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Annotation of GNUtools/emacs/lisp/shell.el, revision 1.1

1.1     ! root        1: ;; Run subshell under Emacs
        !             2: ;; Copyright (C) 1985, 1986, 1987, 1988 Free Software Foundation, Inc.
        !             3: 
        !             4: ;; This file is part of GNU Emacs.
        !             5: 
        !             6: ;; GNU Emacs is free software; you can redistribute it and/or modify
        !             7: ;; it under the terms of the GNU General Public License as published by
        !             8: ;; the Free Software Foundation; either version 1, or (at your option)
        !             9: ;; any later version.
        !            10: 
        !            11: ;; GNU Emacs is distributed in the hope that it will be useful,
        !            12: ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13: ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            14: ;; GNU General Public License for more details.
        !            15: 
        !            16: ;; You should have received a copy of the GNU General Public License
        !            17: ;; along with GNU Emacs; see the file COPYING.  If not, write to
        !            18: ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
        !            19: 
        !            20: 
        !            21: (provide 'shell)
        !            22: 
        !            23: (defvar last-input-start nil
        !            24:   "In a shell-mode buffer, marker for start of last unit of input.")
        !            25: (defvar last-input-end nil
        !            26:   "In a shell-mode buffer, marker for end of last unit of input.")
        !            27: 
        !            28: (defvar shell-mode-map nil)
        !            29: 
        !            30: (defvar shell-directory-stack nil
        !            31:   "List of directories saved by pushd in this buffer's shell.")
        !            32: 
        !            33: (defvar shell-popd-regexp "popd"
        !            34:   "*Regexp to match subshell commands equivalent to popd.")
        !            35: 
        !            36: (defvar shell-pushd-regexp "pushd"
        !            37:   "*Regexp to match subshell commands equivalent to pushd.")
        !            38: 
        !            39: (defvar shell-cd-regexp "cd"
        !            40:   "*Regexp to match subshell commands equivalent to cd.")
        !            41: 
        !            42: (defvar explicit-shell-file-name nil
        !            43:   "*If non-nil, is file name to use for explicitly requested inferior shell.")
        !            44: 
        !            45: ;In loaddefs.el now.
        !            46: ;(defconst shell-prompt-pattern
        !            47: ;  "^[^#$%>]*[#$%>] *"
        !            48: ;  "*Regexp used by Newline command to match subshell prompts.
        !            49: ;Anything from beginning of line up to the end of what this pattern matches
        !            50: ;is deemed to be prompt, and is not reexecuted.")
        !            51: 
        !            52: (defun shell-mode ()
        !            53:   "Major mode for interacting with an inferior shell.
        !            54: Shell name is same as buffer name, sans the asterisks.
        !            55: Return at end of buffer sends line as input.
        !            56: Return not at end copies rest of line to end and sends it.
        !            57: 
        !            58: The following commands imitate the usual Unix interrupt and
        !            59: editing control characters:
        !            60: \\{shell-mode-map}
        !            61: 
        !            62: Entry to this mode calls the value of shell-mode-hook with no args,
        !            63: if that value is non-nil.
        !            64: 
        !            65: cd, pushd and popd commands given to the shell are watched
        !            66: by Emacs to keep this buffer's default directory
        !            67: the same as the shell's working directory.
        !            68: Variables shell-cd-regexp, shell-pushd-regexp and shell-popd-regexp
        !            69: are used to match these command names.
        !            70: 
        !            71: You can send text to the shell (or its subjobs) from other buffers
        !            72: using the commands process-send-region, process-send-string
        !            73: and lisp-send-defun."
        !            74:   (interactive)
        !            75:   (kill-all-local-variables)
        !            76:   (setq major-mode 'shell-mode)
        !            77:   (setq mode-name "Shell")
        !            78:   (setq mode-line-process '(": %s"))
        !            79:   (use-local-map shell-mode-map)
        !            80:   (make-local-variable 'shell-directory-stack)
        !            81:   (setq shell-directory-stack nil)
        !            82:   (make-local-variable 'last-input-start)
        !            83:   (setq last-input-start (make-marker))
        !            84:   (make-local-variable 'last-input-end)
        !            85:   (setq last-input-end (make-marker))
        !            86:   (run-hooks 'shell-mode-hook))
        !            87: 
        !            88: (if shell-mode-map
        !            89:     nil
        !            90:   (setq shell-mode-map (make-sparse-keymap))
        !            91:   (define-key shell-mode-map "\C-m" 'shell-send-input)
        !            92:   (define-key shell-mode-map "\C-c\C-d" 'shell-send-eof)
        !            93:   (define-key shell-mode-map "\C-c\C-u" 'kill-shell-input)
        !            94:   (define-key shell-mode-map "\C-c\C-w" 'backward-kill-word)
        !            95:   (define-key shell-mode-map "\C-c\C-c" 'interrupt-shell-subjob)
        !            96:   (define-key shell-mode-map "\C-c\C-z" 'stop-shell-subjob)
        !            97:   (define-key shell-mode-map "\C-c\C-\\" 'quit-shell-subjob)
        !            98:   (define-key shell-mode-map "\C-c\C-o" 'kill-output-from-shell)
        !            99:   (define-key shell-mode-map "\C-c\C-r" 'show-output-from-shell)
        !           100:   (define-key shell-mode-map "\C-c\C-y" 'copy-last-shell-input))
        !           101: 
        !           102: (defvar explicit-csh-args
        !           103:   (if (eq system-type 'hpux)
        !           104:       ;; -T persuades HP's csh not to think it is smarter
        !           105:       ;; than us about what terminal modes to use.
        !           106:       '("-i" "-T")
        !           107:     '("-i"))
        !           108:   "Args passed to inferior shell by M-x shell, if the shell is csh.
        !           109: Value is a list of strings, which may be nil.")
        !           110: 
        !           111: (defun shell ()
        !           112:   "Run an inferior shell, with I/O through buffer *shell*.
        !           113: If buffer exists but shell process is not running, make new shell.
        !           114: Program used comes from variable explicit-shell-file-name,
        !           115:  or (if that is nil) from the ESHELL environment variable,
        !           116:  or else from SHELL if there is no ESHELL.
        !           117: If a file ~/.emacs_SHELLNAME exists, it is given as initial input
        !           118:  (Note that this may lose due to a timing error if the shell
        !           119:   discards input when it starts up.)
        !           120: The buffer is put in shell-mode, giving commands for sending input
        !           121: and controlling the subjobs of the shell.  See shell-mode.
        !           122: See also variable shell-prompt-pattern.
        !           123: 
        !           124: The shell file name (sans directories) is used to make a symbol name
        !           125: such as `explicit-csh-arguments'.  If that symbol is a variable,
        !           126: its value is used as a list of arguments when invoking the shell.
        !           127: Otherwise, one argument `-i' is passed to the shell.
        !           128: 
        !           129: Note that many people's .cshrc files unconditionally clear the prompt.
        !           130: If yours does, you will probably want to change it."
        !           131:   (interactive)
        !           132:   (let* ((prog (or explicit-shell-file-name
        !           133:                   (getenv "ESHELL")
        !           134:                   (getenv "SHELL")
        !           135:                   "/bin/sh"))               
        !           136:         (name (file-name-nondirectory prog)))
        !           137:     (switch-to-buffer
        !           138:      (apply 'make-shell "shell" prog
        !           139:            (if (file-exists-p (concat "~/.emacs_" name))
        !           140:                (concat "~/.emacs_" name))
        !           141:            (let ((symbol (intern-soft (concat "explicit-" name "-args"))))
        !           142:              (if (and symbol (boundp symbol))
        !           143:                  (symbol-value symbol)
        !           144:                '("-i")))))))
        !           145: 
        !           146: (defun make-shell (name program &optional startfile &rest switches)
        !           147:   (let ((buffer (get-buffer-create (concat "*" name "*")))
        !           148:        proc status size)
        !           149:     (setq proc (get-buffer-process buffer))
        !           150:     (if proc (setq status (process-status proc)))
        !           151:     (save-excursion
        !           152:       (set-buffer buffer)
        !           153:       ;;    (setq size (buffer-size))
        !           154:       (if (memq status '(run stop))
        !           155:          nil
        !           156:        (if proc (delete-process proc))
        !           157:        (setq proc (apply 'start-process name buffer
        !           158:                          (concat exec-directory "env")
        !           159:                          (format "TERMCAP=emacs:co#%d:tc=unknown:"
        !           160:                                  (screen-width))
        !           161:                          "TERM=emacs"
        !           162:                          "EMACS=t"
        !           163:                          "-"
        !           164:                          (or program explicit-shell-file-name
        !           165:                              (getenv "ESHELL")
        !           166:                              (getenv "SHELL")
        !           167:                              "/bin/sh")
        !           168:                          switches))
        !           169:        (cond (startfile
        !           170:               ;;This is guaranteed to wait long enough
        !           171:               ;;but has bad results if the shell does not prompt at all
        !           172:               ;;            (while (= size (buffer-size))
        !           173:               ;;              (sleep-for 1))
        !           174:               ;;I hope 1 second is enough!
        !           175:               (sleep-for 1)
        !           176:               (goto-char (point-max))
        !           177:               (insert-file-contents startfile)
        !           178:               (setq startfile (buffer-substring (point) (point-max)))
        !           179:               (delete-region (point) (point-max))
        !           180:               (process-send-string proc startfile)))
        !           181:        (setq name (process-name proc)))
        !           182:       (goto-char (point-max))
        !           183:       (set-marker (process-mark proc) (point))
        !           184:       (or (eq major-mode 'shell-mode) (shell-mode)))
        !           185:     buffer))
        !           186: 
        !           187: (defvar shell-set-directory-error-hook 'ignore
        !           188:   "Function called with no arguments when shell-send-input
        !           189: recognizes a change-directory command but gets an error
        !           190: trying to change Emacs's default directory.")
        !           191: 
        !           192: (defun shell-send-input ()
        !           193:   "Send input to subshell.
        !           194: At end of buffer, sends all text after last output
        !           195:  as input to the subshell, including a newline inserted at the end.
        !           196: When not at end, copies current line to the end of the buffer and sends it,
        !           197: after first attempting to discard any prompt at the beginning of the line
        !           198: by matching the regexp that is the value of shell-prompt-pattern if possible.
        !           199: This regexp should start with \"^\"."
        !           200:   (interactive)
        !           201:   (or (get-buffer-process (current-buffer))
        !           202:       (error "Current buffer has no process"))
        !           203:   (end-of-line)
        !           204:   (if (eobp)
        !           205:       (progn
        !           206:        (move-marker last-input-start
        !           207:                     (process-mark (get-buffer-process (current-buffer))))
        !           208:        (insert ?\n)
        !           209:        (move-marker last-input-end (point)))
        !           210:     (beginning-of-line)
        !           211:     ;; Exclude the shell prompt, if any.
        !           212:     (re-search-forward shell-prompt-pattern
        !           213:                       (save-excursion (end-of-line) (point))
        !           214:                       t)
        !           215:     (let ((copy (buffer-substring (point)
        !           216:                                  (progn (forward-line 1) (point)))))
        !           217:       (goto-char (point-max))
        !           218:       (move-marker last-input-start (point))
        !           219:       (insert copy)
        !           220:       (move-marker last-input-end (point))))
        !           221:   ;; Even if we get an error trying to hack the working directory,
        !           222:   ;; still send the input to the subshell.
        !           223:   (condition-case ()
        !           224:       (save-excursion
        !           225:        (goto-char last-input-start)
        !           226:        (shell-set-directory))
        !           227:     (error (funcall shell-set-directory-error-hook)))
        !           228:   (let ((process (get-buffer-process (current-buffer))))
        !           229:     (process-send-region process last-input-start last-input-end)
        !           230:     (set-marker (process-mark process) (point))))
        !           231: 
        !           232: ;;;  If this code changes (shell-send-input and shell-set-directory),
        !           233: ;;;  the customization tutorial in
        !           234: ;;;  info/customizing-tutorial must also change, since it explains this
        !           235: ;;;  code.  Please let [email protected] know of any changes you
        !           236: ;;;  make. 
        !           237: 
        !           238: (defun shell-set-directory ()
        !           239:   (cond ((and (looking-at shell-popd-regexp)
        !           240:              (memq (char-after (match-end 0)) '(?\; ?\n)))
        !           241:         (if shell-directory-stack
        !           242:             (progn
        !           243:               (cd (car shell-directory-stack))
        !           244:               (setq shell-directory-stack (cdr shell-directory-stack)))))
        !           245:        ((looking-at shell-pushd-regexp)
        !           246:         (cond ((memq (char-after (match-end 0)) '(?\; ?\n))
        !           247:                (if shell-directory-stack
        !           248:                    (let ((old default-directory))
        !           249:                      (cd (car shell-directory-stack))
        !           250:                      (setq shell-directory-stack
        !           251:                            (cons old (cdr shell-directory-stack))))))
        !           252:               ((memq (char-after (match-end 0)) '(?\  ?\t))
        !           253:                (let (dir)
        !           254:                  (skip-chars-forward "^ ")
        !           255:                  (skip-chars-forward " \t")
        !           256:                  (if (file-directory-p
        !           257:                        (setq dir
        !           258:                              (expand-file-name
        !           259:                                (substitute-in-file-name
        !           260:                                  (buffer-substring
        !           261:                                    (point)
        !           262:                                    (progn
        !           263:                                      (skip-chars-forward "^\n \t;")
        !           264:                                      (point)))))))
        !           265:                      (progn
        !           266:                        (setq shell-directory-stack
        !           267:                              (cons default-directory shell-directory-stack))
        !           268:                        (cd dir)))))))
        !           269:        ((looking-at shell-cd-regexp)
        !           270:         (cond ((memq (char-after (match-end 0)) '(?\; ?\n))
        !           271:                (cd (getenv "HOME")))
        !           272:               ((memq (char-after (match-end 0)) '(?\  ?\t))
        !           273:                (let (dir)
        !           274:                  (forward-char 3)
        !           275:                  (skip-chars-forward " \t")
        !           276:                  (if (file-directory-p
        !           277:                        (setq dir
        !           278:                              (expand-file-name
        !           279:                                (substitute-in-file-name
        !           280:                                  (buffer-substring
        !           281:                                    (point)
        !           282:                                    (progn
        !           283:                                      (skip-chars-forward "^\n \t;")
        !           284:                                      (point)))))))
        !           285:                      (cd dir))))))))
        !           286:   
        !           287: (defun shell-send-eof ()
        !           288:   "Send eof to subshell (or to the program running under it)."
        !           289:   (interactive)
        !           290:   (process-send-eof))
        !           291: 
        !           292: (defun kill-output-from-shell ()
        !           293:   "Kill all output from shell since last input."
        !           294:   (interactive)
        !           295:   (goto-char (point-max))
        !           296:   (beginning-of-line)
        !           297:   (kill-region last-input-end (point))
        !           298:   (insert "*** output flushed ***\n")
        !           299:   (goto-char (point-max)))
        !           300: 
        !           301: (defun show-output-from-shell ()
        !           302:   "Display start of this batch of shell output at top of window.
        !           303: Also put cursor there."
        !           304:   (interactive)
        !           305:   (set-window-start (selected-window) last-input-end)
        !           306:   (goto-char last-input-end))
        !           307: 
        !           308: (defun copy-last-shell-input ()
        !           309:   "Copy previous shell input, sans newline, and insert before point."
        !           310:   (interactive)
        !           311:   (insert (buffer-substring last-input-end last-input-start))
        !           312:   (delete-char -1))
        !           313: 
        !           314: (defun interrupt-shell-subjob ()
        !           315:   "Interrupt this shell's current subjob."
        !           316:   (interactive)
        !           317:   (interrupt-process nil t))
        !           318: 
        !           319: (defun kill-shell-subjob ()
        !           320:   "Send kill signal to this shell's current subjob."
        !           321:   (interactive)
        !           322:   (kill-process nil t))
        !           323: 
        !           324: (defun quit-shell-subjob ()
        !           325:   "Send quit signal to this shell's current subjob."
        !           326:   (interactive)
        !           327:   (quit-process nil t))
        !           328: 
        !           329: (defun stop-shell-subjob ()
        !           330:   "Stop this shell's current subjob."
        !           331:   (interactive)
        !           332:   (stop-process nil t))
        !           333: 
        !           334: (defun kill-shell-input ()
        !           335:   "Kill all text since last stuff output by the shell or its subjobs."
        !           336:   (interactive)
        !           337:   (kill-region (process-mark (get-buffer-process (current-buffer)))
        !           338:               (point)))
        !           339: 
        !           340: (defvar inferior-lisp-mode-map nil)
        !           341: (if inferior-lisp-mode-map
        !           342:     nil
        !           343:   (setq inferior-lisp-mode-map (copy-alist shell-mode-map))
        !           344:   (lisp-mode-commands inferior-lisp-mode-map)
        !           345:   (define-key inferior-lisp-mode-map "\e\C-x" 'lisp-send-defun))
        !           346: 
        !           347: (defvar inferior-lisp-program "lisp"
        !           348:   "*Program name for invoking an inferior Lisp with `run-lisp'.")
        !           349: 
        !           350: (defvar inferior-lisp-load-command "(load \"%s\")\n"
        !           351:   "*Format-string for building a Lisp expression to load a file.
        !           352: This format string should use %s to substitute a file name
        !           353: and should result in a Lisp expression that will command the inferior Lisp
        !           354: to load that file.  The default works acceptably on most Lisps.
        !           355: The string \"(progn (load \\\"%s\\\" :verbose nil :print t) (values))\\\n\"
        !           356: produces cosmetically superior output for this application,
        !           357: but it works only in Common Lisp.")
        !           358: 
        !           359: (defvar inferior-lisp-prompt "^.*>:? *$"
        !           360:   "*Regexp to recognize prompts from the inferior Lisp.
        !           361: Default is right for Franz Lisp and kcl.")
        !           362: 
        !           363: (defun inferior-lisp-mode ()
        !           364:   "Major mode for interacting with an inferior Lisp process.
        !           365: Runs a Lisp interpreter as a subprocess of Emacs, with Lisp I/O
        !           366: through an Emacs buffer.  Variable inferior-lisp-program controls
        !           367: which Lisp interpreter is run.  Variables inferior-lisp-prompt
        !           368: and inferior-lisp-load-command can customize this mode for different
        !           369: Lisp interpreters.
        !           370: 
        !           371: Commands:
        !           372: DELETE converts tabs to spaces as it moves back.
        !           373: TAB indents for Lisp; with argument, shifts rest
        !           374:  of expression rigidly with the current line.
        !           375: Meta-Control-Q does TAB on each line starting within following expression.
        !           376: Paragraphs are separated only by blank lines.  Semicolons start comments.
        !           377: 
        !           378: Return at end of buffer sends line as input.
        !           379: Return not at end copies rest of line to end and sends it.
        !           380: 
        !           381: The following commands imitate the usual Unix interrupt and
        !           382: editing control characters:
        !           383: \\{shell-mode-map}
        !           384: 
        !           385: Entry to this mode calls the value of lisp-mode-hook with no arguments,
        !           386: if that value is non-nil.  Likewise with the value of shell-mode-hook.
        !           387: lisp-mode-hook is called after shell-mode-hook.
        !           388: 
        !           389: You can send text to the inferior Lisp from other buffers
        !           390: using the commands process-send-region, process-send-string
        !           391: and \\[lisp-send-defun]."
        !           392:   (interactive)
        !           393:   (kill-all-local-variables)
        !           394:   (setq major-mode 'inferior-lisp-mode)
        !           395:   (setq mode-name "Inferior Lisp")
        !           396:   (setq mode-line-process '(": %s"))
        !           397:   (lisp-mode-variables t)
        !           398:   (use-local-map inferior-lisp-mode-map)
        !           399:   (make-local-variable 'last-input-start)
        !           400:   (setq last-input-start (make-marker))
        !           401:   (make-local-variable 'last-input-end)
        !           402:   (setq last-input-end (make-marker))
        !           403:   (run-hooks 'shell-mode-hook 'lisp-mode-hook))
        !           404: 
        !           405: (defun run-lisp ()
        !           406:   "Run an inferior Lisp process, input and output via buffer *lisp*."
        !           407:   (interactive)
        !           408:   (switch-to-buffer (make-shell "lisp" inferior-lisp-program))
        !           409:   (inferior-lisp-mode))
        !           410: 
        !           411: (defun lisp-send-defun (display-flag)
        !           412:   "Send the current defun to the Lisp process made by M-x run-lisp.
        !           413: With argument, force redisplay and scrolling of the *lisp* buffer.
        !           414: Variable `inferior-lisp-load-command' controls formatting of
        !           415: the `load' form that is set to the Lisp process."
        !           416:   (interactive "P")
        !           417:   (or (get-process "lisp")
        !           418:       (error "No current lisp process"))
        !           419:   (save-excursion
        !           420:    (end-of-defun)
        !           421:    (let ((end (point))
        !           422:         (filename (format "/tmp/emlisp%d" (process-id (get-process "lisp")))))
        !           423:      (beginning-of-defun)
        !           424:      (write-region (point) end filename nil 'nomessage)
        !           425:      (process-send-string "lisp" (format inferior-lisp-load-command filename)))
        !           426:    (if display-flag
        !           427:        (let* ((process (get-process "lisp"))
        !           428:              (buffer (process-buffer process))
        !           429:              (w (or (get-buffer-window buffer) (display-buffer buffer)))
        !           430:              (height (window-height w))
        !           431:              (end))
        !           432:         (save-excursion
        !           433:           (set-buffer buffer)
        !           434:           (setq end (point-max))
        !           435:           (while (progn
        !           436:                    (accept-process-output process)
        !           437:                    (goto-char (point-max))
        !           438:                    (beginning-of-line)
        !           439:                    (or (= (point-max) end)
        !           440:                        (not (looking-at inferior-lisp-prompt)))))
        !           441:           (setq end (point-max))
        !           442:           (vertical-motion (- 4 height))
        !           443:           (set-window-start w (point)))
        !           444:         (set-window-point w end)))))
        !           445: 
        !           446: (defun lisp-send-defun-and-go ()
        !           447:   "Send the current defun to the inferior Lisp, and switch to *lisp* buffer."
        !           448:   (interactive)
        !           449:   (lisp-send-defun nil)
        !           450:   (switch-to-buffer "*lisp*"))

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