(require 'ring)
(defgroup comint nil
"General command interpreter in a window stuff."
:group 'processes)
(defgroup comint-completion nil
"Completion facilities in comint"
:group 'comint)
(defgroup comint-source nil
"Source finding facilities in comint"
:prefix "comint-"
:group 'comint)
(defvar comint-prompt-regexp "^"
"Regexp to recognise prompts in the inferior process.
Defaults to \"^\", the null string at BOL.
Good choices:
Canonical Lisp: \"^[^> \\n]*>+:? *\" (Lucid, franz, kcl, T, cscheme, oaklisp)
Lucid Common Lisp: \"^\\\\(>\\\\|\\\\(->\\\\)+\\\\) *\"
franz: \"^\\\\(->\\\\|<[0-9]*>:\\\\) *\"
kcl: \"^>+ *\"
shell: \"^[^#$%>\\n]*[#$%>] *\"
T: \"^>+ *\"
This is a good thing to set in mode hooks.")
(defvar comint-delimiter-argument-list ()
"List of characters to recognise as separate arguments in input.
Strings comprising a character in this list will separate the arguments
surrounding them, and also be regarded as arguments in their own right (unlike
whitespace). See `comint-arguments'.
Defaults to the empty list.
For shells, a good value is (?\\| ?& ?< ?> ?\\( ?\\) ?;).
This is a good thing to set in mode hooks.")
(defcustom comint-input-autoexpand nil
"*If non-nil, expand input command history references on completion.
This mirrors the optional behavior of tcsh (its autoexpand and histlit).
If the value is `input', then the expansion is seen on input.
If the value is `history', then the expansion is only when inserting
into the buffer's input ring. See also `comint-magic-space' and
`comint-dynamic-complete'.
This variable is buffer-local."
:type '(choice (const :tag "off" nil)
(const input)
(const history)
(other :tag "on" t))
:group 'comint)
(defcustom comint-input-ignoredups nil
"*If non-nil, don't add input matching the last on the input ring.
This mirrors the optional behavior of bash.
This variable is buffer-local."
:type 'boolean
:group 'comint)
(defcustom comint-input-ring-file-name nil
"*If non-nil, name of the file to read/write input history.
See also `comint-read-input-ring' and `comint-write-input-ring'.
This variable is buffer-local, and is a good thing to set in mode hooks."
:type 'boolean
:group 'comint)
(defcustom comint-scroll-to-bottom-on-input nil
"*Controls whether input to interpreter causes window to scroll.
If nil, then do not scroll. If t or `all', scroll all windows showing buffer.
If `this', scroll only the selected window.
The default is nil.
See `comint-preinput-scroll-to-bottom'. This variable is buffer-local."
:type '(choice (const :tag "off" nil)
(const t)
(const all)
(const this))
:group 'comint)
(defcustom comint-scroll-to-bottom-on-output nil
"*Controls whether interpreter output causes window to scroll.
If nil, then do not scroll. If t or `all', scroll all windows showing buffer.
If `this', scroll only the selected window.
If `others', scroll only those that are not the selected window.
The default is nil.
See variable `comint-scroll-show-maximum-output' and function
`comint-postoutput-scroll-to-bottom'. This variable is buffer-local."
:type '(choice (const :tag "off" nil)
(const t)
(const all)
(const this)
(const others))
:group 'comint)
(defcustom comint-scroll-show-maximum-output nil
"*Controls how interpreter output causes window to scroll.
If non-nil, then show the maximum output when the window is scrolled.
See variable `comint-scroll-to-bottom-on-output' and function
`comint-postoutput-scroll-to-bottom'. This variable is buffer-local."
:type 'boolean
:group 'comint)
(defcustom comint-buffer-maximum-size 1024
"*The maximum size in lines for comint buffers.
Comint buffers are truncated from the top to be no greater than this number, if
the function `comint-truncate-buffer' is on `comint-output-filter-functions'."
:type 'integer
:group 'comint)
(defvar comint-input-ring-size 32
"Size of input history ring.")
(defcustom comint-process-echoes nil
"*If non-nil, assume that the subprocess echoes any input.
If so, delete one copy of the input so that only one copy eventually
appears in the buffer.
This variable is buffer-local."
:type 'boolean
:group 'comint)
(defcustom comint-password-prompt-regexp
"\\(\\([Oo]ld \\|[Nn]ew \\|Kerberos \\|'s \\|login \\|^\\)\
[Pp]assword\\( (again)\\)?\\|pass phrase\\|Enter passphrase\\)\
\\( for [^@ \t\n]+@[^@ \t\n]+\\)?:\\s *\\'"
"*Regexp matching prompts for passwords in the inferior process.
This is used by `comint-watch-for-password-prompt'."
:type 'regexp
:group 'comint)
(defvar comint-get-old-input (function comint-get-old-input-default)
"Function that returns old text in comint mode.
This function is called when return is typed while the point is in old text.
It returns the text to be submitted as process input. The default is
`comint-get-old-input-default', which grabs the current line, and strips off
leading text matching `comint-prompt-regexp'.")
(defvar comint-dynamic-complete-functions
'(comint-replace-by-expanded-history comint-dynamic-complete-filename)
"List of functions called to perform completion.
Functions should return non-nil if completion was performed.
See also `comint-dynamic-complete'.
This is a good thing to set in mode hooks.")
(defvar comint-input-filter
(function (lambda (str) (not (string-match "\\`\\s *\\'" str))))
"Predicate for filtering additions to input history.
Takes one argument, the input. If non-nil, the input may be saved on the input
history list. Default is to save anything that isn't all whitespace.")
(defvar comint-input-filter-functions '()
"Functions to call before input is sent to the process.
These functions get one argument, a string containing the text to send.
This variable is buffer-local.")
(defvar comint-output-filter-functions '(comint-postoutput-scroll-to-bottom)
"Functions to call after output is inserted into the buffer.
One possible function is `comint-postoutput-scroll-to-bottom'.
These functions get one argument, a string containing the text as originally
inserted. Note that this might not be the same as the buffer contents between
`comint-last-output-start' and the buffer's `process-mark', if other filter
functions have already modified the buffer.
See also `comint-preoutput-filter-functions'.
This variable is buffer-local.")
(defvar comint-input-sender (function comint-simple-send)
"Function to actually send to PROCESS the STRING submitted by user.
Usually this is just `comint-simple-send', but if your mode needs to
massage the input string, put a different function here.
`comint-simple-send' just sends the string plus a newline.
This is called from the user command `comint-send-input'.")
(defcustom comint-eol-on-send t
"*Non-nil means go to the end of the line before sending input.
See `comint-send-input'."
:type 'boolean
:group 'comint)
(defcustom comint-mode-hook '()
"Called upon entry into comint-mode
This is run before the process is cranked up."
:type 'hook
:group 'comint)
(defcustom comint-exec-hook '()
"Called each time a process is exec'd by `comint-exec'.
This is called after the process is cranked up. It is useful for things that
must be done each time a process is executed in a comint mode buffer (e.g.,
`(process-kill-without-query)'). In contrast, the `comint-mode-hook' is only
executed once when the buffer is created."
:type 'hook
:group 'comint)
(defvar comint-mode-map nil)
(defvar comint-ptyp t
"Non-nil if communications via pty; false if by pipe. Buffer local.
This is to work around a bug in Emacs process signaling.")
(defvar comint-input-ring nil)
(defvar comint-last-input-start)
(defvar comint-last-input-end)
(defvar comint-last-output-start)
(defvar comint-input-ring-index nil
"Index of last matched history element.")
(defvar comint-matching-input-from-input-string ""
"Input previously used to match input history.")
(defvar comint-save-input-ring-index
"Last input ring index which you copied.
This is to support the command \\[comint-get-next-from-history].")
(defvar comint-accum-marker nil
"Non-nil if you are accumulating input lines to send as input together.
The command \\[comint-accumulate] sets this.")
(put 'comint-replace-by-expanded-history 'menu-enable 'comint-input-autoexpand)
(put 'comint-input-ring 'permanent-local t)
(put 'comint-input-ring-index 'permanent-local t)
(put 'comint-save-input-ring-index 'permanent-local t)
(put 'comint-input-autoexpand 'permanent-local t)
(put 'comint-input-filter-functions 'permanent-local t)
(put 'comint-output-filter-functions 'permanent-local t)
(put 'comint-preoutput-filter-functions 'permanent-local t)
(put 'comint-scroll-to-bottom-on-input 'permanent-local t)
(put 'comint-scroll-to-bottom-on-output 'permanent-local t)
(put 'comint-scroll-show-maximum-output 'permanent-local t)
(put 'comint-ptyp 'permanent-local t)
(put 'comint-mode 'mode-class 'special)
(defun comint-mode ()
"Major mode for interacting with an inferior interpreter.
Interpreter name is same as buffer name, sans the asterisks.
Return at end of buffer sends line as input.
Return not at end copies rest of line to end and sends it.
Setting variable `comint-eol-on-send' means jump to the end of the line
before submitting new input.
This mode is customised to create major modes such as Inferior Lisp
mode, Shell mode, etc. This can be done by setting the hooks
`comint-input-filter-functions', `comint-input-filter', `comint-input-sender'
and `comint-get-old-input' to appropriate functions, and the variable
`comint-prompt-regexp' to the appropriate regular expression.
An input history is maintained of size `comint-input-ring-size', and
can be accessed with the commands \\[comint-next-input], \\[comint-previous-input], and \\[comint-dynamic-list-input-ring].
Input ring history expansion can be achieved with the commands
\\[comint-replace-by-expanded-history] or \\[comint-magic-space].
Input ring expansion is controlled by the variable `comint-input-autoexpand',
and addition is controlled by the variable `comint-input-ignoredups'.
Commands with no default key bindings include `send-invisible',
`comint-dynamic-complete', `comint-dynamic-list-filename-completions', and
`comint-magic-space'.
Input to, and output from, the subprocess can cause the window to scroll to
the end of the buffer. See variables `comint-output-filter-functions',
`comint-preoutput-filter-functions', `comint-scroll-to-bottom-on-input',
and `comint-scroll-to-bottom-on-output'.
If you accidentally suspend your process, use \\[comint-continue-subjob]
to continue it.
\\{comint-mode-map}
Entry to this mode runs the hooks on `comint-mode-hook'."
(interactive)
(kill-all-local-variables)
(setq major-mode 'comint-mode)
(setq mode-name "Comint")
(setq mode-line-process '(":%s"))
(use-local-map comint-mode-map)
(make-local-variable 'comint-last-input-start)
(setq comint-last-input-start (make-marker))
(set-marker comint-last-input-start (point-min))
(make-local-variable 'comint-last-input-end)
(setq comint-last-input-end (make-marker))
(set-marker comint-last-input-end (point-min))
(make-local-variable 'comint-last-output-start)
(setq comint-last-output-start (make-marker))
(make-local-variable 'comint-prompt-regexp) (make-local-variable 'comint-input-ring-size) (make-local-variable 'comint-input-ring)
(make-local-variable 'comint-input-ring-file-name)
(or (and (boundp 'comint-input-ring) comint-input-ring)
(setq comint-input-ring (make-ring comint-input-ring-size)))
(make-local-variable 'comint-input-ring-index)
(make-local-variable 'comint-save-input-ring-index)
(or (and (boundp 'comint-input-ring-index) comint-input-ring-index)
(setq comint-input-ring-index nil))
(or (and (boundp 'comint-save-input-ring-index) comint-save-input-ring-index)
(setq comint-save-input-ring-index nil))
(make-local-variable 'comint-matching-input-from-input-string)
(make-local-variable 'comint-input-autoexpand)
(make-local-variable 'comint-input-ignoredups)
(make-local-variable 'comint-delimiter-argument-list)
(make-local-hook 'comint-dynamic-complete-functions)
(make-local-variable 'comint-completion-fignore)
(make-local-variable 'comint-get-old-input)
(make-local-hook 'comint-input-filter-functions)
(make-local-variable 'comint-input-filter)
(make-local-variable 'comint-input-sender)
(make-local-variable 'comint-eol-on-send)
(make-local-variable 'comint-scroll-to-bottom-on-input)
(make-local-variable 'comint-scroll-to-bottom-on-output)
(make-local-variable 'comint-scroll-show-maximum-output)
(make-local-hook 'pre-command-hook)
(add-hook 'pre-command-hook 'comint-preinput-scroll-to-bottom t t)
(make-local-hook 'comint-output-filter-functions)
(make-local-hook 'comint-exec-hook)
(make-local-variable 'comint-ptyp)
(make-local-variable 'comint-process-echoes)
(make-local-variable 'comint-file-name-chars)
(make-local-variable 'comint-file-name-quote-list)
(make-local-variable 'comint-accum-marker)
(setq comint-accum-marker (make-marker))
(set-marker comint-accum-marker nil)
(run-hooks 'comint-mode-hook))
(if comint-mode-map
nil
(setq comint-mode-map (make-sparse-keymap))
(define-key comint-mode-map "\ep" 'comint-previous-input)
(define-key comint-mode-map "\en" 'comint-next-input)
(define-key comint-mode-map [C-up] 'comint-previous-input)
(define-key comint-mode-map [C-down] 'comint-next-input)
(define-key comint-mode-map "\er" 'comint-previous-matching-input)
(define-key comint-mode-map "\es" 'comint-next-matching-input)
(define-key comint-mode-map [?\C-c ?\M-r] 'comint-previous-matching-input-from-input)
(define-key comint-mode-map [?\C-c ?\M-s] 'comint-next-matching-input-from-input)
(define-key comint-mode-map "\e\C-l" 'comint-show-output)
(define-key comint-mode-map "\C-m" 'comint-send-input)
(define-key comint-mode-map "\C-d" 'comint-delchar-or-maybe-eof)
(define-key comint-mode-map "\C-c " 'comint-accumulate)
(define-key comint-mode-map "\C-c\C-x" 'comint-get-next-from-history)
(define-key comint-mode-map "\C-c\C-a" 'comint-bol-or-process-mark)
(define-key comint-mode-map "\C-c\C-u" 'comint-kill-input)
(define-key comint-mode-map "\C-c\C-w" 'backward-kill-word)
(define-key comint-mode-map "\C-c\C-c" 'comint-interrupt-subjob)
(define-key comint-mode-map "\C-c\C-z" 'comint-stop-subjob)
(define-key comint-mode-map "\C-c\C-\\" 'comint-quit-subjob)
(define-key comint-mode-map "\C-c\C-m" 'comint-copy-old-input)
(define-key comint-mode-map "\C-c\C-o" 'comint-kill-output)
(define-key comint-mode-map "\C-c\C-r" 'comint-show-output)
(define-key comint-mode-map "\C-c\C-e" 'comint-show-maximum-output)
(define-key comint-mode-map "\C-c\C-l" 'comint-dynamic-list-input-ring)
(define-key comint-mode-map "\C-c\C-n" 'comint-next-prompt)
(define-key comint-mode-map "\C-c\C-p" 'comint-previous-prompt)
(define-key comint-mode-map "\C-c\C-d" 'comint-send-eof)
(define-key comint-mode-map [menu-bar completion]
(cons "Complete" (make-sparse-keymap "Complete")))
(define-key comint-mode-map [menu-bar completion complete-expand]
'("Expand File Name" . comint-replace-by-expanded-filename))
(define-key comint-mode-map [menu-bar completion complete-listing]
'("File Completion Listing" . comint-dynamic-list-filename-completions))
(define-key comint-mode-map [menu-bar completion complete-file]
'("Complete File Name" . comint-dynamic-complete-filename))
(define-key comint-mode-map [menu-bar completion complete]
'("Complete Before Point" . comint-dynamic-complete))
(define-key comint-mode-map [menu-bar inout]
(cons "In/Out" (make-sparse-keymap "In/Out")))
(define-key comint-mode-map [menu-bar inout kill-output]
'("Kill Current Output Group" . comint-kill-output))
(define-key comint-mode-map [menu-bar inout next-prompt]
'("Forward Output Group" . comint-next-prompt))
(define-key comint-mode-map [menu-bar inout previous-prompt]
'("Backward Output Group" . comint-previous-prompt))
(define-key comint-mode-map [menu-bar inout show-maximum-output]
'("Show Maximum Output" . comint-show-maximum-output))
(define-key comint-mode-map [menu-bar inout show-output]
'("Show Current Output Group" . comint-show-output))
(define-key comint-mode-map [menu-bar inout kill-input]
'("Kill Current Input" . comint-kill-input))
(define-key comint-mode-map [menu-bar inout copy-input]
'("Copy Old Input" . comint-copy-old-input))
(define-key comint-mode-map [menu-bar inout forward-matching-history]
'("Forward Matching Input..." . comint-forward-matching-input))
(define-key comint-mode-map [menu-bar inout backward-matching-history]
'("Backward Matching Input..." . comint-backward-matching-input))
(define-key comint-mode-map [menu-bar inout next-matching-history]
'("Next Matching Input..." . comint-next-matching-input))
(define-key comint-mode-map [menu-bar inout previous-matching-history]
'("Previous Matching Input..." . comint-previous-matching-input))
(define-key comint-mode-map [menu-bar inout next-matching-history-from-input]
'("Next Matching Current Input" . comint-next-matching-input-from-input))
(define-key comint-mode-map [menu-bar inout previous-matching-history-from-input]
'("Previous Matching Current Input" . comint-previous-matching-input-from-input))
(define-key comint-mode-map [menu-bar inout next-history]
'("Next Input" . comint-next-input))
(define-key comint-mode-map [menu-bar inout previous-history]
'("Previous Input" . comint-previous-input))
(define-key comint-mode-map [menu-bar inout list-history]
'("List Input History" . comint-dynamic-list-input-ring))
(define-key comint-mode-map [menu-bar inout expand-history]
'("Expand History Before Point" . comint-replace-by-expanded-history))
(define-key comint-mode-map [menu-bar signals]
(cons "Signals" (make-sparse-keymap "Signals")))
(define-key comint-mode-map [menu-bar signals eof]
'("EOF" . comint-send-eof))
(define-key comint-mode-map [menu-bar signals kill]
'("KILL" . comint-kill-subjob))
(define-key comint-mode-map [menu-bar signals quit]
'("QUIT" . comint-quit-subjob))
(define-key comint-mode-map [menu-bar signals cont]
'("CONT" . comint-continue-subjob))
(define-key comint-mode-map [menu-bar signals stop]
'("STOP" . comint-stop-subjob))
(define-key comint-mode-map [menu-bar signals break]
'("BREAK" . comint-interrupt-subjob))
(setq menu-bar-final-items (append '(completion inout signals)
menu-bar-final-items))
)
(defun comint-check-proc (buffer)
"Return t if there is a living process associated w/buffer BUFFER.
Living means the status is `open', `run', or `stop'.
BUFFER can be either a buffer or the name of one."
(let ((proc (get-buffer-process buffer)))
(and proc (memq (process-status proc) '(open run stop)))))
(defun make-comint (name program &optional startfile &rest switches)
"Make a comint process NAME in a buffer, running PROGRAM.
The name of the buffer is made by surrounding NAME with `*'s.
PROGRAM should be either a string denoting an executable program to create
via `start-process', or a cons pair of the form (HOST . SERVICE) denoting a TCP
connection to be opened via `open-network-stream'. If there is already a
running process in that buffer, it is not restarted. Optional third arg
STARTFILE is the name of a file to send the contents of to the process.
If PROGRAM is a string, any more args are arguments to PROGRAM."
(or (fboundp 'start-process)
(error "Multi-processing is not supported for this system"))
(let ((buffer (get-buffer-create (concat "*" name "*"))))
(cond ((not (comint-check-proc buffer))
(save-excursion
(set-buffer buffer)
(comint-mode)) (comint-exec buffer name program startfile switches)))
buffer))
(defun comint-run (program)
"Run PROGRAM in a comint buffer and switch to it.
The buffer name is made by surrounding the file name of PROGRAM with `*'s.
The file name is used to make a symbol name, such as `comint-sh-hook', and any
hooks on this symbol are run in the buffer.
See `make-comint' and `comint-exec'."
(interactive "sRun program: ")
(let ((name (file-name-nondirectory program)))
(switch-to-buffer (make-comint name program))
(run-hooks (intern-soft (concat "comint-" name "-hook")))))
(defun comint-exec (buffer name command startfile switches)
"Start up a process in buffer BUFFER for comint modes.
Blasts any old process running in the buffer. Doesn't set the buffer mode.
You can use this to cheaply run a series of processes in the same comint
buffer. The hook `comint-exec-hook' is run after each exec."
(save-excursion
(set-buffer buffer)
(let ((proc (get-buffer-process buffer))) (if proc (delete-process proc)))
(let ((proc
(if (consp command)
(open-network-stream name buffer (car command) (cdr command))
(comint-exec-1 name buffer command switches))))
(set-process-filter proc 'comint-output-filter)
(make-local-variable 'comint-ptyp)
(setq comint-ptyp process-connection-type) (goto-char (point-max))
(set-marker (process-mark proc) (point))
(cond (startfile
(sleep-for 1)
(goto-char (point-max))
(insert-file-contents startfile)
(setq startfile (buffer-substring (point) (point-max)))
(delete-region (point) (point-max))
(comint-send-string proc startfile)))
(run-hooks 'comint-exec-hook)
buffer)))
(defun comint-exec-1 (name buffer command switches)
(let ((process-environment
(nconc
(if (and (boundp 'system-uses-terminfo) system-uses-terminfo)
(list "TERM=dumb" "TERMCAP="
(format "COLUMNS=%d" (frame-width)))
(list "TERM=emacs"
(format "TERMCAP=emacs:co#%d:tc=unknown:" (frame-width))))
(if (getenv "EMACS") nil (list "EMACS=t"))
process-environment))
(default-directory
(if (file-accessible-directory-p default-directory)
default-directory
(char-to-string directory-sep-char)))
proc decoding encoding changed)
(setq proc (apply 'start-process name buffer command switches))
(let ((coding-systems (process-coding-system proc)))
(setq decoding (car coding-systems)
encoding (cdr coding-systems)))
(if (vectorp (coding-system-eol-type decoding))
(setq decoding (coding-system-change-eol-conversion decoding 'dos)
changed t))
(if (and decoding (not encoding))
(setq encoding (coding-system-change-eol-conversion decoding 'unix)
changed t))
(if changed
(set-process-coding-system proc decoding encoding))
proc))
(defun comint-read-input-ring (&optional silent)
"Sets the buffer's `comint-input-ring' from a history file.
The name of the file is given by the variable `comint-input-ring-file-name'.
The history ring is of size `comint-input-ring-size', regardless of file size.
If `comint-input-ring-file-name' is nil this function does nothing.
If the optional argument SILENT is non-nil, we say nothing about a
failure to read the history file.
This function is useful for major mode commands and mode hooks.
The structure of the history file should be one input command per line,
with the most recent command last.
See also `comint-input-ignoredups' and `comint-write-input-ring'."
(cond ((or (null comint-input-ring-file-name)
(equal comint-input-ring-file-name ""))
nil)
((not (file-readable-p comint-input-ring-file-name))
(or silent
(message "Cannot read history file %s"
comint-input-ring-file-name)))
(t
(let ((history-buf (get-buffer-create " *temp*"))
(file comint-input-ring-file-name)
(count 0)
(ring (make-ring comint-input-ring-size)))
(unwind-protect
(save-excursion
(set-buffer history-buf)
(widen)
(erase-buffer)
(insert-file-contents file)
(goto-char (point-max))
(while (and (< count comint-input-ring-size)
(re-search-backward "^[ \t]*\\([^#\n].*\\)[ \t]*$"
nil t))
(let ((history (buffer-substring (match-beginning 1)
(match-end 1))))
(if (or (null comint-input-ignoredups)
(ring-empty-p ring)
(not (string-equal (ring-ref ring 0) history)))
(ring-insert-at-beginning ring history)))
(setq count (1+ count))))
(kill-buffer history-buf))
(setq comint-input-ring ring
comint-input-ring-index nil)))))
(defun comint-write-input-ring ()
"Writes the buffer's `comint-input-ring' to a history file.
The name of the file is given by the variable `comint-input-ring-file-name'.
The original contents of the file are lost if `comint-input-ring' is not empty.
If `comint-input-ring-file-name' is nil this function does nothing.
Useful within process sentinels.
See also `comint-read-input-ring'."
(cond ((or (null comint-input-ring-file-name)
(equal comint-input-ring-file-name "")
(null comint-input-ring) (ring-empty-p comint-input-ring))
nil)
((not (file-writable-p comint-input-ring-file-name))
(message "Cannot write history file %s" comint-input-ring-file-name))
(t
(let* ((history-buf (get-buffer-create " *Temp Input History*"))
(ring comint-input-ring)
(file comint-input-ring-file-name)
(index (ring-length ring)))
(save-excursion
(set-buffer history-buf)
(erase-buffer)
(while (> index 0)
(setq index (1- index))
(insert (ring-ref ring index) ?\n))
(write-region (buffer-string) nil file nil 'no-message)
(kill-buffer nil))))))
(defun comint-dynamic-list-input-ring ()
"List in help buffer the buffer's input history."
(interactive)
(if (or (not (ring-p comint-input-ring))
(ring-empty-p comint-input-ring))
(message "No history")
(let ((history nil)
(history-buffer " *Input History*")
(index (1- (ring-length comint-input-ring)))
(conf (current-window-configuration)))
(while (>= index 0)
(setq history (cons (ring-ref comint-input-ring index) history)
index (1- index)))
(with-output-to-temp-buffer history-buffer
(display-completion-list history)
(set-buffer history-buffer)
(forward-line 3)
(while (search-backward "completion" nil 'move)
(replace-match "history reference")))
(sit-for 0)
(message "Hit space to flush")
(let ((ch (read-event)))
(if (eq ch ?\ )
(set-window-configuration conf)
(setq unread-command-events (list ch)))))))
(defun comint-regexp-arg (prompt)
(let* ( (last-command last-command)
(regexp (read-from-minibuffer prompt nil nil nil
'minibuffer-history-search-history)))
(list (if (string-equal regexp "")
(setcar minibuffer-history-search-history
(nth 1 minibuffer-history-search-history))
regexp)
(prefix-numeric-value current-prefix-arg))))
(defun comint-search-arg (arg)
(cond ((not (comint-after-pmark-p))
(error "Not at command line"))
((or (null comint-input-ring)
(ring-empty-p comint-input-ring))
(error "Empty input ring"))
((zerop arg)
(setq comint-input-ring-index nil)
1)
(t
arg)))
(defun comint-search-start (arg)
(if comint-input-ring-index
(mod (+ comint-input-ring-index (if (> arg 0) 1 -1))
(ring-length comint-input-ring))
(if (>= arg 0)
0 (1- (ring-length comint-input-ring)))))
(defun comint-previous-input-string (arg)
"Return the string ARG places along the input ring.
Moves relative to `comint-input-ring-index'."
(ring-ref comint-input-ring (if comint-input-ring-index
(mod (+ arg comint-input-ring-index)
(ring-length comint-input-ring))
arg)))
(defun comint-previous-input (arg)
"Cycle backwards through input history."
(interactive "*p")
(comint-previous-matching-input "." arg))
(defun comint-next-input (arg)
"Cycle forwards through input history."
(interactive "*p")
(comint-previous-input (- arg)))
(defun comint-previous-matching-input-string (regexp arg)
"Return the string matching REGEXP ARG places along the input ring.
Moves relative to `comint-input-ring-index'."
(let* ((pos (comint-previous-matching-input-string-position regexp arg)))
(if pos (ring-ref comint-input-ring pos))))
(defun comint-previous-matching-input-string-position (regexp arg &optional start)
"Return the index matching REGEXP ARG places along the input ring.
Moves relative to START, or `comint-input-ring-index'."
(if (or (not (ring-p comint-input-ring))
(ring-empty-p comint-input-ring))
(error "No history"))
(let* ((len (ring-length comint-input-ring))
(motion (if (> arg 0) 1 -1))
(n (mod (- (or start (comint-search-start arg)) motion) len))
(tried-each-ring-item nil)
(prev nil))
(while (and (/= arg 0) (not tried-each-ring-item))
(setq prev n
n (mod (+ n motion) len))
(while (and (< n len) (not tried-each-ring-item)
(not (string-match regexp (ring-ref comint-input-ring n))))
(setq n (mod (+ n motion) len)
tried-each-ring-item (= n prev)))
(setq arg (if (> arg 0) (1- arg) (1+ arg))))
(if (string-match regexp (ring-ref comint-input-ring n))
n)))
(defun comint-previous-matching-input (regexp arg)
"Search backwards through input history for match for REGEXP.
\(Previous history elements are earlier commands.)
With prefix argument N, search for Nth previous match.
If N is negative, find the next or Nth next match."
(interactive (comint-regexp-arg "Previous input matching (regexp): "))
(setq arg (comint-search-arg arg))
(let ((pos (comint-previous-matching-input-string-position regexp arg)))
(if (null pos)
(error "Not found")
(setq comint-input-ring-index pos)
(message "History item: %d" (1+ pos))
(delete-region
(or (marker-position comint-accum-marker)
(process-mark (get-buffer-process (current-buffer))))
(point))
(insert (ring-ref comint-input-ring pos)))))
(defun comint-next-matching-input (regexp arg)
"Search forwards through input history for match for REGEXP.
\(Later history elements are more recent commands.)
With prefix argument N, search for Nth following match.
If N is negative, find the previous or Nth previous match."
(interactive (comint-regexp-arg "Next input matching (regexp): "))
(comint-previous-matching-input regexp (- arg)))
(defun comint-previous-matching-input-from-input (arg)
"Search backwards through input history for match for current input.
\(Previous history elements are earlier commands.)
With prefix argument N, search for Nth previous match.
If N is negative, search forwards for the -Nth following match."
(interactive "p")
(if (not (memq last-command '(comint-previous-matching-input-from-input
comint-next-matching-input-from-input)))
(setq comint-matching-input-from-input-string
(buffer-substring
(or (marker-position comint-accum-marker)
(process-mark (get-buffer-process (current-buffer))))
(point))
comint-input-ring-index nil))
(comint-previous-matching-input
(concat "^" (regexp-quote comint-matching-input-from-input-string))
arg))
(defun comint-next-matching-input-from-input (arg)
"Search forwards through input history for match for current input.
\(Following history elements are more recent commands.)
With prefix argument N, search for Nth following match.
If N is negative, search backwards for the -Nth previous match."
(interactive "p")
(comint-previous-matching-input-from-input (- arg)))
(defun comint-replace-by-expanded-history (&optional silent start)
"Expand input command history references before point.
Expansion is dependent on the value of `comint-input-autoexpand'.
This function depends on the buffer's idea of the input history, which may not
match the command interpreter's idea, assuming it has one.
Assumes history syntax is like typical Un*x shells'. However, since emacs
cannot know the interpreter's idea of input line numbers, assuming it has one,
it cannot expand absolute input line number references.
If the optional argument SILENT is non-nil, never complain
even if history reference seems erroneous.
If the optional argument START is non-nil, that specifies the
start of the text to scan for history references, rather
than the logical beginning of line.
See `comint-magic-space' and `comint-replace-by-expanded-history-before-point'.
Returns t if successful."
(interactive)
(if (and comint-input-autoexpand
(string-match "!\\|^\\^" (funcall comint-get-old-input))
(save-excursion (beginning-of-line)
(looking-at comint-prompt-regexp)))
(let ((previous-modified-tick (buffer-modified-tick)))
(comint-replace-by-expanded-history-before-point silent start)
(/= previous-modified-tick (buffer-modified-tick)))))
(defun comint-replace-by-expanded-history-before-point (silent &optional start)
"Expand directory stack reference before point.
See `comint-replace-by-expanded-history'. Returns t if successful.
If the optional argument START is non-nil, that specifies the
start of the text to scan for history references, rather
than the logical beginning of line."
(save-excursion
(let ((toend (- (save-excursion (end-of-line nil) (point)) (point)))
(start (or start (progn (comint-bol nil) (point)))))
(while (progn
(skip-chars-forward "^!^"
(save-excursion
(end-of-line nil) (- (point) toend)))
(< (point)
(save-excursion
(end-of-line nil) (- (point) toend))))
(setq comint-input-ring-index nil)
(cond ((or (= (preceding-char) ?\\)
(comint-within-quotes start (point)))
(goto-char (1+ (point))))
((looking-at "![0-9]+\\($\\|[^-]\\)")
(goto-char (match-end 0))
(message "Absolute reference cannot be expanded"))
((looking-at "!-\\([0-9]+\\)\\(:?[0-9^$*-]+\\)?")
(let ((number (1- (string-to-number
(buffer-substring (match-beginning 1)
(match-end 1))))))
(if (<= number (ring-length comint-input-ring))
(progn
(replace-match
(comint-args (comint-previous-input-string number)
(match-beginning 2) (match-end 2))
t t)
(setq comint-input-ring-index number)
(message "History item: %d" (1+ number)))
(goto-char (match-end 0))
(message "Relative reference exceeds input history size"))))
((or (looking-at "!!?:?\\([0-9^$*-]+\\)") (looking-at "!!"))
(replace-match
(comint-args (comint-previous-input-string 0)
(match-beginning 1) (match-end 1))
t t)
(message "History item: previous"))
((looking-at
"!\\??\\({\\(.+\\)}\\|\\(\\sw+\\)\\)\\(:?[0-9^$*-]+\\)?")
(let* ((mb1 (match-beginning 1)) (me1 (match-end 1))
(mb2 (match-beginning 2)) (me2 (match-end 2))
(exp (buffer-substring (or mb2 mb1) (or me2 me1)))
(pref (if (save-match-data (looking-at "!\\?")) "" "^"))
(pos (save-match-data
(comint-previous-matching-input-string-position
(concat pref (regexp-quote exp)) 1))))
(if (null pos)
(progn
(goto-char (match-end 0))
(or silent
(progn (message "Not found")
(ding))))
(setq comint-input-ring-index pos)
(replace-match
(comint-args (ring-ref comint-input-ring pos)
(match-beginning 4) (match-end 4))
t t)
(message "History item: %d" (1+ pos)))))
((looking-at "\\^\\([^^]+\\)\\^?\\([^^]*\\)\\^?")
(let ((old (buffer-substring (match-beginning 1) (match-end 1)))
(new (buffer-substring (match-beginning 2) (match-end 2)))
(pos nil))
(replace-match (comint-previous-input-string 0) t t)
(setq pos (point))
(goto-char (match-beginning 0))
(if (not (search-forward old pos t))
(or silent
(error "Not found"))
(replace-match new t t)
(message "History item: substituted"))))
(t
(forward-char 1)))))))
(defun comint-magic-space (arg)
"Expand input history references before point and insert ARG spaces.
A useful command to bind to SPC. See `comint-replace-by-expanded-history'."
(interactive "p")
(comint-replace-by-expanded-history)
(self-insert-command arg))
(defun comint-within-quotes (beg end)
"Return t if the number of quotes between BEG and END is odd.
Quotes are single and double."
(let ((countsq (comint-how-many-region "\\(^\\|[^\\\\]\\)\'" beg end))
(countdq (comint-how-many-region "\\(^\\|[^\\\\]\\)\"" beg end)))
(or (= (mod countsq 2) 1) (= (mod countdq 2) 1))))
(defun comint-how-many-region (regexp beg end)
"Return number of matches for REGEXP from BEG to END."
(let ((count 0))
(save-excursion
(save-match-data
(goto-char beg)
(while (re-search-forward regexp end t)
(setq count (1+ count)))))
count))
(defun comint-args (string begin end)
(save-match-data
(if (null begin)
(comint-arguments string 0 nil)
(let* ((range (buffer-substring
(if (eq (char-after begin) ?:) (1+ begin) begin) end))
(nth (cond ((string-match "^[*^]" range) 1)
((string-match "^-" range) 0)
((string-equal range "$") nil)
(t (string-to-number range))))
(mth (cond ((string-match "[-*$]$" range) nil)
((string-match "-" range)
(string-to-number (substring range (match-end 0))))
(t nth))))
(comint-arguments string nth mth)))))
(defun comint-delim-arg (arg)
(if (null comint-delimiter-argument-list)
(list arg)
(let ((args nil)
(pos 0)
(len (length arg)))
(while (< pos len)
(let ((char (aref arg pos))
(start pos))
(if (memq char comint-delimiter-argument-list)
(while (and (< pos len) (eq (aref arg pos) char))
(setq pos (1+ pos)))
(while (and (< pos len)
(not (memq (aref arg pos)
comint-delimiter-argument-list)))
(setq pos (1+ pos))))
(setq args (cons (substring arg start pos) args))))
args)))
(defun comint-arguments (string nth mth)
"Return from STRING the NTH to MTH arguments.
NTH and/or MTH can be nil, which means the last argument.
Returned arguments are separated by single spaces.
We assume whitespace separates arguments, except within quotes.
Also, a run of one or more of a single character
in `comint-delimiter-argument-list' is a separate argument.
Argument 0 is the command name."
(let* ((first (if (and (eq system-type 'windows-nt)
(w32-shell-dos-semantics))
"[^ \n\t\"'`]+\\|"
"[^ \n\t\"'`\\]+\\|\\\\[\"'`\\]+\\|"))
(argpart (concat first
"\\(\"\\([^\"\\]\\|\\\\.\\)*\"\\|\
'[^']*'\\|\
`[^`]*`\\)"))
(args ()) (pos 0)
(count 0)
beg str value quotes)
(while (and (or (null mth) (<= count mth))
(string-match argpart string pos))
(if (and beg (= pos (match-beginning 0)))
(setq pos (match-end 0)
quotes (or quotes (match-beginning 1)))
(if beg
(setq str (substring string beg pos)
args (if quotes (cons str args)
(nconc (comint-delim-arg str) args))
count (1+ count)))
(setq quotes (match-beginning 1))
(setq beg (match-beginning 0))
(setq pos (match-end 0))))
(if beg
(setq str (substring string beg pos)
args (if quotes (cons str args)
(nconc (comint-delim-arg str) args))
count (1+ count)))
(let ((n (or nth (1- count)))
(m (if mth (1- (- count mth)) 0)))
(mapconcat
(function (lambda (a) a)) (nthcdr n (nreverse (nthcdr m args))) " "))))
(defun comint-send-input ()
"Send input to process.
After the process output mark, sends all text from the process mark to
point as input to the process. Before the process output mark, calls value
of variable `comint-get-old-input' to retrieve old input, copies it to the
process mark, and sends it. If variable `comint-process-echoes' is nil,
a terminal newline is also inserted into the buffer and sent to the process
\(if it is non-nil, all text from the process mark to point is deleted,
since it is assumed the remote process will re-echo it).
Any history reference may be expanded depending on the value of the variable
`comint-input-autoexpand'. The list of function names contained in the value
of `comint-input-filter-functions' is called on the input before sending it.
The input is entered into the input history ring, if the value of variable
`comint-input-filter' returns non-nil when called on the input.
If variable `comint-eol-on-send' is non-nil, then point is moved to the
end of line before sending the input.
The values of `comint-get-old-input', `comint-input-filter-functions', and
`comint-input-filter' are chosen according to the command interpreter running
in the buffer. E.g.,
If the interpreter is the csh,
comint-get-old-input is the default: take the current line, discard any
initial string matching regexp comint-prompt-regexp.
comint-input-filter-functions monitors input for \"cd\", \"pushd\", and
\"popd\" commands. When it sees one, it cd's the buffer.
comint-input-filter is the default: returns t if the input isn't all white
space.
If the comint is Lucid Common Lisp,
comint-get-old-input snarfs the sexp ending at point.
comint-input-filter-functions does nothing.
comint-input-filter returns nil if the input matches input-filter-regexp,
which matches (1) all whitespace (2) :a, :c, etc.
Similarly for Soar, Scheme, etc."
(interactive)
(let ((proc (get-buffer-process (current-buffer))))
(if (not proc) (error "Current buffer has no process")
(let* ((pmark (process-mark proc))
(intxt (if (>= (point) (marker-position pmark))
(progn (if comint-eol-on-send (end-of-line))
(buffer-substring pmark (point)))
(let ((copy (funcall comint-get-old-input)))
(goto-char pmark)
(insert copy)
copy)))
(input (if (not (eq comint-input-autoexpand 'input))
intxt
(comint-replace-by-expanded-history t pmark)
(buffer-substring pmark (point))))
(history (if (not (eq comint-input-autoexpand 'history))
input
(comint-replace-by-expanded-history t pmark)
(let ((copy (buffer-substring pmark (point)))
(start (point)))
(insert input)
(delete-region pmark start)
copy))))
(if comint-process-echoes
(delete-region pmark (point))
(insert-before-markers ?\n))
(if (and (funcall comint-input-filter history)
(or (null comint-input-ignoredups)
(not (ring-p comint-input-ring))
(ring-empty-p comint-input-ring)
(not (string-equal (ring-ref comint-input-ring 0)
history))))
(ring-insert comint-input-ring history))
(run-hook-with-args 'comint-input-filter-functions
(concat input "\n"))
(setq comint-save-input-ring-index comint-input-ring-index)
(setq comint-input-ring-index nil)
(set-marker comint-last-input-start pmark)
(set-marker comint-last-input-end (point))
(set-marker (process-mark proc) (point))
(set-marker comint-accum-marker nil)
(funcall comint-input-sender proc input)
(run-hook-with-args 'comint-output-filter-functions "")))))
(defvar comint-preoutput-filter-functions nil
"Functions to call before output is inserted into the buffer.
These functions get one argument, a string containing the text to be
inserted. They return the string as it should be inserted.
This variable is buffer-local.")
(defun comint-output-filter (process string)
(let ((oprocbuf (process-buffer process)))
(let ((functions comint-preoutput-filter-functions))
(while (and functions string)
(setq string (funcall (car functions) string))
(setq functions (cdr functions))))
(if (and string oprocbuf (buffer-name oprocbuf))
(let ((obuf (current-buffer))
(opoint nil) (obeg nil) (oend nil))
(set-buffer oprocbuf)
(setq opoint (point))
(setq obeg (point-min))
(setq oend (point-max))
(let ((buffer-read-only nil)
(nchars (length string))
(ostart nil))
(widen)
(goto-char (process-mark process))
(setq ostart (point))
(if (<= (point) opoint)
(setq opoint (+ opoint nchars)))
(if (< (point) obeg)
(setq obeg (+ obeg nchars)))
(if (<= (point) oend)
(setq oend (+ oend nchars)))
(insert-before-markers string)
(if (= (window-start (selected-window)) (point))
(set-window-start (selected-window) (- (point) (length string))))
(if (and comint-last-input-end
(marker-buffer comint-last-input-end)
(= (point) comint-last-input-end))
(set-marker comint-last-input-end (- comint-last-input-end nchars)))
(set-marker comint-last-output-start ostart)
(set-marker (process-mark process) (point))
(force-mode-line-update))
(narrow-to-region obeg oend)
(goto-char opoint)
(run-hook-with-args 'comint-output-filter-functions string)
(set-buffer obuf)))))
(defun comint-preinput-scroll-to-bottom ()
"Go to the end of buffer in all windows showing it.
Movement occurs if point in the selected window is not after the process mark,
and `this-command' is an insertion command. Insertion commands recognised
are `self-insert-command', `comint-magic-space', `yank', and `hilit-yank'.
Depends on the value of `comint-scroll-to-bottom-on-input'.
This function should be a pre-command hook."
(if (and comint-scroll-to-bottom-on-input
(memq this-command '(self-insert-command comint-magic-space yank
hilit-yank)))
(let* ((selected (selected-window))
(current (current-buffer))
(process (get-buffer-process current))
(scroll comint-scroll-to-bottom-on-input))
(if (and process (< (point) (process-mark process)))
(if (eq scroll 'this)
(goto-char (point-max))
(walk-windows
(function (lambda (window)
(if (and (eq (window-buffer window) current)
(or (eq scroll t) (eq scroll 'all)))
(progn
(select-window window)
(goto-char (point-max))
(select-window selected)))))
nil t))))))
(defun comint-postoutput-scroll-to-bottom (string)
"Go to the end of buffer in all windows showing it.
Does not scroll if the current line is the last line in the buffer.
Depends on the value of `comint-scroll-to-bottom-on-output' and
`comint-scroll-show-maximum-output'.
This function should be in the list `comint-output-filter-functions'."
(let* ((selected (selected-window))
(current (current-buffer))
(process (get-buffer-process current))
(scroll comint-scroll-to-bottom-on-output))
(unwind-protect
(if process
(walk-windows
(function (lambda (window)
(if (eq (window-buffer window) current)
(progn
(select-window window)
(if (and (< (point) (process-mark process))
(or (eq scroll t) (eq scroll 'all)
(and (eq scroll 'this) (eq selected window))
(and (eq scroll 'others) (not (eq selected window)))
(and (marker-position comint-last-output-start)
(>= (point) comint-last-output-start))))
(goto-char (process-mark process)))
(if (and comint-scroll-show-maximum-output
(>= (point) (process-mark process)))
(save-excursion
(goto-char (point-max))
(recenter -1)))
(select-window selected)))))
nil t))
(set-buffer current))))
(defun comint-truncate-buffer (&optional string)
"Truncate the buffer to `comint-buffer-maximum-size'.
This function could be on `comint-output-filter-functions' or bound to a key."
(interactive)
(save-excursion
(goto-char (process-mark (get-buffer-process (current-buffer))))
(forward-line (- comint-buffer-maximum-size))
(beginning-of-line)
(delete-region (point-min) (point))))
(defun comint-strip-ctrl-m (&optional string)
"Strip trailing `^M' characters from the current output group.
This function could be on `comint-output-filter-functions' or bound to a key."
(interactive)
(let ((pmark (process-mark (get-buffer-process (current-buffer)))))
(save-excursion
(condition-case nil
(goto-char
(if (interactive-p) comint-last-input-end comint-last-output-start))
(error nil))
(while (re-search-forward "\r+$" pmark t)
(replace-match "" t t)))))
(defalias 'shell-strip-ctrl-m 'comint-strip-ctrl-m)
(defun comint-show-maximum-output ()
"Put the end of the buffer at the bottom of the window."
(interactive)
(goto-char (point-max))
(recenter -1))
(defun comint-get-old-input-default ()
"Default for `comint-get-old-input'.
Take the current line, and discard any initial text matching
`comint-prompt-regexp'."
(save-excursion
(beginning-of-line)
(comint-skip-prompt)
(let ((beg (point)))
(end-of-line)
(buffer-substring beg (point)))))
(defun comint-copy-old-input ()
"Insert after prompt old input at point as new input to be edited.
Calls `comint-get-old-input' to get old input."
(interactive)
(let ((input (funcall comint-get-old-input))
(process (get-buffer-process (current-buffer))))
(if (not process)
(error "Current buffer has no process")
(goto-char (process-mark process))
(insert input))))
(defun comint-skip-prompt ()
"Skip past the text matching regexp `comint-prompt-regexp'.
If this takes us past the end of the current line, don't skip at all."
(let ((eol (save-excursion (end-of-line) (point))))
(if (and (looking-at comint-prompt-regexp)
(<= (match-end 0) eol))
(goto-char (match-end 0)))))
(defun comint-after-pmark-p ()
"Return t if point is after the process output marker."
(let ((pmark (process-mark (get-buffer-process (current-buffer)))))
(<= (marker-position pmark) (point))))
(defun comint-simple-send (proc string)
"Default function for sending to PROC input STRING.
This just sends STRING plus a newline. To override this,
set the hook `comint-input-sender'."
(comint-send-string proc string)
(comint-send-string proc "\n"))
(defun comint-bol (arg)
"Goes to the beginning of line, then skips past the prompt, if any.
If prefix argument is given (\\[universal-argument]) the prompt is not skipped.
The prompt skip is done by skipping text matching the regular expression
`comint-prompt-regexp', a buffer local variable."
(interactive "P")
(beginning-of-line)
(if (null arg) (comint-skip-prompt)))
(defun comint-read-noecho (prompt &optional stars)
"Read a single line of text from user without echoing, and return it.
Prompt with argument PROMPT, a string. Optional argument STARS causes
input to be echoed with '*' characters on the prompt line. Input ends with
RET, LFD, or ESC. DEL or C-h rubs out. C-u kills line. C-g aborts (if
`inhibit-quit' is set because e.g. this function was called from a process
filter and C-g is pressed, this function returns nil rather than a string).
Note that the keystrokes comprising the text can still be recovered
\(temporarily) with \\[view-lossage]. Some people find this worrysome.
Once the caller uses the password, it can erase the password
by doing (fillarray STRING 0)."
(let ((ans "")
(newans nil)
(c 0)
(echo-keystrokes 0)
(cursor-in-echo-area t)
(message-log-max nil)
(done nil))
(while (not done)
(if stars
(message "%s%s" prompt (make-string (length ans) ?*))
(message "%s" prompt))
(setq c (read-char-exclusive))
(cond ((= c ?\C-g)
(setq quit-flag t
done t))
((or (= c ?\r) (= c ?\n) (= c ?\e))
(setq done t))
((= c ?\C-u)
(fillarray ans 0)
(setq ans ""))
((and (/= c ?\b) (/= c ?\177))
(setq newans (concat ans (char-to-string c)))
(fillarray ans 0)
(setq ans newans))
((> (length ans) 0)
(aset ans (1- (length ans)) 0)
(setq ans (substring ans 0 -1)))))
(if quit-flag
(prog1
(setq quit-flag nil)
(message "Quit")
(beep t))
(message "")
ans)))
(defun send-invisible (str)
"Read a string without echoing.
Then send it to the process running in the current buffer.
The string is sent using `comint-input-sender'.
Security bug: your string can still be temporarily recovered with
\\[view-lossage]."
(interactive "P") (let ((proc (get-buffer-process (current-buffer))))
(cond ((not proc)
(error "Current buffer has no process"))
((stringp str)
(funcall comint-input-sender proc str))
(t
(let ((str (comint-read-noecho "Non-echoed text: " t)))
(if (stringp str)
(send-invisible str)
(message "Warning: text will be echoed")))))))
(defun comint-watch-for-password-prompt (string)
"Prompt in the minibuffer for password and send without echoing.
This function uses `send-invisible' to read and send a password to the buffer's
process if STRING contains a password prompt defined by
`comint-password-prompt-regexp'.
This function could be in the list `comint-output-filter-functions'."
(if (string-match comint-password-prompt-regexp string)
(send-invisible nil)))
(defalias 'comint-send-string 'process-send-string)
(defalias 'comint-send-region 'process-send-region)
(defun comint-kill-output ()
"Kill all output from interpreter since last input.
Does not delete the prompt."
(interactive)
(let ((proc (get-buffer-process (current-buffer)))
(replacement nil))
(save-excursion
(let ((pmark (progn (goto-char (process-mark proc))
(beginning-of-line nil)
(point-marker))))
(delete-region comint-last-input-end pmark)
(goto-char (process-mark proc))
(setq replacement (concat "*** output flushed ***\n"
(buffer-substring pmark (point))))
(delete-region pmark (point))))
(comint-output-filter proc replacement)))
(defun comint-show-output ()
"Display start of this batch of interpreter output at top of window.
Sets mark to the value of point when this command is run."
(interactive)
(push-mark)
(let ((pos (point)))
(goto-char (or (marker-position comint-last-input-end) (point-max)))
(beginning-of-line 0)
(set-window-start (selected-window) (point))
(comint-skip-prompt)))
(defun comint-interrupt-subjob ()
"Interrupt the current subjob.
This command also kills the pending input
between the process-mark and point."
(interactive)
(comint-kill-input)
(interrupt-process nil comint-ptyp))
(defun comint-kill-subjob ()
"Send kill signal to the current subjob.
This command also kills the pending input
between the process-mark and point."
(interactive)
(comint-kill-input)
(kill-process nil comint-ptyp))
(defun comint-quit-subjob ()
"Send quit signal to the current subjob.
This command also kills the pending input
between the process-mark and point."
(interactive)
(comint-kill-input)
(quit-process nil comint-ptyp))
(defun comint-stop-subjob ()
"Stop the current subjob.
This command also kills the pending input
between the process-mark and point.
WARNING: if there is no current subjob, you can end up suspending
the top-level process running in the buffer. If you accidentally do
this, use \\[comint-continue-subjob] to resume the process. (This
is not a problem with most shells, since they ignore this signal.)"
(interactive)
(comint-kill-input)
(stop-process nil comint-ptyp))
(defun comint-continue-subjob ()
"Send CONT signal to process buffer's process group.
Useful if you accidentally suspend the top-level process."
(interactive)
(continue-process nil comint-ptyp))
(defun comint-kill-input ()
"Kill all text from last stuff output by interpreter to point."
(interactive)
(let ((pmark (process-mark (get-buffer-process (current-buffer)))))
(if (> (point) (marker-position pmark))
(kill-region pmark (point)))))
(defun comint-delchar-or-maybe-eof (arg)
"Delete ARG characters forward or send an EOF to subprocess.
Sends an EOF only if point is at the end of the buffer and there is no input."
(interactive "p")
(let ((proc (get-buffer-process (current-buffer))))
(if (and (eobp) proc (= (point) (marker-position (process-mark proc))))
(process-send-eof)
(delete-char arg))))
(defun comint-send-eof ()
"Send an EOF to the current buffer's process."
(interactive)
(process-send-eof))
(defun comint-backward-matching-input (regexp arg)
"Search backward through buffer for match for REGEXP.
Matches are searched for on lines that match `comint-prompt-regexp'.
With prefix argument N, search for Nth previous match.
If N is negative, find the next or Nth next match."
(interactive (comint-regexp-arg "Backward input matching (regexp): "))
(let* ((re (concat comint-prompt-regexp ".*" regexp))
(pos (save-excursion (end-of-line (if (> arg 0) 0 1))
(if (re-search-backward re nil t arg)
(point)))))
(if (null pos)
(progn (message "Not found")
(ding))
(goto-char pos)
(comint-bol nil))))
(defun comint-forward-matching-input (regexp arg)
"Search forward through buffer for match for REGEXP.
Matches are searched for on lines that match `comint-prompt-regexp'.
With prefix argument N, search for Nth following match.
If N is negative, find the previous or Nth previous match."
(interactive (comint-regexp-arg "Forward input matching (regexp): "))
(comint-backward-matching-input regexp (- arg)))
(defun comint-next-prompt (n)
"Move to end of Nth next prompt in the buffer.
See `comint-prompt-regexp'."
(interactive "p")
(let ((paragraph-start comint-prompt-regexp))
(end-of-line (if (> n 0) 1 0))
(forward-paragraph n)
(comint-skip-prompt)))
(defun comint-previous-prompt (n)
"Move to end of Nth previous prompt in the buffer.
See `comint-prompt-regexp'."
(interactive "p")
(comint-next-prompt (- n)))
(defun comint-source-default (previous-dir/file source-modes)
(cond ((and buffer-file-name (memq major-mode source-modes))
(cons (file-name-directory buffer-file-name)
(file-name-nondirectory buffer-file-name)))
(previous-dir/file)
(t
(cons default-directory nil))))
(defun comint-check-source (fname)
(let ((buff (get-file-buffer fname)))
(if (and buff
(buffer-modified-p buff)
(y-or-n-p (format "Save buffer %s first? " (buffer-name buff))))
(let ((old-buffer (current-buffer)))
(set-buffer buff)
(save-buffer)
(set-buffer old-buffer)))))
(defun comint-extract-string ()
"Return string around POINT that starts the current line, or nil."
(save-excursion
(let* ((point (point))
(bol (progn (beginning-of-line) (point)))
(eol (progn (end-of-line) (point)))
(start (progn (goto-char point)
(and (search-backward "\"" bol t)
(1+ (point)))))
(end (progn (goto-char point)
(and (search-forward "\"" eol t)
(1- (point))))))
(and start end
(buffer-substring start end)))))
(defun comint-get-source (prompt prev-dir/file source-modes mustmatch-p)
(let* ((def (comint-source-default prev-dir/file source-modes))
(stringfile (comint-extract-string))
(sfile-p (and stringfile
(condition-case ()
(file-exists-p stringfile)
(error nil))
(not (file-directory-p stringfile))))
(defdir (if sfile-p (file-name-directory stringfile)
(car def)))
(deffile (if sfile-p (file-name-nondirectory stringfile)
(cdr def)))
(ans (read-file-name (if deffile (format "%s(default %s) "
prompt deffile)
prompt)
defdir
(concat defdir deffile)
mustmatch-p)))
(list (expand-file-name (substitute-in-file-name ans)))))
(defun comint-proc-query (proc str)
(let* ((proc-buf (process-buffer proc))
(proc-mark (process-mark proc)))
(display-buffer proc-buf)
(set-buffer proc-buf) (let ((proc-win (get-buffer-window proc-buf))
(proc-pt (marker-position proc-mark)))
(comint-send-string proc str) (accept-process-output proc) (unless (pos-visible-in-window-p proc-pt proc-win)
(let ((opoint (window-point proc-win)))
(set-window-point proc-win proc-mark)
(sit-for 0)
(if (not (pos-visible-in-window-p opoint proc-win))
(push-mark opoint)
(set-window-point proc-win opoint)))))))
(defcustom comint-completion-autolist nil
"*If non-nil, automatically list possibilities on partial completion.
This mirrors the optional behavior of tcsh."
:type 'boolean
:group 'comint-completion)
(defcustom comint-completion-addsuffix t
"*If non-nil, add a `/' to completed directories, ` ' to file names.
If a cons pair, it should be of the form (DIRSUFFIX . FILESUFFIX) where
DIRSUFFIX and FILESUFFIX are strings added on unambiguous or exact completion.
This mirrors the optional behavior of tcsh."
:type 'boolean
:group 'comint-completion)
(defcustom comint-completion-recexact nil
"*If non-nil, use shortest completion if characters cannot be added.
This mirrors the optional behavior of tcsh.
A non-nil value is useful if `comint-completion-autolist' is non-nil too."
:type 'boolean
:group 'comint-completion)
(defcustom comint-completion-fignore nil
"*List of suffixes to be disregarded during file completion.
This mirrors the optional behavior of bash and tcsh.
Note that this applies to `comint-dynamic-complete-filename' only."
:type '(repeat (string :tag "Suffix"))
:group 'comint-completion)
(defvar comint-file-name-prefix ""
"Prefix prepended to absolute file names taken from process input.
This is used by comint's and shell's completion functions, and by shell's
directory tracking functions.")
(defvar comint-file-name-chars
(if (memq system-type '(ms-dos windows-nt))
"~/A-Za-z0-9_^$!#%&{}@`'.,:()-"
"~/A-Za-z0-9+@:_.$#%,={}-")
"String of characters valid in a file name.
Note that all non-ASCII characters are considered valid in a file name
regardless of what this variable says.
This is a good thing to set in mode hooks.")
(defvar comint-file-name-quote-list nil
"List of characters to quote with `\\' when in a file name.
This is a good thing to set in mode hooks.")
(defun comint-directory (directory)
(expand-file-name (if (file-name-absolute-p directory)
(concat comint-file-name-prefix directory)
directory)))
(defun comint-word (word-chars)
"Return the word of WORD-CHARS at point, or nil if non is found.
Word constituents are considered to be those in WORD-CHARS, which is like the
inside of a \"[...]\" (see `skip-chars-forward'),
plus all non-ASCII characters."
(save-excursion
(let ((non-word-chars (concat "[^\\\\" word-chars "]")) (here (point)))
(while (and (re-search-backward non-word-chars nil 'move)
(or (>= (following-char) 128)
(eq (preceding-char) ?\\)))
(backward-char 1))
(when (or (not (bobp)) (looking-at non-word-chars))
(forward-char 1))
(when (< (point) here)
(set-match-data (list (point) here))
(match-string 0)))))
(defun comint-substitute-in-file-name (filename)
"Return FILENAME with environment variables substituted.
Supports additional environment variable syntax of the command
interpreter (e.g., the percent notation of cmd.exe on NT)."
(let ((name (substitute-in-file-name filename)))
(if (memq system-type '(ms-dos windows-nt))
(let (env-var-name
env-var-val)
(save-match-data
(while (string-match "%\\([^\\\\/]*\\)%" name)
(setq env-var-name
(substring name (match-beginning 1) (match-end 1)))
(setq env-var-val (if (getenv env-var-name)
(getenv env-var-name)
""))
(setq name (replace-match env-var-val nil nil name))))))
name))
(defun comint-match-partial-filename ()
"Return the filename at point, or nil if non is found.
Environment variables are substituted. See `comint-word'."
(let ((filename (comint-word comint-file-name-chars)))
(and filename (comint-substitute-in-file-name
(comint-unquote-filename filename)))))
(defun comint-quote-filename (filename)
"Return FILENAME with magic characters quoted.
Magic characters are those in `comint-file-name-quote-list'."
(if (null comint-file-name-quote-list)
filename
(let ((regexp
(format "\\(^\\|[^\\]\\)\\([%s]\\)"
(mapconcat 'char-to-string comint-file-name-quote-list ""))))
(save-match-data
(while (string-match regexp filename)
(setq filename (replace-match "\\1\\\\\\2" nil nil filename)))
filename))))
(defun comint-unquote-filename (filename)
"Return FILENAME with quoted characters unquoted."
(if (null comint-file-name-quote-list)
filename
(save-match-data
(let ((i 0))
(while (string-match "\\\\\\(.\\)" filename i)
(setq filename (replace-match "\\1" nil nil filename))
(setq i (+ 1 (match-beginning 0)))))
filename)))
(defun comint-dynamic-complete ()
"Dynamically perform completion at point.
Calls the functions in `comint-dynamic-complete-functions' to perform
completion until a function returns non-nil, at which point completion is
assumed to have occurred."
(interactive)
(run-hook-with-args-until-success 'comint-dynamic-complete-functions))
(defun comint-dynamic-complete-filename ()
"Dynamically complete the filename at point.
Completes if after a filename. See `comint-match-partial-filename' and
`comint-dynamic-complete-as-filename'.
This function is similar to `comint-replace-by-expanded-filename', except that
it won't change parts of the filename already entered in the buffer; it just
adds completion characters to the end of the filename. A completions listing
may be shown in a help buffer if completion is ambiguous.
Completion is dependent on the value of `comint-completion-addsuffix',
`comint-completion-recexact' and `comint-completion-fignore', and the timing of
completions listing is dependent on the value of `comint-completion-autolist'.
Returns t if successful."
(interactive)
(when (comint-match-partial-filename)
(unless (window-minibuffer-p (selected-window))
(message "Completing file name..."))
(comint-dynamic-complete-as-filename)))
(defun comint-dynamic-complete-as-filename ()
"Dynamically complete at point as a filename.
See `comint-dynamic-complete-filename'. Returns t if successful."
(let* ((completion-ignore-case (memq system-type '(ms-dos windows-nt)))
(completion-ignored-extensions comint-completion-fignore)
(minibuffer-p (window-minibuffer-p (selected-window)))
(success t)
(dirsuffix (cond ((not comint-completion-addsuffix)
"")
((not (consp comint-completion-addsuffix))
(char-to-string directory-sep-char))
(t
(car comint-completion-addsuffix))))
(filesuffix (cond ((not comint-completion-addsuffix)
"")
((not (consp comint-completion-addsuffix))
" ")
(t
(cdr comint-completion-addsuffix))))
(filename (or (comint-match-partial-filename) ""))
(pathdir (file-name-directory filename))
(pathnondir (file-name-nondirectory filename))
(directory (if pathdir (comint-directory pathdir) default-directory))
(completion (file-name-completion pathnondir directory)))
(cond ((null completion)
(message "No completions of %s" filename)
(setq success nil))
((eq completion t) (insert filesuffix)
(unless minibuffer-p
(message "Sole completion")))
((string-equal completion "") (comint-dynamic-list-filename-completions))
(t (let ((file (concat (file-name-as-directory directory) completion)))
(insert (comint-quote-filename
(substring (directory-file-name completion)
(length pathnondir))))
(cond ((symbolp (file-name-completion completion directory))
(insert (if (file-directory-p file) dirsuffix filesuffix))
(unless minibuffer-p
(message "Completed")))
((and comint-completion-recexact comint-completion-addsuffix
(string-equal pathnondir completion)
(file-exists-p file))
(insert (if (file-directory-p file) dirsuffix filesuffix))
(unless minibuffer-p
(message "Completed shortest")))
((or comint-completion-autolist
(string-equal pathnondir completion))
(comint-dynamic-list-filename-completions))
(t
(unless minibuffer-p
(message "Partially completed")))))))
success))
(defun comint-replace-by-expanded-filename ()
"Dynamically expand and complete the filename at point.
Replace the filename with an expanded, canonicalised and completed replacement.
\"Expanded\" means environment variables (e.g., $HOME) and `~'s are replaced
with the corresponding directories. \"Canonicalised\" means `..' and `.' are
removed, and the filename is made absolute instead of relative. For expansion
see `expand-file-name' and `substitute-in-file-name'. For completion see
`comint-dynamic-complete-filename'."
(interactive)
(replace-match (expand-file-name (comint-match-partial-filename)) t t)
(comint-dynamic-complete-filename))
(defun comint-dynamic-simple-complete (stub candidates)
"Dynamically complete STUB from CANDIDATES list.
This function inserts completion characters at point by completing STUB from
the strings in CANDIDATES. A completions listing may be shown in a help buffer
if completion is ambiguous.
Returns nil if no completion was inserted.
Returns `sole' if completed with the only completion match.
Returns `shortest' if completed with the shortest of the completion matches.
Returns `partial' if completed as far as possible with the completion matches.
Returns `listed' if a completion listing was shown.
See also `comint-dynamic-complete-filename'."
(let* ((completion-ignore-case (memq system-type '(ms-dos windows-nt)))
(suffix (cond ((not comint-completion-addsuffix) "")
((not (consp comint-completion-addsuffix)) " ")
(t (cdr comint-completion-addsuffix))))
(candidates (mapcar (function (lambda (x) (list x))) candidates))
(completions (all-completions stub candidates)))
(cond ((null completions)
(message "No completions of %s" stub)
nil)
((= 1 (length completions)) (let ((completion (car completions)))
(if (string-equal completion stub)
(message "Sole completion")
(insert (substring completion (length stub)))
(message "Completed"))
(insert suffix)
'sole))
(t (let ((completion (try-completion stub candidates)))
(insert (substring completion (length stub)))
(cond ((and comint-completion-recexact comint-completion-addsuffix
(string-equal stub completion)
(member completion completions))
(insert suffix)
(message "Completed shortest")
'shortest)
((or comint-completion-autolist
(string-equal stub completion))
(comint-dynamic-list-completions completions)
'listed)
(t
(message "Partially completed")
'partial)))))))
(defun comint-dynamic-list-filename-completions ()
"List in help buffer possible completions of the filename at point."
(interactive)
(let* ((completion-ignore-case (memq system-type '(ms-dos windows-nt)))
(filename (or (comint-match-partial-filename) ""))
(pathdir (file-name-directory filename))
(pathnondir (file-name-nondirectory filename))
(directory (if pathdir (comint-directory pathdir) default-directory))
(completions (file-name-all-completions pathnondir directory)))
(if (not completions)
(message "No completions of %s" filename)
(comint-dynamic-list-completions
(mapcar 'comint-quote-filename completions)))))
(defun comint-dynamic-list-completions (completions)
"List in help buffer sorted COMPLETIONS.
Typing SPC flushes the help buffer."
(let ((conf (current-window-configuration)))
(with-output-to-temp-buffer "*Completions*"
(display-completion-list (sort completions 'string-lessp)))
(message "Hit space to flush")
(let (key first)
(if (save-excursion
(set-buffer (get-buffer "*Completions*"))
(setq key (read-key-sequence nil)
first (aref key 0))
(and (consp first) (consp (event-start first))
(eq (window-buffer (posn-window (event-start first)))
(get-buffer "*Completions*"))
(eq (key-binding key) 'mouse-choose-completion)))
(progn
(mouse-choose-completion first)
(set-window-configuration conf))
(if (eq first ?\ )
(set-window-configuration conf)
(setq unread-command-events (listify-key-sequence key)))))))
(defun comint-get-next-from-history ()
"After fetching a line from input history, this fetches the following line.
In other words, this recalls the input line after the line you recalled last.
You can use this to repeat a sequence of input lines."
(interactive)
(if comint-save-input-ring-index
(progn
(setq comint-input-ring-index (1+ comint-save-input-ring-index))
(comint-next-input 1))
(message "No previous history command")))
(defun comint-accumulate ()
"Accumulate a line to send as input along with more lines.
This inserts a newline so that you can enter more text
to be sent along with this line. Use \\[comint-send-input]
to send all the accumulated input, at once.
The entire accumulated text becomes one item in the input history
when you send it."
(interactive)
(insert "\n")
(set-marker comint-accum-marker (point))
(if comint-input-ring-index
(setq comint-save-input-ring-index
(- comint-input-ring-index 1))))
(defun comint-goto-process-mark ()
"Move point to the process mark.
The process mark separates output, and input already sent,
from input that has not yet been sent."
(interactive)
(let ((proc (or (get-buffer-process (current-buffer))
(error "Current buffer has no process"))))
(goto-char (process-mark proc))
(message "Point is now at the process mark")))
(defun comint-bol-or-process-mark ()
"Move point to beginning of line (after prompt) or to the process mark.
The first time you use this command, it moves to the beginning of the line
\(but after the prompt, if any). If you repeat it again immediately,
it moves point to the process mark.
The process mark separates the process output, along with input already sent,
from input that has not yet been sent. Ordinarily, the process mark
is at the beginning of the current input line; but if you have
used \\[comint-accumulate] to send multiple lines at once,
the process mark is at the beginning of the accumulated input."
(interactive)
(if (not (eq last-command 'comint-bol-or-process-mark))
(comint-bol nil)
(comint-goto-process-mark)))
(defun comint-set-process-mark ()
"Set the process mark at point."
(interactive)
(let ((proc (or (get-buffer-process (current-buffer))
(error "Current buffer has no process"))))
(set-marker (process-mark proc) (point))
(message "Process mark set")))
(provide 'comint)