mirror of
https://git.savannah.gnu.org/git/emacs.git
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7b02ee3c41
lisp-mode-variables with no arg. (cmulisp-mode-map): Use shared-lisp-mode-map as tail. (cmulisp-args-to-list): Fix typo in recursive call. (cmulisp-buffer): Define variable.
684 lines
28 KiB
EmacsLisp
684 lines
28 KiB
EmacsLisp
;;; cmulisp.el --- improved version of standard inferior-lisp mode
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;;; Copyright Olin Shivers (1988).
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;;; Please imagine a long, tedious, legalistic 5-page gnu-style copyright
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;;; notice appearing here to the effect that you may use this code any
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;;; way you like, as long as you don't charge money for it, remove this
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;;; notice, or hold me liable for its results.
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;;; This replaces the standard inferior-lisp mode.
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;;; Hacked from tea.el by Olin Shivers (shivers@cs.cmu.edu). 8/88
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;;; Please send me bug reports, bug fixes, and extensions, so that I can
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;;; merge them into the master source.
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;;;
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;;; Change log at end of file.
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;;; This file defines a a lisp-in-a-buffer package (cmulisp mode) built on top
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;;; of comint mode. Cmulisp mode is similar to, and intended to replace, its
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;;; counterpart in the standard gnu emacs release. This replacements is more
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;;; featureful, robust, and uniform than the released version. The key
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;;; bindings are also more compatible with the bindings of Hemlock and Zwei
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;;; (the Lisp Machine emacs).
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;;; Since this mode is built on top of the general command-interpreter-in-
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;;; a-buffer mode (comint mode), it shares a common base functionality,
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;;; and a common set of bindings, with all modes derived from comint mode.
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;;; This makes these modes easier to use.
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;;; For documentation on the functionality provided by comint mode, and
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;;; the hooks available for customising it, see the file comint.el.
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;;; For further information on cmulisp mode, see the comments below.
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;;; Needs fixin:
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;;; The load-file/compile-file default mechanism could be smarter -- it
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;;; doesn't know about the relationship between filename extensions and
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;;; whether the file is source or executable. If you compile foo.lisp
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;;; with compile-file, then the next load-file should use foo.bin for
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;;; the default, not foo.lisp. This is tricky to do right, particularly
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;;; because the extension for executable files varies so much (.o, .bin,
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;;; .lbin, .mo, .vo, .ao, ...).
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;;;
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;;; It would be nice if cmulisp (and inferior scheme, T, ...) modes
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;;; had a verbose minor mode wherein sending or compiling defuns, etc.
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;;; would be reflected in the transcript with suitable comments, e.g.
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;;; ";;; redefining fact". Several ways to do this. Which is right?
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;;;
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;;; When sending text from a source file to a subprocess, the process-mark can
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;;; move off the window, so you can lose sight of the process interactions.
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;;; Maybe I should ensure the process mark is in the window when I send
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;;; text to the process? Switch selectable?
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(require 'comint)
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;; YOUR .EMACS FILE
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;;=============================================================================
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;; Some suggestions for your .emacs file.
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;;
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;; ; If cmulisp lives in some non-standard directory, you must tell emacs
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;; ; where to get it. This may or may not be necessary.
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;; (setq load-path (cons (expand-file-name "~jones/lib/emacs") load-path))
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;;
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;; ; Autoload cmulisp from file cmulisp.el
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;; (autoload 'cmulisp "cmulisp"
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;; "Run an inferior Lisp process."
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;; t)
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;;
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;; ; Define C-c t to run my favorite command in cmulisp mode:
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;; (setq cmulisp-load-hook
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;; '((lambda ()
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;; (define-key cmulisp-mode-map "\C-ct" 'favorite-cmd))))
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;;; Brief Command Documentation:
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;;;============================================================================
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;;; Comint Mode Commands: (common to cmulisp and all comint-derived modes)
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;;;
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;;; m-p comint-previous-input Cycle backwards in input history
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;;; m-n comint-next-input Cycle forwards
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;;; m-c-r comint-previous-input-matching Search backwards in input history
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;;; return comint-send-input
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;;; c-a comint-bol Beginning of line; skip prompt.
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;;; c-d comint-delchar-or-maybe-eof Delete char unless at end of buff.
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;;; c-c c-u comint-kill-input ^u
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;;; c-c c-w backward-kill-word ^w
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;;; c-c c-c comint-interrupt-subjob ^c
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;;; c-c c-z comint-stop-subjob ^z
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;;; c-c c-\ comint-quit-subjob ^\
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;;; c-c c-o comint-kill-output Delete last batch of process output
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;;; c-c c-r comint-show-output Show last batch of process output
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;;; send-invisible Read line w/o echo & send to proc
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;;; comint-continue-subjob Useful if you accidentally suspend
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;;; top-level job.
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;;; comint-mode-hook is the comint mode hook.
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;;; CMU Lisp Mode Commands:
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;;; c-m-x lisp-send-defun This binding is a gnu convention.
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;;; c-c c-l lisp-load-file Prompt for file name; tell Lisp to load it.
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;;; c-c c-k lisp-compile-file Prompt for file name; tell Lisp to kompile it.
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;;; Filename completion is available, of course.
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;;;
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;;; Additionally, these commands are added to the key bindings of Lisp mode:
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;;; c-m-x lisp-eval-defun This binding is a gnu convention.
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;;; c-c c-e lisp-eval-defun Send the current defun to Lisp process.
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;;; c-x c-e lisp-eval-last-sexp Send the previous sexp to Lisp process.
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;;; c-c c-r lisp-eval-region Send the current region to Lisp process.
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;;; c-c c-c lisp-compile-defun Compile the current defun in Lisp process.
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;;; c-c c-z switch-to-lisp Switch to the Lisp process buffer.
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;;; c-c c-l lisp-load-file (See above. In a Lisp file buffer, default
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;;; c-c c-k lisp-compile-file is to load/compile the current file.)
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;;; c-c c-d lisp-describe-sym Query Lisp for a symbol's description.
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;;; c-c c-a lisp-show-arglist Query Lisp for function's arglist.
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;;; c-c c-f lisp-show-function-documentation Query Lisp for a function's doc.
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;;; c-c c-v lisp-show-variable-documentation Query Lisp for a variable's doc.
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;;; cmulisp Fires up the Lisp process.
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;;; lisp-compile-region Compile all forms in the current region.
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;;;
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;;; CMU Lisp Mode Variables:
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;;; cmulisp-filter-regexp Match this => don't get saved on input hist
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;;; inferior-lisp-program Name of Lisp program run-lisp executes
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;;; inferior-lisp-load-command Customises lisp-load-file
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;;; cmulisp-mode-hook
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;;; inferior-lisp-prompt Initialises comint-prompt-regexp.
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;;; Backwards compatibility.
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;;; lisp-source-modes Anything loaded into a buffer that's in
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;;; one of these modes is considered Lisp
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;;; source by lisp-load/compile-file.
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;;; Read the rest of this file for more information.
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(defvar cmulisp-filter-regexp "\\`\\s *\\(:\\(\\w\\|\\s_\\)\\)?\\s *\\'"
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"*What not to save on inferior Lisp's input history
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Input matching this regexp is not saved on the input history in cmulisp
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mode. Default is whitespace followed by 0 or 1 single-letter :keyword
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(as in :a, :c, etc.)")
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(defvar cmulisp-mode-map nil)
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(cond ((not cmulisp-mode-map)
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(setq cmulisp-mode-map
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(nconc (full-copy-sparse-keymap comint-mode-map)
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shared-lisp-mode-map))
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(define-key cmulisp-mode-map "\C-x\C-e" 'lisp-eval-last-sexp)
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(define-key cmulisp-mode-map "\C-c\C-l" 'lisp-load-file)
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(define-key cmulisp-mode-map "\C-c\C-k" 'lisp-compile-file)
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(define-key cmulisp-mode-map "\C-c\C-a" 'lisp-show-arglist)
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(define-key cmulisp-mode-map "\C-c\C-d" 'lisp-describe-sym)
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(define-key cmulisp-mode-map "\C-c\C-f" 'lisp-show-function-documentation)
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(define-key cmulisp-mode-map "\C-c\C-v" 'lisp-show-variable-documentation)))
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;;; These commands augment Lisp mode, so you can process Lisp code in
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;;; the source files.
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(define-key lisp-mode-map "\M-\C-x" 'lisp-eval-defun) ; Gnu convention
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(define-key lisp-mode-map "\C-x\C-e" 'lisp-eval-last-sexp) ; Gnu convention
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(define-key lisp-mode-map "\C-c\C-e" 'lisp-eval-defun)
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(define-key lisp-mode-map "\C-c\C-r" 'lisp-eval-region)
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(define-key lisp-mode-map "\C-c\C-c" 'lisp-compile-defun)
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(define-key lisp-mode-map "\C-c\C-z" 'switch-to-lisp)
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(define-key lisp-mode-map "\C-c\C-l" 'lisp-load-file)
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(define-key lisp-mode-map "\C-c\C-k" 'lisp-compile-file) ; "kompile" file
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(define-key lisp-mode-map "\C-c\C-a" 'lisp-show-arglist)
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(define-key lisp-mode-map "\C-c\C-d" 'lisp-describe-sym)
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(define-key lisp-mode-map "\C-c\C-f" 'lisp-show-function-documentation)
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(define-key lisp-mode-map "\C-c\C-v" 'lisp-show-variable-documentation)
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(defvar cmulisp-buffer)
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;;; This function exists for backwards compatibility.
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;;; Previous versions of this package bound commands to C-c <letter>
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;;; bindings, which is not allowed by the gnumacs standard.
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(defun cmulisp-install-letter-bindings ()
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"This function binds many cmulisp commands to C-c <letter> bindings,
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where they are more accessible. C-c <letter> bindings are reserved for the
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user, so these bindings are non-standard. If you want them, you should
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have this function called by the cmulisp-load-hook:
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(setq cmulisp-load-hook '(cmulisp-install-letter-bindings))
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You can modify this function to install just the bindings you want."
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(define-key lisp-mode-map "\C-ce" 'lisp-eval-defun-and-go)
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(define-key lisp-mode-map "\C-cr" 'lisp-eval-region-and-go)
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(define-key lisp-mode-map "\C-cc" 'lisp-compile-defun-and-go)
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(define-key lisp-mode-map "\C-cz" 'switch-to-lisp)
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(define-key lisp-mode-map "\C-cl" 'lisp-load-file)
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(define-key lisp-mode-map "\C-ck" 'lisp-compile-file)
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(define-key lisp-mode-map "\C-ca" 'lisp-show-arglist)
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(define-key lisp-mode-map "\C-cd" 'lisp-describe-sym)
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(define-key lisp-mode-map "\C-cf" 'lisp-show-function-documentation)
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(define-key lisp-mode-map "\C-cv" 'lisp-show-variable-documentation)
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(define-key cmulisp-mode-map "\C-cl" 'lisp-load-file)
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(define-key cmulisp-mode-map "\C-ck" 'lisp-compile-file)
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(define-key cmulisp-mode-map "\C-ca" 'lisp-show-arglist)
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(define-key cmulisp-mode-map "\C-cd" 'lisp-describe-sym)
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(define-key cmulisp-mode-map "\C-cf" 'lisp-show-function-documentation)
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(define-key cmulisp-mode-map "\C-cv" 'lisp-show-variable-documentation))
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(defvar inferior-lisp-program "lisp"
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"*Program name for invoking an inferior Lisp with `cmulisp'.")
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(defvar inferior-lisp-load-command "(load \"%s\")\n"
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"*Format-string for building a Lisp expression to load a file.
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This format string should use %s to substitute a file name
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and should result in a Lisp expression that will command the inferior Lisp
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to load that file. The default works acceptably on most Lisps.
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The string \"(progn (load \\\"%s\\\" :verbose nil :print t) (values))\\\n\"
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produces cosmetically superior output for this application,
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but it works only in Common Lisp.")
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(defvar inferior-lisp-prompt "^[^> ]*>+:? *"
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"Regexp to recognise prompts in the inferior Lisp.
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Defaults to \"^[^> ]*>+:? *\", which works pretty good for Lucid, kcl,
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and franz. This variable is used to initialise comint-prompt-regexp in the
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cmulisp buffer.
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More precise choices:
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Lucid Common Lisp: \"^\\(>\\|\\(->\\)+\\) *\"
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franz: \"^\\(->\\|<[0-9]*>:\\) *\"
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kcl: \"^>+ *\"
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This is a fine thing to set in your .emacs file.")
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(defvar cmulisp-mode-hook '()
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"*Hook for customising cmulisp mode")
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(defun cmulisp-mode ()
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"Major mode for interacting with an inferior Lisp process.
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Runs a Lisp interpreter as a subprocess of Emacs, with Lisp I/O through an
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Emacs buffer. Variable inferior-lisp-program controls which Lisp interpreter
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is run. Variables inferior-lisp-prompt, cmulisp-filter-regexp and
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inferior-lisp-load-command can customize this mode for different Lisp
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interpreters.
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For information on running multiple processes in multiple buffers, see
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documentation for variable cmulisp-buffer.
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\\{cmulisp-mode-map}
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Customisation: Entry to this mode runs the hooks on comint-mode-hook and
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cmulisp-mode-hook (in that order).
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You can send text to the inferior Lisp process from other buffers containing
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Lisp source.
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switch-to-lisp switches the current buffer to the Lisp process buffer.
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lisp-eval-defun sends the current defun to the Lisp process.
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lisp-compile-defun compiles the current defun.
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lisp-eval-region sends the current region to the Lisp process.
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lisp-compile-region compiles the current region.
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Prefixing the lisp-eval/compile-defun/region commands with
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a \\[universal-argument] causes a switch to the Lisp process buffer after sending
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the text.
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Commands:
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Return after the end of the process' output sends the text from the
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end of process to point.
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Return before the end of the process' output copies the sexp ending at point
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to the end of the process' output, and sends it.
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Delete converts tabs to spaces as it moves back.
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Tab indents for Lisp; with argument, shifts rest
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of expression rigidly with the current line.
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C-M-q does Tab on each line starting within following expression.
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Paragraphs are separated only by blank lines. Semicolons start comments.
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If you accidentally suspend your process, use \\[comint-continue-subjob]
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to continue it."
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(interactive)
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(comint-mode)
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(setq comint-prompt-regexp inferior-lisp-prompt)
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(setq major-mode 'cmulisp-mode)
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(setq mode-name "CMU Lisp")
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(setq mode-line-process '(": %s"))
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(lisp-mode-variables t)
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(use-local-map cmulisp-mode-map) ;c-c c-k for "kompile" file
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(setq comint-get-old-input (function lisp-get-old-input))
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(setq comint-input-filter (function lisp-input-filter))
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(setq comint-input-sentinel 'ignore)
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(run-hooks 'cmulisp-mode-hook))
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(defun lisp-get-old-input ()
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"Snarf the sexp ending at point"
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(save-excursion
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(let ((end (point)))
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(backward-sexp)
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(buffer-substring (point) end))))
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(defun lisp-input-filter (str)
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"Don't save anything matching cmulisp-filter-regexp"
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(not (string-match cmulisp-filter-regexp str)))
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(defun cmulisp (cmd)
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"Run an inferior Lisp process, input and output via buffer *cmulisp*.
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If there is a process already running in *cmulisp*, just switch to that buffer.
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With argument, allows you to edit the command line (default is value
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of inferior-lisp-program). Runs the hooks from cmulisp-mode-hook (after the
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comint-mode-hook is run).
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\(Type \\[describe-mode] in the process buffer for a list of commands.)"
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(interactive (list (if current-prefix-arg
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(read-string "Run lisp: " inferior-lisp-program)
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inferior-lisp-program)))
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(if (not (comint-check-proc "*cmulisp*"))
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(let ((cmdlist (cmulisp-args-to-list cmd)))
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(set-buffer (apply (function make-comint) "cmulisp" (car cmdlist) nil
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(cdr cmdlist)))
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(cmulisp-mode)))
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(setq cmulisp-buffer "*cmulisp*")
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(switch-to-buffer "*cmulisp*"))
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;;; Break a string up into a list of arguments.
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;;; This will break if you have an argument with whitespace, as in
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;;; string = "-ab +c -x 'you lose'".
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(defun cmulisp-args-to-list (string)
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(let ((where (string-match "[ \t]" string)))
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(cond ((null where) (list string))
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((not (= where 0))
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(cons (substring string 0 where)
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(tea-args-to-list (substring string (+ 1 where)
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(length string)))))
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(t (let ((pos (string-match "[^ \t]" string)))
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(if (null pos)
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nil
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(cmulisp-args-to-list (substring string pos
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(length string)))))))))
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(defun lisp-eval-region (start end &optional and-go)
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"Send the current region to the inferior Lisp process.
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Prefix argument means switch-to-lisp afterwards."
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(interactive "r\nP")
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(comint-send-region (cmulisp-proc) start end)
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(comint-send-string (cmulisp-proc) "\n")
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(if and-go (switch-to-lisp t)))
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(defun lisp-eval-defun (&optional and-go)
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"Send the current defun to the inferior Lisp process.
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Prefix argument means switch-to-lisp afterwards."
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(interactive "P")
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(save-excursion
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(end-of-defun)
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(skip-chars-backward " \t\n\r\f") ; Makes allegro happy
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(let ((end (point)))
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(beginning-of-defun)
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(lisp-eval-region (point) end)))
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(if and-go (switch-to-lisp t)))
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(defun lisp-eval-last-sexp (&optional and-go)
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"Send the previous sexp to the inferior Lisp process.
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Prefix argument means switch-to-lisp afterwards."
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(interactive "P")
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(lisp-eval-region (save-excursion (backward-sexp) (point)) (point) and-go))
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;;; Common Lisp COMPILE sux.
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(defun lisp-compile-region (start end &optional and-go)
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"Compile the current region in the inferior Lisp process.
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Prefix argument means switch-to-lisp afterwards."
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(interactive "r\nP")
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(comint-send-string (cmulisp-proc)
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(format "(funcall (compile nil `(lambda () (progn 'compile %s))))\n"
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(buffer-substring start end)))
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(if and-go (switch-to-lisp t)))
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(defun lisp-compile-defun (&optional and-go)
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"Compile the current defun in the inferior Lisp process.
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Prefix argument means switch-to-lisp afterwards."
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(interactive "P")
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(save-excursion
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(end-of-defun)
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(skip-chars-backward " \t\n\r\f") ; Makes allegro happy
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(let ((e (point)))
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(beginning-of-defun)
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(lisp-compile-region (point) e)))
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(if and-go (switch-to-lisp t)))
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(defun switch-to-lisp (eob-p)
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"Switch to the inferior Lisp process buffer.
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With argument, positions cursor at end of buffer."
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(interactive "P")
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(if (get-buffer cmulisp-buffer)
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(pop-to-buffer cmulisp-buffer)
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(error "No current process buffer. See variable cmulisp-buffer."))
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(cond (eob-p
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(push-mark)
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(goto-char (point-max)))))
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||
;;; 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 youself
|
||
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
|