1;;; term.el --- general command interpreter in a window stuff
2
3;; Copyright (C) 1988, 1990, 1992, 1994, 1995, 2001, 2002, 2003,
4;;   2004, 2005, 2006, 2007 Free Software Foundation, Inc.
5
6;; Author: Per Bothner <per@bothner.com>
7;; Maintainer: Dan Nicolaescu <dann@ics.uci.edu>, Per Bothner <per@bothner.com>
8;; Based on comint mode written by: Olin Shivers <shivers@cs.cmu.edu>
9;; Keywords: processes
10
11;; This file is part of GNU Emacs.
12
13;; GNU Emacs is free software; you can redistribute it and/or modify
14;; it under the terms of the GNU General Public License as published by
15;; the Free Software Foundation; either version 2, or (at your option)
16;; any later version.
17
18;; GNU Emacs is distributed in the hope that it will be useful,
19;; but WITHOUT ANY WARRANTY; without even the implied warranty of
20;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21;; GNU General Public License for more details.
22
23;; You should have received a copy of the GNU General Public License
24;; along with GNU Emacs; see the file COPYING.  If not, write to the
25;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
26;; Boston, MA 02110-1301, USA.
27
28;;; Marck 13 2001
29;;; Fixes for CJK support by Yong Lu <lyongu@yahoo.com>.
30
31;;; Dir/Hostname tracking and ANSI colorization by
32;;; Marco Melgazzi <marco@techie.com>.
33
34;;; To see what I've modified and where it came from search for '-mm'
35
36;;; Commentary:
37
38;;; Speed considerations and a few caveats
39;;; --------------------------------------
40;;;
41;;; While the message passing and the colorization surely introduce some
42;;; overhead this has became so small that IMHO is surely outweighted by
43;;; the benefits you get but, as usual, YMMV
44;;;
45;;; Important caveat, when deciding the cursor/'grey keys' keycodes I had to
46;;; make a choice: on my Linux box this choice allows me to run all the
47;;; ncurses applications without problems but make these keys
48;;; uncomprehensible to all the cursesX programs.  Your mileage may vary so
49;;; you may consider changing the default 'emulation'.  Just search for this
50;;; piece of code and modify it as you like:
51;;;
52;;; ;; Which would be better:  "\e[A" or "\eOA"? readline accepts either.
53;;; ;; For my configuration it's definitely better \eOA but YMMV.  -mm
54;;; ;; For example: vi works with \eOA while elm wants \e[A ...
55;;; (defun term-send-up    () (interactive) (term-send-raw-string "\eOA"))
56;;; (defun term-send-down  () (interactive) (term-send-raw-string "\eOB"))
57;;; (defun term-send-right () (interactive) (term-send-raw-string "\eOC"))
58;;; (defun term-send-left  () (interactive) (term-send-raw-string "\eOD"))
59;;;
60;;;
61;;; IMPORTANT: additions & changes
62;;; ------------------------------
63;;;
64;;;  With this enhanced ansi-term.el you will get a reliable mechanism of
65;;; directory/username/host tracking: the only drawback is that you will
66;;; have to modify your shell start-up script.  It's worth it, believe me :).
67;;;
68;;; When you rlogin/su/telnet and the account you access has a modified
69;;; startup script, you will be able to access the remote files as usual
70;;; with C-x C-f, if it's needed you will have to enter a password,
71;;; otherwise the file should get loaded straight away.
72;;;
73;;; This is useful even if you work only on one host: it often happens that,
74;;; for maintenance reasons, you have to edit files 'as root': before
75;;; patching term.el, I su-ed in a term.el buffer and used vi :), now I
76;;; simply do a C-x C-f and, via ange-ftp, the file is automatically loaded
77;;; 'as-root'.  ( If you don't want to enter the root password every time you
78;;; can put it in your .netrc: note that this is -not- advisable if you're
79;;; connected to the internet or if somebody else works on your workstation!)
80;;;
81;;; If you use wu-ftpd you can use some of its features to avoid root ftp
82;;; access to the rest of the world: just put in /etc/ftphosts something like
83;;;
84;;; # Local access
85;;; allow	root		127.0.0.1
86;;;
87;;; # By default nobody can't do anything
88;;; deny	root		*
89;;;
90;;;
91;;;             ----------------------------------------
92;;;
93;;;  If, instead of 'term', you call 'ansi-term', you get multiple term
94;;; buffers, after every new call ansi-term opens a new *ansi-term*<xx> window,
95;;; where <xx> is, as usual, a number...
96;;;
97;;;             ----------------------------------------
98;;;
99;;;  With the term-buffer-maximum-size you can finally decide how many
100;;; scrollback lines to keep: its default is 2048 but you can change it as
101;;; usual.
102;;;
103;;;             ----------------------------------------
104;;;
105;;;
106;;;  ANSI colorization should work well, I've decided to limit the interpreter
107;;; to five outstanding commands (like ESC [ 01;04;32;41;07m.
108;;;  You shouldn't need more, if you do, tell me and I'll increase it.  It's
109;;; so easy you could do it yourself...
110;;;
111;;;  Blink, is not supported.  Currently it's mapped as bold.
112;;;
113;;; Important caveat:
114;;; -----------------
115;;;   if you want custom colors in term.el redefine term-default-fg-color
116;;;  and term-default-bg-color BEFORE loading it.
117;;;
118;;;             ----------------------------------------
119;;;
120;;;  If you'd like to check out my complete configuration, you can download
121;;; it from http://www.polito.it/~s64912/things.html, it's ~500k in size and
122;;; contains my .cshrc, .emacs and my whole site-lisp subdirectory.  (notice
123;;; that this term.el may be newer/older than the one in there, please
124;;; check!)
125;;;
126;;;  This complete configuration contains, among other things, a complete
127;;; rectangular marking solution (based on rect-mark.el and
128;;; pc-bindings.el) and should be a good example of how extensively Emacs
129;;; can be configured on a ppp-connected ws.
130;;;
131;;;             ----------------------------------------
132;;;
133;;;  TODO:
134;;;
135;;;  - Add hooks to allow raw-mode keys to be configurable
136;;;  - Which keys are better ? \eOA or \e[A ?
137;;;
138;;;
139;;;  Changes:
140;;;
141;;; V4.0 January 1997
142;;;
143;;;   - Huge reworking of the faces code: now we only have roughly 20-30
144;;;     faces for everything so we're even faster than the old md-term.el !
145;;;   - Finished removing all the J-Shell code.
146;;;
147;;;  V3.0 January 1997
148;;;
149;;;  - Now all the supportable ANSI commands work well.
150;;;  - Reworked a little the code: much less jsh-inspired stuff
151;;;
152;;;  V2.3 November
153;;;
154;;;  - Now all the faces are accessed through an array: much cleaner code.
155;;;
156;;;  V2.2 November 4 1996
157;;;
158;;;  - Implemented ANSI output colorization ( a bit rough but enough for
159;;;    color_ls )
160;;;
161;;;  - Implemented a maximum limit for the scroll buffer (stolen from
162;;;    comint.el)
163;;;
164;;;  v2.1 October 28 1996, first public release
165;;;
166;;;  - Some new keybindings for term-char mode ( notably home/end/...)
167;;;  - Directory, hostname and username tracking via ange-ftp
168;;;  - Multi-term capability via the ansi-term call
169;;;
170;;;  ----------------------------------------------------------------
171;;;  You should/could have something like this in your .emacs to take
172;;;  full advantage of this package
173;;;
174;;;  (add-hook 'term-mode-hook
175;;;  		  (function
176;;;  		   (lambda ()
177;;;  			 (setq term-prompt-regexp "^[^#$%>\n]*[#$%>] *")
178;;;  			 (make-local-variable 'mouse-yank-at-point)
179;;;  			 (make-local-variable 'transient-mark-mode)
180;;;  			 (setq mouse-yank-at-point t)
181;;;  			 (setq transient-mark-mode nil)
182;;;  			 (auto-fill-mode -1)
183;;;  			 (setq tab-width 8 ))))
184;;;
185;;;
186;;;             ----------------------------------------
187;;;
188;;;  If you want to use color ls the best setup is to have a different file
189;;; when you use eterm ( see above, mine is named .emacs_dircolors ).  This
190;;; is necessary because some terminals, rxvt for example, need non-ansi
191;;; hacks to work ( for example on my rxvt white is wired to fg, and to
192;;; obtain normal white I have to do bold-white :)
193;;;
194;;;             ----------------------------------------
195;;;
196;;;
197;;;  # Configuration file for the color ls utility
198;;;  # This file goes in the /etc directory, and must be world readable.
199;;;  # You can copy this file to .dir_colors in your $HOME directory to
200;;;  # override the system defaults.
201;;;
202;;;  # COLOR needs one of these arguments: 'tty' colorizes output to ttys, but
203;;;  # not pipes.  'all' adds color characters to all output.  'none' shuts
204;;;  # colorization off.
205;;;  COLOR tty
206;;;  OPTIONS -F
207;;;
208;;;  # Below, there should be one TERM entry for each termtype that is
209;;;  # colorizable
210;;;  TERM eterm
211;;;
212;;;  # EIGHTBIT, followed by '1' for on, '0' for off.  (8-bit output)
213;;;  EIGHTBIT 1
214;;;
215;;;  # Below are the color init strings for the basic file types.  A color init
216;;;  # string consists of one or more of the following numeric codes:
217;;;  # Attribute codes:
218;;;  # 00=none 01=bold 04=underscore 05=blink 07=reverse 08=concealed
219;;;  # Text color codes:
220;;;  # 30=black 31=red 32=green 33=yellow 34=blue 35=magenta 36=cyan 37=white
221;;;  # Background color codes:
222;;;  # 40=black 41=red 42=green 43=yellow 44=blue 45=magenta 46=cyan 47=white
223;;;  NORMAL 00	# global default, although everything should be something.
224;;;  FILE 00 		# normal file
225;;;  DIR 00;37 	# directory
226;;;  LINK 00;36 	# symbolic link
227;;;  FIFO 00;37	# pipe
228;;;  SOCK 40;35	# socket
229;;;  BLK 33;01	# block device driver
230;;;  CHR 33;01 	# character device driver
231;;;
232;;;  # This is for files with execute permission:
233;;;  EXEC 00;32
234;;;
235;;;  # List any file extensions like '.gz' or '.tar' that you would like ls
236;;;  # to colorize below.  Put the extension, a space, and the color init
237;;;  # string.  (and any comments you want to add after a '#')
238;;;  .tar 01;33 # archives or compressed
239;;;  .tgz 01;33
240;;;  .arj 01;33
241;;;  .taz 01;33
242;;;  .lzh 01;33
243;;;  .zip 01;33
244;;;  .z   01;33
245;;;  .Z   01;33
246;;;  .gz  01;33
247;;;  .jpg 01;35 # image formats
248;;;  .gif 01;35
249;;;  .bmp 01;35
250;;;  .xbm 01;35
251;;;  .xpm 01;35
252;;;
253;;;
254;;;             ----------------------------------------
255;;;
256;;;  Notice: for directory/host/user tracking you need to have something
257;;; like this in your shell startup script ( this is for tcsh but should
258;;; be quite easy to port to other shells )
259;;;
260;;;             ----------------------------------------
261;;;
262;;;
263;;;  	 set os = `uname`
264;;;  	 set host = `hostname`
265;;;  	 set date = `date`
266;;;
267;;;  # su does not change this but I'd like it to
268;;;
269;;;  	 set user = `whoami`
270;;;
271;;;  # ...
272;;;
273;;;  	 if ( eterm =~ $TERM ) then
274;;;
275;;;  		echo --------------------------------------------------------------
276;;;  		echo Hello $user
277;;;  		echo Today is $date
278;;;  		echo We are on $host running $os under Emacs term mode
279;;;  		echo --------------------------------------------------------------
280;;;
281;;;  		setenv EDITOR emacsclient
282;;;
283;;;   # Notice: $host and $user have been set before to 'hostname' and 'whoami'
284;;;   # this is necessary because, f.e., certain versions of 'su' do not change
285;;;   # $user, YMMV: if you don't want to fiddle with them define a couple
286;;;   # of new variables and use these instead.
287;;;   # NOTICE that there is a space between "AnSiT?" and $whatever NOTICE
288;;;
289;;;   # These are because we want the real cwd in the messages, not the login
290;;;   # time one !
291;;;
292;;; 		set cwd_hack='$cwd'
293;;; 		set host_hack='$host'
294;;; 		set user_hack='$user'
295;;;
296;;;   # Notice that the ^[ character is an ESC, not two chars.  You can
297;;;   # get it in various ways, for example by typing
298;;;   # echo -e '\033' > escape.file
299;;;   # or by using your favourite editor
300;;;
301;;; 		foreach temp (cd pushd)
302;;; 			alias $temp "$temp \!* ; echo 'AnSiTc' $cwd_hack"
303;;; 		end
304;;;   		alias popd 'popd ;echo "AnSiTc" $cwd'
305;;;
306;;;   # Every command that can modify the user/host/directory should be aliased
307;;;   # as follows for the tracking mechanism to work.
308;;;
309;;; 		foreach temp ( rlogin telnet rsh sh ksh csh tcsh zsh bash tcl su )
310;;; 			alias $temp "$temp \!* ; echo 'AnSiTh' $host_hack ; \
311;;; 					echo 'AnSiTu' $user_hack ;echo 'AnSiTc' $cwd_hack"
312;;; 		end
313;;;
314;;;   # Start up & use color ls
315;;;
316;;; 		echo "AnSiTh" $host
317;;; 		echo "AnSiTu" $user
318;;; 		echo "AnSiTc" $cwd
319;;;
320;;;   # some housekeeping
321;;;
322;;; 		unset cwd_hack
323;;; 		unset host_hack
324;;; 		unset user_hack
325;;; 		unset temp
326;;;
327;;; 		eval `/bin/dircolors /home/marco/.emacs_dircolors`
328;;;    endif
329;;;
330;;;  # ...
331;;;
332;;;  # Let's not clutter user space
333;;;
334;;;  	 unset os
335;;;  	 unset date
336;;;
337;;;
338
339;;; Original Commentary:
340;;; --------------------
341
342;; The changelog is at the end of this file.
343
344;; Please send me bug reports, bug fixes, and extensions, so that I can
345;; merge them into the master source.
346;;     - Per Bothner (bothner@cygnus.com)
347
348;; This file defines a general command-interpreter-in-a-buffer package
349;; (term mode).  The idea is that you can build specific process-in-a-buffer
350;; modes on top of term mode -- e.g., lisp, shell, scheme, T, soar, ....
351;; This way, all these specific packages share a common base functionality,
352;; and a common set of bindings, which makes them easier to use (and
353;; saves code, implementation time, etc., etc.).
354
355;; For hints on converting existing process modes (e.g., tex-mode,
356;; background, dbx, gdb, kermit, prolog, telnet) to use term-mode
357;; instead of shell-mode, see the notes at the end of this file.
358
359
360;; Brief Command Documentation:
361;;============================================================================
362;; Term Mode Commands: (common to all derived modes, like cmushell & cmulisp
363;; mode)
364;;
365;; m-p	    term-previous-input    	  Cycle backwards in input history
366;; m-n	    term-next-input  	    	  Cycle forwards
367;; m-r     term-previous-matching-input  Previous input matching a regexp
368;; m-s     comint-next-matching-input      Next input that matches
369;; return  term-send-input
370;; c-c c-a term-bol                      Beginning of line; skip prompt.
371;; c-d	    term-delchar-or-maybe-eof     Delete char unless at end of buff.
372;; c-c c-u term-kill-input	    	    ^u
373;; c-c c-w backward-kill-word    	    ^w
374;; c-c c-c term-interrupt-subjob 	    ^c
375;; c-c c-z term-stop-subjob	    	    ^z
376;; c-c c-\ term-quit-subjob	    	    ^\
377;; c-c c-o term-kill-output		    Delete last batch of process output
378;; c-c c-r term-show-output		    Show last batch of process output
379;; c-c c-h term-dynamic-list-input-ring  List input history
380;;
381;; Not bound by default in term-mode
382;; term-send-invisible			Read a line w/o echo, and send to proc
383;; (These are bound in shell-mode)
384;; term-dynamic-complete		Complete filename at point.
385;; term-dynamic-list-completions	List completions in help buffer.
386;; term-replace-by-expanded-filename	Expand and complete filename at point;
387;;					replace with expanded/completed name.
388;; term-kill-subjob			No mercy.
389;; term-show-maximum-output            Show as much output as possible.
390;; term-continue-subjob		Send CONT signal to buffer's process
391;;					group.  Useful if you accidentally
392;;					suspend your process (with C-c C-z).
393
394;; term-mode-hook is the term mode hook.  Basically for your keybindings.
395;; term-load-hook is run after loading in this package.
396
397;;; Code:
398
399;; This is passed to the inferior in the EMACS environment variable,
400;; so it is important to increase it if there are protocol-relevant changes.
401(defconst term-protocol-version "0.96")
402
403(eval-when-compile
404  (require 'ange-ftp))
405(require 'ring)
406(require 'ehelp)
407
408(defgroup term nil
409  "General command interpreter in a window."
410  :group 'processes
411  :group 'unix)
412
413
414;;; Buffer Local Variables:
415;;;============================================================================
416;;; Term mode buffer local variables:
417;;;     term-prompt-regexp    - string       term-bol uses to match prompt.
418;;;     term-delimiter-argument-list - list  For delimiters and arguments
419;;;     term-last-input-start - marker       Handy if inferior always echoes
420;;;     term-last-input-end   - marker       For term-kill-output command
421;; For the input history mechanism:
422(defvar term-input-ring-size 32 "Size of input history ring.")
423;;;     term-input-ring-size  - integer
424;;;     term-input-ring       - ring
425;;;     term-input-ring-index - number           ...
426;;;     term-input-autoexpand - symbol           ...
427;;;     term-input-ignoredups - boolean          ...
428;;;     term-last-input-match - string           ...
429;;;     term-dynamic-complete-functions - hook   For the completion mechanism
430;;;     term-completion-fignore - list           ...
431;;;     term-get-old-input    - function     Hooks for specific
432;;;     term-input-filter-functions - hook     process-in-a-buffer
433;;;     term-input-filter     - function         modes.
434;;;     term-input-send	- function
435;;;     term-scroll-to-bottom-on-output - symbol ...
436;;;     term-scroll-show-maximum-output - boolean...
437(defvar term-height) ;; Number of lines in window.
438(defvar term-width) ;; Number of columns in window.
439(defvar term-home-marker) ;; Marks the "home" position for cursor addressing.
440(defvar term-saved-home-marker nil) ;; When using alternate sub-buffer,
441;;		contains saved term-home-marker from original sub-buffer .
442(defvar term-start-line-column 0) ;; (current-column) at start of screen line,
443;;		or nil if unknown.
444(defvar term-current-column 0) ;; If non-nil, is cache for (current-column).
445(defvar term-current-row 0) ;; Current vertical row (relative to home-marker)
446;;		or nil if unknown.
447(defvar term-insert-mode nil)
448(defvar term-vertical-motion)
449(defvar term-terminal-state 0) ;; State of the terminal emulator:
450;;		state 0: Normal state
451;;		state 1: Last character was a graphic in the last column.
452;;		If next char is graphic, first move one column right
453;;		(and line warp) before displaying it.
454;;		This emulates (more or less) the behavior of xterm.
455;;		state 2: seen ESC
456;;		state 3: seen ESC [ (or ESC [ ?)
457;;		state 4: term-terminal-parameter contains pending output.
458(defvar term-kill-echo-list nil) ;; A queue of strings whose echo
459;;		we want suppressed.
460(defvar term-terminal-parameter)
461(defvar term-terminal-previous-parameter)
462(defvar term-current-face 'default)
463(defvar term-scroll-start 0) ;; Top-most line (inclusive) of scrolling region.
464(defvar term-scroll-end) ;; Number of line (zero-based) after scrolling region.
465(defvar term-pager-count nil) ;; If nil, paging is disabled.
466;;		Otherwise, number of lines before we need to page.
467(defvar term-saved-cursor nil)
468(defvar term-command-hook)
469(defvar term-log-buffer nil)
470(defvar term-scroll-with-delete nil) ;; term-scroll-with-delete is t if
471;;		forward scrolling should be implemented by delete to
472;;		top-most line(s); and nil if scrolling should be implemented
473;;		by moving term-home-marker.  It is set to t iff there is a
474;;		(non-default) scroll-region OR the alternate buffer is used.
475(defvar term-pending-delete-marker) ;; New user input in line mode needs to
476;;		be deleted, because it gets echoed by the inferior.
477;;		To reduce flicker, we defer the delete until the next output.
478(defvar term-old-mode-map nil) ;; Saves the old keymap when in char mode.
479(defvar term-old-mode-line-format) ;; Saves old mode-line-format while paging.
480(defvar term-pager-old-local-map nil) ;; Saves old keymap while paging.
481(defvar term-pager-old-filter) ;; Saved process-filter while paging.
482
483(defcustom explicit-shell-file-name nil
484  "*If non-nil, is file name to use for explicitly requested inferior shell."
485  :type '(choice (const nil) file)
486  :group 'term)
487
488(defvar term-prompt-regexp "^"
489  "Regexp to recognize prompts in the inferior process.
490Defaults to \"^\", the null string at BOL.
491
492Good choices:
493  Canonical Lisp: \"^[^> \\n]*>+:? *\" (Lucid, franz, kcl, T, cscheme, oaklisp)
494  Lucid Common Lisp: \"^\\\\(>\\\\|\\\\(->\\\\)+\\\\) *\"
495  franz: \"^\\\\(->\\\\|<[0-9]*>:\\\\) *\"
496  kcl: \"^>+ *\"
497  shell: \"^[^#$%>\\n]*[#$%>] *\"
498  T: \"^>+ *\"
499
500This is a good thing to set in mode hooks.")
501
502(defvar term-delimiter-argument-list ()
503  "List of characters to recognize as separate arguments in input.
504Strings comprising a character in this list will separate the arguments
505surrounding them, and also be regarded as arguments in their own right (unlike
506whitespace).  See `term-arguments'.
507Defaults to the empty list.
508
509For shells, a good value is (?\\| ?& ?< ?> ?\\( ?\\) ?\\;).
510
511This is a good thing to set in mode hooks.")
512
513(defcustom term-input-autoexpand nil
514  "*If non-nil, expand input command history references on completion.
515This mirrors the optional behavior of tcsh (its autoexpand and histlit).
516
517If the value is `input', then the expansion is seen on input.
518If the value is `history', then the expansion is only when inserting
519into the buffer's input ring.  See also `term-magic-space' and
520`term-dynamic-complete'.
521
522This variable is buffer-local."
523  :type '(choice (const nil) (const t) (const input) (const history))
524  :group 'term)
525
526(defcustom term-input-ignoredups nil
527  "*If non-nil, don't add input matching the last on the input ring.
528This mirrors the optional behavior of bash.
529
530This variable is buffer-local."
531  :type 'boolean
532  :group 'term)
533
534(defcustom term-input-ring-file-name nil
535  "*If non-nil, name of the file to read/write input history.
536See also `term-read-input-ring' and `term-write-input-ring'.
537
538This variable is buffer-local, and is a good thing to set in mode hooks."
539  :type 'boolean
540  :group 'term)
541
542(defcustom term-scroll-to-bottom-on-output nil
543  "*Controls whether interpreter output causes window to scroll.
544If nil, then do not scroll.  If t or `all', scroll all windows showing buffer.
545If `this', scroll only the selected window.
546If `others', scroll only those that are not the selected window.
547
548The default is nil.
549
550See variable `term-scroll-show-maximum-output'.
551This variable is buffer-local."
552  :type 'boolean
553  :group 'term)
554
555(defcustom term-scroll-show-maximum-output nil
556  "*Controls how interpreter output causes window to scroll.
557If non-nil, then show the maximum output when the window is scrolled.
558
559See variable `term-scroll-to-bottom-on-output'.
560This variable is buffer-local."
561  :type 'boolean
562  :group 'term)
563
564;; Where gud-display-frame should put the debugging arrow.  This is
565;; set by the marker-filter, which scans the debugger's output for
566;; indications of the current pc.
567(defvar term-pending-frame nil)
568
569;;; Here are the per-interpreter hooks.
570(defvar term-get-old-input (function term-get-old-input-default)
571  "Function that submits old text in term mode.
572This function is called when return is typed while the point is in old text.
573It returns the text to be submitted as process input.  The default is
574`term-get-old-input-default', which grabs the current line, and strips off
575leading text matching `term-prompt-regexp'.")
576
577(defvar term-dynamic-complete-functions
578  '(term-replace-by-expanded-history term-dynamic-complete-filename)
579  "List of functions called to perform completion.
580Functions should return non-nil if completion was performed.
581See also `term-dynamic-complete'.
582
583This is a good thing to set in mode hooks.")
584
585(defvar term-input-filter
586  (function (lambda (str) (not (string-match "\\`\\s *\\'" str))))
587  "Predicate for filtering additions to input history.
588Only inputs answering true to this function are saved on the input
589history list.  Default is to save anything that isn't all whitespace.")
590
591(defvar term-input-filter-functions '()
592  "Functions to call before input is sent to the process.
593These functions get one argument, a string containing the text to send.
594
595This variable is buffer-local.")
596
597(defvar term-input-sender (function term-simple-send)
598  "Function to actually send to PROCESS the STRING submitted by user.
599Usually this is just `term-simple-send', but if your mode needs to
600massage the input string, this is your hook.  This is called from
601the user command `term-send-input'.  `term-simple-send' just sends
602the string plus a newline.")
603
604(defcustom term-eol-on-send t
605  "*Non-nil means go to the end of the line before sending input.
606See `term-send-input'."
607  :type 'boolean
608  :group 'term)
609
610(defcustom term-mode-hook '()
611  "Called upon entry into term mode.
612This is run before the process is cranked up."
613  :type 'hook
614  :group 'term)
615
616(defcustom term-exec-hook '()
617  "Called each time a process is exec'd by `term-exec'.
618This is called after the process is cranked up.  It is useful for things that
619must be done each time a process is executed in a term mode buffer (e.g.,
620`process-kill-without-query').  In contrast, `term-mode-hook' is only
621executed once when the buffer is created."
622  :type 'hook
623  :group 'term)
624
625(defvar term-mode-map nil)
626(defvar term-raw-map nil
627  "Keyboard map for sending characters directly to the inferior process.")
628(defvar term-escape-char nil
629  "Escape character for char sub-mode of term mode.
630Do not change it directly; use `term-set-escape-char' instead.")
631(defvar term-raw-escape-map nil)
632
633(defvar term-pager-break-map nil)
634
635(defvar term-ptyp t
636  "True if communications via pty; false if by pipe.  Buffer local.
637This is to work around a bug in Emacs process signaling.")
638
639(defvar term-last-input-match ""
640  "Last string searched for by term input history search, for defaulting.
641Buffer local variable.")
642
643(defvar term-input-ring nil)
644(defvar term-last-input-start)
645(defvar term-last-input-end)
646(defvar term-input-ring-index nil
647  "Index of last matched history element.")
648(defvar term-matching-input-from-input-string ""
649  "Input previously used to match input history.")
650; This argument to set-process-filter disables reading from the process,
651; assuming this is Emacs 19.20 or newer.
652(defvar term-pager-filter t)
653
654(put 'term-replace-by-expanded-history 'menu-enable 'term-input-autoexpand)
655(put 'term-input-ring 'permanent-local t)
656(put 'term-input-ring-index 'permanent-local t)
657(put 'term-input-autoexpand 'permanent-local t)
658(put 'term-input-filter-functions 'permanent-local t)
659(put 'term-scroll-to-bottom-on-output 'permanent-local t)
660(put 'term-scroll-show-maximum-output 'permanent-local t)
661(put 'term-ptyp 'permanent-local t)
662
663(defmacro term-in-char-mode () '(eq (current-local-map) term-raw-map))
664(defmacro term-in-line-mode () '(not (term-in-char-mode)))
665;; True if currently doing PAGER handling.
666(defmacro term-pager-enabled () 'term-pager-count)
667(defmacro term-handling-pager () 'term-pager-old-local-map)
668(defmacro term-using-alternate-sub-buffer () 'term-saved-home-marker)
669
670(defvar term-signals-menu)
671(defvar term-terminal-menu)
672
673;;; Let's silence the byte-compiler -mm
674(defvar term-ansi-at-host nil)
675(defvar term-ansi-at-dir nil)
676(defvar term-ansi-at-user nil)
677(defvar term-ansi-at-message nil)
678(defvar term-ansi-at-save-user nil)
679(defvar term-ansi-at-save-pwd nil)
680(defvar term-ansi-at-save-anon nil)
681(defvar term-ansi-current-bold nil)
682(defvar term-ansi-current-color 0)
683(defvar term-ansi-face-already-done nil)
684(defvar term-ansi-current-bg-color 0)
685(defvar term-ansi-current-underline nil)
686(defvar term-ansi-current-reverse nil)
687(defvar term-ansi-current-invisible nil)
688
689;;; Four should be enough, if you want more, just add. -mm
690(defvar term-terminal-more-parameters 0)
691(defvar term-terminal-previous-parameter-2 -1)
692(defvar term-terminal-previous-parameter-3 -1)
693(defvar term-terminal-previous-parameter-4 -1)
694;;;
695
696;;; faces -mm
697
698(defcustom term-default-fg-color 'unspecified
699  "Default color for foreground in `term'."
700  :group 'term
701  :type 'string)
702
703(defcustom term-default-bg-color 'unspecified
704  "Default color for background in `term'."
705  :group 'term
706  :type 'string)
707
708;;; Use the same colors that xterm uses, see `xterm-standard-colors'.
709(defvar ansi-term-color-vector
710  [unspecified "black" "red3" "green3" "yellow3" "blue2"
711   "magenta3" "cyan3" "white"])
712
713;;; Inspiration came from comint.el -mm
714(defvar term-buffer-maximum-size 2048
715  "*The maximum size in lines for term buffers.
716Term buffers are truncated from the top to be no greater than this number.
717Notice that a setting of 0 means \"don't truncate anything\".  This variable
718is buffer-local.")
719;;;
720
721(when (featurep 'xemacs)
722  (defvar term-terminal-menu
723    '("Terminal"
724      [ "Character mode" term-char-mode (term-in-line-mode)]
725      [ "Line mode" term-line-mode (term-in-char-mode)]
726      [ "Enable paging" term-pager-toggle (not term-pager-count)]
727      [ "Disable paging" term-pager-toggle term-pager-count])))
728
729(unless term-mode-map
730  (setq term-mode-map (make-sparse-keymap))
731  (define-key term-mode-map "\ep" 'term-previous-input)
732  (define-key term-mode-map "\en" 'term-next-input)
733  (define-key term-mode-map "\er" 'term-previous-matching-input)
734  (define-key term-mode-map "\es" 'term-next-matching-input)
735  (unless (featurep 'xemacs)
736    (define-key term-mode-map [?\A-\M-r]
737      'term-previous-matching-input-from-input)
738    (define-key term-mode-map [?\A-\M-s] 'term-next-matching-input-from-input))
739  (define-key term-mode-map "\e\C-l" 'term-show-output)
740  (define-key term-mode-map "\C-m" 'term-send-input)
741  (define-key term-mode-map "\C-d" 'term-delchar-or-maybe-eof)
742  (define-key term-mode-map "\C-c\C-a" 'term-bol)
743  (define-key term-mode-map "\C-c\C-u" 'term-kill-input)
744  (define-key term-mode-map "\C-c\C-w" 'backward-kill-word)
745  (define-key term-mode-map "\C-c\C-c" 'term-interrupt-subjob)
746  (define-key term-mode-map "\C-c\C-z" 'term-stop-subjob)
747  (define-key term-mode-map "\C-c\C-\\" 'term-quit-subjob)
748  (define-key term-mode-map "\C-c\C-m" 'term-copy-old-input)
749  (define-key term-mode-map "\C-c\C-o" 'term-kill-output)
750  (define-key term-mode-map "\C-c\C-r" 'term-show-output)
751  (define-key term-mode-map "\C-c\C-e" 'term-show-maximum-output)
752  (define-key term-mode-map "\C-c\C-l" 'term-dynamic-list-input-ring)
753  (define-key term-mode-map "\C-c\C-n" 'term-next-prompt)
754  (define-key term-mode-map "\C-c\C-p" 'term-previous-prompt)
755  (define-key term-mode-map "\C-c\C-d" 'term-send-eof)
756  (define-key term-mode-map "\C-c\C-k" 'term-char-mode)
757  (define-key term-mode-map "\C-c\C-j" 'term-line-mode)
758  (define-key term-mode-map "\C-c\C-q" 'term-pager-toggle)
759
760;  ;; completion:
761;  (define-key term-mode-map [menu-bar completion]
762;    (cons "Complete" (make-sparse-keymap "Complete")))
763;  (define-key term-mode-map [menu-bar completion complete-expand]
764;    '("Expand File Name" . term-replace-by-expanded-filename))
765;  (define-key term-mode-map [menu-bar completion complete-listing]
766;    '("File Completion Listing" . term-dynamic-list-filename-completions))
767;  (define-key term-mode-map [menu-bar completion complete-file]
768;    '("Complete File Name" . term-dynamic-complete-filename))
769;  (define-key term-mode-map [menu-bar completion complete]
770;    '("Complete Before Point" . term-dynamic-complete))
771;  ;; Put them in the menu bar:
772;  (setq menu-bar-final-items (append '(terminal completion inout signals)
773;				     menu-bar-final-items))
774  )
775
776;; Menu bars:
777(unless (featurep 'xemacs)
778  ;; terminal:
779  (let (newmap)
780    (setq newmap (make-sparse-keymap "Terminal"))
781    (define-key newmap [terminal-pager-enable]
782      '("Enable paging" . term-fake-pager-enable))
783    (define-key newmap [terminal-pager-disable]
784      '("Disable paging" . term-fake-pager-disable))
785    (define-key newmap [terminal-char-mode]
786      '("Character mode" . term-char-mode))
787    (define-key newmap [terminal-line-mode]
788      '("Line mode" . term-line-mode))
789    (setq term-terminal-menu (cons "Terminal" newmap))
790
791    ;; completion:  (line mode only)
792    (defvar term-completion-menu (make-sparse-keymap "Complete"))
793    (define-key term-mode-map [menu-bar completion]
794      (cons "Complete" term-completion-menu))
795    (define-key term-completion-menu [complete-expand]
796      '("Expand File Name" . term-replace-by-expanded-filename))
797    (define-key term-completion-menu [complete-listing]
798      '("File Completion Listing" . term-dynamic-list-filename-completions))
799    (define-key term-completion-menu [menu-bar completion complete-file]
800      '("Complete File Name" . term-dynamic-complete-filename))
801    (define-key term-completion-menu [menu-bar completion complete]
802      '("Complete Before Point" . term-dynamic-complete))
803
804    ;; Input history: (line mode only)
805    (defvar term-inout-menu (make-sparse-keymap "In/Out"))
806    (define-key term-mode-map [menu-bar inout]
807      (cons "In/Out" term-inout-menu))
808    (define-key term-inout-menu [kill-output]
809      '("Kill Current Output Group" . term-kill-output))
810    (define-key term-inout-menu [next-prompt]
811      '("Forward Output Group" . term-next-prompt))
812    (define-key term-inout-menu [previous-prompt]
813      '("Backward Output Group" . term-previous-prompt))
814    (define-key term-inout-menu [show-maximum-output]
815      '("Show Maximum Output" . term-show-maximum-output))
816    (define-key term-inout-menu [show-output]
817      '("Show Current Output Group" . term-show-output))
818    (define-key term-inout-menu [kill-input]
819      '("Kill Current Input" . term-kill-input))
820    (define-key term-inout-menu [copy-input]
821      '("Copy Old Input" . term-copy-old-input))
822    (define-key term-inout-menu [forward-matching-history]
823      '("Forward Matching Input..." . term-forward-matching-input))
824    (define-key term-inout-menu [backward-matching-history]
825      '("Backward Matching Input..." . term-backward-matching-input))
826    (define-key term-inout-menu [next-matching-history]
827      '("Next Matching Input..." . term-next-matching-input))
828    (define-key term-inout-menu [previous-matching-history]
829      '("Previous Matching Input..." . term-previous-matching-input))
830    (define-key term-inout-menu [next-matching-history-from-input]
831      '("Next Matching Current Input" . term-next-matching-input-from-input))
832    (define-key term-inout-menu [previous-matching-history-from-input]
833      '("Previous Matching Current Input" .
834		term-previous-matching-input-from-input))
835    (define-key term-inout-menu [next-history]
836      '("Next Input" . term-next-input))
837    (define-key term-inout-menu [previous-history]
838      '("Previous Input" . term-previous-input))
839    (define-key term-inout-menu [list-history]
840      '("List Input History" . term-dynamic-list-input-ring))
841    (define-key term-inout-menu [expand-history]
842      '("Expand History Before Point" . term-replace-by-expanded-history))
843
844    ;; Signals
845    (setq newmap (make-sparse-keymap "Signals"))
846    (define-key newmap [eof] '("EOF" . term-send-eof))
847    (define-key newmap [kill] '("KILL" . term-kill-subjob))
848    (define-key newmap [quit] '("QUIT" . term-quit-subjob))
849    (define-key newmap [cont] '("CONT" . term-continue-subjob))
850    (define-key newmap [stop] '("STOP" . term-stop-subjob))
851    (define-key newmap [] '("BREAK" . term-interrupt-subjob))
852    (define-key term-mode-map [menu-bar signals]
853      (setq term-signals-menu (cons "Signals" newmap)))
854    ))
855
856;; Set up term-raw-map, etc.
857
858(defun term-set-escape-char (c)
859  "Change `term-escape-char' and keymaps that depend on it."
860  (when term-escape-char
861    (define-key term-raw-map term-escape-char 'term-send-raw))
862  (setq c (make-string 1 c))
863  (define-key term-raw-map c term-raw-escape-map)
864  ;; Define standard bindings in term-raw-escape-map
865  (define-key term-raw-escape-map "\C-v"
866    (lookup-key (current-global-map) "\C-v"))
867  (define-key term-raw-escape-map "\C-u"
868    (lookup-key (current-global-map) "\C-u"))
869  (define-key term-raw-escape-map c 'term-send-raw)
870  (define-key term-raw-escape-map "\C-q" 'term-pager-toggle)
871  ;; The keybinding for term-char-mode is needed by the menubar code.
872  (define-key term-raw-escape-map "\C-k" 'term-char-mode)
873  (define-key term-raw-escape-map "\C-j" 'term-line-mode)
874  ;; It's convenient to have execute-extended-command here.
875  (define-key term-raw-escape-map [?\M-x] 'execute-extended-command))
876
877(let* ((map (make-keymap))
878       (esc-map (make-keymap))
879       (i 0))
880  (while (< i 128)
881    (define-key map (make-string 1 i) 'term-send-raw)
882    ;; Avoid O and [. They are used in escape sequences for various keys.
883    (unless (or (eq i ?O) (eq i 91))
884		(define-key esc-map (make-string 1 i) 'term-send-raw-meta))
885    (setq i (1+ i)))
886  (dolist (elm (generic-character-list))
887    (define-key map (vector elm) 'term-send-raw))
888  (define-key map "\e" esc-map)
889  (setq term-raw-map map)
890  (setq term-raw-escape-map
891	(copy-keymap (lookup-key (current-global-map) "\C-x")))
892
893;;; Added nearly all the 'grey keys' -mm
894
895  (if (featurep 'xemacs)
896      (define-key term-raw-map [button2] 'term-mouse-paste)
897    (define-key term-raw-map [mouse-2] 'term-mouse-paste)
898    (define-key term-raw-map [menu-bar terminal] term-terminal-menu)
899    (define-key term-raw-map [menu-bar signals] term-signals-menu))
900  (define-key term-raw-map [up] 'term-send-up)
901  (define-key term-raw-map [down] 'term-send-down)
902  (define-key term-raw-map [right] 'term-send-right)
903  (define-key term-raw-map [left] 'term-send-left)
904  (define-key term-raw-map [delete] 'term-send-del)
905  (define-key term-raw-map [deletechar] 'term-send-del)
906  (define-key term-raw-map [backspace] 'term-send-backspace)
907  (define-key term-raw-map [home] 'term-send-home)
908  (define-key term-raw-map [end] 'term-send-end)
909  (define-key term-raw-map [insert] 'term-send-insert)
910  (define-key term-raw-map [S-prior] 'scroll-down)
911  (define-key term-raw-map [S-next] 'scroll-up)
912  (define-key term-raw-map [S-insert] 'term-paste)
913  (define-key term-raw-map [prior] 'term-send-prior)
914  (define-key term-raw-map [next] 'term-send-next))
915
916(term-set-escape-char ?\C-c)
917
918(defun term-window-width ()
919  (if (featurep 'xemacs)
920      (1- (window-width))
921    (if (and window-system overflow-newline-into-fringe)
922	(window-width)
923      (1- (window-width)))))
924
925
926(put 'term-mode 'mode-class 'special)
927
928
929;;; Use this variable as a display table for `term-mode'.
930(defvar term-display-table
931  (let ((dt (or (copy-sequence standard-display-table)
932		(make-display-table)))
933        i)
934    ;; avoid changing the display table for ^J
935    (setq i 0)
936    (while (< i 10)
937      (aset dt i (vector i))
938      (setq i (1+ i)))
939    (setq i 11)
940    (while (< i 32)
941      (aset dt i (vector i))
942      (setq i (1+ i)))
943    (setq i 128)
944    (while (< i 256)
945      (aset dt i (vector i))
946      (setq i (1+ i)))
947    dt))
948
949(defun term-mode ()
950  "Major mode for interacting with an inferior interpreter.
951The interpreter name is same as buffer name, sans the asterisks.
952
953There are two submodes: line mode and char mode.  By default, you are
954in char mode.  In char sub-mode, each character (except
955`term-escape-char') is sent immediately to the subprocess.
956The escape character is equivalent to the usual meaning of C-x.
957
958In line mode, you send a line of input at a time; use
959\\[term-send-input] to send.
960
961In line mode, this maintains an input history of size
962`term-input-ring-size', and you can access it with the commands
963\\[term-next-input], \\[term-previous-input], and
964\\[term-dynamic-list-input-ring].  Input ring history expansion can be
965achieved with the commands \\[term-replace-by-expanded-history] or
966\\[term-magic-space].  Input ring expansion is controlled by the
967variable `term-input-autoexpand', and addition is controlled by the
968variable `term-input-ignoredups'.
969
970Input to, and output from, the subprocess can cause the window to scroll to
971the end of the buffer.  See variables `term-scroll-to-bottom-on-input',
972and `term-scroll-to-bottom-on-output'.
973
974If you accidentally suspend your process, use \\[term-continue-subjob]
975to continue it.
976
977This mode can be customized to create specific modes for running
978particular subprocesses.  This can be done by setting the hooks
979`term-input-filter-functions', `term-input-filter',
980`term-input-sender' and `term-get-old-input' to appropriate functions,
981and the variable `term-prompt-regexp' to the appropriate regular
982expression.
983
984Commands in raw mode:
985
986\\{term-raw-map}
987
988Commands in line mode:
989
990\\{term-mode-map}
991
992Entry to this mode runs the hooks on `term-mode-hook'."
993  (interactive)
994  ;; Do not remove this.  All major modes must do this.
995  (kill-all-local-variables)
996  (setq major-mode 'term-mode)
997  (setq mode-name "Term")
998  (use-local-map term-mode-map)
999  ;; we do not want indent to sneak in any tabs
1000  (setq indent-tabs-mode nil)
1001  (setq buffer-display-table term-display-table)
1002  (make-local-variable 'term-home-marker)
1003  (setq term-home-marker (copy-marker 0))
1004  (make-local-variable 'term-saved-home-marker)
1005  (make-local-variable 'term-height)
1006  (make-local-variable 'term-width)
1007  (setq term-width (term-window-width))
1008  (setq term-height (1- (window-height)))
1009  (make-local-variable 'term-terminal-parameter)
1010  (make-local-variable 'term-saved-cursor)
1011  (make-local-variable 'term-last-input-start)
1012  (setq term-last-input-start (make-marker))
1013  (make-local-variable 'term-last-input-end)
1014  (setq term-last-input-end (make-marker))
1015  (make-local-variable 'term-last-input-match)
1016  (setq term-last-input-match "")
1017  (make-local-variable 'term-prompt-regexp) ; Don't set; default
1018  (make-local-variable 'term-input-ring-size) ; ...to global val.
1019  (make-local-variable 'term-input-ring)
1020  (make-local-variable 'term-input-ring-file-name)
1021  (or (and (boundp 'term-input-ring) term-input-ring)
1022      (setq term-input-ring (make-ring term-input-ring-size)))
1023  (make-local-variable 'term-input-ring-index)
1024  (or (and (boundp 'term-input-ring-index) term-input-ring-index)
1025      (setq term-input-ring-index nil))
1026
1027  (make-local-variable 'term-command-hook)
1028  (setq term-command-hook (symbol-function 'term-command-hook))
1029
1030;;; I'm not sure these saves are necessary but, since I
1031;;; haven't tested the whole thing on a net connected machine with
1032;;; a properly configured ange-ftp, I've decided to be conservative
1033;;; and put them in. -mm
1034
1035  (make-local-variable 'term-ansi-at-host)
1036  (setq term-ansi-at-host (system-name))
1037
1038  (make-local-variable 'term-ansi-at-dir)
1039  (setq term-ansi-at-dir default-directory)
1040
1041  (make-local-variable 'term-ansi-at-message)
1042  (setq term-ansi-at-message nil)
1043
1044;;; For user tracking purposes -mm
1045  (make-local-variable 'ange-ftp-default-user)
1046  (make-local-variable 'ange-ftp-default-password)
1047  (make-local-variable 'ange-ftp-generate-anonymous-password)
1048
1049;;; You may want to have different scroll-back sizes -mm
1050  (make-local-variable 'term-buffer-maximum-size)
1051
1052;;; Of course these have to be buffer-local -mm
1053  (make-local-variable 'term-ansi-current-bold)
1054  (make-local-variable 'term-ansi-current-color)
1055  (make-local-variable 'term-ansi-face-already-done)
1056  (make-local-variable 'term-ansi-current-bg-color)
1057  (make-local-variable 'term-ansi-current-underline)
1058  (make-local-variable 'term-ansi-current-reverse)
1059  (make-local-variable 'term-ansi-current-invisible)
1060
1061  (make-local-variable 'term-terminal-parameter)
1062  (make-local-variable 'term-terminal-previous-parameter)
1063  (make-local-variable 'term-terminal-previous-parameter-2)
1064  (make-local-variable 'term-terminal-previous-parameter-3)
1065  (make-local-variable 'term-terminal-previous-parameter-4)
1066  (make-local-variable 'term-terminal-more-parameters)
1067
1068  (make-local-variable 'term-terminal-state)
1069  (make-local-variable 'term-kill-echo-list)
1070  (make-local-variable 'term-start-line-column)
1071  (make-local-variable 'term-current-column)
1072  (make-local-variable 'term-current-row)
1073  (make-local-variable 'term-log-buffer)
1074  (make-local-variable 'term-scroll-start)
1075  (make-local-variable 'term-scroll-end)
1076  (setq term-scroll-end term-height)
1077  (make-local-variable 'term-scroll-with-delete)
1078  (make-local-variable 'term-pager-count)
1079  (make-local-variable 'term-pager-old-local-map)
1080  (make-local-variable 'term-old-mode-map)
1081  (make-local-variable 'term-insert-mode)
1082  (make-local-variable 'term-dynamic-complete-functions)
1083  (make-local-variable 'term-completion-fignore)
1084  (make-local-variable 'term-get-old-input)
1085  (make-local-variable 'term-matching-input-from-input-string)
1086  (make-local-variable 'term-input-autoexpand)
1087  (make-local-variable 'term-input-ignoredups)
1088  (make-local-variable 'term-delimiter-argument-list)
1089  (make-local-variable 'term-input-filter-functions)
1090  (make-local-variable 'term-input-filter)
1091  (make-local-variable 'term-input-sender)
1092  (make-local-variable 'term-eol-on-send)
1093  (make-local-variable 'term-scroll-to-bottom-on-output)
1094  (make-local-variable 'term-scroll-show-maximum-output)
1095  (make-local-variable 'term-ptyp)
1096  (make-local-variable 'term-exec-hook)
1097  (make-local-variable 'term-vertical-motion)
1098  (make-local-variable 'term-pending-delete-marker)
1099  (setq term-pending-delete-marker (make-marker))
1100  (make-local-variable 'term-current-face)
1101  (make-local-variable 'term-pending-frame)
1102  (setq term-pending-frame nil)
1103  ;; Cua-mode's keybindings interfere with the term keybindings, disable it.
1104  (set (make-local-variable 'cua-mode) nil)
1105  (run-mode-hooks 'term-mode-hook)
1106  (when (featurep 'xemacs)
1107    (set-buffer-menubar
1108     (append current-menubar (list term-terminal-menu))))
1109  (or term-input-ring
1110      (setq term-input-ring (make-ring term-input-ring-size)))
1111  (term-update-mode-line))
1112
1113(defun term-reset-size (height width)
1114  (setq term-height height)
1115  (setq term-width width)
1116  (setq term-start-line-column nil)
1117  (setq term-current-row nil)
1118  (setq term-current-column nil)
1119  (term-set-scroll-region 0 height))
1120
1121;; Recursive routine used to check if any string in term-kill-echo-list
1122;; matches part of the buffer before point.
1123;; If so, delete that matched part of the buffer - this suppresses echo.
1124;; Also, remove that string from the term-kill-echo-list.
1125;; We *also* remove any older string on the list, as a sanity measure,
1126;; in case something gets out of sync.  (Except for type-ahead, there
1127;; should only be one element in the list.)
1128
1129(defun term-check-kill-echo-list ()
1130  (let ((cur term-kill-echo-list) (found nil) (save-point (point)))
1131    (unwind-protect
1132	(progn
1133	  (end-of-line)
1134	  (while cur
1135	    (let* ((str (car cur)) (len (length str)) (start (- (point) len)))
1136	      (if (and (>= start (point-min))
1137		       (string= str (buffer-substring start (point))))
1138		  (progn (delete-backward-char len)
1139			 (setq term-kill-echo-list (cdr cur))
1140			 (setq term-current-column nil)
1141			 (setq term-current-row nil)
1142			 (setq term-start-line-column nil)
1143			 (setq cur nil found t))
1144		(setq cur (cdr cur))))))
1145      (when (not found)
1146	(goto-char save-point)))
1147    found))
1148
1149(defun term-check-size (process)
1150  (when (or (/= term-height (1- (window-height)))
1151	    (/= term-width (term-window-width)))
1152    (term-reset-size (1- (window-height)) (term-window-width))
1153    (set-process-window-size process term-height term-width)))
1154
1155(defun term-send-raw-string (chars)
1156  (let ((proc (get-buffer-process (current-buffer))))
1157    (if (not proc)
1158	(error "Current buffer has no process")
1159      ;; Note that (term-current-row) must be called *after*
1160      ;; (point) has been updated to (process-mark proc).
1161      (goto-char (process-mark proc))
1162      (when (term-pager-enabled)
1163	(setq term-pager-count (term-current-row)))
1164      (process-send-string proc chars))))
1165
1166(defun term-send-raw ()
1167  "Send the last character typed through the terminal-emulator
1168without any interpretation."
1169  (interactive)
1170 ;; Convert `return' to C-m, etc.
1171  (when (and (symbolp last-input-char)
1172	     (get last-input-char 'ascii-character))
1173    (setq last-input-char (get last-input-char 'ascii-character)))
1174  (term-send-raw-string (make-string 1 last-input-char)))
1175
1176(defun term-send-raw-meta ()
1177  (interactive)
1178  (let ((char last-input-char))
1179    (when (symbolp last-input-char)
1180      ;; Convert `return' to C-m, etc.
1181      (let ((tmp (get char 'event-symbol-elements)))
1182	(when tmp
1183	  (setq char (car tmp)))
1184	(when (symbolp char)
1185	  (setq tmp (get char 'ascii-character))
1186	  (when tmp
1187	    (setq char tmp)))))
1188    (setq char (event-basic-type char))
1189    (term-send-raw-string (if (and (numberp char)
1190				   (> char 127)
1191				   (< char 256))
1192			      (make-string 1 char)
1193			    (format "\e%c" char)))))
1194
1195(defun term-mouse-paste (click arg)
1196  "Insert the last stretch of killed text at the position clicked on."
1197  (interactive "e\nP")
1198  (if (featurep 'xemacs)
1199      (term-send-raw-string
1200       (or (condition-case () (x-get-selection) (error ()))
1201	   (x-get-cutbuffer)
1202	   (error "No selection or cut buffer available")))
1203    ;; Give temporary modes such as isearch a chance to turn off.
1204    (run-hooks 'mouse-leave-buffer-hook)
1205    (setq this-command 'yank)
1206    (mouse-set-point click)
1207    (term-send-raw-string (current-kill (cond
1208					 ((listp arg) 0)
1209					 ((eq arg '-) -1)
1210					 (t (1- arg)))))))
1211
1212(defun term-paste ()
1213  "Insert the last stretch of killed text at point."
1214  (interactive)
1215   (term-send-raw-string (current-kill 0)))
1216
1217;; Which would be better:  "\e[A" or "\eOA"? readline accepts either.
1218;; For my configuration it's definitely better \eOA but YMMV. -mm
1219;; For example: vi works with \eOA while elm wants \e[A ...
1220;;; (terminfo: kcuu1, kcud1, kcuf1, kcub1, khome, kend, kpp, knp, kdch1, kbs)
1221(defun term-send-up    () (interactive) (term-send-raw-string "\eOA"))
1222(defun term-send-down  () (interactive) (term-send-raw-string "\eOB"))
1223(defun term-send-right () (interactive) (term-send-raw-string "\eOC"))
1224(defun term-send-left  () (interactive) (term-send-raw-string "\eOD"))
1225(defun term-send-home  () (interactive) (term-send-raw-string "\e[1~"))
1226(defun term-send-insert() (interactive) (term-send-raw-string "\e[2~"))
1227(defun term-send-end   () (interactive) (term-send-raw-string "\e[4~"))
1228(defun term-send-prior () (interactive) (term-send-raw-string "\e[5~"))
1229(defun term-send-next  () (interactive) (term-send-raw-string "\e[6~"))
1230(defun term-send-del   () (interactive) (term-send-raw-string "\e[3~"))
1231(defun term-send-backspace  () (interactive) (term-send-raw-string "\C-?"))
1232
1233(defun term-char-mode ()
1234  "Switch to char (\"raw\") sub-mode of term mode.
1235Each character you type is sent directly to the inferior without
1236intervention from Emacs, except for the escape character (usually C-c)."
1237  (interactive)
1238  ;; FIXME: Emit message? Cfr ilisp-raw-message
1239  (when (term-in-line-mode)
1240    (setq term-old-mode-map (current-local-map))
1241    (use-local-map term-raw-map)
1242
1243    ;; Send existing partial line to inferior (without newline).
1244    (let ((pmark (process-mark (get-buffer-process (current-buffer))))
1245	  (save-input-sender term-input-sender))
1246      (when (> (point) pmark)
1247	(unwind-protect
1248	    (progn
1249	      (setq term-input-sender
1250		    (symbol-function 'term-send-string))
1251	      (end-of-line)
1252	      (term-send-input))
1253	  (setq term-input-sender save-input-sender))))
1254    (term-update-mode-line)))
1255
1256(defun term-line-mode  ()
1257  "Switch to line (\"cooked\") sub-mode of term mode.
1258This means that Emacs editing commands work as normally, until
1259you type \\[term-send-input] which sends the current line to the inferior."
1260  (interactive)
1261  (when (term-in-char-mode)
1262    (use-local-map term-old-mode-map)
1263    (term-update-mode-line)))
1264
1265(defun term-update-mode-line ()
1266  (setq mode-line-process
1267	(if (term-in-char-mode)
1268	    (if (term-pager-enabled) '(": char page %s") '(": char %s"))
1269	  (if (term-pager-enabled) '(": line page %s") '(": line %s"))))
1270  (force-mode-line-update))
1271
1272(defun term-check-proc (buffer)
1273  "True if there is a process associated w/buffer BUFFER, and
1274it is alive (status RUN or STOP).  BUFFER can be either a buffer or the
1275name of one."
1276  (let ((proc (get-buffer-process buffer)))
1277    (and proc (memq (process-status proc) '(run stop)))))
1278
1279;;;###autoload
1280(defun make-term (name program &optional startfile &rest switches)
1281"Make a term process NAME in a buffer, running PROGRAM.
1282The name of the buffer is made by surrounding NAME with `*'s.
1283If there is already a running process in that buffer, it is not restarted.
1284Optional third arg STARTFILE is the name of a file to send the contents of to
1285the process.  Any more args are arguments to PROGRAM."
1286  (let ((buffer (get-buffer-create (concat "*" name "*"))))
1287    ;; If no process, or nuked process, crank up a new one and put buffer in
1288    ;; term mode.  Otherwise, leave buffer and existing process alone.
1289    (cond ((not (term-check-proc buffer))
1290	   (save-excursion
1291	     (set-buffer buffer)
1292	     (term-mode)) ; Install local vars, mode, keymap, ...
1293	   (term-exec buffer name program startfile switches)))
1294    buffer))
1295
1296;;;###autoload
1297(defun term (program)
1298  "Start a terminal-emulator in a new buffer.
1299The buffer is in Term mode; see `term-mode' for the
1300commands to use in that buffer.
1301
1302\\<term-raw-map>Type \\[switch-to-buffer] to switch to another buffer."
1303  (interactive (list (read-from-minibuffer "Run program: "
1304					   (or explicit-shell-file-name
1305					       (getenv "ESHELL")
1306					       (getenv "SHELL")
1307					       "/bin/sh"))))
1308  (set-buffer (make-term "terminal" program))
1309  (term-mode)
1310  (term-char-mode)
1311  (switch-to-buffer "*terminal*"))
1312
1313(defun term-exec (buffer name command startfile switches)
1314  "Start up a process in buffer for term modes.
1315Blasts any old process running in the buffer.  Doesn't set the buffer mode.
1316You can use this to cheaply run a series of processes in the same term
1317buffer.  The hook `term-exec-hook' is run after each exec."
1318  (save-excursion
1319    (set-buffer buffer)
1320    (let ((proc (get-buffer-process buffer)))	; Blast any old process.
1321      (when proc (delete-process proc)))
1322    ;; Crank up a new process
1323    (let ((proc (term-exec-1 name buffer command switches)))
1324      (make-local-variable 'term-ptyp)
1325      (setq term-ptyp process-connection-type) ; t if pty, nil if pipe.
1326      ;; Jump to the end, and set the process mark.
1327      (goto-char (point-max))
1328      (set-marker (process-mark proc) (point))
1329      (set-process-filter proc 'term-emulate-terminal)
1330      (set-process-sentinel proc 'term-sentinel)
1331      ;; Feed it the startfile.
1332      (cond (startfile
1333	     ;;This is guaranteed to wait long enough
1334	     ;;but has bad results if the term does not prompt at all
1335	     ;;	     (while (= size (buffer-size))
1336	     ;;	       (sleep-for 1))
1337	     ;;I hope 1 second is enough!
1338	     (sleep-for 1)
1339	     (goto-char (point-max))
1340	     (insert-file-contents startfile)
1341	     (setq startfile (buffer-substring (point) (point-max)))
1342	     (delete-region (point) (point-max))
1343	     (term-send-string proc startfile)))
1344    (run-hooks 'term-exec-hook)
1345    buffer)))
1346
1347(defun term-sentinel (proc msg)
1348  "Sentinel for term buffers.
1349The main purpose is to get rid of the local keymap."
1350  (let ((buffer (process-buffer proc)))
1351    (when (memq (process-status proc) '(signal exit))
1352      (if (null (buffer-name buffer))
1353	  ;; buffer killed
1354	  (set-process-buffer proc nil)
1355	(let ((obuf (current-buffer)))
1356	  ;; save-excursion isn't the right thing if
1357	  ;; process-buffer is current-buffer
1358	  (unwind-protect
1359	      (progn
1360		;; Write something in the compilation buffer
1361		;; and hack its mode line.
1362		(set-buffer buffer)
1363		;; Get rid of local keymap.
1364		(use-local-map nil)
1365		(term-handle-exit (process-name proc)
1366				  msg)
1367		;; Since the buffer and mode line will show that the
1368		;; process is dead, we can delete it now.  Otherwise it
1369		;; will stay around until M-x list-processes.
1370		(delete-process proc))
1371	    (set-buffer obuf)))
1372	))))
1373
1374(defun term-handle-exit (process-name msg)
1375  "Write process exit (or other change) message MSG in the current buffer."
1376  (let ((buffer-read-only nil)
1377	(omax (point-max))
1378	(opoint (point)))
1379    ;; Record where we put the message, so we can ignore it
1380    ;; later on.
1381    (goto-char omax)
1382    (insert ?\n "Process " process-name " " msg)
1383    ;; Force mode line redisplay soon.
1384    (force-mode-line-update)
1385    (when (and opoint (< opoint omax))
1386      (goto-char opoint))))
1387
1388
1389;;; Name to use for TERM.
1390;;; Using "emacs" loses, because bash disables editing if TERM == emacs.
1391(defvar term-term-name "eterm-color")
1392; Format string, usage:
1393; (format term-termcap-string emacs-term-name "TERMCAP=" 24 80)
1394(defvar term-termcap-format
1395  "%s%s:li#%d:co#%d:cl=\\E[H\\E[J:cd=\\E[J:bs:am:xn:cm=\\E[%%i%%d;%%dH\
1396:nd=\\E[C:up=\\E[A:ce=\\E[K:ho=\\E[H:pt\
1397:al=\\E[L:dl=\\E[M:DL=\\E[%%dM:AL=\\E[%%dL:cs=\\E[%%i%%d;%%dr:sf=^J\
1398:dc=\\E[P:DC=\\E[%%dP:IC=\\E[%%d@:im=\\E[4h:ei=\\E[4l:mi:\
1399:so=\\E[7m:se=\\E[m:us=\\E[4m:ue=\\E[m:md=\\E[1m:mr=\\E[7m:me=\\E[m\
1400:UP=\\E[%%dA:DO=\\E[%%dB:LE=\\E[%%dD:RI=\\E[%%dC\
1401:kl=\\EOD:kd=\\EOB:kr=\\EOC:ku=\\EOA:kN=\\E[6~:kP=\\E[5~:@7=\\E[4~:kh=\\E[1~\
1402:mk=\\E[8m:cb=\\E[1K:op=\\E[39;49m:Co#8:pa#64:AB=\\E[4%%dm:AF=\\E[3%%dm:cr=^M\
1403:bl=^G:do=^J:le=^H:ta=^I:se=\\E[27m:ue=\\E24m\
1404:kb=^?:kD=^[[3~:sc=\\E7:rc=\\E8:r1=\\Ec:"
1405;;; : -undefine ic
1406;;; don't define :te=\\E[2J\\E[?47l\\E8:ti=\\E7\\E[?47h\
1407  "Termcap capabilities supported.")
1408
1409;;; This auxiliary function cranks up the process for term-exec in
1410;;; the appropriate environment.
1411
1412(defun term-exec-1 (name buffer command switches)
1413  ;; We need to do an extra (fork-less) exec to run stty.
1414  ;; (This would not be needed if we had suitable Emacs primitives.)
1415  ;; The 'if ...; then shift; fi' hack is because Bourne shell
1416  ;; loses one arg when called with -c, and newer shells (bash,  ksh) don't.
1417  ;; Thus we add an extra dummy argument "..", and then remove it.
1418  (let ((process-environment
1419	 (nconc
1420	  (list
1421	   (format "TERM=%s" term-term-name)
1422	   (format "TERMINFO=%s" data-directory)
1423	   (format term-termcap-format "TERMCAP="
1424		   term-term-name term-height term-width)
1425	   ;; We are going to get rid of the binding for EMACS,
1426	   ;; probably in Emacs 23, because it breaks
1427	   ;; `./configure' of some packages that expect it to
1428	   ;; say where to find EMACS.
1429	   (format "EMACS=%s (term:%s)" emacs-version term-protocol-version)
1430	   (format "INSIDE_EMACS=%s,term:%s" emacs-version term-protocol-version)
1431	   (format "LINES=%d" term-height)
1432	   (format "COLUMNS=%d" term-width))
1433	  process-environment))
1434	(process-connection-type t)
1435	;; We should suppress conversion of end-of-line format.
1436	(inhibit-eol-conversion t)
1437	;; The process's output contains not just chars but also binary
1438	;; escape codes, so we need to see the raw output.  We will have to
1439	;; do the decoding by hand on the parts that are made of chars.
1440	(coding-system-for-read 'binary))
1441    (apply 'start-process name buffer
1442	   "/bin/sh" "-c"
1443	   (format "stty -nl echo rows %d columns %d sane 2>/dev/null;\
1444if [ $1 = .. ]; then shift; fi; exec \"$@\""
1445		   term-height term-width)
1446	   ".."
1447	   command switches)))
1448
1449
1450;;; Input history processing in a buffer
1451;;; ===========================================================================
1452;;; Useful input history functions, courtesy of the Ergo group.
1453
1454;;; Eleven commands:
1455;;; term-dynamic-list-input-ring	List history in help buffer.
1456;;; term-previous-input		Previous input...
1457;;; term-previous-matching-input	...matching a string.
1458;;; term-previous-matching-input-from-input ... matching the current input.
1459;;; term-next-input			Next input...
1460;;; term-next-matching-input		...matching a string.
1461;;; term-next-matching-input-from-input     ... matching the current input.
1462;;; term-backward-matching-input      Backwards input...
1463;;; term-forward-matching-input       ...matching a string.
1464;;; term-replace-by-expanded-history	Expand history at point;
1465;;;					replace with expanded history.
1466;;; term-magic-space			Expand history and insert space.
1467;;;
1468;;; Three functions:
1469;;; term-read-input-ring              Read into term-input-ring...
1470;;; term-write-input-ring             Write to term-input-ring-file-name.
1471;;; term-replace-by-expanded-history-before-point Workhorse function.
1472
1473(defun term-read-input-ring (&optional silent)
1474  "Sets the buffer's `term-input-ring' from a history file.
1475The name of the file is given by the variable `term-input-ring-file-name'.
1476The history ring is of size `term-input-ring-size', regardless of file size.
1477If `term-input-ring-file-name' is nil this function does nothing.
1478
1479If the optional argument SILENT is non-nil, we say nothing about a
1480failure to read the history file.
1481
1482This function is useful for major mode commands and mode hooks.
1483
1484The structure of the history file should be one input command per line,
1485with the most recent command last.
1486See also `term-input-ignoredups' and `term-write-input-ring'."
1487  (cond ((or (null term-input-ring-file-name)
1488	     (equal term-input-ring-file-name ""))
1489	 nil)
1490	((not (file-readable-p term-input-ring-file-name))
1491	 (or silent
1492	     (message "Cannot read history file %s"
1493		      term-input-ring-file-name)))
1494	(t
1495	 (let ((history-buf (get-buffer-create " *temp*"))
1496	       (file term-input-ring-file-name)
1497	       (count 0)
1498	       (ring (make-ring term-input-ring-size)))
1499	   (unwind-protect
1500	       (save-excursion
1501		 (set-buffer history-buf)
1502		 (widen)
1503		 (erase-buffer)
1504		 (insert-file-contents file)
1505		 ;; Save restriction in case file is already visited...
1506		 ;; Watch for those date stamps in history files!
1507		 (goto-char (point-max))
1508		 (while (and (< count term-input-ring-size)
1509			     (re-search-backward "^[ \t]*\\([^#\n].*\\)[ \t]*$"
1510						 nil t))
1511		   (let ((history (buffer-substring (match-beginning 1)
1512						    (match-end 1))))
1513		     (when (or (null term-input-ignoredups)
1514			       (ring-empty-p ring)
1515			       (not (string-equal (ring-ref ring 0) history)))
1516			 (ring-insert-at-beginning ring history)))
1517		   (setq count (1+ count))))
1518	     (kill-buffer history-buf))
1519	   (setq term-input-ring ring
1520		 term-input-ring-index nil)))))
1521
1522(defun term-write-input-ring ()
1523  "Writes the buffer's `term-input-ring' to a history file.
1524The name of the file is given by the variable `term-input-ring-file-name'.
1525The original contents of the file are lost if `term-input-ring' is not empty.
1526If `term-input-ring-file-name' is nil this function does nothing.
1527
1528Useful within process sentinels.
1529
1530See also `term-read-input-ring'."
1531  (cond ((or (null term-input-ring-file-name)
1532	     (equal term-input-ring-file-name "")
1533	     (null term-input-ring) (ring-empty-p term-input-ring))
1534	 nil)
1535	((not (file-writable-p term-input-ring-file-name))
1536	 (message "Cannot write history file %s" term-input-ring-file-name))
1537	(t
1538	 (let* ((history-buf (get-buffer-create " *Temp Input History*"))
1539		(ring term-input-ring)
1540		(file term-input-ring-file-name)
1541		(index (ring-length ring)))
1542	   ;; Write it all out into a buffer first.  Much faster, but messier,
1543	   ;; than writing it one line at a time.
1544	   (save-excursion
1545	     (set-buffer history-buf)
1546	     (erase-buffer)
1547	     (while (> index 0)
1548	       (setq index (1- index))
1549	       (insert (ring-ref ring index) ?\n))
1550	     (write-region (buffer-string) nil file nil 'no-message)
1551	     (kill-buffer nil))))))
1552
1553
1554(defun term-dynamic-list-input-ring ()
1555  "List in help buffer the buffer's input history."
1556  (interactive)
1557  (if (or (not (ring-p term-input-ring))
1558	  (ring-empty-p term-input-ring))
1559      (message "No history")
1560    (let ((history nil)
1561	  (history-buffer " *Input History*")
1562	  (index (1- (ring-length term-input-ring)))
1563	  (conf (current-window-configuration)))
1564      ;; We have to build up a list ourselves from the ring vector.
1565      (while (>= index 0)
1566	(setq history (cons (ring-ref term-input-ring index) history)
1567	      index (1- index)))
1568      ;; Change "completion" to "history reference"
1569      ;; to make the display accurate.
1570      (with-output-to-temp-buffer history-buffer
1571	(display-completion-list history)
1572	(set-buffer history-buffer)
1573	(forward-line 3)
1574	(while (search-backward "completion" nil 'move)
1575	  (replace-match "history reference")))
1576      (sit-for 0)
1577      (message "Hit space to flush")
1578      (let ((ch (read-event)))
1579	(if (eq ch ?\s)
1580	    (set-window-configuration conf)
1581	  (setq unread-command-events (list ch)))))))
1582
1583
1584(defun term-regexp-arg (prompt)
1585  ;; Return list of regexp and prefix arg using PROMPT.
1586  (let* (;; Don't clobber this.
1587	 (last-command last-command)
1588	 (regexp (read-from-minibuffer prompt nil nil nil
1589				       'minibuffer-history-search-history)))
1590    (list (if (string-equal regexp "")
1591	      (setcar minibuffer-history-search-history
1592		      (nth 1 minibuffer-history-search-history))
1593	    regexp)
1594	  (prefix-numeric-value current-prefix-arg))))
1595
1596(defun term-search-arg (arg)
1597  ;; First make sure there is a ring and that we are after the process mark
1598  (cond ((not (term-after-pmark-p))
1599	 (error "Not at command line"))
1600	((or (null term-input-ring)
1601	     (ring-empty-p term-input-ring))
1602	 (error "Empty input ring"))
1603	((zerop arg)
1604	 ;; arg of zero resets search from beginning, and uses arg of 1
1605	 (setq term-input-ring-index nil)
1606	 1)
1607	(t
1608	 arg)))
1609
1610(defun term-search-start (arg)
1611  ;; Index to start a directional search, starting at term-input-ring-index
1612  (if term-input-ring-index
1613      ;; If a search is running, offset by 1 in direction of arg
1614      (mod (+ term-input-ring-index (if (> arg 0) 1 -1))
1615	   (ring-length term-input-ring))
1616    ;; For a new search, start from beginning or end, as appropriate
1617    (if (>= arg 0)
1618	0				       ; First elt for forward search
1619      (1- (ring-length term-input-ring)))))  ; Last elt for backward search
1620
1621(defun term-previous-input-string (arg)
1622  "Return the string ARG places along the input ring.
1623Moves relative to `term-input-ring-index'."
1624  (ring-ref term-input-ring (if term-input-ring-index
1625				  (mod (+ arg term-input-ring-index)
1626				       (ring-length term-input-ring))
1627				arg)))
1628
1629(defun term-previous-input (arg)
1630  "Cycle backwards through input history."
1631  (interactive "*p")
1632  (term-previous-matching-input "." arg))
1633
1634(defun term-next-input (arg)
1635  "Cycle forwards through input history."
1636  (interactive "*p")
1637  (term-previous-input (- arg)))
1638
1639(defun term-previous-matching-input-string (regexp arg)
1640  "Return the string matching REGEXP ARG places along the input ring.
1641Moves relative to `term-input-ring-index'."
1642  (let* ((pos (term-previous-matching-input-string-position regexp arg)))
1643    (when pos (ring-ref term-input-ring pos))))
1644
1645(defun term-previous-matching-input-string-position
1646  (regexp arg &optional start)
1647  "Return the index matching REGEXP ARG places along the input ring.
1648Moves relative to START, or `term-input-ring-index'."
1649  (when (or (not (ring-p term-input-ring))
1650	    (ring-empty-p term-input-ring))
1651    (error "No history"))
1652  (let* ((len (ring-length term-input-ring))
1653	 (motion (if (> arg 0) 1 -1))
1654	 (n (mod (- (or start (term-search-start arg)) motion) len))
1655	 (tried-each-ring-item nil)
1656	 (prev nil))
1657    ;; Do the whole search as many times as the argument says.
1658    (while (and (/= arg 0) (not tried-each-ring-item))
1659      ;; Step once.
1660      (setq prev n
1661	    n (mod (+ n motion) len))
1662      ;; If we haven't reached a match, step some more.
1663      (while (and (< n len) (not tried-each-ring-item)
1664		  (not (string-match regexp (ring-ref term-input-ring n))))
1665	(setq n (mod (+ n motion) len)
1666	      ;; If we have gone all the way around in this search.
1667	      tried-each-ring-item (= n prev)))
1668      (setq arg (if (> arg 0) (1- arg) (1+ arg))))
1669    ;; Now that we know which ring element to use, if we found it, return that.
1670    (when (string-match regexp (ring-ref term-input-ring n))
1671      n)))
1672
1673(defun term-previous-matching-input (regexp arg)
1674  "Search backwards through input history for match for REGEXP.
1675\(Previous history elements are earlier commands.)
1676With prefix argument N, search for Nth previous match.
1677If N is negative, find the next or Nth next match."
1678  (interactive (term-regexp-arg "Previous input matching (regexp): "))
1679  (setq arg (term-search-arg arg))
1680  (let ((pos (term-previous-matching-input-string-position regexp arg)))
1681    ;; Has a match been found?
1682    (if (null pos)
1683	(error "Not found")
1684      (setq term-input-ring-index pos)
1685      (message "History item: %d" (1+ pos))
1686      (delete-region
1687       ;; Can't use kill-region as it sets this-command
1688       (process-mark (get-buffer-process (current-buffer))) (point))
1689      (insert (ring-ref term-input-ring pos)))))
1690
1691(defun term-next-matching-input (regexp arg)
1692  "Search forwards through input history for match for REGEXP.
1693\(Later history elements are more recent commands.)
1694With prefix argument N, search for Nth following match.
1695If N is negative, find the previous or Nth previous match."
1696  (interactive (term-regexp-arg "Next input matching (regexp): "))
1697  (term-previous-matching-input regexp (- arg)))
1698
1699(defun term-previous-matching-input-from-input (arg)
1700  "Search backwards through input history for match for current input.
1701\(Previous history elements are earlier commands.)
1702With prefix argument N, search for Nth previous match.
1703If N is negative, search forwards for the -Nth following match."
1704  (interactive "p")
1705  (when (not (memq last-command '(term-previous-matching-input-from-input
1706				term-next-matching-input-from-input)))
1707    ;; Starting a new search
1708    (setq term-matching-input-from-input-string
1709	  (buffer-substring
1710	   (process-mark (get-buffer-process (current-buffer)))
1711	   (point))
1712	  term-input-ring-index nil))
1713  (term-previous-matching-input
1714   (concat "^" (regexp-quote term-matching-input-from-input-string))
1715   arg))
1716
1717(defun term-next-matching-input-from-input (arg)
1718  "Search forwards through input history for match for current input.
1719\(Following history elements are more recent commands.)
1720With prefix argument N, search for Nth following match.
1721If N is negative, search backwards for the -Nth previous match."
1722  (interactive "p")
1723  (term-previous-matching-input-from-input (- arg)))
1724
1725
1726(defun term-replace-by-expanded-history (&optional silent)
1727  "Expand input command history references before point.
1728Expansion is dependent on the value of `term-input-autoexpand'.
1729
1730This function depends on the buffer's idea of the input history, which may not
1731match the command interpreter's idea, assuming it has one.
1732
1733Assumes history syntax is like typical Un*x shells'.  However, since Emacs
1734cannot know the interpreter's idea of input line numbers, assuming it has one,
1735it cannot expand absolute input line number references.
1736
1737If the optional argument SILENT is non-nil, never complain
1738even if history reference seems erroneous.
1739
1740See `term-magic-space' and `term-replace-by-expanded-history-before-point'.
1741
1742Returns t if successful."
1743  (interactive)
1744  (when (and term-input-autoexpand
1745	     (string-match "[!^]" (funcall term-get-old-input))
1746	     (save-excursion (beginning-of-line)
1747			     (looking-at term-prompt-regexp)))
1748    ;; Looks like there might be history references in the command.
1749    (let ((previous-modified-tick (buffer-modified-tick)))
1750      (message "Expanding history references...")
1751      (term-replace-by-expanded-history-before-point silent)
1752      (/= previous-modified-tick (buffer-modified-tick)))))
1753
1754
1755(defun term-replace-by-expanded-history-before-point (silent)
1756  "Expand directory stack reference before point.
1757See `term-replace-by-expanded-history'.  Returns t if successful."
1758  (save-excursion
1759    (let ((toend (- (save-excursion (end-of-line nil) (point)) (point)))
1760	  (start (progn (term-bol nil) (point))))
1761      (while (progn
1762	       (skip-chars-forward "^!^"
1763				   (save-excursion
1764				     (end-of-line nil) (- (point) toend)))
1765	       (< (point)
1766		  (save-excursion
1767		    (end-of-line nil) (- (point) toend))))
1768	;; This seems a bit complex.  We look for references such as !!, !-num,
1769	;; !foo, !?foo, !{bar}, !?{bar}, ^oh, ^my^, ^god^it, ^never^ends^.
1770	;; If that wasn't enough, the plings can be suffixed with argument
1771	;; range specifiers.
1772	;; Argument ranges are complex too, so we hive off the input line,
1773	;; referenced with plings, with the range string to `term-args'.
1774	(setq term-input-ring-index nil)
1775	(cond ((or (= (preceding-char) ?\\)
1776		   (term-within-quotes start (point)))
1777	       ;; The history is quoted, or we're in quotes.
1778	       (goto-char (1+ (point))))
1779	      ((looking-at "![0-9]+\\($\\|[^-]\\)")
1780	       ;; We cannot know the interpreter's idea of input line numbers.
1781	       (goto-char (match-end 0))
1782	       (message "Absolute reference cannot be expanded"))
1783	      ((looking-at "!-\\([0-9]+\\)\\(:?[0-9^$*-]+\\)?")
1784	       ;; Just a number of args from `number' lines backward.
1785	       (let ((number (1- (string-to-number
1786				  (buffer-substring (match-beginning 1)
1787						    (match-end 1))))))
1788		 (if (<= number (ring-length term-input-ring))
1789		     (progn
1790		       (replace-match
1791			(term-args (term-previous-input-string number)
1792				     (match-beginning 2) (match-end 2))
1793			t t)
1794		       (setq term-input-ring-index number)
1795		       (message "History item: %d" (1+ number)))
1796		   (goto-char (match-end 0))
1797		   (message "Relative reference exceeds input history size"))))
1798	      ((or (looking-at "!!?:?\\([0-9^$*-]+\\)") (looking-at "!!"))
1799	       ;; Just a number of args from the previous input line.
1800	       (replace-match
1801		(term-args (term-previous-input-string 0)
1802			     (match-beginning 1) (match-end 1))
1803		t t)
1804	       (message "History item: previous"))
1805	      ((looking-at
1806		"!\\??\\({\\(.+\\)}\\|\\(\\sw+\\)\\)\\(:?[0-9^$*-]+\\)?")
1807	       ;; Most recent input starting with or containing (possibly
1808	       ;; protected) string, maybe just a number of args.  Phew.
1809	       (let* ((mb1 (match-beginning 1)) (me1 (match-end 1))
1810		      (mb2 (match-beginning 2)) (me2 (match-end 2))
1811		      (exp (buffer-substring (or mb2 mb1) (or me2 me1)))
1812		      (pref (if (save-match-data (looking-at "!\\?")) "" "^"))
1813		      (pos (save-match-data
1814			     (term-previous-matching-input-string-position
1815			      (concat pref (regexp-quote exp)) 1))))
1816		 (if (null pos)
1817		     (progn
1818		       (goto-char (match-end 0))
1819		       (or silent
1820			   (progn (message "Not found")
1821				  (ding))))
1822		   (setq term-input-ring-index pos)
1823		   (replace-match
1824		    (term-args (ring-ref term-input-ring pos)
1825				 (match-beginning 4) (match-end 4))
1826		    t t)
1827		   (message "History item: %d" (1+ pos)))))
1828	      ((looking-at "\\^\\([^^]+\\)\\^?\\([^^]*\\)\\^?")
1829	       ;; Quick substitution on the previous input line.
1830	       (let ((old (buffer-substring (match-beginning 1) (match-end 1)))
1831		     (new (buffer-substring (match-beginning 2) (match-end 2)))
1832		     (pos nil))
1833		 (replace-match (term-previous-input-string 0) t t)
1834		 (setq pos (point))
1835		 (goto-char (match-beginning 0))
1836		 (if (not (search-forward old pos t))
1837		     (or silent
1838			 (error "Not found"))
1839		   (replace-match new t t)
1840		   (message "History item: substituted"))))
1841	      (t
1842	       (goto-char (match-end 0))))))))
1843
1844
1845(defun term-magic-space (arg)
1846  "Expand input history references before point and insert ARG spaces.
1847A useful command to bind to SPC.  See `term-replace-by-expanded-history'."
1848  (interactive "p")
1849  (term-replace-by-expanded-history)
1850  (self-insert-command arg))
1851
1852(defun term-within-quotes (beg end)
1853  "Return t if the number of quotes between BEG and END is odd.
1854Quotes are single and double."
1855  (let ((countsq (term-how-many-region "\\(^\\|[^\\\\]\\)\'" beg end))
1856	(countdq (term-how-many-region "\\(^\\|[^\\\\]\\)\"" beg end)))
1857    (or (= (mod countsq 2) 1) (= (mod countdq 2) 1))))
1858
1859(defun term-how-many-region (regexp beg end)
1860  "Return number of matches for REGEXP from BEG to END."
1861  (let ((count 0))
1862    (save-excursion
1863      (save-match-data
1864	(goto-char beg)
1865	(while (re-search-forward regexp end t)
1866	  (setq count (1+ count)))))
1867    count))
1868
1869(defun term-args (string begin end)
1870  ;; From STRING, return the args depending on the range specified in the text
1871  ;; from BEGIN to END.  If BEGIN is nil, assume all args.  Ignore leading `:'.
1872  ;; Range can be x-y, x-, -y, where x/y can be [0-9], *, ^, $.
1873  (save-match-data
1874    (if (null begin)
1875	(term-arguments string 0 nil)
1876      (let* ((range (buffer-substring
1877		     (if (eq (char-after begin) ?:) (1+ begin) begin) end))
1878	     (nth (cond ((string-match "^[*^]" range) 1)
1879			((string-match "^-" range) 0)
1880			((string-equal range "$") nil)
1881			(t (string-to-number range))))
1882	     (mth (cond ((string-match "[-*$]$" range) nil)
1883			((string-match "-" range)
1884			 (string-to-number (substring range (match-end 0))))
1885			(t nth))))
1886	(term-arguments string nth mth)))))
1887
1888;; Return a list of arguments from ARG.  Break it up at the
1889;; delimiters in term-delimiter-argument-list.  Returned list is backwards.
1890(defun term-delim-arg (arg)
1891  (if (null term-delimiter-argument-list)
1892      (list arg)
1893    (let ((args nil)
1894	  (pos 0)
1895	  (len (length arg)))
1896      (while (< pos len)
1897	(let ((char (aref arg pos))
1898	      (start pos))
1899	  (if (memq char term-delimiter-argument-list)
1900	      (while (and (< pos len) (eq (aref arg pos) char))
1901		(setq pos (1+ pos)))
1902	    (while (and (< pos len)
1903			(not (memq (aref arg pos)
1904				   term-delimiter-argument-list)))
1905	      (setq pos (1+ pos))))
1906	  (setq args (cons (substring arg start pos) args))))
1907      args)))
1908
1909(defun term-arguments (string nth mth)
1910  "Return from STRING the NTH to MTH arguments.
1911NTH and/or MTH can be nil, which means the last argument.
1912Returned arguments are separated by single spaces.
1913We assume whitespace separates arguments, except within quotes.
1914Also, a run of one or more of a single character
1915in `term-delimiter-argument-list' is a separate argument.
1916Argument 0 is the command name."
1917  (let ((argpart "[^ \n\t\"'`]+\\|\\(\"[^\"]*\"\\|'[^']*'\\|`[^`]*`\\)")
1918	(args ()) (pos 0)
1919	(count 0)
1920	beg str quotes)
1921    ;; Build a list of all the args until we have as many as we want.
1922    (while (and (or (null mth) (<= count mth))
1923		(string-match argpart string pos))
1924      (if (and beg (= pos (match-beginning 0)))
1925	  ;; It's contiguous, part of the same arg.
1926	  (setq pos (match-end 0)
1927		quotes (or quotes (match-beginning 1)))
1928	;; It's a new separate arg.
1929	(if beg
1930	    ;; Put the previous arg, if there was one, onto ARGS.
1931	    (setq str (substring string beg pos)
1932		  args (if quotes (cons str args)
1933			 (nconc (term-delim-arg str) args))
1934		  count (1+ count)))
1935	(setq quotes (match-beginning 1))
1936	(setq beg (match-beginning 0))
1937	(setq pos (match-end 0))))
1938    (if beg
1939	(setq str (substring string beg pos)
1940	      args (if quotes (cons str args)
1941		     (nconc (term-delim-arg str) args))
1942	      count (1+ count)))
1943    (let ((n (or nth (1- count)))
1944	  (m (if mth (1- (- count mth)) 0)))
1945      (mapconcat
1946       (function (lambda (a) a)) (nthcdr n (nreverse (nthcdr m args))) " "))))
1947
1948;;;
1949;;; Input processing stuff [line mode]
1950;;;
1951
1952(defun term-send-input ()
1953  "Send input to process.
1954After the process output mark, sends all text from the process mark to
1955point as input to the process.  Before the process output mark, calls value
1956of variable term-get-old-input to retrieve old input, copies it to the
1957process mark, and sends it.  A terminal newline is also inserted into the
1958buffer and sent to the process.  The list of function names contained in the
1959value of `term-input-filter-functions' is called on the input before sending
1960it.  The input is entered into the input history ring, if the value of variable
1961term-input-filter returns non-nil when called on the input.
1962
1963Any history reference may be expanded depending on the value of the variable
1964`term-input-autoexpand'.  The list of function names contained in the value
1965of `term-input-filter-functions' is called on the input before sending it.
1966The input is entered into the input history ring, if the value of variable
1967`term-input-filter' returns non-nil when called on the input.
1968
1969If variable `term-eol-on-send' is non-nil, then point is moved to the
1970end of line before sending the input.
1971
1972The values of `term-get-old-input', `term-input-filter-functions', and
1973`term-input-filter' are chosen according to the command interpreter running
1974in the buffer.  E.g.,
1975
1976If the interpreter is the csh,
1977    term-get-old-input is the default: take the current line, discard any
1978        initial string matching regexp term-prompt-regexp.
1979    term-input-filter-functions monitors input for \"cd\", \"pushd\", and
1980	\"popd\" commands.  When it sees one, it cd's the buffer.
1981    term-input-filter is the default: returns t if the input isn't all white
1982	space.
1983
1984If the term is Lucid Common Lisp,
1985    term-get-old-input snarfs the sexp ending at point.
1986    term-input-filter-functions does nothing.
1987    term-input-filter returns nil if the input matches input-filter-regexp,
1988        which matches (1) all whitespace (2) :a, :c, etc.
1989
1990Similarly for Soar, Scheme, etc."
1991  (interactive)
1992  ;; Note that the input string does not include its terminal newline.
1993  (let ((proc (get-buffer-process (current-buffer))))
1994    (if (not proc) (error "Current buffer has no process")
1995      (let* ((pmark (process-mark proc))
1996	     (pmark-val (marker-position pmark))
1997	     (input-is-new (>= (point) pmark-val))
1998	     (intxt (if input-is-new
1999			(progn (if term-eol-on-send (end-of-line))
2000			       (buffer-substring pmark (point)))
2001		      (funcall term-get-old-input)))
2002	     (input (if (not (eq term-input-autoexpand 'input))
2003			;; Just whatever's already there
2004			intxt
2005		      ;; Expand and leave it visible in buffer
2006		      (term-replace-by-expanded-history t)
2007		      (buffer-substring pmark (point))))
2008	     (history (if (not (eq term-input-autoexpand 'history))
2009			  input
2010			;; This is messy 'cos ultimately the original
2011			;; functions used do insertion, rather than return
2012			;; strings.  We have to expand, then insert back.
2013			(term-replace-by-expanded-history t)
2014			(let ((copy (buffer-substring pmark (point))))
2015			  (delete-region pmark (point))
2016			  (insert input)
2017			  copy))))
2018	(when (term-pager-enabled)
2019	  (save-excursion
2020	    (goto-char (process-mark proc))
2021	    (setq term-pager-count (term-current-row))))
2022	(when (and (funcall term-input-filter history)
2023		   (or (null term-input-ignoredups)
2024		       (not (ring-p term-input-ring))
2025		       (ring-empty-p term-input-ring)
2026		       (not (string-equal (ring-ref term-input-ring 0)
2027					  history))))
2028	  (ring-insert term-input-ring history))
2029	(let ((functions term-input-filter-functions))
2030	  (while functions
2031	    (funcall (car functions) (concat input "\n"))
2032	    (setq functions (cdr functions))))
2033	(setq term-input-ring-index nil)
2034
2035	;; Update the markers before we send the input
2036	;; in case we get output amidst sending the input.
2037	(set-marker term-last-input-start pmark)
2038	(set-marker term-last-input-end (point))
2039	(when input-is-new
2040	  ;; Set up to delete, because inferior should echo.
2041	  (when (marker-buffer term-pending-delete-marker)
2042	    (delete-region term-pending-delete-marker pmark))
2043	  (set-marker term-pending-delete-marker pmark-val)
2044	  (set-marker (process-mark proc) (point)))
2045	(goto-char pmark)
2046	(funcall term-input-sender proc input)))))
2047
2048(defun term-get-old-input-default ()
2049  "Default for `term-get-old-input'.
2050Take the current line, and discard any initial text matching
2051`term-prompt-regexp'."
2052  (save-excursion
2053    (beginning-of-line)
2054    (term-skip-prompt)
2055    (let ((beg (point)))
2056      (end-of-line)
2057      (buffer-substring beg (point)))))
2058
2059(defun term-copy-old-input ()
2060  "Insert after prompt old input at point as new input to be edited.
2061Calls `term-get-old-input' to get old input."
2062  (interactive)
2063  (let ((input (funcall term-get-old-input))
2064 	(process (get-buffer-process (current-buffer))))
2065    (if (not process)
2066	(error "Current buffer has no process")
2067      (goto-char (process-mark process))
2068      (insert input))))
2069
2070(defun term-skip-prompt ()
2071  "Skip past the text matching regexp `term-prompt-regexp'.
2072If this takes us past the end of the current line, don't skip at all."
2073  (let ((eol (save-excursion (end-of-line) (point))))
2074    (when (and (looking-at term-prompt-regexp)
2075	       (<= (match-end 0) eol))
2076      (goto-char (match-end 0)))))
2077
2078
2079(defun term-after-pmark-p ()
2080  "Is point after the process output marker?"
2081  ;; Since output could come into the buffer after we looked at the point
2082  ;; but before we looked at the process marker's value, we explicitly
2083  ;; serialise.  This is just because I don't know whether or not Emacs
2084  ;; services input during execution of lisp commands.
2085  (let ((proc-pos (marker-position
2086		   (process-mark (get-buffer-process (current-buffer))))))
2087    (<= proc-pos (point))))
2088
2089(defun term-simple-send (proc string)
2090  "Default function for sending to PROC input STRING.
2091This just sends STRING plus a newline.  To override this,
2092set the hook `term-input-sender'."
2093  (term-send-string proc string)
2094  (term-send-string proc "\n"))
2095
2096(defun term-bol (arg)
2097  "Goes to the beginning of line, then skips past the prompt, if any.
2098If a prefix argument is given (\\[universal-argument]), then no prompt skip
2099-- go straight to column 0.
2100
2101The prompt skip is done by skipping text matching the regular expression
2102`term-prompt-regexp', a buffer local variable."
2103  (interactive "P")
2104  (beginning-of-line)
2105  (when (null arg) (term-skip-prompt)))
2106
2107;;; These two functions are for entering text you don't want echoed or
2108;;; saved -- typically passwords to ftp, telnet, or somesuch.
2109;;; Just enter m-x term-send-invisible and type in your line.
2110
2111(defun term-read-noecho (prompt &optional stars)
2112  "Read a single line of text from user without echoing, and return it.
2113Prompt with argument PROMPT, a string.  Optional argument STARS causes
2114input to be echoed with '*' characters on the prompt line.  Input ends with
2115RET, LFD, or ESC.  DEL or C-h rubs out.  C-u kills line.  C-g aborts (if
2116`inhibit-quit' is set because e.g. this function was called from a process
2117filter and C-g is pressed, this function returns nil rather than a string).
2118
2119Note that the keystrokes comprising the text can still be recovered
2120\(temporarily) with \\[view-lossage].  This may be a security bug for some
2121applications."
2122  (let ((ans "")
2123	(c 0)
2124	(echo-keystrokes 0)
2125	(cursor-in-echo-area t)
2126        (done nil))
2127    (while (not done)
2128      (if stars
2129          (message "%s%s" prompt (make-string (length ans) ?*))
2130        (message "%s" prompt))
2131      (setq c (read-char))
2132      (cond ((= c ?\C-g)
2133             ;; This function may get called from a process filter, where
2134             ;; inhibit-quit is set.  In later versions of Emacs read-char
2135             ;; may clear quit-flag itself and return C-g.  That would make
2136             ;; it impossible to quit this loop in a simple way, so
2137             ;; re-enable it here (for backward-compatibility the check for
2138             ;; quit-flag below would still be necessary, so this seems
2139             ;; like the simplest way to do things).
2140             (setq quit-flag t
2141                   done t))
2142            ((or (= c ?\r) (= c ?\n) (= c ?\e))
2143             (setq done t))
2144            ((= c ?\C-u)
2145             (setq ans ""))
2146            ((and (/= c ?\b) (/= c ?\177))
2147             (setq ans (concat ans (char-to-string c))))
2148            ((> (length ans) 0)
2149             (setq ans (substring ans 0 -1)))))
2150    (if quit-flag
2151        ;; Emulate a true quit, except that we have to return a value.
2152        (prog1
2153            (setq quit-flag nil)
2154          (message "Quit")
2155          (beep t))
2156      (message "")
2157      ans)))
2158
2159(defun term-send-invisible (str &optional proc)
2160  "Read a string without echoing.
2161Then send it to the process running in the current buffer.  A new-line
2162is additionally sent.  String is not saved on term input history list.
2163Security bug: your string can still be temporarily recovered with
2164\\[view-lossage]."
2165  (interactive "P") ; Defeat snooping via C-x esc
2166  (when (not (stringp str))
2167    (setq str (term-read-noecho "Non-echoed text: " t)))
2168  (when (not proc)
2169    (setq proc (get-buffer-process (current-buffer))))
2170  (if (not proc) (error "Current buffer has no process")
2171    (setq term-kill-echo-list (nconc term-kill-echo-list
2172				     (cons str nil)))
2173    (term-send-string proc str)
2174    (term-send-string proc "\n")))
2175
2176
2177;;; Low-level process communication
2178
2179(defvar term-input-chunk-size 512
2180  "*Long inputs send to term processes are broken up into chunks of this size.
2181If your process is choking on big inputs, try lowering the value.")
2182
2183(defun term-send-string (proc str)
2184  "Send to PROC the contents of STR as input.
2185This is equivalent to `process-send-string', except that long input strings
2186are broken up into chunks of size `term-input-chunk-size'.  Processes
2187are given a chance to output between chunks.  This can help prevent processes
2188from hanging when you send them long inputs on some OS's."
2189  (let* ((len (length str))
2190	 (i (min len term-input-chunk-size)))
2191    (process-send-string proc (substring str 0 i))
2192    (while (< i len)
2193      (let ((next-i (+ i term-input-chunk-size)))
2194	(accept-process-output)
2195	(process-send-string proc (substring str i (min len next-i)))
2196	(setq i next-i)))))
2197
2198(defun term-send-region (proc start end)
2199  "Send to PROC the region delimited by START and END.
2200This is a replacement for `process-send-region' that tries to keep
2201your process from hanging on long inputs.  See `term-send-string'."
2202  (term-send-string proc (buffer-substring start end)))
2203
2204
2205;;; Random input hackage
2206
2207(defun term-kill-output ()
2208  "Kill all output from interpreter since last input."
2209  (interactive)
2210  (let ((pmark (process-mark (get-buffer-process (current-buffer)))))
2211    (kill-region term-last-input-end pmark)
2212    (goto-char pmark)
2213    (insert "*** output flushed ***\n")
2214    (set-marker pmark (point))))
2215
2216(defun term-show-output ()
2217  "Display start of this batch of interpreter output at top of window.
2218Sets mark to the value of point when this command is run."
2219  (interactive)
2220  (goto-char term-last-input-end)
2221  (backward-char)
2222  (beginning-of-line)
2223  (set-window-start (selected-window) (point))
2224  (end-of-line))
2225
2226(defun term-interrupt-subjob ()
2227  "Interrupt the current subjob."
2228  (interactive)
2229  (interrupt-process nil term-ptyp))
2230
2231(defun term-kill-subjob ()
2232  "Send kill signal to the current subjob."
2233  (interactive)
2234  (kill-process nil term-ptyp))
2235
2236(defun term-quit-subjob ()
2237  "Send quit signal to the current subjob."
2238  (interactive)
2239  (quit-process nil term-ptyp))
2240
2241(defun term-stop-subjob ()
2242  "Stop the current subjob.
2243WARNING: if there is no current subjob, you can end up suspending
2244the top-level process running in the buffer.  If you accidentally do
2245this, use \\[term-continue-subjob] to resume the process.  (This
2246is not a problem with most shells, since they ignore this signal.)"
2247  (interactive)
2248  (stop-process nil term-ptyp))
2249
2250(defun term-continue-subjob ()
2251  "Send CONT signal to process buffer's process group.
2252Useful if you accidentally suspend the top-level process."
2253  (interactive)
2254  (continue-process nil term-ptyp))
2255
2256(defun term-kill-input ()
2257  "Kill all text from last stuff output by interpreter to point."
2258  (interactive)
2259  (let* ((pmark (process-mark (get-buffer-process (current-buffer))))
2260	 (p-pos (marker-position pmark)))
2261    (when (> (point) p-pos)
2262      (kill-region pmark (point)))))
2263
2264(defun term-delchar-or-maybe-eof (arg)
2265  "Delete ARG characters forward, or send an EOF to process if at end of
2266buffer."
2267  (interactive "p")
2268  (if (eobp)
2269      (process-send-eof)
2270    (delete-char arg)))
2271
2272(defun term-send-eof ()
2273  "Send an EOF to the current buffer's process."
2274  (interactive)
2275  (process-send-eof))
2276
2277(defun term-backward-matching-input (regexp arg)
2278  "Search backward through buffer for match for REGEXP.
2279Matches are searched for on lines that match `term-prompt-regexp'.
2280With prefix argument N, search for Nth previous match.
2281If N is negative, find the next or Nth next match."
2282  (interactive (term-regexp-arg "Backward input matching (regexp): "))
2283  (let* ((re (concat term-prompt-regexp ".*" regexp))
2284	 (pos (save-excursion (end-of-line (if (> arg 0) 0 1))
2285			      (when (re-search-backward re nil t arg)
2286				(point)))))
2287    (if (null pos)
2288	(progn (message "Not found")
2289	       (ding))
2290      (goto-char pos)
2291      (term-bol nil))))
2292
2293(defun term-forward-matching-input (regexp arg)
2294  "Search forward through buffer for match for REGEXP.
2295Matches are searched for on lines that match `term-prompt-regexp'.
2296With prefix argument N, search for Nth following match.
2297If N is negative, find the previous or Nth previous match."
2298  (interactive (term-regexp-arg "Forward input matching (regexp): "))
2299  (term-backward-matching-input regexp (- arg)))
2300
2301
2302(defun term-next-prompt (n)
2303  "Move to end of Nth next prompt in the buffer.
2304See `term-prompt-regexp'."
2305  (interactive "p")
2306  (let ((paragraph-start term-prompt-regexp))
2307    (end-of-line (if (> n 0) 1 0))
2308    (forward-paragraph n)
2309    (term-skip-prompt)))
2310
2311(defun term-previous-prompt (n)
2312  "Move to end of Nth previous prompt in the buffer.
2313See `term-prompt-regexp'."
2314  (interactive "p")
2315  (term-next-prompt (- n)))
2316
2317;;; Support for source-file processing commands.
2318;;;============================================================================
2319;;; Many command-interpreters (e.g., Lisp, Scheme, Soar) have
2320;;; commands that process files of source text (e.g. loading or compiling
2321;;; files).  So the corresponding process-in-a-buffer modes have commands
2322;;; for doing this (e.g., lisp-load-file).  The functions below are useful
2323;;; for defining these commands.
2324;;;
2325;;; Alas, these guys don't do exactly the right thing for Lisp, Scheme
2326;;; and Soar, in that they don't know anything about file extensions.
2327;;; So the compile/load interface gets the wrong default occasionally.
2328;;; The load-file/compile-file default mechanism could be smarter -- it
2329;;; doesn't know about the relationship between filename extensions and
2330;;; whether the file is source or executable.  If you compile foo.lisp
2331;;; with compile-file, then the next load-file should use foo.bin for
2332;;; the default, not foo.lisp.  This is tricky to do right, particularly
2333;;; because the extension for executable files varies so much (.o, .bin,
2334;;; .lbin, .mo, .vo, .ao, ...).
2335
2336
2337;;; TERM-SOURCE-DEFAULT -- determines defaults for source-file processing
2338;;; commands.
2339;;;
2340;;; TERM-CHECK-SOURCE -- if FNAME is in a modified buffer, asks you if you
2341;;; want to save the buffer before issuing any process requests to the command
2342;;; interpreter.
2343;;;
2344;;; TERM-GET-SOURCE -- used by the source-file processing commands to prompt
2345;;; for the file to process.
2346
2347;;; (TERM-SOURCE-DEFAULT previous-dir/file source-modes)
2348;;;============================================================================
2349;;; This function computes the defaults for the load-file and compile-file
2350;;; commands for tea, soar, cmulisp, and cmuscheme modes.
2351;;;
2352;;; - PREVIOUS-DIR/FILE is a pair (directory . filename) from the last
2353;;; source-file processing command, or nil if there hasn't been one yet.
2354;;; - SOURCE-MODES is a list used to determine what buffers contain source
2355;;; files: if the major mode of the buffer is in SOURCE-MODES, it's source.
2356;;; Typically, (lisp-mode) or (scheme-mode).
2357;;;
2358;;; If the command is given while the cursor is inside a string, *and*
2359;;; the string is an existing filename, *and* the filename is not a directory,
2360;;; then the string is taken as default.  This allows you to just position
2361;;; your cursor over a string that's a filename and have it taken as default.
2362;;;
2363;;; If the command is given in a file buffer whose major mode is in
2364;;; SOURCE-MODES, then the filename is the default file, and the
2365;;; file's directory is the default directory.
2366;;;
2367;;; If the buffer isn't a source file buffer (e.g., it's the process buffer),
2368;;; then the default directory & file are what was used in the last source-file
2369;;; processing command (i.e., PREVIOUS-DIR/FILE).  If this is the first time
2370;;; the command has been run (PREVIOUS-DIR/FILE is nil), the default directory
2371;;; is the cwd, with no default file.  (\"no default file\" = nil)
2372;;;
2373;;; SOURCE-REGEXP is typically going to be something like (tea-mode)
2374;;; for T programs, (lisp-mode) for Lisp programs, (soar-mode lisp-mode)
2375;;; for Soar programs, etc.
2376;;;
2377;;; The function returns a pair: (default-directory . default-file).
2378
2379(defun term-source-default (previous-dir/file source-modes)
2380  (cond ((and buffer-file-name (memq major-mode source-modes))
2381	 (cons (file-name-directory    buffer-file-name)
2382	       (file-name-nondirectory buffer-file-name)))
2383	(previous-dir/file)
2384	(t
2385	 (cons default-directory nil))))
2386
2387
2388;;; (TERM-CHECK-SOURCE fname)
2389;;;============================================================================
2390;;; Prior to loading or compiling (or otherwise processing) a file (in the CMU
2391;;; process-in-a-buffer modes), this function can be called on the filename.
2392;;; If the file is loaded into a buffer, and the buffer is modified, the user
2393;;; is queried to see if he wants to save the buffer before proceeding with
2394;;; the load or compile.
2395
2396(defun term-check-source (fname)
2397  (let ((buff (get-file-buffer fname)))
2398    (when (and buff
2399	       (buffer-modified-p buff)
2400	       (y-or-n-p (format "Save buffer %s first? "
2401				 (buffer-name buff))))
2402      ;; save BUFF.
2403      (let ((old-buffer (current-buffer)))
2404	(set-buffer buff)
2405	(save-buffer)
2406	(set-buffer old-buffer)))))
2407
2408
2409;;; (TERM-GET-SOURCE prompt prev-dir/file source-modes mustmatch-p)
2410;;;============================================================================
2411;;; TERM-GET-SOURCE is used to prompt for filenames in command-interpreter
2412;;; commands that process source files (like loading or compiling a file).
2413;;; It prompts for the filename, provides a default, if there is one,
2414;;; and returns the result filename.
2415;;;
2416;;; See TERM-SOURCE-DEFAULT for more on determining defaults.
2417;;;
2418;;; PROMPT is the prompt string.  PREV-DIR/FILE is the (directory . file) pair
2419;;; from the last source processing command.  SOURCE-MODES is a list of major
2420;;; modes used to determine what file buffers contain source files.  (These
2421;;; two arguments are used for determining defaults).  If MUSTMATCH-P is true,
2422;;; then the filename reader will only accept a file that exists.
2423;;;
2424;;; A typical use:
2425;;; (interactive (term-get-source "Compile file: " prev-lisp-dir/file
2426;;;                                 '(lisp-mode) t))
2427
2428;;; This is pretty stupid about strings.  It decides we're in a string
2429;;; if there's a quote on both sides of point on the current line.
2430(defun term-extract-string ()
2431  "Return string around `point' that starts the current line or nil."
2432  (save-excursion
2433    (let* ((point (point))
2434	   (bol (progn (beginning-of-line) (point)))
2435	   (eol (progn (end-of-line) (point)))
2436	   (start (progn (goto-char point)
2437			 (and (search-backward "\"" bol t)
2438			      (1+ (point)))))
2439	   (end (progn (goto-char point)
2440		       (and (search-forward "\"" eol t)
2441			    (1- (point))))))
2442      (and start end
2443	   (buffer-substring start end)))))
2444
2445(defun term-get-source (prompt prev-dir/file source-modes mustmatch-p)
2446  (let* ((def (term-source-default prev-dir/file source-modes))
2447         (stringfile (term-extract-string))
2448	 (sfile-p (and stringfile
2449		       (condition-case ()
2450			   (file-exists-p stringfile)
2451			 (error nil))
2452		       (not (file-directory-p stringfile))))
2453	 (defdir  (if sfile-p (file-name-directory stringfile)
2454                      (car def)))
2455	 (deffile (if sfile-p (file-name-nondirectory stringfile)
2456                      (cdr def)))
2457	 (ans (read-file-name (if deffile (format "%s(default %s) "
2458						  prompt    deffile)
2459				  prompt)
2460			      defdir
2461			      (concat defdir deffile)
2462			      mustmatch-p)))
2463    (list (expand-file-name (substitute-in-file-name ans)))))
2464
2465;;; I am somewhat divided on this string-default feature.  It seems
2466;;; to violate the principle-of-least-astonishment, in that it makes
2467;;; the default harder to predict, so you actually have to look and see
2468;;; what the default really is before choosing it.  This can trip you up.
2469;;; On the other hand, it can be useful, I guess.  I would appreciate feedback
2470;;; on this.
2471;;;     -Olin
2472
2473
2474;;; Simple process query facility.
2475;;; ===========================================================================
2476;;; This function is for commands that want to send a query to the process
2477;;; and show the response to the user.  For example, a command to get the
2478;;; arglist for a Common Lisp function might send a "(arglist 'foo)" query
2479;;; to an inferior Common Lisp process.
2480;;;
2481;;; This simple facility just sends strings to the inferior process and pops
2482;;; up a window for the process buffer so you can see what the process
2483;;; responds with.  We don't do anything fancy like try to intercept what the
2484;;; process responds with and put it in a pop-up window or on the message
2485;;; line.  We just display the buffer.  Low tech.  Simple.  Works good.
2486
2487;;; Send to the inferior process PROC the string STR.  Pop-up but do not select
2488;;; a window for the inferior process so that its response can be seen.
2489(defun term-proc-query (proc str)
2490  (let* ((proc-buf (process-buffer proc))
2491	 (proc-mark (process-mark proc)))
2492    (display-buffer proc-buf)
2493    (set-buffer proc-buf) ; but it's not the selected *window*
2494    (let ((proc-win (get-buffer-window proc-buf))
2495	  (proc-pt (marker-position proc-mark)))
2496      (term-send-string proc str) ; send the query
2497      (accept-process-output proc)  ; wait for some output
2498      ;; Try to position the proc window so you can see the answer.
2499      ;; This is bogus code.  If you delete the (sit-for 0), it breaks.
2500      ;; I don't know why.  Wizards invited to improve it.
2501      (when (not (pos-visible-in-window-p proc-pt proc-win))
2502	(let ((opoint (window-point proc-win)))
2503	  (set-window-point proc-win proc-mark) (sit-for 0)
2504	  (if (not (pos-visible-in-window-p opoint proc-win))
2505	      (push-mark opoint)
2506	    (set-window-point proc-win opoint)))))))
2507
2508;;; Returns the current column in the current screen line.
2509;;; Note: (current-column) yields column in buffer line.
2510
2511(defun term-horizontal-column ()
2512  (- (term-current-column) (term-start-line-column)))
2513
2514;; Calls either vertical-motion or term-buffer-vertical-motion
2515(defmacro term-vertical-motion (count)
2516  (list 'funcall 'term-vertical-motion count))
2517
2518;; An emulation of vertical-motion that is independent of having a window.
2519;; Instead, it uses the term-width variable as the logical window width.
2520
2521(defun term-buffer-vertical-motion (count)
2522  (cond ((= count 0)
2523	 (move-to-column (* term-width (/ (current-column) term-width)))
2524	 0)
2525	((> count 0)
2526	 (let ((H)
2527	       (todo (+ count (/ (current-column) term-width))))
2528	   (end-of-line)
2529	   ;; The loop iterates over buffer lines;
2530	   ;; H is the number of screen lines in the current line, i.e.
2531	   ;; the ceiling of dividing the buffer line width by term-width.
2532	   (while (and (<= (setq H (max (/ (+ (current-column) term-width -1)
2533					   term-width)
2534					1))
2535			   todo)
2536		       (not (eobp)))
2537	     (setq todo (- todo H))
2538	     (forward-char) ;; Move past the ?\n
2539	     (end-of-line)) ;; and on to the end of the next line.
2540	   (if (and (>= todo H) (> todo 0))
2541	       (+ (- count todo) H -1) ;; Hit end of buffer.
2542	     (move-to-column (* todo term-width))
2543	     count)))
2544	(t ;; (< count 0) ;; Similar algorithm, but for upward motion.
2545	 (let ((H)
2546	       (todo (- count)))
2547	   (while (and (<= (setq H (max (/ (+ (current-column) term-width -1)
2548					   term-width)
2549					1))
2550			   todo)
2551		       (progn (beginning-of-line)
2552			      (not (bobp))))
2553	     (setq todo (- todo H))
2554	     (backward-char)) ;; Move to end of previous line.
2555	   (if (and (>= todo H) (> todo 0))
2556	       (+ count todo (- 1 H)) ;; Hit beginning of buffer.
2557	     (move-to-column (* (- H todo 1) term-width))
2558	     count)))))
2559
2560;;; The term-start-line-column variable is used as a cache.
2561(defun term-start-line-column ()
2562  (cond (term-start-line-column)
2563	((let ((save-pos (point)))
2564	   (term-vertical-motion 0)
2565	   (setq term-start-line-column (current-column))
2566	   (goto-char save-pos)
2567	   term-start-line-column))))
2568
2569;;; Same as (current-column), but uses term-current-column as a cache.
2570(defun term-current-column ()
2571  (cond (term-current-column)
2572	((setq term-current-column (current-column)))))
2573
2574;;; Move DELTA column right (or left if delta < 0 limiting at column 0).
2575
2576(defun term-move-columns (delta)
2577  (setq term-current-column (max 0 (+ (term-current-column) delta)))
2578  (let (point-at-eol)
2579    (save-excursion
2580      (end-of-line)
2581      (setq point-at-eol (point)))
2582    (move-to-column term-current-column t)
2583    ;; If move-to-column extends the current line it will use the face
2584    ;; from the last character on the line, set the face for the chars
2585    ;; to default.
2586    (when (> (point) point-at-eol)
2587      (put-text-property point-at-eol (point) 'face 'default))))
2588
2589;; Insert COUNT copies of CHAR in the default face.
2590(defun term-insert-char (char count)
2591  (let ((old-point (point)))
2592    (insert-char char count)
2593    (put-text-property old-point (point) 'face 'default)))
2594
2595(defun term-current-row ()
2596  (cond (term-current-row)
2597	((setq term-current-row
2598	       (save-restriction
2599		 (save-excursion
2600		   (narrow-to-region term-home-marker (point-max))
2601		   (- (term-vertical-motion -9999))))))))
2602
2603(defun term-adjust-current-row-cache (delta)
2604  (when term-current-row
2605    (setq term-current-row
2606	  (max 0 (+ term-current-row delta)))))
2607
2608(defun term-terminal-pos ()
2609  (save-excursion ;    save-restriction
2610    (let ((save-col (term-current-column))
2611	  x y)
2612      (term-vertical-motion 0)
2613      (setq x (- save-col (current-column)))
2614      (setq y (term-vertical-motion term-height))
2615      (cons x y))))
2616
2617;;;Function that handles term messages: code by rms ( and you can see the
2618;;;difference ;-) -mm
2619
2620(defun term-handle-ansi-terminal-messages (message)
2621  ;; Is there a command here?
2622  (while (string-match "\eAnSiT.+\n" message)
2623    ;; Extract the command code and the argument.
2624    (let* ((start (match-beginning 0))
2625	   (end (match-end 0))
2626	   (command-code (aref message (+ start 6)))
2627	   (argument
2628	    (save-match-data
2629	      (substring message
2630			 (+ start 8)
2631			 (string-match "\r?\n" message
2632				       (+ start 8)))))
2633	   ignore)
2634      ;; Delete this command from MESSAGE.
2635      (setq message (replace-match "" t t message))
2636
2637      ;; If we recognize the type of command, set the appropriate variable.
2638      (cond ((= command-code ?c)
2639	     (setq term-ansi-at-dir argument))
2640	    ((= command-code ?h)
2641	     (setq term-ansi-at-host argument))
2642	    ((= command-code ?u)
2643	     (setq term-ansi-at-user argument))
2644	    ;; Otherwise ignore this one.
2645	    (t
2646	     (setq ignore t)))
2647
2648      ;; Update default-directory based on the changes this command made.
2649      (if ignore
2650	  nil
2651	(setq default-directory
2652	      (file-name-as-directory
2653	       (if (and (string= term-ansi-at-host (system-name))
2654					(string= term-ansi-at-user (user-real-login-name)))
2655		   (expand-file-name term-ansi-at-dir)
2656		 (if (string= term-ansi-at-user (user-real-login-name))
2657		     (concat "/" term-ansi-at-host ":" term-ansi-at-dir)
2658		   (concat "/" term-ansi-at-user "@" term-ansi-at-host ":"
2659			   term-ansi-at-dir)))))
2660
2661	;; I'm not sure this is necessary,
2662	;; but it's best to be on the safe side.
2663	(if (string= term-ansi-at-host (system-name))
2664	    (progn
2665	      (setq ange-ftp-default-user term-ansi-at-save-user)
2666	      (setq ange-ftp-default-password term-ansi-at-save-pwd)
2667	      (setq ange-ftp-generate-anonymous-password term-ansi-at-save-anon))
2668	  (setq term-ansi-at-save-user ange-ftp-default-user)
2669	  (setq term-ansi-at-save-pwd ange-ftp-default-password)
2670	  (setq term-ansi-at-save-anon ange-ftp-generate-anonymous-password)
2671	  (setq ange-ftp-default-user nil)
2672	  (setq ange-ftp-default-password nil)
2673	  (setq ange-ftp-generate-anonymous-password nil)))))
2674  message)
2675
2676
2677;;; Terminal emulation
2678;;; This is the standard process filter for term buffers.
2679;;; It emulates (most of the features of) a VT100/ANSI-style terminal.
2680
2681(defun term-emulate-terminal (proc str)
2682  (with-current-buffer (process-buffer proc)
2683    (let* ((i 0) char funny count save-point save-marker old-point temp win
2684	   (buffer-undo-list t)
2685	   (selected (selected-window))
2686	   last-win
2687           handled-ansi-message
2688	   (str-length (length str)))
2689      (save-selected-window
2690
2691	;; Let's handle the messages. -mm
2692
2693        (let* ((newstr (term-handle-ansi-terminal-messages str)))
2694          (when (not (eq str newstr))
2695	    (setq handled-ansi-message t
2696		  str newstr)))
2697        (setq str-length (length str))
2698
2699	(when (marker-buffer term-pending-delete-marker)
2700	  ;; Delete text following term-pending-delete-marker.
2701	  (delete-region term-pending-delete-marker (process-mark proc))
2702	  (set-marker term-pending-delete-marker nil))
2703
2704	(if (eq (window-buffer) (current-buffer))
2705	    (progn
2706	      (setq term-vertical-motion (symbol-function 'vertical-motion))
2707	      (term-check-size proc))
2708	  (setq term-vertical-motion
2709		(symbol-function 'term-buffer-vertical-motion)))
2710
2711	(setq save-marker (copy-marker (process-mark proc)))
2712
2713	(when (/= (point) (process-mark proc))
2714	  (setq save-point (point-marker))
2715	  (goto-char (process-mark proc)))
2716
2717	(save-restriction
2718	  ;; If the buffer is in line mode, and there is a partial
2719	  ;; input line, save the line (by narrowing to leave it
2720	  ;; outside the restriction ) until we're done with output.
2721	  (when (and (> (point-max) (process-mark proc))
2722		     (term-in-line-mode))
2723	    (narrow-to-region (point-min) (process-mark proc)))
2724
2725	  (when term-log-buffer
2726	    (princ str term-log-buffer))
2727	  (cond ((eq term-terminal-state 4) ;; Have saved pending output.
2728		 (setq str (concat term-terminal-parameter str))
2729		 (setq term-terminal-parameter nil)
2730		 (setq str-length (length str))
2731		 (setq term-terminal-state 0)))
2732
2733	  (while (< i str-length)
2734	    (setq char (aref str i))
2735	    (cond ((< term-terminal-state 2)
2736		   ;; Look for prefix of regular chars
2737		   (setq funny
2738			 (string-match "[\r\n\000\007\033\t\b\032\016\017]"
2739				       str i))
2740		   (when (not funny) (setq funny str-length))
2741		   (cond ((> funny i)
2742			  (cond ((eq term-terminal-state 1)
2743				 ;; We are in state 1, we need to wrap
2744				 ;; around.  Go to the beginning of
2745				 ;; the next line and switch to state
2746				 ;; 0.
2747				 (term-down 1 t)
2748				 (term-move-columns (- (term-current-column)))
2749				 (setq term-terminal-state 0)))
2750			  (setq count (- funny i))
2751			  (setq temp (- (+ (term-horizontal-column) count)
2752					term-width))
2753			  (cond ((<= temp 0)) ;; All count chars fit in line.
2754				((> count temp)	;; Some chars fit.
2755				 ;; This iteration, handle only what fits.
2756				 (setq count (- count temp))
2757				 (setq temp 0)
2758				 (setq funny (+ count i)))
2759				((or (not (or term-pager-count
2760					      term-scroll-with-delete))
2761				     (>  (term-handle-scroll 1) 0))
2762				 (term-adjust-current-row-cache 1)
2763				 (setq count (min count term-width))
2764				 (setq funny (+ count i))
2765				 (setq term-start-line-column
2766				       term-current-column))
2767				(t ;; Doing PAGER processing.
2768				 (setq count 0 funny i)
2769				 (setq term-current-column nil)
2770				 (setq term-start-line-column nil)))
2771			  (setq old-point (point))
2772
2773			  ;; Insert a string, check how many columns
2774			  ;; we moved, then delete that many columns
2775			  ;; following point if not eob nor insert-mode.
2776			  (let ((old-column (current-column))
2777				columns pos)
2778			    (insert (decode-coding-string (substring str i funny) locale-coding-system))
2779			    (setq term-current-column (current-column)
2780				  columns (- term-current-column old-column))
2781			    (when (not (or (eobp) term-insert-mode))
2782			      (setq pos (point))
2783			      (term-move-columns columns)
2784			      (delete-region pos (point)))
2785			    ;; In insert mode if the current line
2786			    ;; has become too long it needs to be
2787			    ;; chopped off.
2788			    (when term-insert-mode
2789			      (setq pos (point))
2790			      (end-of-line)
2791			      (when (> (current-column) term-width)
2792				(delete-region (- (point) (- (current-column) term-width))
2793					       (point)))
2794			      (goto-char pos)))
2795			  (setq term-current-column nil)
2796
2797			  (put-text-property old-point (point)
2798					     'face term-current-face)
2799			  ;; If the last char was written in last column,
2800			  ;; back up one column, but remember we did so.
2801			  ;; Thus we emulate xterm/vt100-style line-wrapping.
2802			  (cond ((eq temp 0)
2803				 (term-move-columns -1)
2804				 (setq term-terminal-state 1)))
2805			  (setq i (1- funny)))
2806			 ((and (setq term-terminal-state 0)
2807			       (eq char ?\^I)) ; TAB (terminfo: ht)
2808			  (setq count (term-current-column))
2809			  ;; The line cannot exceed term-width. TAB at
2810			  ;; the end of a line should not cause wrapping.
2811			  (setq count (min term-width
2812					   (+ count 8 (- (mod count 8)))))
2813			  (if (> term-width count)
2814			      (progn
2815				(term-move-columns
2816				 (- count (term-current-column)))
2817				(setq term-current-column count))
2818			    (when (> term-width (term-current-column))
2819			      (term-move-columns
2820			       (1- (- term-width (term-current-column)))))
2821			    (when (= term-width (term-current-column))
2822			      (term-move-columns -1))))
2823			 ((eq char ?\r)  ;; (terminfo: cr)
2824			  (term-vertical-motion 0)
2825			  (setq term-current-column term-start-line-column))
2826			 ((eq char ?\n)  ;; (terminfo: cud1, ind)
2827			  (unless (and term-kill-echo-list
2828				       (term-check-kill-echo-list))
2829			    (term-down 1 t)))
2830			 ((eq char ?\b)  ;; (terminfo: cub1)
2831			  (term-move-columns -1))
2832			 ((eq char ?\033) ; Escape
2833			  (setq term-terminal-state 2))
2834			 ((eq char 0))	       ; NUL: Do nothing
2835			 ((eq char ?\016))     ; Shift Out - ignored
2836			 ((eq char ?\017))     ; Shift In - ignored
2837			 ((eq char ?\^G) ;; (terminfo: bel)
2838			  (beep t))
2839			 ((and (eq char ?\032)
2840                               (not handled-ansi-message))
2841			  (let ((end (string-match "\r?$" str i)))
2842			    (if end
2843				(funcall term-command-hook
2844					 (prog1 (substring str (1+ i) end)
2845					   (setq i (match-end 0))))
2846			      (setq term-terminal-parameter (substring str i))
2847			      (setq term-terminal-state 4)
2848			      (setq i str-length))))
2849			 (t   ; insert char FIXME: Should never happen
2850			  (term-move-columns 1)
2851			  (backward-delete-char 1)
2852			  (insert char))))
2853		  ((eq term-terminal-state 2)	  ; Seen Esc
2854		   (cond ((eq char ?\133)	  ;; ?\133 = ?[
2855
2856;;; Some modifications to cope with multiple settings like ^[[01;32;43m -mm
2857;;; Note that now the init value of term-terminal-previous-parameter has
2858;;; been changed to -1
2859
2860			  (setq term-terminal-parameter 0)
2861			  (setq term-terminal-previous-parameter -1)
2862			  (setq term-terminal-previous-parameter-2 -1)
2863			  (setq term-terminal-previous-parameter-3 -1)
2864			  (setq term-terminal-previous-parameter-4 -1)
2865			  (setq term-terminal-more-parameters 0)
2866			  (setq term-terminal-state 3))
2867			 ((eq char ?D) ;; scroll forward
2868			  (term-handle-deferred-scroll)
2869			  (term-down 1 t)
2870			  (setq term-terminal-state 0))
2871			 ;; ((eq char ?E) ;; (terminfo: nw), not used for
2872			 ;; 	       ;; now, but this is a working
2873			 ;; 	       ;; implementation
2874			 ;;  (term-down 1)
2875			 ;;  (term-goto term-current-row 0)
2876			 ;;  (setq term-terminal-state 0))
2877			 ((eq char ?M) ;; scroll reversed (terminfo: ri)
2878			  (if (or (< (term-current-row) term-scroll-start)
2879				  (>= (1- (term-current-row))
2880				      term-scroll-start))
2881			      ;; Scrolling up will not move outside
2882			      ;; the scroll region.
2883			      (term-down -1)
2884			    ;; Scrolling the scroll region is needed.
2885			    (term-down -1 t))
2886			  (setq term-terminal-state 0))
2887			 ((eq char ?7) ;; Save cursor (terminfo: sc)
2888			  (term-handle-deferred-scroll)
2889			  (setq term-saved-cursor
2890				(list (term-current-row)
2891				      (term-horizontal-column)
2892				      term-ansi-current-bg-color
2893				      term-ansi-current-bold
2894				      term-ansi-current-color
2895				      term-ansi-current-invisible
2896				      term-ansi-current-reverse
2897				      term-ansi-current-underline
2898				      term-current-face)
2899				)
2900			  (setq term-terminal-state 0))
2901			 ((eq char ?8) ;; Restore cursor (terminfo: rc)
2902			  (when term-saved-cursor
2903			    (term-goto (nth 0 term-saved-cursor)
2904				       (nth 1 term-saved-cursor))
2905			    (setq term-ansi-current-bg-color
2906				  (nth 2 term-saved-cursor)
2907				  term-ansi-current-bold
2908				  (nth 3 term-saved-cursor)
2909				  term-ansi-current-color
2910				  (nth 4 term-saved-cursor)
2911				  term-ansi-current-invisible
2912				  (nth 5 term-saved-cursor)
2913				  term-ansi-current-reverse
2914				  (nth 6 term-saved-cursor)
2915				  term-ansi-current-underline
2916				  (nth 7 term-saved-cursor)
2917				  term-current-face
2918				  (nth 8 term-saved-cursor)))
2919			  (setq term-terminal-state 0))
2920			 ((eq char ?c) ;; \Ec - Reset (terminfo: rs1)
2921			  ;; This is used by the "clear" program.
2922			  (setq term-terminal-state 0)
2923			  (term-reset-terminal))
2924			 ;; The \E#8 reset sequence for xterm. We
2925			 ;; probably don't need to handle it, but this
2926			 ;; is the code to parse it.
2927			 ;; ((eq char ?#)
2928			 ;;  (when (eq (aref str (1+ i)) ?8)
2929			 ;;    (setq i (1+ i))
2930			 ;;    (setq term-scroll-start 0)
2931			 ;;    (setq term-scroll-end term-height)
2932			 ;;    (setq term-terminal-state 0)))
2933			 ((setq term-terminal-state 0))))
2934		  ((eq term-terminal-state 3) ; Seen Esc [
2935		   (cond ((and (>= char ?0) (<= char ?9))
2936			  (setq term-terminal-parameter
2937				(+ (* 10 term-terminal-parameter) (- char ?0))))
2938			 ((eq char ?\;)
2939;;; Some modifications to cope with multiple settings like ^[[01;32;43m -mm
2940			  (setq term-terminal-more-parameters 1)
2941			  (setq term-terminal-previous-parameter-4
2942				term-terminal-previous-parameter-3)
2943			  (setq term-terminal-previous-parameter-3
2944				term-terminal-previous-parameter-2)
2945			  (setq term-terminal-previous-parameter-2
2946				term-terminal-previous-parameter)
2947			  (setq term-terminal-previous-parameter
2948				term-terminal-parameter)
2949			  (setq term-terminal-parameter 0))
2950			 ((eq char ??)) ; Ignore ?
2951			 (t
2952			  (term-handle-ansi-escape proc char)
2953			  (setq term-terminal-more-parameters 0)
2954			  (setq term-terminal-previous-parameter-4 -1)
2955			  (setq term-terminal-previous-parameter-3 -1)
2956			  (setq term-terminal-previous-parameter-2 -1)
2957			  (setq term-terminal-previous-parameter -1)
2958			  (setq term-terminal-state 0)))))
2959	    (when (term-handling-pager)
2960	      ;; Finish stuff to get ready to handle PAGER.
2961	      (if (> (% (current-column) term-width) 0)
2962		  (setq term-terminal-parameter
2963			(substring str i))
2964		;; We're at column 0.  Goto end of buffer; to compensate,
2965		;; prepend a ?\r for later.  This looks more consistent.
2966		(if (zerop i)
2967		    (setq term-terminal-parameter
2968			  (concat "\r" (substring str i)))
2969		  (setq term-terminal-parameter (substring str (1- i)))
2970		  (aset term-terminal-parameter 0 ?\r))
2971		(goto-char (point-max)))
2972	      (setq term-terminal-state 4)
2973	      (make-local-variable 'term-pager-old-filter)
2974	      (setq term-pager-old-filter (process-filter proc))
2975	      (set-process-filter proc term-pager-filter)
2976	      (setq i str-length))
2977	    (setq i (1+ i))))
2978
2979	(when (>= (term-current-row) term-height)
2980	  (term-handle-deferred-scroll))
2981
2982	(set-marker (process-mark proc) (point))
2983	(when save-point
2984	  (goto-char save-point)
2985	  (set-marker save-point nil))
2986
2987	;; Check for a pending filename-and-line number to display.
2988	;; We do this before scrolling, because we might create a new window.
2989	(when (and term-pending-frame
2990		   (eq (window-buffer selected) (current-buffer)))
2991	  (term-display-line (car term-pending-frame)
2992			     (cdr term-pending-frame))
2993	  (setq term-pending-frame nil)
2994	  ;; We have created a new window, so check the window size.
2995	  (term-check-size proc))
2996
2997	;; Scroll each window displaying the buffer but (by default)
2998	;; only if the point matches the process-mark we started with.
2999	(setq win selected)
3000	;; Avoid infinite loop in strange case where minibuffer window
3001	;; is selected but not active.
3002	(while (window-minibuffer-p win)
3003	  (setq win (next-window win nil t)))
3004	(setq last-win win)
3005	(while (progn
3006		 (setq win (next-window win nil t))
3007		 (when (eq (window-buffer win) (process-buffer proc))
3008		   (let ((scroll term-scroll-to-bottom-on-output))
3009		     (select-window win)
3010		     (when (or (= (point) save-marker)
3011			       (eq scroll t) (eq scroll 'all)
3012			       ;; Maybe user wants point to jump to the end.
3013			       (and (eq selected win)
3014				    (or (eq scroll 'this) (not save-point)))
3015			       (and (eq scroll 'others)
3016				    (not (eq selected win))))
3017		       (goto-char term-home-marker)
3018		       (recenter 0)
3019		       (goto-char (process-mark proc))
3020		       (if (not (pos-visible-in-window-p (point) win))
3021			   (recenter -1)))
3022		     ;; Optionally scroll so that the text
3023		     ;; ends at the bottom of the window.
3024		     (when (and term-scroll-show-maximum-output
3025				(>= (point) (process-mark proc)))
3026		       (save-excursion
3027			 (goto-char (point-max))
3028			 (recenter -1)))))
3029		 (not (eq win last-win))))
3030
3031;;; Stolen from comint.el and adapted -mm
3032	(when (> term-buffer-maximum-size 0)
3033	  (save-excursion
3034	    (goto-char (process-mark (get-buffer-process (current-buffer))))
3035	    (forward-line (- term-buffer-maximum-size))
3036	    (beginning-of-line)
3037	    (delete-region (point-min) (point))))
3038	(set-marker save-marker nil)))))
3039
3040(defun term-handle-deferred-scroll ()
3041  (let ((count (- (term-current-row) term-height)))
3042    (when (>= count 0)
3043      (save-excursion
3044	(goto-char term-home-marker)
3045	(term-vertical-motion (1+ count))
3046	(set-marker term-home-marker (point))
3047	(setq term-current-row (1- term-height))))))
3048
3049;;; Reset the terminal, delete all the content and set the face to the
3050;;; default one.
3051(defun term-reset-terminal ()
3052  (erase-buffer)
3053  (setq term-current-row 0)
3054  (setq term-current-column 1)
3055  (setq term-scroll-start 0)
3056  (setq term-scroll-end term-height)
3057  (setq term-insert-mode nil)
3058  (setq term-current-face nil)
3059  (setq term-ansi-current-underline nil)
3060  (setq term-ansi-current-bold nil)
3061  (setq term-ansi-current-reverse nil)
3062  (setq term-ansi-current-color 0)
3063  (setq term-ansi-current-invisible nil)
3064  (setq term-ansi-face-already-done nil)
3065  (setq term-ansi-current-bg-color 0))
3066
3067;;; New function to deal with ansi colorized output, as you can see you can
3068;;; have any bold/underline/fg/bg/reverse combination. -mm
3069
3070(defun term-handle-colors-array (parameter)
3071  (cond
3072
3073;;; Bold  (terminfo: bold)
3074   ((eq parameter 1)
3075    (setq term-ansi-current-bold t))
3076
3077;;; Underline
3078   ((eq parameter 4)
3079    (setq term-ansi-current-underline t))
3080
3081;;; Blink (unsupported by Emacs), will be translated to bold.
3082;;; This may change in the future though.
3083   ((eq parameter 5)
3084    (setq term-ansi-current-bold t))
3085
3086;;; Reverse (terminfo: smso)
3087   ((eq parameter 7)
3088    (setq term-ansi-current-reverse t))
3089
3090;;; Invisible
3091   ((eq parameter 8)
3092    (setq term-ansi-current-invisible t))
3093
3094;;; Reset underline (terminfo: rmul)
3095   ((eq parameter 24)
3096    (setq term-ansi-current-underline nil))
3097
3098;;; Reset reverse (terminfo: rmso)
3099   ((eq parameter 27)
3100    (setq term-ansi-current-reverse nil))
3101
3102;;; Foreground
3103   ((and (>= parameter 30) (<= parameter 37))
3104    (setq term-ansi-current-color (- parameter 29)))
3105
3106;;; Reset foreground
3107   ((eq parameter 39)
3108    (setq term-ansi-current-color 0))
3109
3110;;; Background
3111   ((and (>= parameter 40) (<= parameter 47))
3112    (setq term-ansi-current-bg-color (- parameter 39)))
3113
3114;;; Reset background
3115   ((eq parameter 49)
3116    (setq term-ansi-current-bg-color 0))
3117
3118;;; 0 (Reset) or unknown (reset anyway)
3119   (t
3120    (setq term-current-face nil)
3121    (setq term-ansi-current-underline nil)
3122    (setq term-ansi-current-bold nil)
3123    (setq term-ansi-current-reverse nil)
3124    (setq term-ansi-current-color 0)
3125    (setq term-ansi-current-invisible nil)
3126    (setq term-ansi-face-already-done t)
3127    (setq term-ansi-current-bg-color 0)))
3128
3129;	(message "Debug: U-%d R-%d B-%d I-%d D-%d F-%d B-%d"
3130;		   term-ansi-current-underline
3131;		   term-ansi-current-reverse
3132;		   term-ansi-current-bold
3133;		   term-ansi-current-invisible
3134;		   term-ansi-face-already-done
3135;		   term-ansi-current-color
3136;		   term-ansi-current-bg-color)
3137
3138
3139  (unless term-ansi-face-already-done
3140      (if term-ansi-current-reverse
3141	  (if term-ansi-current-invisible
3142	      (setq term-current-face
3143		    (if (= term-ansi-current-color 0)
3144			(list :background
3145			      term-default-fg-color
3146			      :foreground
3147			      term-default-fg-color)
3148		      (list :background
3149			    (elt ansi-term-color-vector term-ansi-current-color)
3150			    :foreground
3151			    (elt ansi-term-color-vector term-ansi-current-color)))
3152		    ;; No need to bother with anything else if it's invisible
3153		    )
3154	    (setq term-current-face
3155		  (list :background
3156			(if (= term-ansi-current-color 0)
3157			    (face-foreground 'default)
3158			  (elt ansi-term-color-vector term-ansi-current-color))
3159			:foreground
3160			(if (= term-ansi-current-bg-color 0)
3161			    (face-background 'default)
3162			  (elt ansi-term-color-vector term-ansi-current-bg-color))))
3163	    (when term-ansi-current-bold
3164	      (setq term-current-face
3165		    (append '(:weight bold) term-current-face)))
3166	    (when term-ansi-current-underline
3167	      (setq term-current-face
3168		    (append '(:underline t) term-current-face))))
3169	(if term-ansi-current-invisible
3170	    (setq term-current-face
3171		  (if (= term-ansi-current-bg-color 0)
3172		      (list :background
3173			    term-default-bg-color
3174			    :foreground
3175			    term-default-bg-color)
3176		    (list :foreground
3177			  (elt ansi-term-color-vector term-ansi-current-bg-color)
3178			  :background
3179			  (elt ansi-term-color-vector term-ansi-current-bg-color)))
3180		  ;; No need to bother with anything else if it's invisible
3181		  )
3182	  (setq term-current-face
3183		(list :foreground
3184		      (elt ansi-term-color-vector term-ansi-current-color)
3185		      :background
3186		      (elt ansi-term-color-vector term-ansi-current-bg-color)))
3187	  (when term-ansi-current-bold
3188	    (setq term-current-face
3189		  (append '(:weight bold) term-current-face)))
3190	  (when term-ansi-current-underline
3191	    (setq term-current-face
3192		  (append '(:underline t) term-current-face))))))
3193
3194;;;	(message "Debug %S" term-current-face)
3195  (setq term-ansi-face-already-done nil))
3196
3197
3198;;; Handle a character assuming (eq terminal-state 2) -
3199;;; i.e. we have previously seen Escape followed by ?[.
3200
3201(defun term-handle-ansi-escape (proc char)
3202  (cond
3203   ((or (eq char ?H)  ;; cursor motion (terminfo: cup,home)
3204	;; (eq char ?f) ;; xterm seems to handle this sequence too, not
3205	;; needed for now
3206	)
3207    (when (<= term-terminal-parameter 0)
3208      (setq term-terminal-parameter 1))
3209    (when (<= term-terminal-previous-parameter 0)
3210      (setq term-terminal-previous-parameter 1))
3211    (when (> term-terminal-previous-parameter term-height)
3212      (setq term-terminal-previous-parameter term-height))
3213    (when (> term-terminal-parameter term-width)
3214      (setq term-terminal-parameter term-width))
3215    (term-goto
3216     (1- term-terminal-previous-parameter)
3217     (1- term-terminal-parameter)))
3218   ;; \E[A - cursor up (terminfo: cuu, cuu1)
3219   ((eq char ?A)
3220    (term-handle-deferred-scroll)
3221    (let ((tcr (term-current-row)))
3222      (term-down
3223       (if (< (- tcr term-terminal-parameter) term-scroll-start)
3224	   ;; If the amount to move is before scroll start, move
3225	   ;; to scroll start.
3226	   (- term-scroll-start tcr)
3227	 (if (>= term-terminal-parameter tcr)
3228	     (- tcr)
3229	   (- (max 1 term-terminal-parameter)))) t)))
3230   ;; \E[B - cursor down (terminfo: cud)
3231   ((eq char ?B)
3232    (let ((tcr (term-current-row)))
3233      (unless (= tcr (1- term-scroll-end))
3234	(term-down
3235	 (if (> (+ tcr term-terminal-parameter) term-scroll-end)
3236	     (- term-scroll-end 1 tcr)
3237	   (max 1 term-terminal-parameter)) t))))
3238   ;; \E[C - cursor right (terminfo: cuf, cuf1)
3239   ((eq char ?C)
3240    (term-move-columns
3241     (max 1
3242	  (if (>= (+ term-terminal-parameter (term-current-column)) term-width)
3243	      (- term-width (term-current-column)  1)
3244	    term-terminal-parameter))))
3245   ;; \E[D - cursor left (terminfo: cub)
3246   ((eq char ?D)
3247    (term-move-columns (- (max 1 term-terminal-parameter))))
3248   ;; \E[J - clear to end of screen (terminfo: ed, clear)
3249   ((eq char ?J)
3250    (term-erase-in-display term-terminal-parameter))
3251   ;; \E[K - clear to end of line (terminfo: el, el1)
3252   ((eq char ?K)
3253    (term-erase-in-line term-terminal-parameter))
3254   ;; \E[L - insert lines (terminfo: il, il1)
3255   ((eq char ?L)
3256    (term-insert-lines (max 1 term-terminal-parameter)))
3257   ;; \E[M - delete lines (terminfo: dl, dl1)
3258   ((eq char ?M)
3259    (term-delete-lines (max 1 term-terminal-parameter)))
3260   ;; \E[P - delete chars (terminfo: dch, dch1)
3261   ((eq char ?P)
3262    (term-delete-chars (max 1 term-terminal-parameter)))
3263   ;; \E[@ - insert spaces (terminfo: ich)
3264   ((eq char ?@)
3265    (term-insert-spaces (max 1 term-terminal-parameter)))
3266   ;; \E[?h - DEC Private Mode Set
3267   ((eq char ?h)
3268    (cond ((eq term-terminal-parameter 4)  ;; (terminfo: smir)
3269	   (setq term-insert-mode t))
3270	  ;; ((eq term-terminal-parameter 47) ;; (terminfo: smcup)
3271	  ;; (term-switch-to-alternate-sub-buffer t))
3272	  ))
3273   ;; \E[?l - DEC Private Mode Reset
3274   ((eq char ?l)
3275    (cond ((eq term-terminal-parameter 4)  ;; (terminfo: rmir)
3276	   (setq term-insert-mode nil))
3277	  ;; ((eq term-terminal-parameter 47) ;; (terminfo: rmcup)
3278	  ;; (term-switch-to-alternate-sub-buffer nil))
3279	  ))
3280
3281;;; Modified to allow ansi coloring -mm
3282   ;; \E[m - Set/reset modes, set bg/fg
3283   ;;(terminfo: smso,rmso,smul,rmul,rev,bold,sgr0,invis,op,setab,setaf)
3284   ((eq char ?m)
3285    (when (= term-terminal-more-parameters 1)
3286      (when (>= term-terminal-previous-parameter-4 0)
3287	(term-handle-colors-array term-terminal-previous-parameter-4))
3288      (when (>= term-terminal-previous-parameter-3 0)
3289	(term-handle-colors-array term-terminal-previous-parameter-3))
3290      (when (>= term-terminal-previous-parameter-2 0)
3291	(term-handle-colors-array term-terminal-previous-parameter-2))
3292      (term-handle-colors-array term-terminal-previous-parameter))
3293    (term-handle-colors-array term-terminal-parameter))
3294
3295   ;; \E[6n - Report cursor position
3296   ((eq char ?n)
3297    (term-handle-deferred-scroll)
3298    (process-send-string proc
3299			 (format "\e[%s;%sR"
3300				 (1+ (term-current-row))
3301				 (1+ (term-horizontal-column)))))
3302   ;; \E[r - Set scrolling region (terminfo: csr)
3303   ((eq char ?r)
3304    (term-set-scroll-region
3305     (1- term-terminal-previous-parameter)
3306     (1- term-terminal-parameter)))
3307   (t)))
3308
3309(defun term-set-scroll-region (top bottom)
3310  "Set scrolling region.
3311TOP is the top-most line (inclusive) of the new scrolling region,
3312while BOTTOM is the line following the new scrolling region (e.g. exclusive).
3313The top-most line is line 0."
3314  (setq term-scroll-start
3315	(if (or (< top 0) (>= top term-height))
3316	    0
3317	  top))
3318  (setq term-scroll-end
3319	(if (or (<= bottom term-scroll-start) (> bottom term-height))
3320	    term-height
3321	  bottom))
3322  (setq term-scroll-with-delete
3323	(or (term-using-alternate-sub-buffer)
3324	    (not (and (= term-scroll-start 0)
3325		      (= term-scroll-end term-height)))))
3326  (term-move-columns (- (term-current-column)))
3327  (term-goto 0 0))
3328
3329;; (defun term-switch-to-alternate-sub-buffer (set)
3330;;   ;; If asked to switch to (from) the alternate sub-buffer, and already (not)
3331;;   ;; using it, do nothing.  This test is needed for some programs (including
3332;;   ;; Emacs) that emit the ti termcap string twice, for unknown reason.
3333;;   (term-handle-deferred-scroll)
3334;;   (if (eq set (not (term-using-alternate-sub-buffer)))
3335;;       (let ((row (term-current-row))
3336;; 	    (col (term-horizontal-column)))
3337;; 	(cond (set
3338;; 	       (goto-char (point-max))
3339;; 	       (if (not (eq (preceding-char) ?\n))
3340;; 		   (term-insert-char ?\n 1))
3341;; 	       (setq term-scroll-with-delete t)
3342;; 	       (setq term-saved-home-marker (copy-marker term-home-marker))
3343;; 	       (set-marker term-home-marker (point)))
3344;; 	      (t
3345;; 	       (setq term-scroll-with-delete
3346;; 		     (not (and (= term-scroll-start 0)
3347;; 			       (= term-scroll-end term-height))))
3348;; 	       (set-marker term-home-marker term-saved-home-marker)
3349;; 	       (set-marker term-saved-home-marker nil)
3350;; 	       (setq term-saved-home-marker nil)
3351;; 	       (goto-char term-home-marker)))
3352;; 	(setq term-current-column nil)
3353;; 	(setq term-current-row 0)
3354;; 	(term-goto row col))))
3355
3356;; Default value for the symbol term-command-hook.
3357
3358(defun term-command-hook (string)
3359  (cond ((equal string "")
3360	 t)
3361	((= (aref string 0) ?\032)
3362	 ;; gdb (when invoked with -fullname) prints:
3363	 ;; \032\032FULLFILENAME:LINENUMBER:CHARPOS:BEG_OR_MIDDLE:PC\n
3364	 (let* ((first-colon (string-match ":" string 1))
3365		(second-colon
3366		 (string-match ":" string (1+ first-colon)))
3367		(filename (substring string 1 first-colon))
3368		(fileline (string-to-number
3369			   (substring string (1+ first-colon) second-colon))))
3370	   (setq term-pending-frame (cons filename fileline))))
3371	((= (aref string 0) ?/)
3372	 (cd (substring string 1)))
3373	;; Allowing the inferior to call functions in Emacs is
3374	;; probably too big a security hole.
3375	;; ((= (aref string 0) ?!)
3376	;; (eval (car (read-from-string string 1))))
3377	(t)));; Otherwise ignore it
3378
3379;; Make sure the file named TRUE-FILE is in a buffer that appears on the screen
3380;; and that its line LINE is visible.
3381;; Put the overlay-arrow on the line LINE in that buffer.
3382;; This is mainly used by gdb.
3383
3384(defun term-display-line (true-file line)
3385  (term-display-buffer-line (find-file-noselect true-file) line))
3386
3387(defun term-display-buffer-line (buffer line)
3388  (let* ((window (display-buffer buffer t))
3389	 (pos))
3390    (save-excursion
3391      (set-buffer buffer)
3392      (save-restriction
3393	(widen)
3394	(goto-line line)
3395	(setq pos (point))
3396	(setq overlay-arrow-string "=>")
3397	(or overlay-arrow-position
3398	    (setq overlay-arrow-position (make-marker)))
3399	(set-marker overlay-arrow-position (point) (current-buffer)))
3400      (cond ((or (< pos (point-min)) (> pos (point-max)))
3401	     (widen)
3402	     (goto-char pos))))
3403    (set-window-point window overlay-arrow-position)))
3404
3405;;; The buffer-local marker term-home-marker defines the "home position"
3406;;; (in terms of cursor motion).  However, we move the term-home-marker
3407;;; "down" as needed so that is no more that a window-full above (point-max).
3408
3409(defun term-goto-home ()
3410  (term-handle-deferred-scroll)
3411  (goto-char term-home-marker)
3412  (setq term-current-row 0)
3413  (setq term-current-column (current-column))
3414  (setq term-start-line-column term-current-column))
3415
3416(defun term-goto (row col)
3417  (term-handle-deferred-scroll)
3418  (cond ((and term-current-row (>= row term-current-row))
3419	 ;; I assume this is a worthwhile optimization.
3420	 (term-vertical-motion 0)
3421	 (setq term-current-column term-start-line-column)
3422	 (setq row (- row term-current-row)))
3423	(t
3424	 (term-goto-home)))
3425  (term-down row)
3426  (term-move-columns col))
3427
3428; The page is full, so enter "pager" mode, and wait for input.
3429
3430(defun term-process-pager ()
3431  (when (not term-pager-break-map)
3432    (let* ((map (make-keymap))
3433	   (i 0) tmp)
3434;	(while (< i 128)
3435;	  (define-key map (make-string 1 i) 'term-send-raw)
3436;	  (setq i (1+ i)))
3437      (define-key map "\e"
3438	(lookup-key (current-global-map) "\e"))
3439      (define-key map "\C-x"
3440	(lookup-key (current-global-map) "\C-x"))
3441      (define-key map "\C-u"
3442	(lookup-key (current-global-map) "\C-u"))
3443      (define-key map " " 'term-pager-page)
3444      (define-key map "\r" 'term-pager-line)
3445      (define-key map "?" 'term-pager-help)
3446      (define-key map "h" 'term-pager-help)
3447      (define-key map "b" 'term-pager-back-page)
3448      (define-key map "\177" 'term-pager-back-line)
3449      (define-key map "q" 'term-pager-discard)
3450      (define-key map "D" 'term-pager-disable)
3451      (define-key map "<" 'term-pager-bob)
3452      (define-key map ">" 'term-pager-eob)
3453
3454      ;; Add menu bar.
3455      (unless (featurep 'xemacs)
3456	(define-key map [menu-bar terminal] term-terminal-menu)
3457	(define-key map [menu-bar signals] term-signals-menu)
3458	(setq tmp (make-sparse-keymap "More pages?"))
3459	(define-key tmp [help] '("Help" . term-pager-help))
3460	(define-key tmp [disable]
3461	  '("Disable paging" . term-fake-pager-disable))
3462	(define-key tmp [discard]
3463	  '("Discard remaining output" . term-pager-discard))
3464	(define-key tmp [eob] '("Goto to end" . term-pager-eob))
3465	(define-key tmp [bob] '("Goto to beginning" . term-pager-bob))
3466	(define-key tmp [line] '("1 line forwards" . term-pager-line))
3467	(define-key tmp [bline] '("1 line backwards" . term-pager-back-line))
3468	(define-key tmp [back] '("1 page backwards" . term-pager-back-page))
3469	(define-key tmp [page] '("1 page forwards" . term-pager-page))
3470	(define-key map [menu-bar page] (cons "More pages?" tmp))
3471	)
3472
3473      (setq term-pager-break-map map)))
3474;  (let ((process (get-buffer-process (current-buffer))))
3475;    (stop-process process))
3476  (setq term-pager-old-local-map (current-local-map))
3477  (use-local-map term-pager-break-map)
3478  (make-local-variable 'term-old-mode-line-format)
3479  (setq term-old-mode-line-format mode-line-format)
3480  (setq mode-line-format
3481	(list "--  **MORE**  "
3482	      mode-line-buffer-identification
3483	      " [Type ? for help] "
3484	      "%-"))
3485  (force-mode-line-update))
3486
3487(defun term-pager-line (lines)
3488  (interactive "p")
3489  (let* ((moved (vertical-motion (1+ lines)))
3490	 (deficit (- lines moved)))
3491    (when (> moved lines)
3492      (backward-char))
3493    (cond ((<= deficit 0) ;; OK, had enough in the buffer for request.
3494	   (recenter (1- term-height)))
3495	  ((term-pager-continue deficit)))))
3496
3497(defun term-pager-page (arg)
3498  "Proceed past the **MORE** break, allowing the next page of output to appear."
3499  (interactive "p")
3500  (term-pager-line (* arg term-height)))
3501
3502; Pager mode command to go to beginning of buffer
3503(defun term-pager-bob ()
3504  (interactive)
3505  (goto-char (point-min))
3506  (when (= (vertical-motion term-height) term-height)
3507    (backward-char))
3508  (recenter (1- term-height)))
3509
3510; pager mode command to go to end of buffer
3511(defun term-pager-eob ()
3512  (interactive)
3513  (goto-char term-home-marker)
3514  (recenter 0)
3515  (goto-char (process-mark (get-buffer-process (current-buffer)))))
3516
3517(defun term-pager-back-line (lines)
3518  (interactive "p")
3519  (vertical-motion (- 1 lines))
3520  (if (not (bobp))
3521      (backward-char)
3522    (beep)
3523    ;; Move cursor to end of window.
3524    (vertical-motion term-height)
3525    (backward-char))
3526  (recenter (1- term-height)))
3527
3528(defun term-pager-back-page (arg)
3529  (interactive "p")
3530  (term-pager-back-line (* arg term-height)))
3531
3532(defun term-pager-discard ()
3533  (interactive)
3534  (setq term-terminal-parameter "")
3535  (interrupt-process nil t)
3536  (term-pager-continue term-height))
3537
3538; Disable pager processing.
3539; Only callable while in pager mode.  (Contrast term-disable-pager.)
3540(defun term-pager-disable ()
3541  (interactive)
3542  (if (term-handling-pager)
3543      (term-pager-continue nil)
3544    (setq term-pager-count nil))
3545  (term-update-mode-line))
3546
3547; Enable pager processing.
3548(defun term-pager-enable ()
3549  (interactive)
3550  (or (term-pager-enabled)
3551      (setq term-pager-count 0)) ;; Or maybe set to (term-current-row) ??
3552  (term-update-mode-line))
3553
3554(defun term-pager-toggle ()
3555  (interactive)
3556  (if (term-pager-enabled) (term-pager-disable) (term-pager-enable)))
3557
3558(unless (featurep 'xemacs)
3559 (defalias 'term-fake-pager-enable 'term-pager-toggle)
3560 (defalias 'term-fake-pager-disable 'term-pager-toggle)
3561 (put 'term-char-mode 'menu-enable '(term-in-line-mode))
3562 (put 'term-line-mode 'menu-enable '(term-in-char-mode))
3563 (put 'term-fake-pager-enable 'menu-enable '(not term-pager-count))
3564 (put 'term-fake-pager-disable 'menu-enable 'term-pager-count))
3565
3566(defun term-pager-help ()
3567  "Provide help on commands available in a terminal-emulator **MORE** break."
3568  (interactive)
3569  (message "Terminal-emulator pager break help...")
3570  (sit-for 0)
3571  (with-electric-help
3572    (function (lambda ()
3573		(princ (substitute-command-keys
3574"\\<term-pager-break-map>\
3575Terminal-emulator MORE break.\n\
3576Type one of the following keys:\n\n\
3577\\[term-pager-page]\t\tMove forward one page.\n\
3578\\[term-pager-line]\t\tMove forward one line.\n\
3579\\[universal-argument] N \\[term-pager-page]\tMove N pages forward.\n\
3580\\[universal-argument] N \\[term-pager-line]\tMove N lines forward.\n\
3581\\[universal-argument] N \\[term-pager-back-line]\tMove N lines back.\n\
3582\\[universal-argument] N \\[term-pager-back-page]\t\tMove N pages back.\n\
3583\\[term-pager-bob]\t\tMove to the beginning of the buffer.\n\
3584\\[term-pager-eob]\t\tMove to the end of the buffer.\n\
3585\\[term-pager-discard]\t\tKill pending output and kill process.\n\
3586\\[term-pager-disable]\t\tDisable PAGER handling.\n\n\
3587\\{term-pager-break-map}\n\
3588Any other key is passed through to the program
3589running under the terminal emulator and disables pager processing until
3590all pending output has been dealt with."))
3591		nil))))
3592
3593(defun term-pager-continue (new-count)
3594  (let ((process (get-buffer-process (current-buffer))))
3595    (use-local-map term-pager-old-local-map)
3596    (setq term-pager-old-local-map nil)
3597    (setq mode-line-format term-old-mode-line-format)
3598    (force-mode-line-update)
3599    (setq term-pager-count new-count)
3600    (set-process-filter process term-pager-old-filter)
3601    (funcall term-pager-old-filter process "")
3602    (continue-process process)))
3603
3604;; Make sure there are DOWN blank lines below the current one.
3605;; Return 0 if we're unable (because of PAGER handling), else return DOWN.
3606
3607(defun term-handle-scroll (down)
3608  (let ((scroll-needed
3609	 (- (+ (term-current-row) down)
3610	    (if (< down 0) term-scroll-start term-scroll-end))))
3611    (when (or (and (< down 0) (< scroll-needed 0))
3612	      (and (> down 0) (> scroll-needed 0)))
3613      (let ((save-point (copy-marker (point))) (save-top))
3614	(goto-char term-home-marker)
3615	(cond (term-scroll-with-delete
3616	       (if (< down 0)
3617		   (progn
3618		     ;; Delete scroll-needed lines at term-scroll-end,
3619		     ;; then insert scroll-needed lines.
3620		     (term-vertical-motion term-scroll-end)
3621		     (end-of-line)
3622		     (setq save-top (point))
3623		     (term-vertical-motion scroll-needed)
3624		     (end-of-line)
3625		     (delete-region save-top (point))
3626		     (goto-char save-point)
3627		     (setq down (- scroll-needed down))
3628		     (term-vertical-motion down))
3629		 ;; Delete scroll-needed lines at term-scroll-start.
3630		 (term-vertical-motion term-scroll-start)
3631		 (setq save-top (point))
3632		 (term-vertical-motion scroll-needed)
3633		 (delete-region save-top (point))
3634		 (goto-char save-point)
3635		 (term-vertical-motion down)
3636		 (term-adjust-current-row-cache (- scroll-needed)))
3637	       (setq term-current-column nil)
3638	       (term-insert-char ?\n (abs scroll-needed)))
3639	      ((and (numberp term-pager-count)
3640		    (< (setq term-pager-count (- term-pager-count down))
3641		       0))
3642	       (setq down 0)
3643	       (term-process-pager))
3644	      (t
3645	       (term-adjust-current-row-cache (- scroll-needed))
3646	       (term-vertical-motion scroll-needed)
3647	       (set-marker term-home-marker (point))))
3648	(goto-char save-point)
3649	(set-marker save-point nil))))
3650  down)
3651
3652(defun term-down (down &optional check-for-scroll)
3653  "Move down DOWN screen lines vertically."
3654  (let ((start-column (term-horizontal-column)))
3655    (when (and check-for-scroll (or term-scroll-with-delete term-pager-count))
3656      (setq down (term-handle-scroll down)))
3657    (unless (and (= term-current-row 0) (< down 0))
3658      (term-adjust-current-row-cache down)
3659      (when (or (/= (point) (point-max)) (< down 0))
3660	(setq down (- down (term-vertical-motion down)))))
3661    (cond ((>= down 0)
3662	   ;; Extend buffer with extra blank lines if needed.
3663	   (term-insert-char ?\n down)
3664	   (setq term-current-column 0)
3665	   (setq term-start-line-column 0))
3666	  (t
3667	   (when (= term-current-row 0)
3668	     ;; Insert lines if at the beginning.
3669	     (save-excursion (term-insert-char ?\n (- down)))
3670	     (save-excursion
3671	       (let (p)
3672		 ;; Delete lines from the end.
3673		 (forward-line term-height)
3674		 (setq p (point))
3675		 (forward-line (- down))
3676		 (delete-region p (point)))))
3677	   (setq term-current-column 0)
3678	   (setq term-start-line-column (current-column))))
3679    (when start-column
3680      (term-move-columns start-column))))
3681
3682;; Assuming point is at the beginning of a screen line,
3683;; if the line above point wraps around, add a ?\n to undo the wrapping.
3684;; FIXME:  Probably should be called more than it is.
3685(defun term-unwrap-line ()
3686  (when (not (bolp)) (insert-before-markers ?\n)))
3687
3688(defun term-erase-in-line (kind)
3689  (when (= kind 1) ;; erase left of point
3690    (let ((cols (term-horizontal-column)) (saved-point (point)))
3691      (term-vertical-motion 0)
3692      (delete-region (point) saved-point)
3693      (term-insert-char ?  cols)))
3694  (when (not (eq kind 1)) ;; erase right of point
3695    (let ((saved-point (point))
3696	  (wrapped (and (zerop (term-horizontal-column))
3697			(not (zerop (term-current-column))))))
3698      (term-vertical-motion 1)
3699      (delete-region saved-point (point))
3700      ;; wrapped is true if we're at the beginning of screen line,
3701      ;; but not a buffer line.  If we delete the current screen line
3702      ;; that will make the previous line no longer wrap, and (because
3703      ;; of the way Emacs display works) point will be at the end of
3704      ;; the previous screen line rather then the beginning of the
3705      ;; current one.  To avoid that, we make sure that current line
3706      ;; contain a space, to force the previous line to continue to wrap.
3707      ;; We could do this always, but it seems preferable to not add the
3708      ;; extra space when wrapped is false.
3709      (when wrapped
3710	(insert ? ))
3711      (insert ?\n)
3712      (put-text-property saved-point (point) 'face 'default)
3713      (goto-char saved-point))))
3714
3715(defun term-erase-in-display (kind)
3716  "Erases (that is blanks out) part of the window.
3717If KIND is 0, erase from (point) to (point-max);
3718if KIND is 1, erase from home to point; else erase from home to point-max.
3719Should only be called when point is at the start of a screen line."
3720  (term-handle-deferred-scroll)
3721  (cond ((eq term-terminal-parameter 0)
3722	 (delete-region (point) (point-max))
3723	 (term-unwrap-line))
3724	((let ((row (term-current-row))
3725	      (col (term-horizontal-column))
3726	      (start-region term-home-marker)
3727	      (end-region (if (eq kind 1) (point) (point-max))))
3728	   (delete-region start-region end-region)
3729	   (term-unwrap-line)
3730	   (when (eq kind 1)
3731	     (term-insert-char ?\n row))
3732	   (setq term-current-column nil)
3733	   (setq term-current-row nil)
3734	   (term-goto row col)))))
3735
3736(defun term-delete-chars (count)
3737  (let ((save-point (point)))
3738    (term-vertical-motion 1)
3739    (term-unwrap-line)
3740    (goto-char save-point)
3741    (move-to-column (+ (term-current-column) count) t)
3742    (delete-region save-point (point))))
3743
3744;;; Insert COUNT spaces after point, but do not change any of
3745;;; following screen lines.  Hence we may have to delete characters
3746;;; at the end of this screen line to make room.
3747
3748(defun term-insert-spaces (count)
3749  (let ((save-point (point)) (save-eol) (pnt-at-eol))
3750    (term-vertical-motion 1)
3751    (when (bolp)
3752      (backward-char))
3753    (setq save-eol (point))
3754    (save-excursion
3755      (end-of-line)
3756      (setq pnt-at-eol (point)))
3757    (move-to-column (+ (term-start-line-column) (- term-width count)) t)
3758    ;; If move-to-column extends the current line it will use the face
3759    ;; from the last character on the line, set the face for the chars
3760    ;; to default.
3761    (when (>= (point) pnt-at-eol)
3762      (put-text-property pnt-at-eol (point) 'face 'default))
3763    (when (> save-eol (point))
3764      (delete-region (point) save-eol))
3765    (goto-char save-point)
3766    (term-insert-char ?  count)
3767    (goto-char save-point)))
3768
3769(defun term-delete-lines (lines)
3770  (let ((start (point))
3771	(save-current-column term-current-column)
3772	(save-start-line-column term-start-line-column)
3773	(save-current-row (term-current-row)))
3774    ;; The number of inserted lines shouldn't exceed the scroll region end.
3775    ;; The `term-scroll-end' line is part of the scrolling region, so
3776    ;; we need to go one line past it in order to ensure correct
3777    ;; scrolling.
3778    (when (> (+ save-current-row lines) (1+ term-scroll-end))
3779      (setq lines (- lines (- (+ save-current-row lines) (1+ term-scroll-end)))))
3780    (term-down lines)
3781    (delete-region start (point))
3782    (term-down (- (1+ term-scroll-end) save-current-row lines))
3783    (term-insert-char ?\n lines)
3784    (setq term-current-column save-current-column)
3785    (setq term-start-line-column save-start-line-column)
3786    (setq term-current-row save-current-row)
3787    (goto-char start)))
3788
3789(defun term-insert-lines (lines)
3790  (let ((start (point))
3791	(start-deleted)
3792	(save-current-column term-current-column)
3793	(save-start-line-column term-start-line-column)
3794	(save-current-row (term-current-row)))
3795    ;; Inserting lines should take into account the scroll region.
3796    ;; The `term-scroll-end' line is part of the scrolling region, so
3797    ;; we need to go one line past it in order to ensure correct
3798    ;; scrolling.
3799    (if (< save-current-row term-scroll-start)
3800	;; If point is before scroll start,
3801	(progn
3802	  (setq lines (- lines (- term-scroll-start save-current-row)))
3803	  (term-down (- term-scroll-start save-current-row))
3804	  (setq start (point)))
3805      ;; The number of inserted lines shouldn't exceed the scroll region end.
3806      (when (> (+ save-current-row lines) (1+ term-scroll-end))
3807	(setq lines (- lines (- (+ save-current-row lines)(1+ term-scroll-end)))))
3808      (term-down (- (1+ term-scroll-end) save-current-row lines)))
3809    (setq start-deleted (point))
3810    (term-down lines)
3811    (delete-region start-deleted (point))
3812    (goto-char start)
3813    (setq term-current-column save-current-column)
3814    (setq term-start-line-column save-start-line-column)
3815    (setq term-current-row save-current-row)
3816    (term-insert-char ?\n lines)
3817    (goto-char start)))
3818
3819(defun term-start-output-log (name)
3820  "Record raw inferior process output in a buffer."
3821  (interactive (list (if term-log-buffer
3822			 nil
3823		       (read-buffer "Record output in buffer: "
3824				    (format "%s output-log"
3825					    (buffer-name (current-buffer)))
3826				    nil))))
3827  (if (or (null name) (equal name ""))
3828      (progn (setq term-log-buffer nil)
3829	     (message "Output logging off."))
3830    (if (get-buffer name)
3831	nil
3832      (save-excursion
3833	(set-buffer (get-buffer-create name))
3834	(fundamental-mode)
3835	(buffer-disable-undo (current-buffer))
3836	(erase-buffer)))
3837    (setq term-log-buffer (get-buffer name))
3838    (message "Recording terminal emulator output into buffer \"%s\""
3839	     (buffer-name term-log-buffer))))
3840
3841(defun term-stop-output-log ()
3842  "Discontinue raw inferior process logging."
3843  (interactive)
3844  (term-start-output-log nil))
3845
3846(defun term-show-maximum-output ()
3847  "Put the end of the buffer at the bottom of the window."
3848  (interactive)
3849  (goto-char (point-max))
3850  (recenter -1))
3851
3852;;; Do the user's customisation...
3853
3854(defvar term-load-hook nil
3855  "This hook is run when term is loaded in.
3856This is a good place to put keybindings.")
3857
3858(run-hooks 'term-load-hook)
3859
3860
3861;;; Filename/command/history completion in a buffer
3862;;; ===========================================================================
3863;;; Useful completion functions, courtesy of the Ergo group.
3864
3865;;; Six commands:
3866;;; term-dynamic-complete		Complete or expand command, filename,
3867;;;                                     history at point.
3868;;; term-dynamic-complete-filename	Complete filename at point.
3869;;; term-dynamic-list-filename-completions List completions in help buffer.
3870;;; term-replace-by-expanded-filename	Expand and complete filename at point;
3871;;;					replace with expanded/completed name.
3872;;; term-dynamic-simple-complete	Complete stub given candidates.
3873
3874;;; These are not installed in the term-mode keymap.  But they are
3875;;; available for people who want them.  Shell-mode installs them:
3876;;; (define-key shell-mode-map "\t" 'term-dynamic-complete)
3877;;; (define-key shell-mode-map "\M-?"
3878;;;             'term-dynamic-list-filename-completions)))
3879;;;
3880;;; Commands like this are fine things to put in load hooks if you
3881;;; want them present in specific modes.
3882
3883(defvar term-completion-autolist nil
3884  "*If non-nil, automatically list possibilities on partial completion.
3885This mirrors the optional behavior of tcsh.")
3886
3887(defvar term-completion-addsuffix t
3888  "*If non-nil, add a `/' to completed directories, ` ' to file names.
3889If a cons pair, it should be of the form (DIRSUFFIX . FILESUFFIX) where
3890DIRSUFFIX and FILESUFFIX are strings added on unambiguous or exact
3891completion.  This mirrors the optional behavior of tcsh.")
3892
3893(defvar term-completion-recexact nil
3894  "*If non-nil, use shortest completion if characters cannot be added.
3895This mirrors the optional behavior of tcsh.
3896
3897A non-nil value is useful if `term-completion-autolist' is non-nil too.")
3898
3899(defvar term-completion-fignore nil
3900  "*List of suffixes to be disregarded during file completion.
3901This mirrors the optional behavior of bash and tcsh.
3902
3903Note that this applies to `term-dynamic-complete-filename' only.")
3904
3905(defvar term-file-name-prefix ""
3906  "Prefix prepended to absolute file names taken from process input.
3907This is used by term's and shell's completion functions, and by shell's
3908directory tracking functions.")
3909
3910
3911(defun term-directory (directory)
3912  ;; Return expanded DIRECTORY, with `term-file-name-prefix' if absolute.
3913  (expand-file-name (if (file-name-absolute-p directory)
3914			(concat term-file-name-prefix directory)
3915		      directory)))
3916
3917
3918(defun term-word (word-chars)
3919  "Return the word of WORD-CHARS at point, or nil if none is found.
3920Word constituents are considered to be those in WORD-CHARS, which is like the
3921inside of a \"[...]\" (see `skip-chars-forward')."
3922  (save-excursion
3923    (let ((limit (point))
3924	  (word (concat "[" word-chars "]"))
3925	  (non-word (concat "[^" word-chars "]")))
3926      (when (re-search-backward non-word nil 'move)
3927	(forward-char 1))
3928      ;; Anchor the search forwards.
3929      (if (or (eolp) (looking-at non-word))
3930	  nil
3931	(re-search-forward (concat word "+") limit)
3932	(buffer-substring (match-beginning 0) (match-end 0))))))
3933
3934
3935(defun term-match-partial-filename ()
3936  "Return the filename at point, or nil if none is found.
3937Environment variables are substituted.  See `term-word'."
3938  (let ((filename (term-word "~/A-Za-z0-9+@:_.$#,={}-")))
3939    (and filename (substitute-in-file-name filename))))
3940
3941
3942(defun term-dynamic-complete ()
3943  "Dynamically perform completion at point.
3944Calls the functions in `term-dynamic-complete-functions' to perform
3945completion until a function returns non-nil, at which point completion is
3946assumed to have occurred."
3947  (interactive)
3948  (let ((functions term-dynamic-complete-functions))
3949    (while (and functions (null (funcall (car functions))))
3950      (setq functions (cdr functions)))))
3951
3952
3953(defun term-dynamic-complete-filename ()
3954  "Dynamically complete the filename at point.
3955Completes if after a filename.  See `term-match-partial-filename' and
3956`term-dynamic-complete-as-filename'.
3957This function is similar to `term-replace-by-expanded-filename', except that
3958it won't change parts of the filename already entered in the buffer; it just
3959adds completion characters to the end of the filename.  A completions listing
3960may be shown in a help buffer if completion is ambiguous.
3961
3962Completion is dependent on the value of `term-completion-addsuffix',
3963`term-completion-recexact' and `term-completion-fignore', and the timing of
3964completions listing is dependent on the value of `term-completion-autolist'.
3965
3966Returns t if successful."
3967  (interactive)
3968  (when (term-match-partial-filename)
3969    (prog2 (or (eq (selected-window) (minibuffer-window))
3970	       (message "Completing file name..."))
3971	(term-dynamic-complete-as-filename))))
3972
3973(defun term-dynamic-complete-as-filename ()
3974  "Dynamically complete at point as a filename.
3975See `term-dynamic-complete-filename'.  Returns t if successful."
3976  (let* ((completion-ignore-case nil)
3977	 (completion-ignored-extensions term-completion-fignore)
3978	 (success t)
3979	 (dirsuffix (cond ((not term-completion-addsuffix) "")
3980			  ((not (consp term-completion-addsuffix)) "/")
3981			  (t (car term-completion-addsuffix))))
3982	 (filesuffix (cond ((not term-completion-addsuffix) "")
3983			   ((not (consp term-completion-addsuffix)) " ")
3984			   (t (cdr term-completion-addsuffix))))
3985	 (filename (or (term-match-partial-filename) ""))
3986	 (pathdir (file-name-directory filename))
3987	 (pathnondir (file-name-nondirectory filename))
3988	 (directory (if pathdir (term-directory pathdir) default-directory))
3989	 (completion (file-name-completion pathnondir directory))
3990	 (mini-flag (eq (selected-window) (minibuffer-window))))
3991    (cond ((null completion)
3992           (message "No completions of %s" filename)
3993	   (setq success nil))
3994          ((eq completion t)            ; Means already completed "file".
3995           (when term-completion-addsuffix (insert " "))
3996           (or mini-flag (message "Sole completion")))
3997          ((string-equal completion "") ; Means completion on "directory/".
3998           (term-dynamic-list-filename-completions))
3999          (t                            ; Completion string returned.
4000           (let ((file (concat (file-name-as-directory directory) completion)))
4001             (insert (substring (directory-file-name completion)
4002                                (length pathnondir)))
4003             (cond ((symbolp (file-name-completion completion directory))
4004                    ;; We inserted a unique completion.
4005		    (insert (if (file-directory-p file) dirsuffix filesuffix))
4006                    (or mini-flag (message "Completed")))
4007                   ((and term-completion-recexact term-completion-addsuffix
4008                         (string-equal pathnondir completion)
4009                         (file-exists-p file))
4010                    ;; It's not unique, but user wants shortest match.
4011		    (insert (if (file-directory-p file) dirsuffix filesuffix))
4012                    (or mini-flag (message "Completed shortest")))
4013                   ((or term-completion-autolist
4014                        (string-equal pathnondir completion))
4015                    ;; It's not unique, list possible completions.
4016                    (term-dynamic-list-filename-completions))
4017                   (t
4018                    (or mini-flag (message "Partially completed")))))))
4019    success))
4020
4021
4022(defun term-replace-by-expanded-filename ()
4023  "Dynamically expand and complete the filename at point.
4024Replace the filename with an expanded, canonicalized and completed replacement.
4025\"Expanded\" means environment variables (e.g., $HOME) and `~'s are replaced
4026with the corresponding directories.  \"Canonicalized\" means `..'  and `.' are
4027removed, and the filename is made absolute instead of relative.  For expansion
4028see `expand-file-name' and `substitute-in-file-name'.  For completion see
4029`term-dynamic-complete-filename'."
4030  (interactive)
4031  (replace-match (expand-file-name (term-match-partial-filename)) t t)
4032  (term-dynamic-complete-filename))
4033
4034
4035(defun term-dynamic-simple-complete (stub candidates)
4036  "Dynamically complete STUB from CANDIDATES list.
4037This function inserts completion characters at point by completing STUB from
4038the strings in CANDIDATES.  A completions listing may be shown in a help buffer
4039if completion is ambiguous.
4040
4041Returns nil if no completion was inserted.
4042Returns `sole' if completed with the only completion match.
4043Returns `shortest' if completed with the shortest of the completion matches.
4044Returns `partial' if completed as far as possible with the completion matches.
4045Returns `listed' if a completion listing was shown.
4046
4047See also `term-dynamic-complete-filename'."
4048  (let* ((completion-ignore-case nil)
4049	 (candidates (mapcar (function (lambda (x) (list x))) candidates))
4050	 (completions (all-completions stub candidates)))
4051    (cond ((null completions)
4052 	   (message "No completions of %s" stub)
4053	   nil)
4054 	  ((= 1 (length completions))	; Gotcha!
4055 	   (let ((completion (car completions)))
4056 	     (if (string-equal completion stub)
4057 		 (message "Sole completion")
4058 	       (insert (substring completion (length stub)))
4059 	       (message "Completed"))
4060	     (when term-completion-addsuffix (insert " "))
4061	     'sole))
4062 	  (t				; There's no unique completion.
4063 	   (let ((completion (try-completion stub candidates)))
4064 	     ;; Insert the longest substring.
4065 	     (insert (substring completion (length stub)))
4066 	     (cond ((and term-completion-recexact term-completion-addsuffix
4067 			 (string-equal stub completion)
4068 			 (member completion completions))
4069 		    ;; It's not unique, but user wants shortest match.
4070 		    (insert " ")
4071 		    (message "Completed shortest")
4072		    'shortest)
4073 		   ((or term-completion-autolist
4074 			(string-equal stub completion))
4075 		    ;; It's not unique, list possible completions.
4076 		    (term-dynamic-list-completions completions)
4077		    'listed)
4078 		   (t
4079		    (message "Partially completed")
4080		    'partial)))))))
4081
4082
4083(defun term-dynamic-list-filename-completions ()
4084  "List in help buffer possible completions of the filename at point."
4085  (interactive)
4086  (let* ((completion-ignore-case nil)
4087	 (filename (or (term-match-partial-filename) ""))
4088	 (pathdir (file-name-directory filename))
4089	 (pathnondir (file-name-nondirectory filename))
4090	 (directory (if pathdir (term-directory pathdir) default-directory))
4091	 (completions (file-name-all-completions pathnondir directory)))
4092    (if completions
4093	(term-dynamic-list-completions completions)
4094      (message "No completions of %s" filename))))
4095
4096
4097(defun term-dynamic-list-completions (completions)
4098  "List in help buffer sorted COMPLETIONS.
4099Typing SPC flushes the help buffer."
4100  (let ((conf (current-window-configuration)))
4101    (with-output-to-temp-buffer "*Completions*"
4102      (display-completion-list (sort completions 'string-lessp)))
4103    (message "Hit space to flush")
4104    (let (key first)
4105      (if (save-excursion
4106	    (set-buffer (get-buffer "*Completions*"))
4107	    (setq key (read-key-sequence nil)
4108		  first (aref key 0))
4109	    (and (consp first)
4110		 (eq (window-buffer (posn-window (event-start first)))
4111		     (get-buffer "*Completions*"))
4112		 (eq (key-binding key) 'mouse-choose-completion)))
4113	  ;; If the user does mouse-choose-completion with the mouse,
4114	  ;; execute the command, then delete the completion window.
4115	  (progn
4116	    (mouse-choose-completion first)
4117	    (set-window-configuration conf))
4118	(if (eq first ?\s)
4119	    (set-window-configuration conf)
4120	  (setq unread-command-events (listify-key-sequence key)))))))
4121
4122;;; I need a make-term that doesn't surround with *s -mm
4123(defun term-ansi-make-term (name program &optional startfile &rest switches)
4124"Make a term process NAME in a buffer, running PROGRAM.
4125The name of the buffer is NAME.
4126If there is already a running process in that buffer, it is not restarted.
4127Optional third arg STARTFILE is the name of a file to send the contents of to
4128the process.  Any more args are arguments to PROGRAM."
4129  (let ((buffer (get-buffer-create name )))
4130    ;; If no process, or nuked process, crank up a new one and put buffer in
4131    ;; term mode.  Otherwise, leave buffer and existing process alone.
4132    (cond ((not (term-check-proc buffer))
4133	   (save-excursion
4134	     (set-buffer buffer)
4135	     (term-mode)) ; Install local vars, mode, keymap, ...
4136	   (term-exec buffer name program startfile switches)))
4137    buffer))
4138
4139(defvar term-ansi-buffer-name nil)
4140(defvar term-ansi-default-program nil)
4141(defvar term-ansi-buffer-base-name nil)
4142
4143;;;###autoload
4144(defun ansi-term (program &optional new-buffer-name)
4145  "Start a terminal-emulator in a new buffer."
4146  (interactive (list (read-from-minibuffer "Run program: "
4147					   (or explicit-shell-file-name
4148					       (getenv "ESHELL")
4149					       (getenv "SHELL")
4150					       "/bin/sh"))))
4151
4152  ;; Pick the name of the new buffer.
4153  (setq term-ansi-buffer-name
4154	(if new-buffer-name
4155	    new-buffer-name
4156	  (if term-ansi-buffer-base-name
4157	      (if (eq term-ansi-buffer-base-name t)
4158		  (file-name-nondirectory program)
4159		term-ansi-buffer-base-name)
4160	    "ansi-term")))
4161
4162  (setq term-ansi-buffer-name (concat "*" term-ansi-buffer-name "*"))
4163
4164  ;; In order to have more than one term active at a time
4165  ;; I'd like to have the term names have the *term-ansi-term<?>* form,
4166  ;; for now they have the *term-ansi-term*<?> form but we'll see...
4167
4168  (setq term-ansi-buffer-name (generate-new-buffer-name term-ansi-buffer-name))
4169  (setq term-ansi-buffer-name (term-ansi-make-term term-ansi-buffer-name program))
4170
4171  (set-buffer term-ansi-buffer-name)
4172  (term-mode)
4173  (term-char-mode)
4174
4175;; I wanna have find-file on C-x C-f -mm
4176;; your mileage may definitely vary, maybe it's better to put this in your
4177;; .emacs ...
4178
4179  (term-set-escape-char ?\C-x)
4180
4181  (switch-to-buffer term-ansi-buffer-name))
4182
4183
4184;;; Converting process modes to use term mode
4185;;; ===========================================================================
4186;;; Renaming variables
4187;;; Most of the work is renaming variables and functions.  These are the common
4188;;; ones:
4189;;; Local variables:
4190;;;	last-input-start	term-last-input-start
4191;;; 	last-input-end		term-last-input-end
4192;;;	shell-prompt-pattern	term-prompt-regexp
4193;;;     shell-set-directory-error-hook <no equivalent>
4194;;; Miscellaneous:
4195;;;	shell-set-directory	<unnecessary>
4196;;; 	shell-mode-map		term-mode-map
4197;;; Commands:
4198;;;	shell-send-input	term-send-input
4199;;;	shell-send-eof		term-delchar-or-maybe-eof
4200;;; 	kill-shell-input	term-kill-input
4201;;;	interrupt-shell-subjob	term-interrupt-subjob
4202;;;	stop-shell-subjob	term-stop-subjob
4203;;;	quit-shell-subjob	term-quit-subjob
4204;;;	kill-shell-subjob	term-kill-subjob
4205;;;	kill-output-from-shell	term-kill-output
4206;;;	show-output-from-shell	term-show-output
4207;;;	copy-last-shell-input	Use term-previous-input/term-next-input
4208;;;
4209;;; SHELL-SET-DIRECTORY is gone, its functionality taken over by
4210;;; SHELL-DIRECTORY-TRACKER, the shell mode's term-input-filter-functions.
4211;;; Term mode does not provide functionality equivalent to
4212;;; shell-set-directory-error-hook; it is gone.
4213;;;
4214;;; term-last-input-start is provided for modes which want to munge
4215;;; the buffer after input is sent, perhaps because the inferior
4216;;; insists on echoing the input.  The LAST-INPUT-START variable in
4217;;; the old shell package was used to implement a history mechanism,
4218;;; but you should think twice before using term-last-input-start
4219;;; for this; the input history ring often does the job better.
4220;;;
4221;;; If you are implementing some process-in-a-buffer mode, called foo-mode, do
4222;;; *not* create the term-mode local variables in your foo-mode function.
4223;;; This is not modular.  Instead, call term-mode, and let *it* create the
4224;;; necessary term-specific local variables.  Then create the
4225;;; foo-mode-specific local variables in foo-mode.  Set the buffer's keymap to
4226;;; be foo-mode-map, and its mode to be foo-mode.  Set the term-mode hooks
4227;;; (term-{prompt-regexp, input-filter, input-filter-functions,
4228;;; get-old-input) that need to be different from the defaults.  Call
4229;;; foo-mode-hook, and you're done.  Don't run the term-mode hook yourself;
4230;;; term-mode will take care of it.  The following example, from shell.el,
4231;;; is typical:
4232;;;
4233;;; (defvar shell-mode-map '())
4234;;; (cond ((not shell-mode-map)
4235;;;        (setq shell-mode-map (copy-keymap term-mode-map))
4236;;;        (define-key shell-mode-map "\C-c\C-f" 'shell-forward-command)
4237;;;        (define-key shell-mode-map "\C-c\C-b" 'shell-backward-command)
4238;;;        (define-key shell-mode-map "\t" 'term-dynamic-complete)
4239;;;        (define-key shell-mode-map "\M-?"
4240;;;          'term-dynamic-list-filename-completions)))
4241;;;
4242;;; (defun shell-mode ()
4243;;;   (interactive)
4244;;;   (term-mode)
4245;;;   (setq term-prompt-regexp shell-prompt-pattern)
4246;;;   (setq major-mode 'shell-mode)
4247;;;   (setq mode-name "Shell")
4248;;;   (use-local-map shell-mode-map)
4249;;;   (make-local-variable 'shell-directory-stack)
4250;;;   (setq shell-directory-stack nil)
4251;;;   (add-hook 'term-input-filter-functions 'shell-directory-tracker)
4252;;;   (run-mode-hooks 'shell-mode-hook))
4253;;;
4254;;;
4255;;; Completion for term-mode users
4256;;;
4257;;; For modes that use term-mode, term-dynamic-complete-functions is the
4258;;; hook to add completion functions to.  Functions on this list should return
4259;;; non-nil if completion occurs (i.e., further completion should not occur).
4260;;; You could use term-dynamic-simple-complete to do the bulk of the
4261;;; completion job.
4262
4263(provide 'term)
4264
4265;;; arch-tag: eee16bc8-2cd7-4147-9534-a5694752f716
4266;;; term.el ends here
4267