595 lines
25 KiB
EmacsLisp
595 lines
25 KiB
EmacsLisp
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;;; -*-Emacs-Lisp-*- General command interpreter in a window stuff
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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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;;; The changelog is at the end of file.
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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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;;; - Olin Shivers (shivers@cs.cmu.edu)
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;;; This file defines a a shell-in-a-buffer package (cmushell mode) built on
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;;; top of comint mode. Cmushell mode is similar to, and intended to replace,
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;;; its counterpart in the standard gnu emacs release. This replacement is
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;;; more featureful, robust, and uniform than the released version.
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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 cmushell mode, see the comments below.
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;;; Needs fixin:
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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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(provide 'cmushell)
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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 cmushell 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 cmushell from file cmushell.el
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;; (autoload 'cmushell "cmushell"
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;; "Run an inferior shell process."
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;; t)
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;;
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;; ; Define C-c C-t to run my favorite command in cmushell mode:
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;; (setq cmushell-load-hook
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;; '((lambda ()
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;; (define-key cmushell-mode-map "\C-c\C-t" 'favorite-cmd))))
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;;; Brief Command Documentation:
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;;;============================================================================
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;;; Comint Mode Commands: (common to cmushell 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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;;; c-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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;;; Shell Mode Commands:
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;;; cmushell Fires up the shell process.
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;;; tab comint-dynamic-complete Complete a partial file name
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;;; m-? comint-dynamic-list-completions List completions in help buffer
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;;; dirs Resync the buffer's dir stack.
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;;; dirtrack-toggle Turn dir tracking on/off.
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;;;
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;;; The cmushell mode hook is cmushell-mode-hook
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;;; The cmushell-load-hook is run after this file is loaded.
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;;; comint-prompt-regexp is initialised to shell-prompt-pattern, for backwards
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;;; compatibility.
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;;; Read the rest of this file for more information.
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;;; SHELL.EL COMPATIBILITY
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;;;============================================================================
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;;; In brief: this package should have no trouble coexisting with shell.el.
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;;;
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;;; Most customising variables -- e.g., explicit-shell-file-name -- are the
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;;; same, so the users shouldn't have much trouble. Hooks have different
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;;; names, however, so you can customise shell mode differently from cmushell
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;;; mode. You basically just have to remember to type M-x cmushell instead of
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;;; M-x shell.
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;;;
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;;; It would be nice if this file was completely plug-compatible with the old
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;;; shell package -- if you could just name this file shell.el, and have it
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;;; transparently replace the old one. But you can't. Several other packages
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;;; (tex-mode, background, dbx, gdb, kermit, monkey, prolog, telnet) are also
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;;; clients of shell mode. These packages assume detailed knowledge of shell
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;;; mode internals in ways that are incompatible with cmushell mode (mostly
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;;; because of cmushell mode's greater functionality). So, unless we are
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;;; willing to port all of these packages, we can't have this file be a
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;;; complete replacement for shell.el -- that is, we can't name this file
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;;; shell.el, and its main entry point (shell), because dbx.el will break
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;;; when it loads it in and tries to use it.
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;;;
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;;; There are two ways to fix this. One: rewrite these other modes to use the
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;;; new package. This is a win, but can't be assumed. The other, backwards
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;;; compatible route, is to make this package non-conflict with shell.el, so
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;;; both files can be loaded in at the same time. And *that* is why some
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;;; functions and variables have different names: (cmushell),
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;;; cmushell-mode-map, that sort of thing. All the names have been carefully
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;;; chosen so that shell.el and cmushell.el won't tromp on each other.
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;;; Customisation and Buffer Variables
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;;; ===========================================================================
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;;;
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;In loaddefs.el now.
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;(defconst shell-prompt-pattern
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; "^[^#$%>]*[#$%>] *"
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; "*Regexp used by Newline command to match subshell prompts.
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;;; Change the doc string for shell-prompt-pattern:
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(put 'shell-prompt-pattern 'variable-documentation
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"Regexp to match prompts in the inferior shell.
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Defaults to \"^[^#$%>]*[#$%>] *\", which works pretty well.
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This variable is used to initialise comint-prompt-regexp in the
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shell buffer.
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This is a fine thing to set in your .emacs file.")
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(defvar shell-popd-regexp "popd"
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"*Regexp to match subshell commands equivalent to popd.")
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(defvar shell-pushd-regexp "pushd"
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"*Regexp to match subshell commands equivalent to pushd.")
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(defvar shell-cd-regexp "cd"
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"*Regexp to match subshell commands equivalent to cd.")
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(defvar explicit-shell-file-name nil
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"*If non-nil, is file name to use for explicitly requested inferior shell.")
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(defvar explicit-csh-args
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(if (eq system-type 'hpux)
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;; -T persuades HP's csh not to think it is smarter
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;; than us about what terminal modes to use.
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'("-i" "-T")
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'("-i"))
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"*Args passed to inferior shell by M-x cmushell, if the shell is csh.
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Value is a list of strings, which may be nil.")
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;;; All the above vars aren't prefixed "cmushell-" to make them
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;;; backwards compatible w/shell.el and old .emacs files.
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(defvar cmushell-dirstack nil
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"List of directories saved by pushd in this buffer's shell.")
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(defvar cmushell-dirstack-query "dirs"
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"Command used by shell-resync-dirlist to query shell.")
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(defvar cmushell-mode-map '())
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(cond ((not cmushell-mode-map)
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(setq cmushell-mode-map (full-copy-sparse-keymap comint-mode-map))
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(define-key cmushell-mode-map "\t" 'comint-dynamic-complete)
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(define-key cmushell-mode-map "\M-?" 'comint-dynamic-list-completions)))
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(defvar cmushell-mode-hook '()
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"*Hook for customising cmushell mode")
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;;; Basic Procedures
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;;; ===========================================================================
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;;;
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(defun cmushell-mode ()
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"Major mode for interacting with an inferior shell.
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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 the end of the current line.
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Return before end of process output copies rest of line to end (skipping
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the prompt) and sends it.
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M-x send-invisible reads a line of text without echoing it, and sends it to
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the shell.
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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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cd, pushd and popd commands given to the shell are watched by Emacs to keep
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this buffer's default directory the same as the shell's working directory.
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M-x dirs queries the shell and resyncs Emacs' idea of what the current
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directory stack is.
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M-x dirtrack-toggle turns directory tracking on and off.
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\\{cmushell-mode-map}
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Customisation: Entry to this mode runs the hooks on comint-mode-hook and
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cmushell-mode-hook (in that order).
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Variables shell-cd-regexp, shell-pushd-regexp and shell-popd-regexp are used
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to match their respective commands."
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(interactive)
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(comint-mode)
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(setq comint-prompt-regexp shell-prompt-pattern)
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(setq major-mode 'cmushell-mode)
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(setq mode-name "CMU shell")
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(use-local-map cmushell-mode-map)
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(make-local-variable 'cmushell-dirstack)
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(setq cmushell-dirstack nil)
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(make-local-variable 'cmushell-dirtrackp)
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(setq cmushell-dirtrackp t)
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(setq comint-input-sentinel 'cmushell-directory-tracker)
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(run-hooks 'cmushell-mode-hook))
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(defun cmushell ()
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"Run an inferior shell, with I/O through buffer *cmushell*.
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If buffer exists but shell process is not running, make new shell.
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If buffer exists and shell process is running,
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just switch to buffer *cmushell*.
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Program used comes from variable explicit-shell-file-name,
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or (if that is nil) from the ESHELL environment variable,
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or else from SHELL if there is no ESHELL.
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If a file ~/.emacs_SHELLNAME exists, it is given as initial input
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(Note that this may lose due to a timing error if the shell
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discards input when it starts up.)
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The buffer is put in cmushell-mode, giving commands for sending input
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and controlling the subjobs of the shell. See cmushell-mode.
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See also variable shell-prompt-pattern.
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The shell file name (sans directories) is used to make a symbol name
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such as `explicit-csh-arguments'. If that symbol is a variable,
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its value is used as a list of arguments when invoking the shell.
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Otherwise, one argument `-i' is passed to the shell.
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\(Type \\[describe-mode] in the shell buffer for a list of commands.)"
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(interactive)
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(let ((buffer-name (concat "*" cmushell-buffer-base-name "*")))
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(cond ((not (comint-check-proc buffer-name))
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(let* ((prog (or explicit-shell-file-name
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(getenv "ESHELL")
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(getenv "SHELL")
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"/bin/sh"))
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(name (file-name-nondirectory prog))
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(startfile (concat "~/.emacs_" name))
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(xargs-name (intern-soft (concat "explicit-" name "-args"))))
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(set-buffer (apply 'make-comint cmushell-buffer-base-name prog
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(if (file-exists-p startfile) startfile)
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(if (and xargs-name (boundp xargs-name))
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(symbol-value xargs-name)
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'("-i"))))
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(cmushell-mode))))
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(switch-to-buffer buffer-name)))
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(defvar cmushell-buffer-base-name "cmushell"
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"Name of buffer in which CMU shell is to run.")
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;;; Directory tracking
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;;; ===========================================================================
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;;; This code provides the cmushell mode input sentinel
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;;; CMUSHELL-DIRECTORY-TRACKER
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;;; that tracks cd, pushd, and popd commands issued to the shell, and
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;;; changes the current directory of the shell buffer accordingly.
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;;;
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;;; This is basically a fragile hack, although it's more accurate than
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;;; the released version in shell.el. It has the following failings:
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;;; 1. It doesn't know about the cdpath shell variable.
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;;; 2. It only spots the first command in a command sequence. E.g., it will
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;;; miss the cd in "ls; cd foo"
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;;; 3. More generally, any complex command (like ";" sequencing) is going to
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;;; throw it. Otherwise, you'd have to build an entire shell interpreter in
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;;; emacs lisp. Failing that, there's no way to catch shell commands where
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;;; cd's are buried inside conditional expressions, aliases, and so forth.
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;;;
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;;; The whole approach is a crock. Shell aliases mess it up. File sourcing
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;;; messes it up. You run other processes under the shell; these each have
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;;; separate working directories, and some have commands for manipulating
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;;; their w.d.'s (e.g., the lcd command in ftp). Some of these programs have
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;;; commands that do *not* affect the current w.d. at all, but look like they
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;;; do (e.g., the cd command in ftp). In shells that allow you job
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;;; control, you can switch between jobs, all having different w.d.'s. So
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;;; simply saying %3 can shift your w.d..
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;;;
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;;; The solution is to relax, not stress out about it, and settle for
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;;; a hack that works pretty well in typical circumstances. Remember
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;;; that a half-assed solution is more in keeping with the spirit of Unix,
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;;; anyway. Blech.
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;;;
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;;; One good hack not implemented here for users of programmable shells
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;;; is to program up the shell w.d. manipulation commands to output
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;;; a coded command sequence to the tty. Something like
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;;; ESC | <cwd> |
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;;; where <cwd> is the new current working directory. Then trash the
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;;; directory tracking machinery currently used in this package, and
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;;; replace it with a process filter that watches for and strips out
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;;; these messages.
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;;; REGEXP is a regular expression. STR is a string. START is a fixnum.
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;;; Returns T if REGEXP matches STR where the match is anchored to start
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;;; at position START in STR. Sort of like LOOKING-AT for strings.
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(defun cmushell-front-match (regexp str start)
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(eq start (string-match regexp str start)))
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|||
|
|
(defun cmushell-directory-tracker (str)
|
|||
|
|
"Tracks cd, pushd and popd commands issued to the shell.
|
|||
|
|
This function is called on each input passed to the shell.
|
|||
|
|
It watches for cd, pushd and popd commands and sets the buffer's
|
|||
|
|
default directory to track these commands.
|
|||
|
|
|
|||
|
|
You may toggle this tracking on and off with M-x dirtrack-toggle.
|
|||
|
|
If emacs gets confused, you can resync with the shell with M-x dirs.
|
|||
|
|
|
|||
|
|
See variables shell-cd-regexp, shell-pushd-regexp, and shell-popd-regexp.
|
|||
|
|
Environment variables are expanded, see function substitute-in-file-name."
|
|||
|
|
(condition-case err
|
|||
|
|
(cond (cmushell-dirtrackp
|
|||
|
|
(string-match "^\\s *" str) ; skip whitespace
|
|||
|
|
(let ((bos (match-end 0))
|
|||
|
|
(x nil))
|
|||
|
|
(cond ((setq x (cmushell-match-cmd-w/optional-arg shell-popd-regexp
|
|||
|
|
str bos))
|
|||
|
|
(cmushell-process-popd (substitute-in-file-name x)))
|
|||
|
|
((setq x (cmushell-match-cmd-w/optional-arg shell-pushd-regexp
|
|||
|
|
str bos))
|
|||
|
|
(cmushell-process-pushd (substitute-in-file-name x)))
|
|||
|
|
((setq x (cmushell-match-cmd-w/optional-arg shell-cd-regexp
|
|||
|
|
str bos))
|
|||
|
|
(cmushell-process-cd (substitute-in-file-name x)))))))
|
|||
|
|
(error (message (car (cdr err))))))
|
|||
|
|
|
|||
|
|
|
|||
|
|
;;; Try to match regexp CMD to string, anchored at position START.
|
|||
|
|
;;; CMD may be followed by a single argument. If a match, then return
|
|||
|
|
;;; the argument, if there is one, or the empty string if not. If
|
|||
|
|
;;; no match, return nil.
|
|||
|
|
|
|||
|
|
(defun cmushell-match-cmd-w/optional-arg (cmd str start)
|
|||
|
|
(and (cmushell-front-match cmd str start)
|
|||
|
|
(let ((eoc (match-end 0))) ; end of command
|
|||
|
|
(cond ((cmushell-front-match "\\s *\\(\;\\|$\\)" str eoc)
|
|||
|
|
"") ; no arg
|
|||
|
|
((cmushell-front-match "\\s +\\([^ \t\;]+\\)\\s *\\(\;\\|$\\)"
|
|||
|
|
str eoc)
|
|||
|
|
(substring str (match-beginning 1) (match-end 1))) ; arg
|
|||
|
|
(t nil))))) ; something else.
|
|||
|
|
;;; The first regexp is [optional whitespace, (";" or the end of string)].
|
|||
|
|
;;; The second regexp is [whitespace, (an arg), optional whitespace,
|
|||
|
|
;;; (";" or end of string)].
|
|||
|
|
|
|||
|
|
|
|||
|
|
;;; popd [+n]
|
|||
|
|
(defun cmushell-process-popd (arg)
|
|||
|
|
(let ((num (if (zerop (length arg)) 0 ; no arg means +0
|
|||
|
|
(cmushell-extract-num arg))))
|
|||
|
|
(if (and num (< num (length cmushell-dirstack)))
|
|||
|
|
(if (= num 0) ; condition-case because the CD could lose.
|
|||
|
|
(condition-case nil (progn (cd (car cmushell-dirstack))
|
|||
|
|
(setq cmushell-dirstack
|
|||
|
|
(cdr cmushell-dirstack))
|
|||
|
|
(cmushell-dirstack-message))
|
|||
|
|
(error (message "Couldn't cd.")))
|
|||
|
|
(let* ((ds (cons nil cmushell-dirstack))
|
|||
|
|
(cell (nthcdr (- num 1) ds)))
|
|||
|
|
(rplacd cell (cdr (cdr cell)))
|
|||
|
|
(setq cmushell-dirstack (cdr ds))
|
|||
|
|
(cmushell-dirstack-message)))
|
|||
|
|
(message "Bad popd."))))
|
|||
|
|
|
|||
|
|
|
|||
|
|
;;; cd [dir]
|
|||
|
|
(defun cmushell-process-cd (arg)
|
|||
|
|
(condition-case nil (progn (cd (if (zerop (length arg)) (getenv "HOME")
|
|||
|
|
arg))
|
|||
|
|
(cmushell-dirstack-message))
|
|||
|
|
(error (message "Couldn't cd."))))
|
|||
|
|
|
|||
|
|
|
|||
|
|
;;; pushd [+n | dir]
|
|||
|
|
(defun cmushell-process-pushd (arg)
|
|||
|
|
(if (zerop (length arg))
|
|||
|
|
;; no arg -- swap pwd and car of shell stack
|
|||
|
|
(condition-case nil (if cmushell-dirstack
|
|||
|
|
(let ((old default-directory))
|
|||
|
|
(cd (car cmushell-dirstack))
|
|||
|
|
(setq cmushell-dirstack
|
|||
|
|
(cons old (cdr cmushell-dirstack)))
|
|||
|
|
(cmushell-dirstack-message))
|
|||
|
|
(message "Directory stack empty."))
|
|||
|
|
(message "Couldn't cd."))
|
|||
|
|
|
|||
|
|
(let ((num (cmushell-extract-num arg)))
|
|||
|
|
(if num ; pushd +n
|
|||
|
|
(if (> num (length cmushell-dirstack))
|
|||
|
|
(message "Directory stack not that deep.")
|
|||
|
|
(let* ((ds (cons default-directory cmushell-dirstack))
|
|||
|
|
(dslen (length ds))
|
|||
|
|
(front (nthcdr num ds))
|
|||
|
|
(back (reverse (nthcdr (- dslen num) (reverse ds))))
|
|||
|
|
(new-ds (append front back)))
|
|||
|
|
(condition-case nil
|
|||
|
|
(progn (cd (car new-ds))
|
|||
|
|
(setq cmushell-dirstack (cdr new-ds))
|
|||
|
|
(cmushell-dirstack-message))
|
|||
|
|
(error (message "Couldn't cd.")))))
|
|||
|
|
|
|||
|
|
;; pushd <dir>
|
|||
|
|
(let ((old-wd default-directory))
|
|||
|
|
(condition-case nil
|
|||
|
|
(progn (cd arg)
|
|||
|
|
(setq cmushell-dirstack
|
|||
|
|
(cons old-wd cmushell-dirstack))
|
|||
|
|
(cmushell-dirstack-message))
|
|||
|
|
(error (message "Couldn't cd."))))))))
|
|||
|
|
|
|||
|
|
;; If STR is of the form +n, for n>0, return n. Otherwise, nil.
|
|||
|
|
(defun cmushell-extract-num (str)
|
|||
|
|
(and (string-match "^\\+[1-9][0-9]*$" str)
|
|||
|
|
(string-to-int str)))
|
|||
|
|
|
|||
|
|
|
|||
|
|
(defun cmushell-dirtrack-toggle ()
|
|||
|
|
"Turn directory tracking on and off in a cmushell buffer."
|
|||
|
|
(interactive)
|
|||
|
|
(setq cmushell-dirtrackp (not cmushell-dirtrackp))
|
|||
|
|
(message "directory tracking %s."
|
|||
|
|
(if cmushell-dirtrackp "ON" "OFF")))
|
|||
|
|
|
|||
|
|
;;; For your typing convenience:
|
|||
|
|
(fset 'dirtrack-toggle 'cmushell-dirtrack-toggle)
|
|||
|
|
|
|||
|
|
|
|||
|
|
(defun cmushell-resync-dirs ()
|
|||
|
|
"Resync the buffer's idea of the current directory stack.
|
|||
|
|
This command queries the shell with the command bound to
|
|||
|
|
cmushell-dirstack-query (default \"dirs\"), reads the next
|
|||
|
|
line output and parses it to form the new directory stack.
|
|||
|
|
DON'T issue this command unless the buffer is at a shell prompt.
|
|||
|
|
Also, note that if some other subprocess decides to do output
|
|||
|
|
immediately after the query, its output will be taken as the
|
|||
|
|
new directory stack -- you lose. If this happens, just do the
|
|||
|
|
command again."
|
|||
|
|
(interactive)
|
|||
|
|
(let* ((proc (get-buffer-process (current-buffer)))
|
|||
|
|
(pmark (process-mark proc)))
|
|||
|
|
(goto-char pmark)
|
|||
|
|
(insert cmushell-dirstack-query) (insert "\n")
|
|||
|
|
(sit-for 0) ; force redisplay
|
|||
|
|
(comint-send-string proc cmushell-dirstack-query)
|
|||
|
|
(comint-send-string proc "\n")
|
|||
|
|
(set-marker pmark (point))
|
|||
|
|
(let ((pt (point))) ; wait for 1 line
|
|||
|
|
;; This extra newline prevents the user's pending input from spoofing us.
|
|||
|
|
(insert "\n") (backward-char 1)
|
|||
|
|
(while (not (looking-at ".+\n"))
|
|||
|
|
(accept-process-output proc)
|
|||
|
|
(goto-char pt)))
|
|||
|
|
(goto-char pmark) (delete-char 1) ; remove the extra newline
|
|||
|
|
;; That's the dirlist. grab it & parse it.
|
|||
|
|
(let* ((dl (buffer-substring (match-beginning 0) (- (match-end 0) 1)))
|
|||
|
|
(dl-len (length dl))
|
|||
|
|
(ds '()) ; new dir stack
|
|||
|
|
(i 0))
|
|||
|
|
(while (< i dl-len)
|
|||
|
|
;; regexp = optional whitespace, (non-whitespace), optional whitespace
|
|||
|
|
(string-match "\\s *\\(\\S +\\)\\s *" dl i) ; pick off next dir
|
|||
|
|
(setq ds (cons (substring dl (match-beginning 1) (match-end 1))
|
|||
|
|
ds))
|
|||
|
|
(setq i (match-end 0)))
|
|||
|
|
(let ((ds (reverse ds)))
|
|||
|
|
(condition-case nil
|
|||
|
|
(progn (cd (car ds))
|
|||
|
|
(setq cmushell-dirstack (cdr ds))
|
|||
|
|
(cmushell-dirstack-message))
|
|||
|
|
(error (message "Couldn't cd.")))))))
|
|||
|
|
|
|||
|
|
;;; For your typing convenience:
|
|||
|
|
(fset 'dirs 'cmushell-resync-dirs)
|
|||
|
|
|
|||
|
|
|
|||
|
|
;;; Show the current dirstack on the message line.
|
|||
|
|
;;; Pretty up dirs a bit by changing "/usr/jqr/foo" to "~/foo".
|
|||
|
|
;;; (This isn't necessary if the dirlisting is generated with a simple "dirs".)
|
|||
|
|
;;; All the commands that mung the buffer's dirstack finish by calling
|
|||
|
|
;;; this guy.
|
|||
|
|
(defun cmushell-dirstack-message ()
|
|||
|
|
(let ((msg "")
|
|||
|
|
(ds (cons default-directory cmushell-dirstack)))
|
|||
|
|
(while ds
|
|||
|
|
(let ((dir (car ds)))
|
|||
|
|
(if (string-match (format "^%s\\(/\\|$\\)" (getenv "HOME")) dir)
|
|||
|
|
(setq dir (concat "~/" (substring dir (match-end 0)))))
|
|||
|
|
(if (string-equal dir "~/") (setq dir "~"))
|
|||
|
|
(setq msg (concat msg dir " "))
|
|||
|
|
(setq ds (cdr ds))))
|
|||
|
|
(message msg)))
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
;;; Interfacing to client packages (and converting them)
|
|||
|
|
;;;============================================================================
|
|||
|
|
;;; Several gnu packages (tex-mode, background, dbx, gdb, kermit, prolog,
|
|||
|
|
;;; telnet are some) use the shell package as clients. Most of them would
|
|||
|
|
;;; be better off using the comint package directly, but they predate it.
|
|||
|
|
;;; The catch is that most of these packages (dbx, gdb, prolog, telnet)
|
|||
|
|
;;; assume total knowledge of all the local variables that shell mode
|
|||
|
|
;;; functions depend on. So they (kill-all-local-variables), then create
|
|||
|
|
;;; the few local variables that shell.el functions depend on. Alas,
|
|||
|
|
;;; cmushell.el functions depend on a different set of vars (for example,
|
|||
|
|
;;; the input history ring is a local variable in cmushell.el's shell mode,
|
|||
|
|
;;; whereas there is no input history ring in shell.el's shell mode).
|
|||
|
|
;;; So we have a situation where the greater functionality of cmushell.el
|
|||
|
|
;;; is biting us -- you can't just replace shell will cmushell.
|
|||
|
|
;;;
|
|||
|
|
;;; Altering these packages to use comint mode directly should *greatly*
|
|||
|
|
;;; improve their functionality, and is actually pretty easy. It's
|
|||
|
|
;;; mostly a matter of renaming a few variable names. See comint.el for more.
|
|||
|
|
;;; -Olin
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
;;; Do the user's customisation...
|
|||
|
|
;;;===============================
|
|||
|
|
(defvar cmushell-load-hook nil
|
|||
|
|
"This hook is run when cmushell is loaded in.
|
|||
|
|
This is a good place to put keybindings.")
|
|||
|
|
|
|||
|
|
(run-hooks 'cmushell-load-hook)
|
|||
|
|
|
|||
|
|
;;; Change Log
|
|||
|
|
;;; ===========================================================================
|
|||
|
|
;;; Olin 8/88
|
|||
|
|
;;; Created.
|
|||
|
|
;;;
|
|||
|
|
;;; Olin 5/26/90
|
|||
|
|
;;; - 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.
|
|||
|
|
;;; - Souped up the directory tracking; it now can handle pushd, pushd +n,
|
|||
|
|
;;; and popd +n.
|
|||
|
|
;;; - Added cmushell-dirtrack-toggle command to toggle the directory
|
|||
|
|
;;; tracking that cmushell tries to do. This is useful, for example,
|
|||
|
|
;;; when you are running ftp -- it prevents the ftp "cd" command from
|
|||
|
|
;;; spoofing the tracking machinery. This command is also named
|
|||
|
|
;;; dirtrack-toggle, so you need only type M-x dirtrack to run it.
|
|||
|
|
;;; - Added cmushell-resync-dirs command. This queries the shell
|
|||
|
|
;;; for the current directory stack, and resets the buffer's stack
|
|||
|
|
;;; accordingly. This command is also named dirs, so you need only type
|
|||
|
|
;;; M-x dirs to run it.
|
|||
|
|
;;; - Bits of the new directory tracking code were adapted from source
|
|||
|
|
;;; contributed by Vince Broman, Jeff Peck, and Barry Warsaw.
|
|||
|
|
;;; - See also the improvements made to comint.el at the same time.
|
|||
|
|
;;; - Renamed several variables. Mostly this comprised changing "shell"
|
|||
|
|
;;; to "cmushell" in the names. The only variables that are not prefixed
|
|||
|
|
;;; with "cmushell-" are the ones that are common with shell.el:
|
|||
|
|
;;; explicit-shell-file-name shell-prompt-pattern explicit-csh-args
|
|||
|
|
;;; and shell-cd/popd/pushd-regexp
|
|||
|
|
;;; The variables and functions that were changed to have "cmushell-"
|
|||
|
|
;;; prefixes are:
|
|||
|
|
;;; shell-directory-stack (v), shell-directory-tracker (f)
|
|||
|
|
;;; This should not affect users, only elisp hackers. Hopefully
|
|||
|
|
;;; one day shell.el will just go away, and we can drop all this
|
|||
|
|
;;; "cmushell" bullshit.
|
|||
|
|
;;; - Upgraded process sends to use comint-send-string instead of
|
|||
|
|
;;; process-send-string.
|
|||
|
|
;;;
|
|||
|
|
;;; Olin 6/14/90
|
|||
|
|
;;; - If your shell is named <shellname>, and a variable named
|
|||
|
|
;;; explicit-<shellname>-args exists, cmushell is supposed
|
|||
|
|
;;; to use its value as the arglist to the shell invocation.
|
|||
|
|
;;; E.g., if you define explicit-csh-args to be
|
|||
|
|
;;; ("-ifx"), then when cmushell cranks up a csh, it execs it
|
|||
|
|
;;; as "csh -ifx". This is what is documented. What has actually
|
|||
|
|
;;; been the case is that the variable checked is
|
|||
|
|
;;; explicit-<shellname>-arguments, not explicit-<shellname>-args.
|
|||
|
|
;;; The documentation has been changed to conform to the code (for
|
|||
|
|
;;; backwards compatibility with shell.el). This bug is inherited from
|
|||
|
|
;;; the same bug in shell.el.
|
|||
|
|
;;; This bug reported by Stephen Anderson.
|
|||
|
|
;;;
|
|||
|
|
;;; Olin 9/5/90
|
|||
|
|
;;; - Arguments to cd, popd, and pushd now have their env vars expanded
|
|||
|
|
;;; out by the tracking machinery. So if you say "cd $SRCDIR/funs", the
|
|||
|
|
;;; $SRCDIR var will be replaced by its value *in emacs' process
|
|||
|
|
;;; environment*. If this is different from the shell's binding of the
|
|||
|
|
;;; variable, you lose. Several users needed this feature, fragile
|
|||
|
|
;;; though it may be. The fix was contributed by sk@thp.Uni-Koeln.DE.
|
|||
|
|
;;;
|
|||
|
|
;;; Olin 3/12/91
|
|||
|
|
;;; - Moved comint-dynamic-complete (filename completion) from M-tab to tab.
|