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60370d40 | 1 | ;;; esh-mode.el --- user interface |
26b4dc84 | 2 | |
db22de71 | 3 | ;; Copyright (C) 1999, 2000, 2001, 2004 Free Software Foundation |
26b4dc84 | 4 | |
7de5b421 GM |
5 | ;; Author: John Wiegley <johnw@gnu.org> |
6 | ||
26b4dc84 GM |
7 | ;; This file is part of GNU Emacs. |
8 | ||
9 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
10 | ;; it under the terms of the GNU General Public License as published by | |
11 | ;; the Free Software Foundation; either version 2, or (at your option) | |
12 | ;; any later version. | |
13 | ||
14 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
15 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | ;; GNU General Public License for more details. | |
18 | ||
19 | ;; You should have received a copy of the GNU General Public License | |
20 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
21 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | ;; Boston, MA 02111-1307, USA. | |
23 | ||
24 | (provide 'esh-mode) | |
25 | ||
26 | (eval-when-compile (require 'esh-maint)) | |
27 | ||
28 | (defgroup eshell-mode nil | |
29 | "This module contains code for handling input from the user." | |
30 | :tag "User interface" | |
31 | :group 'eshell) | |
32 | ||
33 | ;;; Commentary: | |
34 | ||
35 | ;; Basically, Eshell is used just like shell mode (<M-x shell>). The | |
36 | ;; keystrokes for navigating the buffer, and accessing the command | |
37 | ;; history, are identical. Unlike shell mode, however, Eshell mode's | |
38 | ;; governing process is Emacs itself. With shell mode, an inferior | |
39 | ;; shell process is executed that communicates with Emacs via comint | |
40 | ;; -- a mode for handling sub-process interaction. Eshell mode, on | |
41 | ;; the other hand, is a truly native Emacs shell. No subprocess are | |
42 | ;; invoked except the ones requested by the user at the prompt. | |
43 | ;; | |
44 | ;; After entering a command, use <RET> to invoke it ([Command | |
45 | ;; invocation]) . If there is a command on disk, it will be executed | |
46 | ;; as in a normal shell. If there is no command by that name on disk, | |
47 | ;; but a Lisp function with that name is defined, the Lisp function | |
48 | ;; will be called, using the arguments passed on the command line. | |
49 | ;; | |
50 | ;; Some of the other features of the command interaction mode are: | |
51 | ;; | |
52 | ;; @ <M-RET> can be used to accumulate further commands while a | |
53 | ;; command is currently running. Since all input is passed to the | |
54 | ;; subprocess being executed, there is no automatic input queueing | |
55 | ;; as there is with other shells. | |
56 | ;; | |
57 | ;; @ <C-c C-t> can be used to truncate the buffer if it grows too | |
58 | ;; large. | |
59 | ;; | |
60 | ;; @ <C-c C-r> will move point to the beginning of the output of the | |
61 | ;; last command. With a prefix argument, it will narrow to view | |
62 | ;; only that output. | |
63 | ;; | |
64 | ;; @ <C-c C-o> will delete the output from the last command. | |
65 | ;; | |
66 | ;; @ <C-c C-f> will move forward a complete shell argument. | |
67 | ;; | |
68 | ;; @ <C-c C-b> will move backward a complete shell argument. | |
69 | ||
70 | (require 'esh-module) | |
71 | (require 'esh-cmd) | |
72 | (require 'esh-io) | |
73 | (require 'esh-var) | |
74 | ||
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 | |
167 | '(eshell-handle-control-codes | |
168 | eshell-watch-for-password-prompt) | |
169 | "*Functions to call before output is displayed. | |
170 | These functions are only called for output that is displayed | |
171 | interactively, and not for output which is redirected." | |
172 | :type 'hook | |
173 | :group 'eshell-mode) | |
174 | ||
175 | (defcustom eshell-preoutput-filter-functions nil | |
176 | "*Functions to call before output is inserted into the buffer. | |
177 | These functions get one argument, a string containing the text to be | |
178 | inserted. They return the string as it should be inserted." | |
179 | :type 'hook | |
180 | :group 'eshell-mode) | |
181 | ||
182 | (defcustom eshell-password-prompt-regexp | |
dace60cf | 183 | "[Pp]ass\\(word\\|phrase\\).*:\\s *\\'" |
26b4dc84 GM |
184 | "*Regexp matching prompts for passwords in the inferior process. |
185 | This is used by `eshell-watch-for-password-prompt'." | |
186 | :type 'regexp | |
187 | :group 'eshell-mode) | |
188 | ||
189 | (defcustom eshell-skip-prompt-function nil | |
190 | "*A function called from beginning of line to skip the prompt." | |
6a44f20f | 191 | :type '(choice (const nil) function) |
26b4dc84 GM |
192 | :group 'eshell-mode) |
193 | ||
194 | (defcustom eshell-status-in-modeline t | |
195 | "*If non-nil, let the user know a command is running in the modeline." | |
196 | :type 'boolean | |
197 | :group 'eshell-mode) | |
198 | ||
26b4dc84 GM |
199 | (defvar eshell-first-time-p t |
200 | "A variable which is non-nil the first time Eshell is loaded.") | |
201 | ||
202 | ;; Internal Variables: | |
203 | ||
204 | ;; these are only set to `nil' initially for the sake of the | |
205 | ;; byte-compiler, when compiling other files which `require' this one | |
206 | (defvar eshell-mode nil) | |
207 | (defvar eshell-mode-map nil) | |
208 | (defvar eshell-command-running-string "--") | |
209 | (defvar eshell-command-map nil) | |
210 | (defvar eshell-command-prefix nil) | |
211 | (defvar eshell-last-input-start nil) | |
212 | (defvar eshell-last-input-end nil) | |
213 | (defvar eshell-last-output-start nil) | |
214 | (defvar eshell-last-output-block-begin nil) | |
215 | (defvar eshell-last-output-end nil) | |
216 | ||
217 | (defvar eshell-currently-handling-window nil) | |
218 | (defvar eshell-mode-syntax-table nil) | |
219 | (defvar eshell-mode-abbrev-table nil) | |
220 | ||
221 | (define-abbrev-table 'eshell-mode-abbrev-table ()) | |
222 | ||
223 | (eval-when-compile | |
224 | (unless (eshell-under-xemacs-p) | |
225 | (defalias 'characterp 'ignore) | |
226 | (defalias 'char-int 'ignore))) | |
227 | ||
228 | (if (not eshell-mode-syntax-table) | |
229 | (let ((i 0)) | |
230 | (setq eshell-mode-syntax-table (make-syntax-table)) | |
231 | (while (< i ?0) | |
232 | (modify-syntax-entry i "_ " eshell-mode-syntax-table) | |
233 | (setq i (1+ i))) | |
234 | (setq i (1+ ?9)) | |
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 ?a) | |
240 | (modify-syntax-entry i "_ " eshell-mode-syntax-table) | |
241 | (setq i (1+ i))) | |
242 | (setq i (1+ ?z)) | |
243 | (while (< i 128) | |
244 | (modify-syntax-entry i "_ " eshell-mode-syntax-table) | |
245 | (setq i (1+ i))) | |
246 | (modify-syntax-entry ? " " eshell-mode-syntax-table) | |
247 | (modify-syntax-entry ?\t " " eshell-mode-syntax-table) | |
248 | (modify-syntax-entry ?\f " " eshell-mode-syntax-table) | |
249 | (modify-syntax-entry ?\n "> " eshell-mode-syntax-table) | |
250 | ;; Give CR the same syntax as newline, for selective-display. | |
251 | (modify-syntax-entry ?\^m "> " eshell-mode-syntax-table) | |
252 | ;;; (modify-syntax-entry ?\; "< " eshell-mode-syntax-table) | |
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 | ;; Used to be singlequote; changed for flonums. | |
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 | (modify-syntax-entry ?\{ "(} " eshell-mode-syntax-table) | |
266 | (modify-syntax-entry ?\} "){ " eshell-mode-syntax-table) | |
267 | (modify-syntax-entry ?\[ "(] " eshell-mode-syntax-table) | |
268 | (modify-syntax-entry ?\] ")[ " eshell-mode-syntax-table) | |
269 | ;; All non-word multibyte characters should be `symbol'. | |
270 | (if (eshell-under-xemacs-p) | |
271 | (map-char-table | |
272 | (function | |
273 | (lambda (key val) | |
274 | (and (characterp key) | |
275 | (>= (char-int key) 256) | |
276 | (/= (char-syntax key) ?w) | |
277 | (modify-syntax-entry key "_ " | |
278 | eshell-mode-syntax-table)))) | |
279 | (standard-syntax-table)) | |
280 | (map-char-table | |
281 | (function | |
282 | (lambda (key val) | |
283 | (and (>= key 256) | |
284 | (/= (char-syntax key) ?w) | |
285 | (modify-syntax-entry key "_ " | |
286 | eshell-mode-syntax-table)))) | |
287 | (standard-syntax-table))))) | |
288 | ||
289 | ;;; User Functions: | |
290 | ||
291 | ;;;###autoload | |
292 | (defun eshell-mode () | |
293 | "Emacs shell interactive mode. | |
294 | ||
295 | \\{eshell-mode-map}" | |
296 | (kill-all-local-variables) | |
297 | ||
298 | (setq major-mode 'eshell-mode) | |
299 | (setq mode-name "EShell") | |
300 | (set (make-local-variable 'eshell-mode) t) | |
301 | ||
302 | (make-local-variable 'eshell-mode-map) | |
303 | (setq eshell-mode-map (make-sparse-keymap)) | |
304 | (use-local-map eshell-mode-map) | |
305 | ||
306 | (when eshell-status-in-modeline | |
307 | (make-local-variable 'eshell-command-running-string) | |
48e889be | 308 | (let ((fmt (copy-sequence mode-line-format))) |
26b4dc84 GM |
309 | (make-local-variable 'mode-line-format) |
310 | (setq mode-line-format fmt)) | |
311 | (let ((modeline (memq 'mode-line-modified mode-line-format))) | |
312 | (if modeline | |
313 | (setcar modeline 'eshell-command-running-string)))) | |
314 | ||
315 | (define-key eshell-mode-map [return] 'eshell-send-input) | |
316 | (define-key eshell-mode-map [(control ?m)] 'eshell-send-input) | |
317 | (define-key eshell-mode-map [(control ?j)] 'eshell-send-input) | |
318 | (define-key eshell-mode-map [(meta return)] 'eshell-queue-input) | |
319 | (define-key eshell-mode-map [(meta control ?m)] 'eshell-queue-input) | |
320 | (define-key eshell-mode-map [(meta control ?l)] 'eshell-show-output) | |
321 | ||
322 | (set (make-local-variable 'eshell-command-prefix) | |
323 | (make-symbol "eshell-command-prefix")) | |
324 | (fset eshell-command-prefix (make-sparse-keymap)) | |
325 | (set (make-local-variable 'eshell-command-map) | |
326 | (symbol-function eshell-command-prefix)) | |
327 | (define-key eshell-mode-map [(control ?c)] eshell-command-prefix) | |
328 | ||
b4bd214e JW |
329 | ;; without this, find-tag complains about read-only text being |
330 | ;; modified | |
331 | (if (eq (key-binding [(meta ?.)]) 'find-tag) | |
332 | (define-key eshell-mode-map [(meta ?.)] 'eshell-find-tag)) | |
26b4dc84 | 333 | (define-key eshell-command-map [(meta ?o)] 'eshell-mark-output) |
79cf8e80 | 334 | (define-key eshell-command-map [(meta ?d)] 'eshell-toggle-direct-send) |
26b4dc84 GM |
335 | |
336 | (define-key eshell-command-map [(control ?a)] 'eshell-bol) | |
337 | (define-key eshell-command-map [(control ?b)] 'eshell-backward-argument) | |
338 | (define-key eshell-command-map [(control ?e)] 'eshell-show-maximum-output) | |
339 | (define-key eshell-command-map [(control ?f)] 'eshell-forward-argument) | |
340 | (define-key eshell-command-map [return] 'eshell-copy-old-input) | |
341 | (define-key eshell-command-map [(control ?m)] 'eshell-copy-old-input) | |
342 | (define-key eshell-command-map [(control ?o)] 'eshell-kill-output) | |
343 | (define-key eshell-command-map [(control ?r)] 'eshell-show-output) | |
344 | (define-key eshell-command-map [(control ?t)] 'eshell-truncate-buffer) | |
345 | (define-key eshell-command-map [(control ?u)] 'eshell-kill-input) | |
346 | (define-key eshell-command-map [(control ?w)] 'backward-kill-word) | |
b4bd214e | 347 | (define-key eshell-command-map [(control ?y)] 'eshell-repeat-argument) |
26b4dc84 GM |
348 | |
349 | (setq local-abbrev-table eshell-mode-abbrev-table) | |
350 | (set-syntax-table eshell-mode-syntax-table) | |
351 | ||
352 | (set (make-local-variable 'dired-directory) default-directory) | |
353 | (set (make-local-variable 'list-buffers-directory) | |
354 | (expand-file-name default-directory)) | |
355 | ||
356 | ;; always set the tab width to 8 in Eshell buffers, since external | |
357 | ;; commands which do their own formatting almost always expect this | |
358 | (set (make-local-variable 'tab-width) 8) | |
359 | ||
b4bd214e JW |
360 | ;; don't ever use auto-fill in Eshell buffers |
361 | (setq auto-fill-function nil) | |
362 | ||
26b4dc84 GM |
363 | ;; always display everything from a return value |
364 | (if (boundp 'print-length) | |
365 | (set (make-local-variable 'print-length) nil)) | |
366 | (if (boundp 'print-level) | |
367 | (set (make-local-variable 'print-level) nil)) | |
368 | ||
369 | ;; set require-final-newline to nil; otherwise, all redirected | |
370 | ;; output will end with a newline, whether or not the source | |
371 | ;; indicated it! | |
372 | (set (make-local-variable 'require-final-newline) nil) | |
373 | ||
374 | (set (make-local-variable 'max-lisp-eval-depth) | |
375 | (max 3000 max-lisp-eval-depth)) | |
376 | (set (make-local-variable 'max-specpdl-size) | |
377 | (max 6000 max-lisp-eval-depth)) | |
378 | ||
379 | (set (make-local-variable 'eshell-last-input-start) (point-marker)) | |
380 | (set (make-local-variable 'eshell-last-input-end) (point-marker)) | |
381 | (set (make-local-variable 'eshell-last-output-start) (point-marker)) | |
382 | (set (make-local-variable 'eshell-last-output-end) (point-marker)) | |
383 | (set (make-local-variable 'eshell-last-output-block-begin) (point)) | |
384 | ||
48e889be | 385 | (let ((modules-list (copy-sequence eshell-modules-list))) |
26b4dc84 GM |
386 | (make-local-variable 'eshell-modules-list) |
387 | (setq eshell-modules-list modules-list)) | |
388 | ||
389 | ;; load extension modules into memory. This will cause any global | |
390 | ;; variables they define to be visible, since some of the core | |
391 | ;; modules sometimes take advantage of their functionality if used. | |
392 | (eshell-for module eshell-modules-list | |
393 | (let ((module-fullname (symbol-name module)) | |
394 | module-shortname) | |
395 | (if (string-match "^eshell-\\(.*\\)" module-fullname) | |
396 | (setq module-shortname | |
397 | (concat "em-" (match-string 1 module-fullname)))) | |
398 | (unless module-shortname | |
399 | (error "Invalid Eshell module name: %s" module-fullname)) | |
400 | (unless (featurep (intern module-shortname)) | |
401 | (load module-shortname)))) | |
402 | ||
403 | (unless (file-exists-p eshell-directory-name) | |
404 | (eshell-make-private-directory eshell-directory-name t)) | |
405 | ||
406 | ;; load core Eshell modules for this session | |
407 | (eshell-for module (eshell-subgroups 'eshell) | |
408 | (run-hooks (intern-soft (concat (symbol-name module) | |
409 | "-load-hook")))) | |
410 | ||
411 | ;; load extension modules for this session | |
412 | (eshell-for module eshell-modules-list | |
413 | (let ((load-hook (intern-soft (concat (symbol-name module) | |
414 | "-load-hook")))) | |
415 | (if (and load-hook (boundp load-hook)) | |
416 | (run-hooks load-hook)))) | |
417 | ||
79cf8e80 JW |
418 | (if eshell-send-direct-to-subprocesses |
419 | (add-hook 'pre-command-hook 'eshell-intercept-commands t t)) | |
420 | ||
421 | (if eshell-scroll-to-bottom-on-input | |
422 | (add-hook 'pre-command-hook 'eshell-preinput-scroll-to-bottom t t)) | |
26b4dc84 GM |
423 | |
424 | (when eshell-scroll-show-maximum-output | |
425 | (set (make-local-variable 'scroll-conservatively) 1000)) | |
426 | ||
427 | (when eshell-status-in-modeline | |
26b4dc84 | 428 | (add-hook 'eshell-pre-command-hook 'eshell-command-started nil t) |
26b4dc84 GM |
429 | (add-hook 'eshell-post-command-hook 'eshell-command-finished nil t)) |
430 | ||
26b4dc84 GM |
431 | (add-hook 'kill-buffer-hook |
432 | (function | |
433 | (lambda () | |
434 | (run-hooks 'eshell-exit-hook))) t t) | |
435 | ||
436 | (if eshell-first-time-p | |
437 | (run-hooks 'eshell-first-time-mode-hook)) | |
5c3066b8 | 438 | (run-mode-hooks 'eshell-mode-hook) |
26b4dc84 GM |
439 | (run-hooks 'eshell-post-command-hook)) |
440 | ||
441 | (put 'eshell-mode 'mode-class 'special) | |
442 | ||
443 | (eshell-deftest mode major-mode | |
444 | "Major mode is correct" | |
445 | (eq major-mode 'eshell-mode)) | |
446 | ||
447 | (eshell-deftest mode eshell-mode-variable | |
448 | "`eshell-mode' is true" | |
449 | (eq eshell-mode t)) | |
450 | ||
451 | (eshell-deftest var window-height | |
452 | "LINES equals window height" | |
dace60cf JW |
453 | (let ((eshell-stringify-t t)) |
454 | (eshell-command-result-p "= $LINES (window-height)" "t\n"))) | |
26b4dc84 GM |
455 | |
456 | (defun eshell-command-started () | |
457 | "Indicate in the modeline that a command has started." | |
458 | (setq eshell-command-running-string "**") | |
459 | (force-mode-line-update)) | |
460 | ||
461 | (defun eshell-command-finished () | |
462 | "Indicate in the modeline that a command has finished." | |
463 | (setq eshell-command-running-string "--") | |
464 | (force-mode-line-update)) | |
465 | ||
466 | (eshell-deftest mode command-running-p | |
467 | "Modeline shows no command running" | |
468 | (or (eshell-under-xemacs-p) | |
469 | (not eshell-status-in-modeline) | |
470 | (and (memq 'eshell-command-running-string mode-line-format) | |
471 | (equal eshell-command-running-string "--")))) | |
472 | ||
473 | ;;; Internal Functions: | |
474 | ||
79cf8e80 JW |
475 | (defun eshell-toggle-direct-send () |
476 | (interactive) | |
477 | (if eshell-send-direct-to-subprocesses | |
478 | (progn | |
479 | (setq eshell-send-direct-to-subprocesses nil) | |
480 | (remove-hook 'pre-command-hook 'eshell-intercept-commands t) | |
481 | (message "Sending subprocess input on RET")) | |
482 | (setq eshell-send-direct-to-subprocesses t) | |
483 | (add-hook 'pre-command-hook 'eshell-intercept-commands t t) | |
484 | (message "Sending subprocess input directly"))) | |
485 | ||
486 | (defun eshell-self-insert-command (N) | |
487 | (interactive "i") | |
488 | (process-send-string | |
489 | (eshell-interactive-process) | |
490 | (char-to-string (if (symbolp last-command-char) | |
491 | (get last-command-char 'ascii-character) | |
492 | last-command-char)))) | |
493 | ||
494 | (defun eshell-intercept-commands () | |
495 | (when (and (eshell-interactive-process) | |
496 | (not (and (integerp last-input-event) | |
497 | (memq last-input-event '(?\C-x ?\C-c))))) | |
498 | (let ((possible-events (where-is-internal this-command)) | |
499 | (name (symbol-name this-command)) | |
500 | (intercept t)) | |
501 | ;; Assume that any multikey combination which does NOT target an | |
502 | ;; Eshell command, is a combo the user wants invoked rather than | |
503 | ;; sent to the underlying subprocess. | |
504 | (unless (and (> (length name) 7) | |
505 | (equal (substring name 0 7) "eshell-")) | |
506 | (while possible-events | |
507 | (if (> (length (car possible-events)) 1) | |
508 | (setq intercept nil possible-events nil) | |
509 | (setq possible-events (cdr possible-events))))) | |
510 | (if intercept | |
511 | (setq this-command 'eshell-self-insert-command))))) | |
512 | ||
b4bd214e JW |
513 | (defun eshell-find-tag (&optional tagname next-p regexp-p) |
514 | "A special version of `find-tag' that ignores read-onlyness." | |
515 | (interactive) | |
ca7aae91 | 516 | (require 'etags) |
b4bd214e | 517 | (let ((inhibit-read-only t) |
8c6b1d83 JW |
518 | (no-default (eobp)) |
519 | (find-tag-default-function 'ignore)) | |
5f0fe8f1 RS |
520 | (with-no-warnings |
521 | (setq tagname (car (find-tag-interactive "Find tag: ")))) | |
b4bd214e JW |
522 | (find-tag tagname next-p regexp-p))) |
523 | ||
26b4dc84 GM |
524 | (defun eshell-move-argument (limit func property arg) |
525 | "Move forward ARG arguments." | |
526 | (catch 'eshell-incomplete | |
527 | (eshell-parse-arguments (save-excursion (eshell-bol) (point)) | |
528 | (line-end-position))) | |
b4bd214e JW |
529 | (let ((pos (save-excursion |
530 | (funcall func 1) | |
531 | (while (and (> arg 0) (/= (point) limit)) | |
532 | (if (get-text-property (point) property) | |
533 | (setq arg (1- arg))) | |
534 | (if (> arg 0) | |
535 | (funcall func 1))) | |
536 | (point)))) | |
26b4dc84 GM |
537 | (goto-char pos) |
538 | (if (and (eq func 'forward-char) | |
539 | (= (1+ pos) limit)) | |
540 | (forward-char 1)))) | |
541 | ||
542 | (eshell-deftest arg forward-arg | |
543 | "Move across command arguments" | |
544 | (eshell-insert-command "echo $(+ 1 (- 4 3)) \"alpha beta\" file" 'ignore) | |
545 | (let ((here (point)) begin valid) | |
546 | (eshell-bol) | |
547 | (setq begin (point)) | |
548 | (eshell-forward-argument 4) | |
549 | (setq valid (= here (point))) | |
550 | (eshell-backward-argument 4) | |
551 | (prog1 | |
552 | (and valid (= begin (point))) | |
553 | (eshell-bol) | |
554 | (delete-region (point) (point-max))))) | |
555 | ||
556 | (defun eshell-forward-argument (&optional arg) | |
557 | "Move forward ARG arguments." | |
558 | (interactive "p") | |
559 | (eshell-move-argument (point-max) 'forward-char 'arg-end arg)) | |
560 | ||
561 | (defun eshell-backward-argument (&optional arg) | |
562 | "Move backward ARG arguments." | |
563 | (interactive "p") | |
564 | (eshell-move-argument (point-min) 'backward-char 'arg-begin arg)) | |
565 | ||
b4bd214e JW |
566 | (defun eshell-repeat-argument (&optional arg) |
567 | (interactive "p") | |
568 | (let ((begin (save-excursion | |
569 | (eshell-backward-argument arg) | |
570 | (point)))) | |
571 | (kill-ring-save begin (point)) | |
572 | (yank))) | |
573 | ||
26b4dc84 GM |
574 | (defun eshell-bol () |
575 | "Goes to the beginning of line, then skips past the prompt, if any." | |
576 | (interactive) | |
577 | (beginning-of-line) | |
578 | (and eshell-skip-prompt-function | |
579 | (funcall eshell-skip-prompt-function))) | |
580 | ||
581 | (defsubst eshell-push-command-mark () | |
582 | "Push a mark at the end of the last input text." | |
583 | (push-mark (1- eshell-last-input-end) t)) | |
584 | ||
585 | (custom-add-option 'eshell-pre-command-hook 'eshell-push-command-mark) | |
586 | ||
587 | (defsubst eshell-goto-input-start () | |
588 | "Goto the start of the last command input. | |
589 | Putting this function on `eshell-pre-command-hook' will mimic Plan 9's | |
590 | 9term behavior." | |
591 | (goto-char eshell-last-input-start)) | |
592 | ||
593 | (custom-add-option 'eshell-pre-command-hook 'eshell-push-command-mark) | |
594 | ||
595 | (defsubst eshell-interactive-print (string) | |
596 | "Print STRING to the eshell display buffer." | |
597 | (eshell-output-filter nil string)) | |
598 | ||
599 | (defsubst eshell-begin-on-new-line () | |
600 | "This function outputs a newline if not at beginning of line." | |
601 | (save-excursion | |
602 | (goto-char eshell-last-output-end) | |
603 | (or (bolp) | |
604 | (eshell-interactive-print "\n")))) | |
605 | ||
606 | (defsubst eshell-reset (&optional no-hooks) | |
607 | "Output a prompt on a new line, aborting any current input. | |
608 | If NO-HOOKS is non-nil, then `eshell-post-command-hook' won't be run." | |
609 | (goto-char (point-max)) | |
610 | (setq eshell-last-input-start (point-marker) | |
611 | eshell-last-input-end (point-marker) | |
612 | eshell-last-output-start (point-marker) | |
613 | eshell-last-output-block-begin (point) | |
614 | eshell-last-output-end (point-marker)) | |
615 | (eshell-begin-on-new-line) | |
616 | (unless no-hooks | |
617 | (run-hooks 'eshell-post-command-hook) | |
618 | (goto-char (point-max)))) | |
619 | ||
620 | (defun eshell-parse-command-input (beg end &optional args) | |
621 | "Parse the command input from BEG to END. | |
622 | The difference is that `eshell-parse-command' expects a complete | |
623 | command string (and will error if it doesn't get one), whereas this | |
624 | function will inform the caller whether more input is required. | |
625 | ||
626 | If nil is returned, more input is necessary (probably because a | |
627 | multi-line input string wasn't terminated properly). Otherwise, it | |
628 | will return the parsed command." | |
b4bd214e JW |
629 | (let (delim command) |
630 | (if (setq delim | |
631 | (catch 'eshell-incomplete | |
632 | (ignore | |
633 | (setq command (eshell-parse-command (cons beg end) | |
634 | args t))))) | |
635 | (ignore | |
636 | (message "Expecting completion of delimeter %c ..." | |
637 | (if (listp delim) | |
638 | (car delim) | |
639 | delim))) | |
26b4dc84 GM |
640 | command))) |
641 | ||
642 | (defun eshell-update-markers (pmark) | |
643 | "Update the input and output markers relative to point and PMARK." | |
644 | (set-marker eshell-last-input-start pmark) | |
645 | (set-marker eshell-last-input-end (point)) | |
646 | (set-marker eshell-last-output-end (point))) | |
647 | ||
648 | (defun eshell-queue-input (&optional use-region) | |
649 | "Queue the current input text for execution by Eshell. | |
650 | Particularly, don't send the text to the current process, even if it's | |
651 | waiting for input." | |
652 | (interactive "P") | |
653 | (eshell-send-input use-region t)) | |
654 | ||
655 | (eshell-deftest mode queue-input | |
656 | "Queue command input" | |
657 | (eshell-insert-command "sleep 2") | |
658 | (eshell-insert-command "echo alpha" 'eshell-queue-input) | |
659 | (let ((count 10)) | |
660 | (while (and eshell-current-command | |
661 | (> count 0)) | |
662 | (sit-for 1 0) | |
663 | (setq count (1- count)))) | |
664 | (eshell-match-result "alpha\n")) | |
665 | ||
666 | (defun eshell-send-input (&optional use-region queue-p no-newline) | |
e94dae7f | 667 | "Send the input received to Eshell for parsing and processing. |
26b4dc84 GM |
668 | After `eshell-last-output-end', sends all text from that marker to |
669 | point as input. Before that marker, calls `eshell-get-old-input' to | |
670 | retrieve old input, copies it to the end of the buffer, and sends it. | |
671 | ||
672 | If USE-REGION is non-nil, the current region (between point and mark) | |
673 | will be used as input. | |
674 | ||
675 | If QUEUE-P is non-nil, input will be queued until the next prompt, | |
676 | rather than sent to the currently active process. If no process, the | |
677 | input is processed immediately. | |
678 | ||
679 | If NO-NEWLINE is non-nil, the input is sent without an implied final | |
680 | newline." | |
681 | (interactive "P") | |
682 | ;; Note that the input string does not include its terminal newline. | |
683 | (let ((proc-running-p (and (eshell-interactive-process) | |
684 | (not queue-p))) | |
685 | (inhibit-point-motion-hooks t) | |
686 | after-change-functions) | |
687 | (unless (and proc-running-p | |
688 | (not (eq (process-status | |
689 | (eshell-interactive-process)) 'run))) | |
690 | (if (or proc-running-p | |
691 | (>= (point) eshell-last-output-end)) | |
692 | (goto-char (point-max)) | |
693 | (let ((copy (eshell-get-old-input use-region))) | |
694 | (goto-char eshell-last-output-end) | |
695 | (insert-and-inherit copy))) | |
79cf8e80 JW |
696 | (unless (or no-newline |
697 | (and eshell-send-direct-to-subprocesses | |
698 | proc-running-p)) | |
26b4dc84 GM |
699 | (insert-before-markers-and-inherit ?\n)) |
700 | (if proc-running-p | |
701 | (progn | |
702 | (eshell-update-markers eshell-last-output-end) | |
79cf8e80 JW |
703 | (if (or eshell-send-direct-to-subprocesses |
704 | (= eshell-last-input-start eshell-last-input-end)) | |
26b4dc84 GM |
705 | (unless no-newline |
706 | (process-send-string (eshell-interactive-process) "\n")) | |
707 | (process-send-region (eshell-interactive-process) | |
708 | eshell-last-input-start | |
709 | eshell-last-input-end))) | |
710 | (if (= eshell-last-output-end (point)) | |
711 | (run-hooks 'eshell-post-command-hook) | |
712 | (let (input) | |
713 | (eshell-condition-case err | |
714 | (progn | |
715 | (setq input (buffer-substring-no-properties | |
716 | eshell-last-output-end (1- (point)))) | |
717 | (run-hook-with-args 'eshell-expand-input-functions | |
718 | eshell-last-output-end (1- (point))) | |
719 | (let ((cmd (eshell-parse-command-input | |
720 | eshell-last-output-end (1- (point))))) | |
721 | (when cmd | |
722 | (eshell-update-markers eshell-last-output-end) | |
723 | (setq input (buffer-substring-no-properties | |
724 | eshell-last-input-start | |
725 | (1- eshell-last-input-end))) | |
726 | (run-hooks 'eshell-input-filter-functions) | |
727 | (and (catch 'eshell-terminal | |
728 | (ignore | |
dace60cf JW |
729 | (if (eshell-invoke-directly cmd input) |
730 | (eval cmd) | |
731 | (eshell-eval-command cmd input)))) | |
26b4dc84 GM |
732 | (eshell-life-is-too-much))))) |
733 | (quit | |
734 | (eshell-reset t) | |
735 | (run-hooks 'eshell-post-command-hook) | |
736 | (signal 'quit nil)) | |
737 | (error | |
738 | (eshell-reset t) | |
739 | (eshell-interactive-print | |
740 | (concat (error-message-string err) "\n")) | |
741 | (run-hooks 'eshell-post-command-hook) | |
742 | (insert-and-inherit input))))))))) | |
743 | ||
0c00c5ac JW |
744 | ; (eshell-deftest proc send-to-subprocess |
745 | ; "Send input to a subprocess" | |
746 | ; ;; jww (1999-12-06): what about when bc is unavailable? | |
747 | ; (if (not (eshell-search-path "bc")) | |
748 | ; t | |
749 | ; (eshell-insert-command "bc") | |
750 | ; (eshell-insert-command "1 + 2") | |
751 | ; (sit-for 1 0) | |
752 | ; (forward-line -1) | |
753 | ; (prog1 | |
754 | ; (looking-at "3\n") | |
755 | ; (eshell-insert-command "quit") | |
756 | ; (sit-for 1 0)))) | |
26b4dc84 GM |
757 | |
758 | (defsubst eshell-kill-new () | |
759 | "Add the last input text to the kill ring." | |
760 | (kill-ring-save eshell-last-input-start eshell-last-input-end)) | |
761 | ||
762 | (custom-add-option 'eshell-input-filter-functions 'eshell-kill-new) | |
763 | ||
764 | (defun eshell-output-filter (process string) | |
765 | "Send the output from PROCESS (STRING) to the interactive display. | |
766 | This is done after all necessary filtering has been done." | |
767 | (let ((oprocbuf (if process (process-buffer process) | |
768 | (current-buffer))) | |
769 | (inhibit-point-motion-hooks t) | |
770 | after-change-functions) | |
771 | (let ((functions eshell-preoutput-filter-functions)) | |
772 | (while (and functions string) | |
773 | (setq string (funcall (car functions) string)) | |
774 | (setq functions (cdr functions)))) | |
775 | (if (and string oprocbuf (buffer-name oprocbuf)) | |
776 | (let ((obuf (current-buffer)) | |
777 | opoint obeg oend) | |
778 | (set-buffer oprocbuf) | |
779 | (setq opoint (point)) | |
780 | (setq obeg (point-min)) | |
781 | (setq oend (point-max)) | |
782 | (let ((buffer-read-only nil) | |
783 | (nchars (length string)) | |
784 | (ostart nil)) | |
785 | (widen) | |
786 | (goto-char eshell-last-output-end) | |
787 | (setq ostart (point)) | |
788 | (if (<= (point) opoint) | |
789 | (setq opoint (+ opoint nchars))) | |
790 | (if (< (point) obeg) | |
791 | (setq obeg (+ obeg nchars))) | |
792 | (if (<= (point) oend) | |
793 | (setq oend (+ oend nchars))) | |
794 | (insert-before-markers string) | |
795 | (if (= (window-start (selected-window)) (point)) | |
796 | (set-window-start (selected-window) | |
797 | (- (point) nchars))) | |
798 | (if (= (point) eshell-last-input-end) | |
799 | (set-marker eshell-last-input-end | |
800 | (- eshell-last-input-end nchars))) | |
801 | (set-marker eshell-last-output-start ostart) | |
802 | (set-marker eshell-last-output-end (point)) | |
803 | (force-mode-line-update)) | |
804 | (narrow-to-region obeg oend) | |
805 | (goto-char opoint) | |
806 | (eshell-run-output-filters) | |
807 | (set-buffer obuf))))) | |
808 | ||
809 | (defun eshell-run-output-filters () | |
810 | "Run the `eshell-output-filter-functions' on the current output." | |
811 | (save-current-buffer | |
812 | (run-hooks 'eshell-output-filter-functions)) | |
813 | (setq eshell-last-output-block-begin | |
814 | (marker-position eshell-last-output-end))) | |
815 | ||
816 | ;;; jww (1999-10-23): this needs testing | |
817 | (defun eshell-preinput-scroll-to-bottom () | |
818 | "Go to the end of buffer in all windows showing it. | |
819 | Movement occurs if point in the selected window is not after the | |
820 | process mark, and `this-command' is an insertion command. Insertion | |
b7599623 | 821 | commands recognized are `self-insert-command', `yank', and |
26b4dc84 GM |
822 | `hilit-yank'. Depends on the value of |
823 | `eshell-scroll-to-bottom-on-input'. | |
824 | ||
825 | This function should be a pre-command hook." | |
826 | (if (memq this-command '(self-insert-command yank hilit-yank)) | |
827 | (let* ((selected (selected-window)) | |
828 | (current (current-buffer)) | |
829 | (scroll eshell-scroll-to-bottom-on-input)) | |
830 | (if (< (point) eshell-last-output-end) | |
831 | (if (eq scroll 'this) | |
832 | (goto-char (point-max)) | |
833 | (walk-windows | |
834 | (function | |
835 | (lambda (window) | |
836 | (when (and (eq (window-buffer window) current) | |
837 | (or (eq scroll t) (eq scroll 'all))) | |
838 | (select-window window) | |
839 | (goto-char (point-max)) | |
840 | (select-window selected)))) | |
841 | nil t)))))) | |
842 | ||
843 | ;;; jww (1999-10-23): this needs testing | |
844 | (defun eshell-postoutput-scroll-to-bottom () | |
845 | "Go to the end of buffer in all windows showing it. | |
846 | Does not scroll if the current line is the last line in the buffer. | |
847 | Depends on the value of `eshell-scroll-to-bottom-on-output' and | |
848 | `eshell-scroll-show-maximum-output'. | |
849 | ||
850 | This function should be in the list `eshell-output-filter-functions'." | |
851 | (let* ((selected (selected-window)) | |
852 | (current (current-buffer)) | |
853 | (scroll eshell-scroll-to-bottom-on-output)) | |
854 | (unwind-protect | |
855 | (walk-windows | |
856 | (function | |
857 | (lambda (window) | |
858 | (if (eq (window-buffer window) current) | |
859 | (progn | |
860 | (select-window window) | |
861 | (if (and (< (point) eshell-last-output-end) | |
862 | (or (eq scroll t) (eq scroll 'all) | |
863 | ;; Maybe user wants point to jump to end. | |
864 | (and (eq scroll 'this) | |
865 | (eq selected window)) | |
866 | (and (eq scroll 'others) | |
867 | (not (eq selected window))) | |
868 | ;; If point was at the end, keep it at end. | |
869 | (>= (point) eshell-last-output-start))) | |
870 | (goto-char eshell-last-output-end)) | |
871 | ;; Optionally scroll so that the text | |
872 | ;; ends at the bottom of the window. | |
873 | (if (and eshell-scroll-show-maximum-output | |
874 | (>= (point) eshell-last-output-end)) | |
875 | (save-excursion | |
876 | (goto-char (point-max)) | |
877 | (recenter -1))) | |
878 | (select-window selected))))) | |
879 | nil t) | |
880 | (set-buffer current)))) | |
881 | ||
882 | (custom-add-option 'eshell-output-filter-functions | |
883 | 'eshell-postoutput-scroll-to-bottom) | |
884 | ||
885 | (defun eshell-beginning-of-input () | |
886 | "Return the location of the start of the previous input." | |
887 | eshell-last-input-start) | |
888 | ||
889 | (defun eshell-beginning-of-output () | |
890 | "Return the location of the end of the previous output block." | |
891 | eshell-last-input-end) | |
892 | ||
893 | (defun eshell-end-of-output () | |
894 | "Return the location of the end of the previous output block." | |
895 | (if (eshell-using-module 'eshell-prompt) | |
896 | eshell-last-output-start | |
897 | eshell-last-output-end)) | |
898 | ||
899 | (defun eshell-kill-output () | |
900 | "Kill all output from interpreter since last input. | |
901 | Does not delete the prompt." | |
902 | (interactive) | |
903 | (save-excursion | |
904 | (goto-char (eshell-beginning-of-output)) | |
905 | (insert "*** output flushed ***\n") | |
906 | (delete-region (point) (eshell-end-of-output)))) | |
907 | ||
908 | (eshell-deftest io flush-output | |
909 | "Flush previous output" | |
910 | (eshell-insert-command "echo alpha") | |
911 | (eshell-kill-output) | |
912 | (and (eshell-match-result (regexp-quote "*** output flushed ***\n")) | |
913 | (forward-line) | |
914 | (= (point) eshell-last-output-start))) | |
915 | ||
916 | (defun eshell-show-output (&optional arg) | |
917 | "Display start of this batch of interpreter output at top of window. | |
918 | Sets mark to the value of point when this command is run. | |
919 | With a prefix argument, narrows region to last command output." | |
920 | (interactive "P") | |
921 | (goto-char (eshell-beginning-of-output)) | |
922 | (set-window-start (selected-window) | |
923 | (save-excursion | |
924 | (goto-char (eshell-beginning-of-input)) | |
925 | (line-beginning-position))) | |
926 | (if arg | |
927 | (narrow-to-region (eshell-beginning-of-output) | |
928 | (eshell-end-of-output))) | |
929 | (eshell-end-of-output)) | |
930 | ||
931 | (defun eshell-mark-output (&optional arg) | |
932 | "Display start of this batch of interpreter output at top of window. | |
933 | Sets mark to the value of point when this command is run. | |
934 | With a prefix argument, narrows region to last command output." | |
935 | (interactive "P") | |
936 | (push-mark (eshell-show-output arg))) | |
937 | ||
938 | (defun eshell-kill-input () | |
939 | "Kill all text from last stuff output by interpreter to point." | |
940 | (interactive) | |
941 | (if (> (point) eshell-last-output-end) | |
942 | (kill-region eshell-last-output-end (point)) | |
943 | (let ((here (point))) | |
944 | (eshell-bol) | |
945 | (kill-region (point) here)))) | |
946 | ||
3e80ba3c RS |
947 | (defun eshell-show-maximum-output (&optional interactive) |
948 | "Put the end of the buffer at the bottom of the window. | |
949 | When run interactively, widen the buffer first." | |
950 | (interactive "p") | |
951 | (if interactive | |
26b4dc84 GM |
952 | (widen)) |
953 | (goto-char (point-max)) | |
954 | (recenter -1)) | |
955 | ||
956 | (defun eshell-get-old-input (&optional use-current-region) | |
957 | "Return the command input on the current line." | |
958 | (if use-current-region | |
959 | (buffer-substring (min (point) (mark)) | |
960 | (max (point) (mark))) | |
961 | (save-excursion | |
962 | (beginning-of-line) | |
963 | (and eshell-skip-prompt-function | |
964 | (funcall eshell-skip-prompt-function)) | |
965 | (let ((beg (point))) | |
966 | (end-of-line) | |
967 | (buffer-substring beg (point)))))) | |
968 | ||
969 | (defun eshell-copy-old-input () | |
970 | "Insert after prompt old input at point as new input to be edited." | |
971 | (interactive) | |
972 | (let ((input (eshell-get-old-input))) | |
973 | (goto-char eshell-last-output-end) | |
974 | (insert-and-inherit input))) | |
975 | ||
976 | (eshell-deftest mode run-old-command | |
977 | "Re-run an old command" | |
978 | (eshell-insert-command "echo alpha") | |
979 | (goto-char eshell-last-input-start) | |
980 | (string= (eshell-get-old-input) "echo alpha")) | |
981 | ||
982 | (defun eshell/exit () | |
983 | "Leave or kill the Eshell buffer, depending on `eshell-kill-on-exit'." | |
984 | (throw 'eshell-terminal t)) | |
985 | ||
986 | (defun eshell-life-is-too-much () | |
987 | "Kill the current buffer (or bury it). Good-bye Eshell." | |
988 | (interactive) | |
989 | (if (not eshell-kill-on-exit) | |
990 | (bury-buffer) | |
991 | (kill-buffer (current-buffer)))) | |
992 | ||
993 | (defun eshell-truncate-buffer () | |
994 | "Truncate the buffer to `eshell-buffer-maximum-lines'. | |
995 | This function could be on `eshell-output-filter-functions' or bound to | |
996 | a key." | |
997 | (interactive) | |
998 | (save-excursion | |
999 | (goto-char eshell-last-output-end) | |
1000 | (let ((lines (count-lines 1 (point))) | |
1001 | (inhibit-read-only t)) | |
1002 | (forward-line (- eshell-buffer-maximum-lines)) | |
1003 | (beginning-of-line) | |
1004 | (let ((pos (point))) | |
1005 | (if (bobp) | |
1006 | (if (interactive-p) | |
3e80ba3c | 1007 | (message "Buffer too short to truncate")) |
26b4dc84 GM |
1008 | (delete-region (point-min) (point)) |
1009 | (if (interactive-p) | |
1010 | (message "Truncated buffer from %d to %d lines (%.1fk freed)" | |
1011 | lines eshell-buffer-maximum-lines | |
1012 | (/ pos 1024.0)))))))) | |
1013 | ||
1014 | (custom-add-option 'eshell-output-filter-functions | |
1015 | 'eshell-truncate-buffer) | |
1016 | ||
a07c7ade | 1017 | (defun eshell-send-invisible (str) |
26b4dc84 GM |
1018 | "Read a string without echoing. |
1019 | Then send it to the process running in the current buffer." | |
1020 | (interactive "P") ; Defeat snooping via C-x ESC ESC | |
1021 | (let ((str (read-passwd | |
db22de71 | 1022 | (format "%s Password: " |
26b4dc84 GM |
1023 | (process-name (eshell-interactive-process)))))) |
1024 | (if (stringp str) | |
1025 | (process-send-string (eshell-interactive-process) | |
1026 | (concat str "\n")) | |
1027 | (message "Warning: text will be echoed")))) | |
1028 | ||
1029 | (defun eshell-watch-for-password-prompt () | |
1030 | "Prompt in the minibuffer for password and send without echoing. | |
a07c7ade | 1031 | This function uses `eshell-send-invisible' to read and send a password to the |
26b4dc84 GM |
1032 | buffer's process if STRING contains a password prompt defined by |
1033 | `eshell-password-prompt-regexp'. | |
1034 | ||
1035 | This function could be in the list `eshell-output-filter-functions'." | |
1036 | (when (eshell-interactive-process) | |
1037 | (save-excursion | |
1038 | (goto-char eshell-last-output-block-begin) | |
1039 | (beginning-of-line) | |
1040 | (if (re-search-forward eshell-password-prompt-regexp | |
1041 | eshell-last-output-end t) | |
a07c7ade | 1042 | (eshell-send-invisible nil))))) |
26b4dc84 GM |
1043 | |
1044 | (custom-add-option 'eshell-output-filter-functions | |
1045 | 'eshell-watch-for-password-prompt) | |
1046 | ||
1047 | (defun eshell-handle-control-codes () | |
1048 | "Act properly when certain control codes are seen." | |
1049 | (save-excursion | |
1050 | (let ((orig (point))) | |
1051 | (goto-char eshell-last-output-block-begin) | |
1052 | (unless (eolp) | |
1053 | (beginning-of-line)) | |
1054 | (while (< (point) eshell-last-output-end) | |
1055 | (let ((char (char-after))) | |
1056 | (cond | |
1057 | ((eq char ?\r) | |
1058 | (if (< (1+ (point)) eshell-last-output-end) | |
1059 | (if (memq (char-after (1+ (point))) | |
1060 | '(?\n ?\r)) | |
1061 | (delete-char 1) | |
1062 | (let ((end (1+ (point)))) | |
1063 | (beginning-of-line) | |
1064 | (delete-region (point) end))) | |
1065 | (add-text-properties (point) (1+ (point)) | |
1066 | '(invisible t)) | |
1067 | (forward-char))) | |
1068 | ((eq char ?\a) | |
1069 | (delete-char 1) | |
1070 | (beep)) | |
1071 | ((eq char ?\C-h) | |
1072 | (delete-backward-char 1) | |
1073 | (delete-char 1)) | |
1074 | (t | |
1075 | (forward-char)))))))) | |
1076 | ||
1077 | (custom-add-option 'eshell-output-filter-functions | |
1078 | 'eshell-handle-control-codes) | |
1079 | ||
1080 | ;;; Code: | |
1081 | ||
ab5796a9 | 1082 | ;;; arch-tag: ec65bc2b-da14-4547-81d3-a32af3a4dc57 |
26b4dc84 | 1083 | ;;; esh-mode.el ends here |