)] 'eshell-copy-old-input) | |
341 | (define-key eshell-command-map [(control ?o)] 'eshell-kill-output) | |
342 | (define-key eshell-command-map [(control ?r)] 'eshell-show-output) | |
343 | (define-key eshell-command-map [(control ?t)] 'eshell-truncate-buffer) | |
344 | (define-key eshell-command-map [(control ?u)] 'eshell-kill-input) | |
345 | (define-key eshell-command-map [(control ?w)] 'backward-kill-word) | |
b4bd214e | 346 | (define-key eshell-command-map [(control ?y)] 'eshell-repeat-argument) |
26b4dc84 GM |
347 | |
348 | (setq local-abbrev-table eshell-mode-abbrev-table) | |
349 | (set-syntax-table eshell-mode-syntax-table) | |
350 | ||
351 | (set (make-local-variable 'dired-directory) default-directory) | |
352 | (set (make-local-variable 'list-buffers-directory) | |
353 | (expand-file-name default-directory)) | |
354 | ||
355 | ;; always set the tab width to 8 in Eshell buffers, since external | |
356 | ;; commands which do their own formatting almost always expect this | |
357 | (set (make-local-variable 'tab-width) 8) | |
358 | ||
b4bd214e JW |
359 | ;; don't ever use auto-fill in Eshell buffers |
360 | (setq auto-fill-function nil) | |
361 | ||
26b4dc84 GM |
362 | ;; always display everything from a return value |
363 | (if (boundp 'print-length) | |
364 | (set (make-local-variable 'print-length) nil)) | |
365 | (if (boundp 'print-level) | |
366 | (set (make-local-variable 'print-level) nil)) | |
367 | ||
368 | ;; set require-final-newline to nil; otherwise, all redirected | |
369 | ;; output will end with a newline, whether or not the source | |
370 | ;; indicated it! | |
371 | (set (make-local-variable 'require-final-newline) nil) | |
372 | ||
373 | (set (make-local-variable 'max-lisp-eval-depth) | |
374 | (max 3000 max-lisp-eval-depth)) | |
375 | (set (make-local-variable 'max-specpdl-size) | |
376 | (max 6000 max-lisp-eval-depth)) | |
377 | ||
378 | (set (make-local-variable 'eshell-last-input-start) (point-marker)) | |
379 | (set (make-local-variable 'eshell-last-input-end) (point-marker)) | |
380 | (set (make-local-variable 'eshell-last-output-start) (point-marker)) | |
381 | (set (make-local-variable 'eshell-last-output-end) (point-marker)) | |
382 | (set (make-local-variable 'eshell-last-output-block-begin) (point)) | |
383 | ||
48e889be | 384 | (let ((modules-list (copy-sequence eshell-modules-list))) |
26b4dc84 GM |
385 | (make-local-variable 'eshell-modules-list) |
386 | (setq eshell-modules-list modules-list)) | |
387 | ||
388 | ;; load extension modules into memory. This will cause any global | |
389 | ;; variables they define to be visible, since some of the core | |
390 | ;; modules sometimes take advantage of their functionality if used. | |
391 | (eshell-for module eshell-modules-list | |
392 | (let ((module-fullname (symbol-name module)) | |
393 | module-shortname) | |
394 | (if (string-match "^eshell-\\(.*\\)" module-fullname) | |
395 | (setq module-shortname | |
396 | (concat "em-" (match-string 1 module-fullname)))) | |
397 | (unless module-shortname | |
398 | (error "Invalid Eshell module name: %s" module-fullname)) | |
399 | (unless (featurep (intern module-shortname)) | |
400 | (load module-shortname)))) | |
401 | ||
402 | (unless (file-exists-p eshell-directory-name) | |
403 | (eshell-make-private-directory eshell-directory-name t)) | |
404 | ||
405 | ;; load core Eshell modules for this session | |
406 | (eshell-for module (eshell-subgroups 'eshell) | |
407 | (run-hooks (intern-soft (concat (symbol-name module) | |
408 | "-load-hook")))) | |
409 | ||
410 | ;; load extension modules for this session | |
411 | (eshell-for module eshell-modules-list | |
412 | (let ((load-hook (intern-soft (concat (symbol-name module) | |
413 | "-load-hook")))) | |
414 | (if (and load-hook (boundp load-hook)) | |
415 | (run-hooks load-hook)))) | |
416 | ||
79cf8e80 JW |
417 | (if eshell-send-direct-to-subprocesses |
418 | (add-hook 'pre-command-hook 'eshell-intercept-commands t t)) | |
419 | ||
420 | (if eshell-scroll-to-bottom-on-input | |
421 | (add-hook 'pre-command-hook 'eshell-preinput-scroll-to-bottom t t)) | |
26b4dc84 GM |
422 | |
423 | (when eshell-scroll-show-maximum-output | |
424 | (set (make-local-variable 'scroll-conservatively) 1000)) | |
425 | ||
426 | (when eshell-status-in-modeline | |
26b4dc84 | 427 | (add-hook 'eshell-pre-command-hook 'eshell-command-started nil t) |
26b4dc84 GM |
428 | (add-hook 'eshell-post-command-hook 'eshell-command-finished nil t)) |
429 | ||
26b4dc84 GM |
430 | (add-hook 'kill-buffer-hook |
431 | (function | |
432 | (lambda () | |
433 | (run-hooks 'eshell-exit-hook))) t t) | |
434 | ||
435 | (if eshell-first-time-p | |
436 | (run-hooks 'eshell-first-time-mode-hook)) | |
5c3066b8 | 437 | (run-mode-hooks 'eshell-mode-hook) |
26b4dc84 GM |
438 | (run-hooks 'eshell-post-command-hook)) |
439 | ||
440 | (put 'eshell-mode 'mode-class 'special) | |
441 | ||
442 | (eshell-deftest mode major-mode | |
443 | "Major mode is correct" | |
444 | (eq major-mode 'eshell-mode)) | |
445 | ||
446 | (eshell-deftest mode eshell-mode-variable | |
447 | "`eshell-mode' is true" | |
448 | (eq eshell-mode t)) | |
449 | ||
450 | (eshell-deftest var window-height | |
451 | "LINES equals window height" | |
dace60cf JW |
452 | (let ((eshell-stringify-t t)) |
453 | (eshell-command-result-p "= $LINES (window-height)" "t\n"))) | |
26b4dc84 GM |
454 | |
455 | (defun eshell-command-started () | |
456 | "Indicate in the modeline that a command has started." | |
457 | (setq eshell-command-running-string "**") | |
458 | (force-mode-line-update)) | |
459 | ||
460 | (defun eshell-command-finished () | |
461 | "Indicate in the modeline that a command has finished." | |
462 | (setq eshell-command-running-string "--") | |
463 | (force-mode-line-update)) | |
464 | ||
465 | (eshell-deftest mode command-running-p | |
466 | "Modeline shows no command running" | |
a3269bc4 | 467 | (or (featurep 'xemacs) |
26b4dc84 GM |
468 | (not eshell-status-in-modeline) |
469 | (and (memq 'eshell-command-running-string mode-line-format) | |
470 | (equal eshell-command-running-string "--")))) | |
471 | ||
472 | ;;; Internal Functions: | |
473 | ||
79cf8e80 JW |
474 | (defun eshell-toggle-direct-send () |
475 | (interactive) | |
476 | (if eshell-send-direct-to-subprocesses | |
477 | (progn | |
478 | (setq eshell-send-direct-to-subprocesses nil) | |
479 | (remove-hook 'pre-command-hook 'eshell-intercept-commands t) | |
480 | (message "Sending subprocess input on RET")) | |
481 | (setq eshell-send-direct-to-subprocesses t) | |
482 | (add-hook 'pre-command-hook 'eshell-intercept-commands t t) | |
483 | (message "Sending subprocess input directly"))) | |
484 | ||
485 | (defun eshell-self-insert-command (N) | |
486 | (interactive "i") | |
487 | (process-send-string | |
488 | (eshell-interactive-process) | |
489 | (char-to-string (if (symbolp last-command-char) | |
490 | (get last-command-char 'ascii-character) | |
491 | last-command-char)))) | |
492 | ||
493 | (defun eshell-intercept-commands () | |
494 | (when (and (eshell-interactive-process) | |
495 | (not (and (integerp last-input-event) | |
496 | (memq last-input-event '(?\C-x ?\C-c))))) | |
497 | (let ((possible-events (where-is-internal this-command)) | |
498 | (name (symbol-name this-command)) | |
499 | (intercept t)) | |
500 | ;; Assume that any multikey combination which does NOT target an | |
501 | ;; Eshell command, is a combo the user wants invoked rather than | |
502 | ;; sent to the underlying subprocess. | |
503 | (unless (and (> (length name) 7) | |
504 | (equal (substring name 0 7) "eshell-")) | |
505 | (while possible-events | |
506 | (if (> (length (car possible-events)) 1) | |
507 | (setq intercept nil possible-events nil) | |
508 | (setq possible-events (cdr possible-events))))) | |
509 | (if intercept | |
510 | (setq this-command 'eshell-self-insert-command))))) | |
511 | ||
b4bd214e JW |
512 | (defun eshell-find-tag (&optional tagname next-p regexp-p) |
513 | "A special version of `find-tag' that ignores read-onlyness." | |
514 | (interactive) | |
ca7aae91 | 515 | (require 'etags) |
b4bd214e | 516 | (let ((inhibit-read-only t) |
8c6b1d83 JW |
517 | (no-default (eobp)) |
518 | (find-tag-default-function 'ignore)) | |
5f0fe8f1 RS |
519 | (with-no-warnings |
520 | (setq tagname (car (find-tag-interactive "Find tag: ")))) | |
b4bd214e JW |
521 | (find-tag tagname next-p regexp-p))) |
522 | ||
26b4dc84 GM |
523 | (defun eshell-move-argument (limit func property arg) |
524 | "Move forward ARG arguments." | |
525 | (catch 'eshell-incomplete | |
526 | (eshell-parse-arguments (save-excursion (eshell-bol) (point)) | |
527 | (line-end-position))) | |
b4bd214e JW |
528 | (let ((pos (save-excursion |
529 | (funcall func 1) | |
530 | (while (and (> arg 0) (/= (point) limit)) | |
531 | (if (get-text-property (point) property) | |
532 | (setq arg (1- arg))) | |
533 | (if (> arg 0) | |
534 | (funcall func 1))) | |
535 | (point)))) | |
26b4dc84 GM |
536 | (goto-char pos) |
537 | (if (and (eq func 'forward-char) | |
538 | (= (1+ pos) limit)) | |
539 | (forward-char 1)))) | |
540 | ||
541 | (eshell-deftest arg forward-arg | |
542 | "Move across command arguments" | |
543 | (eshell-insert-command "echo $(+ 1 (- 4 3)) \"alpha beta\" file" 'ignore) | |
544 | (let ((here (point)) begin valid) | |
545 | (eshell-bol) | |
546 | (setq begin (point)) | |
547 | (eshell-forward-argument 4) | |
548 | (setq valid (= here (point))) | |
549 | (eshell-backward-argument 4) | |
550 | (prog1 | |
551 | (and valid (= begin (point))) | |
552 | (eshell-bol) | |
553 | (delete-region (point) (point-max))))) | |
554 | ||
555 | (defun eshell-forward-argument (&optional arg) | |
556 | "Move forward ARG arguments." | |
557 | (interactive "p") | |
558 | (eshell-move-argument (point-max) 'forward-char 'arg-end arg)) | |
559 | ||
560 | (defun eshell-backward-argument (&optional arg) | |
561 | "Move backward ARG arguments." | |
562 | (interactive "p") | |
563 | (eshell-move-argument (point-min) 'backward-char 'arg-begin arg)) | |
564 | ||
b4bd214e JW |
565 | (defun eshell-repeat-argument (&optional arg) |
566 | (interactive "p") | |
567 | (let ((begin (save-excursion | |
568 | (eshell-backward-argument arg) | |
569 | (point)))) | |
570 | (kill-ring-save begin (point)) | |
571 | (yank))) | |
572 | ||
26b4dc84 GM |
573 | (defun eshell-bol () |
574 | "Goes to the beginning of line, then skips past the prompt, if any." | |
575 | (interactive) | |
576 | (beginning-of-line) | |
577 | (and eshell-skip-prompt-function | |
578 | (funcall eshell-skip-prompt-function))) | |
579 | ||
580 | (defsubst eshell-push-command-mark () | |
581 | "Push a mark at the end of the last input text." | |
582 | (push-mark (1- eshell-last-input-end) t)) | |
583 | ||
584 | (custom-add-option 'eshell-pre-command-hook 'eshell-push-command-mark) | |
585 | ||
586 | (defsubst eshell-goto-input-start () | |
587 | "Goto the start of the last command input. | |
588 | Putting this function on `eshell-pre-command-hook' will mimic Plan 9's | |
589 | 9term behavior." | |
590 | (goto-char eshell-last-input-start)) | |
591 | ||
592 | (custom-add-option 'eshell-pre-command-hook 'eshell-push-command-mark) | |
593 | ||
594 | (defsubst eshell-interactive-print (string) | |
595 | "Print STRING to the eshell display buffer." | |
596 | (eshell-output-filter nil string)) | |
597 | ||
598 | (defsubst eshell-begin-on-new-line () | |
599 | "This function outputs a newline if not at beginning of line." | |
600 | (save-excursion | |
601 | (goto-char eshell-last-output-end) | |
602 | (or (bolp) | |
603 | (eshell-interactive-print "\n")))) | |
604 | ||
605 | (defsubst eshell-reset (&optional no-hooks) | |
606 | "Output a prompt on a new line, aborting any current input. | |
607 | If NO-HOOKS is non-nil, then `eshell-post-command-hook' won't be run." | |
608 | (goto-char (point-max)) | |
609 | (setq eshell-last-input-start (point-marker) | |
610 | eshell-last-input-end (point-marker) | |
611 | eshell-last-output-start (point-marker) | |
612 | eshell-last-output-block-begin (point) | |
613 | eshell-last-output-end (point-marker)) | |
614 | (eshell-begin-on-new-line) | |
615 | (unless no-hooks | |
616 | (run-hooks 'eshell-post-command-hook) | |
617 | (goto-char (point-max)))) | |
618 | ||
619 | (defun eshell-parse-command-input (beg end &optional args) | |
620 | "Parse the command input from BEG to END. | |
621 | The difference is that `eshell-parse-command' expects a complete | |
622 | command string (and will error if it doesn't get one), whereas this | |
623 | function will inform the caller whether more input is required. | |
624 | ||
625 | If nil is returned, more input is necessary (probably because a | |
626 | multi-line input string wasn't terminated properly). Otherwise, it | |
627 | will return the parsed command." | |
b4bd214e JW |
628 | (let (delim command) |
629 | (if (setq delim | |
630 | (catch 'eshell-incomplete | |
631 | (ignore | |
632 | (setq command (eshell-parse-command (cons beg end) | |
633 | args t))))) | |
634 | (ignore | |
635 | (message "Expecting completion of delimeter %c ..." | |
636 | (if (listp delim) | |
637 | (car delim) | |
638 | delim))) | |
26b4dc84 GM |
639 | command))) |
640 | ||
641 | (defun eshell-update-markers (pmark) | |
642 | "Update the input and output markers relative to point and PMARK." | |
643 | (set-marker eshell-last-input-start pmark) | |
644 | (set-marker eshell-last-input-end (point)) | |
645 | (set-marker eshell-last-output-end (point))) | |
646 | ||
647 | (defun eshell-queue-input (&optional use-region) | |
648 | "Queue the current input text for execution by Eshell. | |
649 | Particularly, don't send the text to the current process, even if it's | |
650 | waiting for input." | |
651 | (interactive "P") | |
652 | (eshell-send-input use-region t)) | |
653 | ||
654 | (eshell-deftest mode queue-input | |
655 | "Queue command input" | |
656 | (eshell-insert-command "sleep 2") | |
657 | (eshell-insert-command "echo alpha" 'eshell-queue-input) | |
658 | (let ((count 10)) | |
659 | (while (and eshell-current-command | |
660 | (> count 0)) | |
661 | (sit-for 1 0) | |
662 | (setq count (1- count)))) | |
663 | (eshell-match-result "alpha\n")) | |
664 | ||
665 | (defun eshell-send-input (&optional use-region queue-p no-newline) | |
e94dae7f | 666 | "Send the input received to Eshell for parsing and processing. |
26b4dc84 GM |
667 | After `eshell-last-output-end', sends all text from that marker to |
668 | point as input. Before that marker, calls `eshell-get-old-input' to | |
669 | retrieve old input, copies it to the end of the buffer, and sends it. | |
670 | ||
671 | If USE-REGION is non-nil, the current region (between point and mark) | |
672 | will be used as input. | |
673 | ||
674 | If QUEUE-P is non-nil, input will be queued until the next prompt, | |
675 | rather than sent to the currently active process. If no process, the | |
676 | input is processed immediately. | |
677 | ||
678 | If NO-NEWLINE is non-nil, the input is sent without an implied final | |
679 | newline." | |
680 | (interactive "P") | |
681 | ;; Note that the input string does not include its terminal newline. | |
682 | (let ((proc-running-p (and (eshell-interactive-process) | |
683 | (not queue-p))) | |
684 | (inhibit-point-motion-hooks t) | |
685 | after-change-functions) | |
686 | (unless (and proc-running-p | |
687 | (not (eq (process-status | |
688 | (eshell-interactive-process)) 'run))) | |
689 | (if (or proc-running-p | |
690 | (>= (point) eshell-last-output-end)) | |
691 | (goto-char (point-max)) | |
692 | (let ((copy (eshell-get-old-input use-region))) | |
693 | (goto-char eshell-last-output-end) | |
694 | (insert-and-inherit copy))) | |
79cf8e80 JW |
695 | (unless (or no-newline |
696 | (and eshell-send-direct-to-subprocesses | |
697 | proc-running-p)) | |
26b4dc84 GM |
698 | (insert-before-markers-and-inherit ?\n)) |
699 | (if proc-running-p | |
700 | (progn | |
701 | (eshell-update-markers eshell-last-output-end) | |
79cf8e80 JW |
702 | (if (or eshell-send-direct-to-subprocesses |
703 | (= eshell-last-input-start eshell-last-input-end)) | |
26b4dc84 GM |
704 | (unless no-newline |
705 | (process-send-string (eshell-interactive-process) "\n")) | |
706 | (process-send-region (eshell-interactive-process) | |
707 | eshell-last-input-start | |
708 | eshell-last-input-end))) | |
709 | (if (= eshell-last-output-end (point)) | |
710 | (run-hooks 'eshell-post-command-hook) | |
711 | (let (input) | |
712 | (eshell-condition-case err | |
713 | (progn | |
714 | (setq input (buffer-substring-no-properties | |
715 | eshell-last-output-end (1- (point)))) | |
716 | (run-hook-with-args 'eshell-expand-input-functions | |
717 | eshell-last-output-end (1- (point))) | |
718 | (let ((cmd (eshell-parse-command-input | |
719 | eshell-last-output-end (1- (point))))) | |
720 | (when cmd | |
721 | (eshell-update-markers eshell-last-output-end) | |
722 | (setq input (buffer-substring-no-properties | |
723 | eshell-last-input-start | |
724 | (1- eshell-last-input-end))) | |
725 | (run-hooks 'eshell-input-filter-functions) | |
726 | (and (catch 'eshell-terminal | |
727 | (ignore | |
dace60cf JW |
728 | (if (eshell-invoke-directly cmd input) |
729 | (eval cmd) | |
730 | (eshell-eval-command cmd input)))) | |
26b4dc84 GM |
731 | (eshell-life-is-too-much))))) |
732 | (quit | |
733 | (eshell-reset t) | |
734 | (run-hooks 'eshell-post-command-hook) | |
735 | (signal 'quit nil)) | |
736 | (error | |
737 | (eshell-reset t) | |
738 | (eshell-interactive-print | |
739 | (concat (error-message-string err) "\n")) | |
740 | (run-hooks 'eshell-post-command-hook) | |
741 | (insert-and-inherit input))))))))) | |
742 | ||
0c00c5ac JW |
743 | ; (eshell-deftest proc send-to-subprocess |
744 | ; "Send input to a subprocess" | |
745 | ; ;; jww (1999-12-06): what about when bc is unavailable? | |
746 | ; (if (not (eshell-search-path "bc")) | |
747 | ; t | |
748 | ; (eshell-insert-command "bc") | |
749 | ; (eshell-insert-command "1 + 2") | |
750 | ; (sit-for 1 0) | |
751 | ; (forward-line -1) | |
752 | ; (prog1 | |
753 | ; (looking-at "3\n") | |
754 | ; (eshell-insert-command "quit") | |
755 | ; (sit-for 1 0)))) | |
26b4dc84 GM |
756 | |
757 | (defsubst eshell-kill-new () | |
758 | "Add the last input text to the kill ring." | |
759 | (kill-ring-save eshell-last-input-start eshell-last-input-end)) | |
760 | ||
761 | (custom-add-option 'eshell-input-filter-functions 'eshell-kill-new) | |
762 | ||
763 | (defun eshell-output-filter (process string) | |
764 | "Send the output from PROCESS (STRING) to the interactive display. | |
765 | This is done after all necessary filtering has been done." | |
766 | (let ((oprocbuf (if process (process-buffer process) | |
767 | (current-buffer))) | |
768 | (inhibit-point-motion-hooks t) | |
769 | after-change-functions) | |
770 | (let ((functions eshell-preoutput-filter-functions)) | |
771 | (while (and functions string) | |
772 | (setq string (funcall (car functions) string)) | |
773 | (setq functions (cdr functions)))) | |
774 | (if (and string oprocbuf (buffer-name oprocbuf)) | |
d3204296 GM |
775 | (let (opoint obeg oend) |
776 | (with-current-buffer oprocbuf | |
777 | (setq opoint (point)) | |
778 | (setq obeg (point-min)) | |
779 | (setq oend (point-max)) | |
780 | (let ((buffer-read-only nil) | |
781 | (nchars (length string)) | |
782 | (ostart nil)) | |
783 | (widen) | |
784 | (goto-char eshell-last-output-end) | |
785 | (setq ostart (point)) | |
786 | (if (<= (point) opoint) | |
787 | (setq opoint (+ opoint nchars))) | |
788 | (if (< (point) obeg) | |
789 | (setq obeg (+ obeg nchars))) | |
790 | (if (<= (point) oend) | |
791 | (setq oend (+ oend nchars))) | |
792 | (insert-before-markers string) | |
793 | (if (= (window-start (selected-window)) (point)) | |
794 | (set-window-start (selected-window) | |
795 | (- (point) nchars))) | |
796 | (if (= (point) eshell-last-input-end) | |
797 | (set-marker eshell-last-input-end | |
798 | (- eshell-last-input-end nchars))) | |
799 | (set-marker eshell-last-output-start ostart) | |
800 | (set-marker eshell-last-output-end (point)) | |
801 | (force-mode-line-update)) | |
802 | (narrow-to-region obeg oend) | |
803 | (goto-char opoint) | |
804 | (eshell-run-output-filters)))))) | |
26b4dc84 GM |
805 | |
806 | (defun eshell-run-output-filters () | |
807 | "Run the `eshell-output-filter-functions' on the current output." | |
808 | (save-current-buffer | |
809 | (run-hooks 'eshell-output-filter-functions)) | |
810 | (setq eshell-last-output-block-begin | |
811 | (marker-position eshell-last-output-end))) | |
812 | ||
813 | ;;; jww (1999-10-23): this needs testing | |
814 | (defun eshell-preinput-scroll-to-bottom () | |
815 | "Go to the end of buffer in all windows showing it. | |
816 | Movement occurs if point in the selected window is not after the | |
817 | process mark, and `this-command' is an insertion command. Insertion | |
b7599623 | 818 | commands recognized are `self-insert-command', `yank', and |
26b4dc84 GM |
819 | `hilit-yank'. Depends on the value of |
820 | `eshell-scroll-to-bottom-on-input'. | |
821 | ||
822 | This function should be a pre-command hook." | |
823 | (if (memq this-command '(self-insert-command yank hilit-yank)) | |
824 | (let* ((selected (selected-window)) | |
825 | (current (current-buffer)) | |
826 | (scroll eshell-scroll-to-bottom-on-input)) | |
827 | (if (< (point) eshell-last-output-end) | |
828 | (if (eq scroll 'this) | |
829 | (goto-char (point-max)) | |
830 | (walk-windows | |
831 | (function | |
832 | (lambda (window) | |
833 | (when (and (eq (window-buffer window) current) | |
834 | (or (eq scroll t) (eq scroll 'all))) | |
835 | (select-window window) | |
836 | (goto-char (point-max)) | |
837 | (select-window selected)))) | |
838 | nil t)))))) | |
839 | ||
840 | ;;; jww (1999-10-23): this needs testing | |
841 | (defun eshell-postoutput-scroll-to-bottom () | |
842 | "Go to the end of buffer in all windows showing it. | |
843 | Does not scroll if the current line is the last line in the buffer. | |
844 | Depends on the value of `eshell-scroll-to-bottom-on-output' and | |
845 | `eshell-scroll-show-maximum-output'. | |
846 | ||
847 | This function should be in the list `eshell-output-filter-functions'." | |
848 | (let* ((selected (selected-window)) | |
849 | (current (current-buffer)) | |
850 | (scroll eshell-scroll-to-bottom-on-output)) | |
851 | (unwind-protect | |
852 | (walk-windows | |
853 | (function | |
854 | (lambda (window) | |
855 | (if (eq (window-buffer window) current) | |
856 | (progn | |
857 | (select-window window) | |
858 | (if (and (< (point) eshell-last-output-end) | |
859 | (or (eq scroll t) (eq scroll 'all) | |
860 | ;; Maybe user wants point to jump to end. | |
861 | (and (eq scroll 'this) | |
862 | (eq selected window)) | |
863 | (and (eq scroll 'others) | |
864 | (not (eq selected window))) | |
865 | ;; If point was at the end, keep it at end. | |
866 | (>= (point) eshell-last-output-start))) | |
867 | (goto-char eshell-last-output-end)) | |
868 | ;; Optionally scroll so that the text | |
869 | ;; ends at the bottom of the window. | |
870 | (if (and eshell-scroll-show-maximum-output | |
871 | (>= (point) eshell-last-output-end)) | |
872 | (save-excursion | |
873 | (goto-char (point-max)) | |
874 | (recenter -1))) | |
875 | (select-window selected))))) | |
876 | nil t) | |
877 | (set-buffer current)))) | |
878 | ||
26b4dc84 GM |
879 | (defun eshell-beginning-of-input () |
880 | "Return the location of the start of the previous input." | |
881 | eshell-last-input-start) | |
882 | ||
883 | (defun eshell-beginning-of-output () | |
884 | "Return the location of the end of the previous output block." | |
885 | eshell-last-input-end) | |
886 | ||
887 | (defun eshell-end-of-output () | |
888 | "Return the location of the end of the previous output block." | |
889 | (if (eshell-using-module 'eshell-prompt) | |
890 | eshell-last-output-start | |
891 | eshell-last-output-end)) | |
892 | ||
893 | (defun eshell-kill-output () | |
894 | "Kill all output from interpreter since last input. | |
895 | Does not delete the prompt." | |
896 | (interactive) | |
897 | (save-excursion | |
898 | (goto-char (eshell-beginning-of-output)) | |
899 | (insert "*** output flushed ***\n") | |
900 | (delete-region (point) (eshell-end-of-output)))) | |
901 | ||
902 | (eshell-deftest io flush-output | |
903 | "Flush previous output" | |
904 | (eshell-insert-command "echo alpha") | |
905 | (eshell-kill-output) | |
906 | (and (eshell-match-result (regexp-quote "*** output flushed ***\n")) | |
907 | (forward-line) | |
908 | (= (point) eshell-last-output-start))) | |
909 | ||
910 | (defun eshell-show-output (&optional arg) | |
911 | "Display start of this batch of interpreter output at top of window. | |
912 | Sets mark to the value of point when this command is run. | |
913 | With a prefix argument, narrows region to last command output." | |
914 | (interactive "P") | |
915 | (goto-char (eshell-beginning-of-output)) | |
916 | (set-window-start (selected-window) | |
917 | (save-excursion | |
918 | (goto-char (eshell-beginning-of-input)) | |
919 | (line-beginning-position))) | |
920 | (if arg | |
921 | (narrow-to-region (eshell-beginning-of-output) | |
922 | (eshell-end-of-output))) | |
923 | (eshell-end-of-output)) | |
924 | ||
925 | (defun eshell-mark-output (&optional arg) | |
926 | "Display start of this batch of interpreter output at top of window. | |
927 | Sets mark to the value of point when this command is run. | |
928 | With a prefix argument, narrows region to last command output." | |
929 | (interactive "P") | |
930 | (push-mark (eshell-show-output arg))) | |
931 | ||
932 | (defun eshell-kill-input () | |
933 | "Kill all text from last stuff output by interpreter to point." | |
934 | (interactive) | |
935 | (if (> (point) eshell-last-output-end) | |
936 | (kill-region eshell-last-output-end (point)) | |
937 | (let ((here (point))) | |
938 | (eshell-bol) | |
939 | (kill-region (point) here)))) | |
940 | ||
3e80ba3c RS |
941 | (defun eshell-show-maximum-output (&optional interactive) |
942 | "Put the end of the buffer at the bottom of the window. | |
943 | When run interactively, widen the buffer first." | |
944 | (interactive "p") | |
945 | (if interactive | |
26b4dc84 GM |
946 | (widen)) |
947 | (goto-char (point-max)) | |
948 | (recenter -1)) | |
949 | ||
950 | (defun eshell-get-old-input (&optional use-current-region) | |
951 | "Return the command input on the current line." | |
952 | (if use-current-region | |
953 | (buffer-substring (min (point) (mark)) | |
954 | (max (point) (mark))) | |
955 | (save-excursion | |
956 | (beginning-of-line) | |
957 | (and eshell-skip-prompt-function | |
958 | (funcall eshell-skip-prompt-function)) | |
959 | (let ((beg (point))) | |
960 | (end-of-line) | |
961 | (buffer-substring beg (point)))))) | |
962 | ||
963 | (defun eshell-copy-old-input () | |
964 | "Insert after prompt old input at point as new input to be edited." | |
965 | (interactive) | |
966 | (let ((input (eshell-get-old-input))) | |
967 | (goto-char eshell-last-output-end) | |
968 | (insert-and-inherit input))) | |
969 | ||
970 | (eshell-deftest mode run-old-command | |
971 | "Re-run an old command" | |
972 | (eshell-insert-command "echo alpha") | |
973 | (goto-char eshell-last-input-start) | |
974 | (string= (eshell-get-old-input) "echo alpha")) | |
975 | ||
976 | (defun eshell/exit () | |
977 | "Leave or kill the Eshell buffer, depending on `eshell-kill-on-exit'." | |
978 | (throw 'eshell-terminal t)) | |
979 | ||
980 | (defun eshell-life-is-too-much () | |
981 | "Kill the current buffer (or bury it). Good-bye Eshell." | |
982 | (interactive) | |
983 | (if (not eshell-kill-on-exit) | |
984 | (bury-buffer) | |
985 | (kill-buffer (current-buffer)))) | |
986 | ||
987 | (defun eshell-truncate-buffer () | |
988 | "Truncate the buffer to `eshell-buffer-maximum-lines'. | |
989 | This function could be on `eshell-output-filter-functions' or bound to | |
990 | a key." | |
991 | (interactive) | |
992 | (save-excursion | |
993 | (goto-char eshell-last-output-end) | |
994 | (let ((lines (count-lines 1 (point))) | |
995 | (inhibit-read-only t)) | |
996 | (forward-line (- eshell-buffer-maximum-lines)) | |
997 | (beginning-of-line) | |
998 | (let ((pos (point))) | |
999 | (if (bobp) | |
1000 | (if (interactive-p) | |
3e80ba3c | 1001 | (message "Buffer too short to truncate")) |
26b4dc84 GM |
1002 | (delete-region (point-min) (point)) |
1003 | (if (interactive-p) | |
1004 | (message "Truncated buffer from %d to %d lines (%.1fk freed)" | |
1005 | lines eshell-buffer-maximum-lines | |
1006 | (/ pos 1024.0)))))))) | |
1007 | ||
1008 | (custom-add-option 'eshell-output-filter-functions | |
1009 | 'eshell-truncate-buffer) | |
1010 | ||
a07c7ade | 1011 | (defun eshell-send-invisible (str) |
26b4dc84 GM |
1012 | "Read a string without echoing. |
1013 | Then send it to the process running in the current buffer." | |
1014 | (interactive "P") ; Defeat snooping via C-x ESC ESC | |
1015 | (let ((str (read-passwd | |
6b61353c | 1016 | (format "%s Password: " |
26b4dc84 GM |
1017 | (process-name (eshell-interactive-process)))))) |
1018 | (if (stringp str) | |
1019 | (process-send-string (eshell-interactive-process) | |
1020 | (concat str "\n")) | |
1021 | (message "Warning: text will be echoed")))) | |
1022 | ||
1023 | (defun eshell-watch-for-password-prompt () | |
1024 | "Prompt in the minibuffer for password and send without echoing. | |
a07c7ade | 1025 | This function uses `eshell-send-invisible' to read and send a password to the |
26b4dc84 GM |
1026 | buffer's process if STRING contains a password prompt defined by |
1027 | `eshell-password-prompt-regexp'. | |
1028 | ||
1029 | This function could be in the list `eshell-output-filter-functions'." | |
1030 | (when (eshell-interactive-process) | |
1031 | (save-excursion | |
1032 | (goto-char eshell-last-output-block-begin) | |
1033 | (beginning-of-line) | |
1034 | (if (re-search-forward eshell-password-prompt-regexp | |
1035 | eshell-last-output-end t) | |
a07c7ade | 1036 | (eshell-send-invisible nil))))) |
26b4dc84 GM |
1037 | |
1038 | (custom-add-option 'eshell-output-filter-functions | |
1039 | 'eshell-watch-for-password-prompt) | |
1040 | ||
1041 | (defun eshell-handle-control-codes () | |
1042 | "Act properly when certain control codes are seen." | |
1043 | (save-excursion | |
1044 | (let ((orig (point))) | |
1045 | (goto-char eshell-last-output-block-begin) | |
1046 | (unless (eolp) | |
1047 | (beginning-of-line)) | |
1048 | (while (< (point) eshell-last-output-end) | |
1049 | (let ((char (char-after))) | |
1050 | (cond | |
1051 | ((eq char ?\r) | |
1052 | (if (< (1+ (point)) eshell-last-output-end) | |
1053 | (if (memq (char-after (1+ (point))) | |
1054 | '(?\n ?\r)) | |
1055 | (delete-char 1) | |
1056 | (let ((end (1+ (point)))) | |
1057 | (beginning-of-line) | |
1058 | (delete-region (point) end))) | |
1059 | (add-text-properties (point) (1+ (point)) | |
1060 | '(invisible t)) | |
1061 | (forward-char))) | |
1062 | ((eq char ?\a) | |
1063 | (delete-char 1) | |
1064 | (beep)) | |
1065 | ((eq char ?\C-h) | |
1066 | (delete-backward-char 1) | |
1067 | (delete-char 1)) | |
1068 | (t | |
1069 | (forward-char)))))))) | |
1070 | ||
1071 | (custom-add-option 'eshell-output-filter-functions | |
1072 | 'eshell-handle-control-codes) | |
1073 | ||
1c979bff MH |
1074 | (defun eshell-handle-ansi-color () |
1075 | "Handle ANSI color codes." | |
2f42c75f | 1076 | (eval-and-compile (require 'ansi-color)) |
1c979bff MH |
1077 | (ansi-color-apply-on-region eshell-last-output-start |
1078 | eshell-last-output-end)) | |
1079 | ||
1080 | (custom-add-option 'eshell-output-filter-functions | |
1081 | 'eshell-handle-ansi-color) | |
1082 | ||
26b4dc84 GM |
1083 | ;;; Code: |
1084 | ||
cbee283d | 1085 | ;; arch-tag: ec65bc2b-da14-4547-81d3-a32af3a4dc57 |
26b4dc84 | 1086 | ;;; esh-mode.el ends here |