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-;;; cmulisp.el --- improved version of standard inferior-lisp mode
-
-;;; Copyright Olin Shivers (1988).
-
-;; Keywords: processes, lisp
-
-;;; Please imagine a long, tedious, legalistic 5-page gnu-style copyright
-;;; notice appearing here to the effect that you may use this code any
-;;; way you like, as long as you don't charge money for it, remove this
-;;; notice, or hold me liable for its results.
-
-;;; Commentary:
-
-;;; This replaces the standard inferior-lisp mode.
-;;; Hacked from tea.el by Olin Shivers (shivers@cs.cmu.edu). 8/88
-;;; Please send me bug reports, bug fixes, and extensions, so that I can
-;;; merge them into the master source.
-;;;
-;;; Change log at end of file.
-
-;;; This file defines a a lisp-in-a-buffer package (cmulisp mode) built on top
-;;; of comint mode. Cmulisp mode is similar to, and intended to replace, its
-;;; counterpart in the standard gnu emacs release. This replacements is more
-;;; featureful, robust, and uniform than the released version. The key
-;;; bindings are also more compatible with the bindings of Hemlock and Zwei
-;;; (the Lisp Machine emacs).
-
-;;; Since this mode is built on top of the general command-interpreter-in-
-;;; a-buffer mode (comint mode), it shares a common base functionality,
-;;; and a common set of bindings, with all modes derived from comint mode.
-;;; This makes these modes easier to use.
-
-;;; For documentation on the functionality provided by comint mode, and
-;;; the hooks available for customising it, see the file comint.el.
-;;; For further information on cmulisp mode, see the comments below.
-
-;;; Needs fixin:
-;;; The load-file/compile-file default mechanism could be smarter -- it
-;;; doesn't know about the relationship between filename extensions and
-;;; whether the file is source or executable. If you compile foo.lisp
-;;; with compile-file, then the next load-file should use foo.bin for
-;;; the default, not foo.lisp. This is tricky to do right, particularly
-;;; because the extension for executable files varies so much (.o, .bin,
-;;; .lbin, .mo, .vo, .ao, ...).
-;;;
-;;; It would be nice if cmulisp (and inferior scheme, T, ...) modes
-;;; had a verbose minor mode wherein sending or compiling defuns, etc.
-;;; would be reflected in the transcript with suitable comments, e.g.
-;;; ";;; redefining fact". Several ways to do this. Which is right?
-;;;
-;;; When sending text from a source file to a subprocess, the process-mark can
-;;; move off the window, so you can lose sight of the process interactions.
-;;; Maybe I should ensure the process mark is in the window when I send
-;;; text to the process? Switch selectable?
-
-(require 'comint)
-;; YOUR .EMACS FILE
-;;=============================================================================
-;; Some suggestions for your .emacs file.
-;;
-;; ; If cmulisp lives in some non-standard directory, you must tell emacs
-;; ; where to get it. This may or may not be necessary.
-;; (setq load-path (cons (expand-file-name "~jones/lib/emacs") load-path))
-;;
-;; ; Autoload cmulisp from file cmulisp.el
-;; (autoload 'cmulisp "cmulisp"
-;; "Run an inferior Lisp process."
-;; t)
-;;
-;; ; Define C-c t to run my favorite command in cmulisp mode:
-;; (setq cmulisp-load-hook
-;; '((lambda ()
-;; (define-key cmulisp-mode-map "\C-ct" 'favorite-cmd))))
-
-;; Brief Command Documentation:
-;;============================================================================
-;; Comint Mode Commands: (common to cmulisp and all comint-derived modes)
-;;
-;; m-p comint-previous-input Cycle backwards in input history
-;; m-n comint-next-input Cycle forwards
-;; m-c-r comint-previous-input-matching Search backwards in input history
-;; return comint-send-input
-;; c-a comint-bol Beginning of line; skip prompt.
-;; c-d comint-delchar-or-maybe-eof Delete char unless at end of buff.
-;; c-c c-u comint-kill-input ^u
-;; c-c c-w backward-kill-word ^w
-;; c-c c-c comint-interrupt-subjob ^c
-;; c-c c-z comint-stop-subjob ^z
-;; c-c c-\ comint-quit-subjob ^\
-;; c-c c-o comint-kill-output Delete last batch of process output
-;; c-c c-r comint-show-output Show last batch of process output
-;; send-invisible Read line w/o echo & send to proc
-;; comint-continue-subjob Useful if you accidentally suspend
-;; top-level job.
-;; comint-mode-hook is the comint mode hook.
-
-;; CMU Lisp Mode Commands:
-;; c-m-x lisp-send-defun This binding is a gnu convention.
-;; c-c c-l lisp-load-file Prompt for file name; tell Lisp to load it.
-;; c-c c-k lisp-compile-file Prompt for file name; tell Lisp to kompile it.
-;; Filename completion is available, of course.
-;;
-;; Additionally, these commands are added to the key bindings of Lisp mode:
-;; c-m-x lisp-eval-defun This binding is a gnu convention.
-;; c-c c-e lisp-eval-defun Send the current defun to Lisp process.
-;; c-x c-e lisp-eval-last-sexp Send the previous sexp to Lisp process.
-;; c-c c-r lisp-eval-region Send the current region to Lisp process.
-;; c-c c-c lisp-compile-defun Compile the current defun in Lisp process.
-;; c-c c-z switch-to-lisp Switch to the Lisp process buffer.
-;; c-c c-l lisp-load-file (See above. In a Lisp file buffer, default
-;; c-c c-k lisp-compile-file is to load/compile the current file.)
-;; c-c c-d lisp-describe-sym Query Lisp for a symbol's description.
-;; c-c c-a lisp-show-arglist Query Lisp for function's arglist.
-;; c-c c-f lisp-show-function-documentation Query Lisp for a function's doc.
-;; c-c c-v lisp-show-variable-documentation Query Lisp for a variable's doc.
-
-;; cmulisp Fires up the Lisp process.
-;; lisp-compile-region Compile all forms in the current region.
-;;
-;; CMU Lisp Mode Variables:
-;; cmulisp-filter-regexp Match this => don't get saved on input hist
-;; inferior-lisp-program Name of Lisp program run-lisp executes
-;; inferior-lisp-load-command Customises lisp-load-file
-;; cmulisp-mode-hook
-;; inferior-lisp-prompt Initialises comint-prompt-regexp.
-;; Backwards compatibility.
-;; lisp-source-modes Anything loaded into a buffer that's in
-;; one of these modes is considered Lisp
-;; source by lisp-load/compile-file.
-
-;;; Code:
-
-(require 'comint)
-
-;;; Read the rest of this file for more information.
-
-
-;;; Code:
-
-(defvar cmulisp-filter-regexp "\\`\\s *\\(:\\(\\w\\|\\s_\\)\\)?\\s *\\'"
- "*What not to save on inferior Lisp's input history
-Input matching this regexp is not saved on the input history in cmulisp
-mode. Default is whitespace followed by 0 or 1 single-letter :keyword
-(as in :a, :c, etc.)")
-
-(defvar cmulisp-mode-map nil)
-(cond ((not cmulisp-mode-map)
- (setq cmulisp-mode-map
- (nconc (full-copy-sparse-keymap comint-mode-map)
- shared-lisp-mode-map))
- (define-key cmulisp-mode-map "\C-x\C-e" 'lisp-eval-last-sexp)
- (define-key cmulisp-mode-map "\C-c\C-l" 'lisp-load-file)
- (define-key cmulisp-mode-map "\C-c\C-k" 'lisp-compile-file)
- (define-key cmulisp-mode-map "\C-c\C-a" 'lisp-show-arglist)
- (define-key cmulisp-mode-map "\C-c\C-d" 'lisp-describe-sym)
- (define-key cmulisp-mode-map "\C-c\C-f" 'lisp-show-function-documentation)
- (define-key cmulisp-mode-map "\C-c\C-v" 'lisp-show-variable-documentation)))
-
-;;; These commands augment Lisp mode, so you can process Lisp code in
-;;; the source files.
-(define-key lisp-mode-map "\M-\C-x" 'lisp-eval-defun) ; Gnu convention
-(define-key lisp-mode-map "\C-x\C-e" 'lisp-eval-last-sexp) ; Gnu convention
-(define-key lisp-mode-map "\C-c\C-e" 'lisp-eval-defun)
-(define-key lisp-mode-map "\C-c\C-r" 'lisp-eval-region)
-(define-key lisp-mode-map "\C-c\C-c" 'lisp-compile-defun)
-(define-key lisp-mode-map "\C-c\C-z" 'switch-to-lisp)
-(define-key lisp-mode-map "\C-c\C-l" 'lisp-load-file)
-(define-key lisp-mode-map "\C-c\C-k" 'lisp-compile-file) ; "kompile" file
-(define-key lisp-mode-map "\C-c\C-a" 'lisp-show-arglist)
-(define-key lisp-mode-map "\C-c\C-d" 'lisp-describe-sym)
-(define-key lisp-mode-map "\C-c\C-f" 'lisp-show-function-documentation)
-(define-key lisp-mode-map "\C-c\C-v" 'lisp-show-variable-documentation)
-
-(defvar cmulisp-buffer)
-
-;;; This function exists for backwards compatibility.
-;;; Previous versions of this package bound commands to C-c <letter>
-;;; bindings, which is not allowed by the gnumacs standard.
-
-(defun cmulisp-install-letter-bindings ()
- "This function binds many cmulisp commands to C-c <letter> bindings,
-where they are more accessible. C-c <letter> bindings are reserved for the
-user, so these bindings are non-standard. If you want them, you should
-have this function called by the cmulisp-load-hook:
- (setq cmulisp-load-hook '(cmulisp-install-letter-bindings))
-You can modify this function to install just the bindings you want."
-
- (define-key lisp-mode-map "\C-ce" 'lisp-eval-defun-and-go)
- (define-key lisp-mode-map "\C-cr" 'lisp-eval-region-and-go)
- (define-key lisp-mode-map "\C-cc" 'lisp-compile-defun-and-go)
- (define-key lisp-mode-map "\C-cz" 'switch-to-lisp)
- (define-key lisp-mode-map "\C-cl" 'lisp-load-file)
- (define-key lisp-mode-map "\C-ck" 'lisp-compile-file)
- (define-key lisp-mode-map "\C-ca" 'lisp-show-arglist)
- (define-key lisp-mode-map "\C-cd" 'lisp-describe-sym)
- (define-key lisp-mode-map "\C-cf" 'lisp-show-function-documentation)
- (define-key lisp-mode-map "\C-cv" 'lisp-show-variable-documentation)
-
- (define-key cmulisp-mode-map "\C-cl" 'lisp-load-file)
- (define-key cmulisp-mode-map "\C-ck" 'lisp-compile-file)
- (define-key cmulisp-mode-map "\C-ca" 'lisp-show-arglist)
- (define-key cmulisp-mode-map "\C-cd" 'lisp-describe-sym)
- (define-key cmulisp-mode-map "\C-cf" 'lisp-show-function-documentation)
- (define-key cmulisp-mode-map "\C-cv" 'lisp-show-variable-documentation))
-
-
-(defvar inferior-lisp-program "lisp"
- "*Program name for invoking an inferior Lisp with `cmulisp'.")
-
-(defvar inferior-lisp-load-command "(load \"%s\")\n"
- "*Format-string for building a Lisp expression to load a file.
-This format string should use %s to substitute a file name
-and should result in a Lisp expression that will command the inferior Lisp
-to load that file. The default works acceptably on most Lisps.
-The string \"(progn (load \\\"%s\\\" :verbose nil :print t) (values))\\\n\"
-produces cosmetically superior output for this application,
-but it works only in Common Lisp.")
-
-(defvar inferior-lisp-prompt "^[^> ]*>+:? *"
- "Regexp to recognise prompts in the inferior Lisp.
-Defaults to \"^[^> ]*>+:? *\", which works pretty good for Lucid, kcl,
-and franz. This variable is used to initialise comint-prompt-regexp in the
-cmulisp buffer.
-
-More precise choices:
-Lucid Common Lisp: \"^\\(>\\|\\(->\\)+\\) *\"
-franz: \"^\\(->\\|<[0-9]*>:\\) *\"
-kcl: \"^>+ *\"
-
-This is a fine thing to set in your .emacs file.")
-
-(defvar cmulisp-mode-hook '()
- "*Hook for customising cmulisp mode")
-
-(defun cmulisp-mode ()
- "Major mode for interacting with an inferior Lisp process.
-Runs a Lisp interpreter as a subprocess of Emacs, with Lisp I/O through an
-Emacs buffer. Variable inferior-lisp-program controls which Lisp interpreter
-is run. Variables inferior-lisp-prompt, cmulisp-filter-regexp and
-inferior-lisp-load-command can customize this mode for different Lisp
-interpreters.
-
-For information on running multiple processes in multiple buffers, see
-documentation for variable cmulisp-buffer.
-
-\\{cmulisp-mode-map}
-
-Customisation: Entry to this mode runs the hooks on comint-mode-hook and
-cmulisp-mode-hook (in that order).
-
-You can send text to the inferior Lisp process from other buffers containing
-Lisp source.
- switch-to-lisp switches the current buffer to the Lisp process buffer.
- lisp-eval-defun sends the current defun to the Lisp process.
- lisp-compile-defun compiles the current defun.
- lisp-eval-region sends the current region to the Lisp process.
- lisp-compile-region compiles the current region.
-
- Prefixing the lisp-eval/compile-defun/region commands with
- a \\[universal-argument] causes a switch to the Lisp process buffer after sending
- the text.
-
-Commands:
-Return after the end of the process' output sends the text from the
- end of process to point.
-Return before the end of the process' output copies the sexp ending at point
- to the end of the process' output, and sends it.
-Delete converts tabs to spaces as it moves back.
-Tab indents for Lisp; with argument, shifts rest
- of expression rigidly with the current line.
-C-M-q does Tab on each line starting within following expression.
-Paragraphs are separated only by blank lines. Semicolons start comments.
-If you accidentally suspend your process, use \\[comint-continue-subjob]
-to continue it."
- (interactive)
- (comint-mode)
- (setq comint-prompt-regexp inferior-lisp-prompt)
- (setq major-mode 'cmulisp-mode)
- (setq mode-name "CMU Lisp")
- (setq mode-line-process '(": %s"))
- (lisp-mode-variables t)
- (use-local-map cmulisp-mode-map) ;c-c c-k for "kompile" file
- (setq comint-get-old-input (function lisp-get-old-input))
- (setq comint-input-filter (function lisp-input-filter))
- (setq comint-input-sentinel 'ignore)
- (run-hooks 'cmulisp-mode-hook))
-
-(defun lisp-get-old-input ()
- "Snarf the sexp ending at point"
- (save-excursion
- (let ((end (point)))
- (backward-sexp)
- (buffer-substring (point) end))))
-
-(defun lisp-input-filter (str)
- "Don't save anything matching cmulisp-filter-regexp"
- (not (string-match cmulisp-filter-regexp str)))
-
-(defun cmulisp (cmd)
- "Run an inferior Lisp process, input and output via buffer *cmulisp*.
-If there is a process already running in *cmulisp*, just switch to that buffer.
-With argument, allows you to edit the command line (default is value
-of inferior-lisp-program). Runs the hooks from cmulisp-mode-hook (after the
-comint-mode-hook is run).
-\(Type \\[describe-mode] in the process buffer for a list of commands.)"
- (interactive (list (if current-prefix-arg
- (read-string "Run lisp: " inferior-lisp-program)
- inferior-lisp-program)))
- (if (not (comint-check-proc "*cmulisp*"))
- (let ((cmdlist (cmulisp-args-to-list cmd)))
- (set-buffer (apply (function make-comint) "cmulisp" (car cmdlist) nil
- (cdr cmdlist)))
- (cmulisp-mode)))
- (setq cmulisp-buffer "*cmulisp*")
- (switch-to-buffer "*cmulisp*"))
-
-;;; Break a string up into a list of arguments.
-;;; This will break if you have an argument with whitespace, as in
-;;; string = "-ab +c -x 'you lose'".
-(defun cmulisp-args-to-list (string)
- (let ((where (string-match "[ \t]" string)))
- (cond ((null where) (list string))
- ((not (= where 0))
- (cons (substring string 0 where)
- (tea-args-to-list (substring string (+ 1 where)
- (length string)))))
- (t (let ((pos (string-match "[^ \t]" string)))
- (if (null pos)
- nil
- (cmulisp-args-to-list (substring string pos
- (length string)))))))))
-
-(defun lisp-eval-region (start end &optional and-go)
- "Send the current region to the inferior Lisp process.
-Prefix argument means switch-to-lisp afterwards."
- (interactive "r\nP")
- (comint-send-region (cmulisp-proc) start end)
- (comint-send-string (cmulisp-proc) "\n")
- (if and-go (switch-to-lisp t)))
-
-(defun lisp-eval-defun (&optional and-go)
- "Send the current defun to the inferior Lisp process.
-Prefix argument means switch-to-lisp afterwards."
- (interactive "P")
- (save-excursion
- (end-of-defun)
- (skip-chars-backward " \t\n\r\f") ; Makes allegro happy
- (let ((end (point)))
- (beginning-of-defun)
- (lisp-eval-region (point) end)))
- (if and-go (switch-to-lisp t)))
-
-(defun lisp-eval-last-sexp (&optional and-go)
- "Send the previous sexp to the inferior Lisp process.
-Prefix argument means switch-to-lisp afterwards."
- (interactive "P")
- (lisp-eval-region (save-excursion (backward-sexp) (point)) (point) and-go))
-
-;;; Common Lisp COMPILE sux.
-(defun lisp-compile-region (start end &optional and-go)
- "Compile the current region in the inferior Lisp process.
-Prefix argument means switch-to-lisp afterwards."
- (interactive "r\nP")
- (comint-send-string (cmulisp-proc)
- (format "(funcall (compile nil `(lambda () (progn 'compile %s))))\n"
- (buffer-substring start end)))
- (if and-go (switch-to-lisp t)))
-
-(defun lisp-compile-defun (&optional and-go)
- "Compile the current defun in the inferior Lisp process.
-Prefix argument means switch-to-lisp afterwards."
- (interactive "P")
- (save-excursion
- (end-of-defun)
- (skip-chars-backward " \t\n\r\f") ; Makes allegro happy
- (let ((e (point)))
- (beginning-of-defun)
- (lisp-compile-region (point) e)))
- (if and-go (switch-to-lisp t)))
-
-(defun switch-to-lisp (eob-p)
- "Switch to the inferior Lisp process buffer.
-With argument, positions cursor at end of buffer."
- (interactive "P")
- (if (get-buffer cmulisp-buffer)
- (pop-to-buffer cmulisp-buffer)
- (error "No current process buffer. See variable cmulisp-buffer."))
- (cond (eob-p
- (push-mark)
- (goto-char (point-max)))))
-
-
-;;; Now that lisp-compile/eval-defun/region takes an optional prefix arg,
-;;; these commands are redundant. But they are kept around for the user
-;;; to bind if he wishes, for backwards functionality, and because it's
-;;; easier to type C-c e than C-u C-c C-e.
-
-(defun lisp-eval-region-and-go (start end)
- "Send the current region to the inferior Lisp,
-and switch to the process buffer."
- (interactive "r")
- (lisp-eval-region start end t))
-
-(defun lisp-eval-defun-and-go ()
- "Send the current defun to the inferior Lisp,
-and switch to the process buffer."
- (interactive)
- (lisp-eval-defun t))
-
-(defun lisp-compile-region-and-go (start end)
- "Compile the current region in the inferior Lisp,
-and switch to the process buffer."
- (interactive "r")
- (lisp-compile-region start end t))
-
-(defun lisp-compile-defun-and-go ()
- "Compile the current defun in the inferior Lisp,
-and switch to the process buffer."
- (interactive)
- (lisp-compile-defun t))
-
-;;; A version of the form in H. Shevis' soar-mode.el package. Less robust.
-;(defun lisp-compile-sexp (start end)
-; "Compile the s-expression bounded by START and END in the inferior lisp.
-;If the sexp isn't a DEFUN form, it is evaluated instead."
-; (cond ((looking-at "(defun\\s +")
-; (goto-char (match-end 0))
-; (let ((name-start (point)))
-; (forward-sexp 1)
-; (process-send-string "cmulisp" (format "(compile '%s #'(lambda "
-; (buffer-substring name-start
-; (point)))))
-; (let ((body-start (point)))
-; (goto-char start) (forward-sexp 1) ; Can't use end-of-defun.
-; (process-send-region "cmulisp" (buffer-substring body-start (point))))
-; (process-send-string "cmulisp" ")\n"))
-; (t (lisp-eval-region start end)))))
-;
-;(defun lisp-compile-region (start end)
-; "Each s-expression in the current region is compiled (if a DEFUN)
-;or evaluated (if not) in the inferior lisp."
-; (interactive "r")
-; (save-excursion
-; (goto-char start) (end-of-defun) (beginning-of-defun) ; error check
-; (if (< (point) start) (error "region begins in middle of defun"))
-; (goto-char start)
-; (let ((s start))
-; (end-of-defun)
-; (while (<= (point) end) ; Zip through
-; (lisp-compile-sexp s (point)) ; compiling up defun-sized chunks.
-; (setq s (point))
-; (end-of-defun))
-; (if (< s end) (lisp-compile-sexp s end)))))
-;;;
-;;; End of HS-style code
-
-
-(defvar lisp-prev-l/c-dir/file nil
- "Saves the (directory . file) pair used in the last lisp-load-file or
-lisp-compile-file command. Used for determining the default in the
-next one.")
-
-(defvar lisp-source-modes '(lisp-mode)
- "*Used to determine if a buffer contains Lisp source code.
-If it's loaded into a buffer that is in one of these major modes, it's
-considered a Lisp source file by lisp-load-file and lisp-compile-file.
-Used by these commands to determine defaults.")
-
-(defun lisp-load-file (file-name)
- "Load a Lisp file into the inferior Lisp process."
- (interactive (comint-get-source "Load Lisp file: " lisp-prev-l/c-dir/file
- lisp-source-modes nil)) ; NIL because LOAD
- ; doesn't need an exact name
- (comint-check-source file-name) ; Check to see if buffer needs saved.
- (setq lisp-prev-l/c-dir/file (cons (file-name-directory file-name)
- (file-name-nondirectory file-name)))
- (comint-send-string (cmulisp-proc)
- (format inferior-lisp-load-command file-name))
- (switch-to-lisp t))
-
-
-(defun lisp-compile-file (file-name)
- "Compile a Lisp file in the inferior Lisp process."
- (interactive (comint-get-source "Compile Lisp file: " lisp-prev-l/c-dir/file
- lisp-source-modes nil)) ; NIL = don't need
- ; suffix .lisp
- (comint-check-source file-name) ; Check to see if buffer needs saved.
- (setq lisp-prev-l/c-dir/file (cons (file-name-directory file-name)
- (file-name-nondirectory file-name)))
- (comint-send-string (cmulisp-proc) (concat "(compile-file \""
- file-name
- "\"\)\n"))
- (switch-to-lisp t))
-
-
-
-;;; Documentation functions: function doc, var doc, arglist, and
-;;; describe symbol.
-;;; ===========================================================================
-
-;;; Command strings
-;;; ===============
-
-(defvar lisp-function-doc-command
- "(let ((fn '%s))
- (format t \"Documentation for ~a:~&~a\"
- fn (documentation fn 'function))
- (values))\n"
- "Command to query inferior Lisp for a function's documentation.")
-
-(defvar lisp-var-doc-command
- "(let ((v '%s))
- (format t \"Documentation for ~a:~&~a\"
- v (documentation v 'variable))
- (values))\n"
- "Command to query inferior Lisp for a variable's documentation.")
-
-(defvar lisp-arglist-command
- "(let ((fn '%s))
- (format t \"Arglist for ~a: ~a\" fn (arglist fn))
- (values))\n"
- "Command to query inferior Lisp for a function's arglist.")
-
-(defvar lisp-describe-sym-command
- "(describe '%s)\n"
- "Command to query inferior Lisp for a variable's documentation.")
-
-
-;;; Ancillary functions
-;;; ===================
-
-;;; Reads a string from the user.
-(defun lisp-symprompt (prompt default)
- (list (let* ((prompt (if default
- (format "%s (default %s): " prompt default)
- (concat prompt ": ")))
- (ans (read-string prompt)))
- (if (zerop (length ans)) default ans))))
-
-
-;;; Adapted from function-called-at-point in help.el.
-(defun lisp-fn-called-at-pt ()
- "Returns the name of the function called in the current call.
-Nil if it can't find one."
- (condition-case nil
- (save-excursion
- (save-restriction
- (narrow-to-region (max (point-min) (- (point) 1000)) (point-max))
- (backward-up-list 1)
- (forward-char 1)
- (let ((obj (read (current-buffer))))
- (and (symbolp obj) obj))))
- (error nil)))
-
-
-;;; Adapted from variable-at-point in help.el.
-(defun lisp-var-at-pt ()
- (condition-case ()
- (save-excursion
- (forward-sexp -1)
- (skip-chars-forward "'")
- (let ((obj (read (current-buffer))))
- (and (symbolp obj) obj)))
- (error nil)))
-
-
-;;; Documentation functions: fn and var doc, arglist, and symbol describe.
-;;; ======================================================================
-
-(defun lisp-show-function-documentation (fn)
- "Send a command to the inferior Lisp to give documentation for function FN.
-See variable lisp-function-doc-command."
- (interactive (lisp-symprompt "Function doc" (lisp-fn-called-at-pt)))
- (comint-proc-query (cmulisp-proc) (format lisp-function-doc-command fn)))
-
-(defun lisp-show-variable-documentation (var)
- "Send a command to the inferior Lisp to give documentation for function FN.
-See variable lisp-var-doc-command."
- (interactive (lisp-symprompt "Variable doc" (lisp-var-at-pt)))
- (comint-proc-query (cmulisp-proc) (format lisp-var-doc-command var)))
-
-(defun lisp-show-arglist (fn)
- "Sends an query to the inferior Lisp for the arglist for function FN.
-See variable lisp-arglist-command."
- (interactive (lisp-symprompt "Arglist" (lisp-fn-called-at-pt)))
- (comint-proc-query (cmulisp-proc) (format lisp-arglist-command fn)))
-
-(defun lisp-describe-sym (sym)
- "Send a command to the inferior Lisp to describe symbol SYM.
-See variable lisp-describe-sym-command."
- (interactive (lisp-symprompt "Describe" (lisp-var-at-pt)))
- (comint-proc-query (cmulisp-proc) (format lisp-describe-sym-command sym)))
-
-
-(defvar cmulisp-buffer nil "*The current cmulisp process buffer.
-
-MULTIPLE PROCESS SUPPORT
-===========================================================================
-Cmulisp.el supports, in a fairly simple fashion, running multiple Lisp
-processes. To run multiple Lisp processes, you start the first up with
-\\[cmulisp]. It will be in a buffer named *cmulisp*. Rename this buffer
-with \\[rename-buffer]. You may now start up a new process with another
-\\[cmulisp]. It will be in a new buffer, named *cmulisp*. You can
-switch between the different process buffers with \\[switch-to-buffer].
-
-Commands that send text from source buffers to Lisp processes --
-like lisp-eval-defun or lisp-show-arglist -- have to choose a process
-to send to, when you have more than one Lisp process around. This
-is determined by the global variable cmulisp-buffer. Suppose you
-have three inferior lisps running:
- Buffer Process
- foo cmulisp
- bar cmulisp<2>
- *cmulisp* cmulisp<3>
-If you do a \\[lisp-eval-defun] command on some Lisp source code,
-what process do you send it to?
-
-- If you're in a process buffer (foo, bar, or *cmulisp*),
- you send it to that process.
-- If you're in some other buffer (e.g., a source file), you
- send it to the process attached to buffer cmulisp-buffer.
-This process selection is performed by function cmulisp-proc.
-
-Whenever \\[cmulisp] fires up a new process, it resets cmulisp-buffer
-to be the new process's buffer. If you only run one process, this will
-do the right thing. If you run multiple processes, you can change
-cmulisp-buffer to another process buffer with \\[set-variable].
-
-More sophisticated approaches are, of course, possible. If you find yourself
-needing to switch back and forth between multiple processes frequently,
-you may wish to consider ilisp.el, a larger, more sophisticated package
-for running inferior Lisp processes. The approach taken here is for a
-minimal, simple implementation. Feel free to extend it.")
-
-(defun cmulisp-proc ()
- "Returns the current cmulisp process. See variable cmulisp-buffer."
- (let ((proc (get-buffer-process (if (eq major-mode 'inferior-lisp-mode)
- (current-buffer)
- cmulisp-buffer))))
- (or proc
- (error "No current process. See variable cmulisp-buffer"))))
-
-
-;;; Do the user's customisation...
-;;;===============================
-(defvar cmulisp-load-hook nil
- "This hook is run when cmulisp is loaded in.
-This is a good place to put keybindings.")
-
-(run-hooks 'cmulisp-load-hook)
-
-;;; CHANGE LOG
-;;; ===========================================================================
-;;; 5/24/90 Olin
-;;; - Split cmulisp and cmushell modes into separate files.
-;;; Not only is this a good idea, it's apparently the way it'll be rel 19.
-;;; - Upgraded process sends to use comint-send-string instead of
-;;; process-send-string.
-;;; - Explicit references to process "cmulisp" have been replaced with
-;;; (cmulisp-proc). This allows better handling of multiple process bufs.
-;;; - Added process query and var/function/symbol documentation
-;;; commands. Based on code written by Douglas Roberts.
-;;; - Added lisp-eval-last-sexp, bound to C-x C-e.
-;;;
-;;; 9/20/90 Olin
-;;; Added a save-restriction to lisp-fn-called-at-pt. This bug and fix
-;;; reported by Lennart Staflin.
-;;;
-;;; 3/12/90 Olin
-;;; - lisp-load-file and lisp-compile-file no longer switch-to-lisp.
-;;; Tale suggested this.
-;;; - Reversed this decision 7/15/91. You need the visual feedback.
-;;;
-;;; 7/25/91 Olin
-;;; Changed all keybindings of the form C-c <letter>. These are
-;;; supposed to be reserved for the user to bind. This affected
-;;; mainly the compile/eval-defun/region[-and-go] commands.
-;;; This was painful, but necessary to adhere to the gnumacs standard.
-;;; For some backwards compatibility, see the
-;;; cmulisp-install-letter-bindings
-;;; function.
-;;;
-;;; 8/2/91 Olin
-;;; - The lisp-compile/eval-defun/region commands now take a prefix arg,
-;;; which means switch-to-lisp after sending the text to the Lisp process.
-;;; This obsoletes all the -and-go commands. The -and-go commands are
-;;; kept around for historical reasons, and because the user can bind
-;;; them to key sequences shorter than C-u C-c C-<letter>.
-;;; - If M-x cmulisp is invoked with a prefix arg, it allows you to
-;;; edit the command line.
-
-(provide 'cmulisp)
-
-;;; cmulisp.el ends here