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1020 lines
40 KiB
EmacsLisp
1020 lines
40 KiB
EmacsLisp
;;; shell.el --- specialized comint.el for running the shell
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;; Copyright (C) 1988, 93, 94, 95, 96, 1997, 2000 Free Software Foundation, Inc.
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;; Author: Olin Shivers <shivers@cs.cmu.edu>
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;; Simon Marshall <simon@gnu.org>
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;; Maintainer: FSF
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;; Keywords: processes
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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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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;; - Simon Marshall (simon@gnu.org)
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;; This file defines a shell-in-a-buffer package (shell mode) built on
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;; top of comint mode. This is actually cmushell with things renamed
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;; to replace its counterpart in Emacs 18. cmushell is more
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;; featureful, robust, and uniform than the Emacs 18 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 shell 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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;; 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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;; ;; Define M-# to run some strange command:
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;; (eval-after-load "shell"
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;; '(define-key shell-mode-map "\M-#" 'shells-dynamic-spell))
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;; Brief Command Documentation:
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;;============================================================================
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;; Comint Mode Commands: (common to shell 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-r comint-previous-matching-input Previous input matching a regexp
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;; m-s comint-next-matching-input Next input that matches
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;; m-c-l comint-show-output Show last batch of process output
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;; return comint-send-input
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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-a comint-bol Beginning of line; skip prompt
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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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;; c-c c-l comint-dynamic-list-input-ring List input history
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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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;; shell Fires up the shell process
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;; tab comint-dynamic-complete Complete filename/command/history
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;; m-? comint-dynamic-list-filename-completions
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;; List completions in help buffer
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;; m-c-f shell-forward-command Forward a shell command
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;; m-c-b shell-backward-command Backward a shell command
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;; dirs Resync the buffer's dir stack
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;; dirtrack-mode Turn dir tracking on/off
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;; comint-strip-ctrl-m Remove trailing ^Ms from output
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;;
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;; The shell mode hook is shell-mode-hook
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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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;;; Code:
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(require 'comint)
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;;; Customization and Buffer Variables
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(defgroup shell nil
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"Running shell from within Emacs buffers"
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:group 'processes
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:group 'unix)
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(defgroup shell-directories nil
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"Directory support in shell mode"
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:group 'shell)
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(defgroup shell-faces nil
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"Faces in shell buffers"
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:group 'shell)
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;;;###autoload
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(defcustom shell-dumb-shell-regexp "cmd\\(proxy\\)?\\.exe"
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"Regexp to match shells that don't save their command history, and
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don't handle the backslash as a quote character. For shells that
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match this regexp, Emacs will write out the command history when the
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shell finishes, and won't remove backslashes when it unquotes shell
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arguments."
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:type 'regexp
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:group 'shell)
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(defcustom shell-prompt-pattern "^[^#$%>\n]*[#$%>] *"
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"Regexp to match prompts in the inferior shell.
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Defaults to \"^[^#$%>\\n]*[#$%>] *\", 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 variable is only used if the variable
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`comint-use-prompt-regexp-instead-of-fields' is non-nil.
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The pattern should probably not match more than one line. If it does,
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Shell mode may become confused trying to distinguish prompt from input
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on lines which don't start with a prompt.
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This is a fine thing to set in your `.emacs' file."
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:type 'regexp
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:group 'shell)
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(defcustom shell-completion-fignore nil
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"*List of suffixes to be disregarded during file/command completion.
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This variable is used to initialize `comint-completion-fignore' in the shell
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buffer. The default is nil, for compatibility with most shells.
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Some people like (\"~\" \"#\" \"%\").
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This is a fine thing to set in your `.emacs' file."
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:type '(repeat (string :tag "Suffix"))
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:group 'shell)
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(defvar shell-delimiter-argument-list '(?\| ?& ?< ?> ?\( ?\) ?\;)
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"List of characters to recognise as separate arguments.
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This variable is used to initialize `comint-delimiter-argument-list' in the
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shell buffer. The value may depend on the operating system or shell.
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This is a fine thing to set in your `.emacs' file.")
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(defvar shell-file-name-chars
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(if (memq system-type '(ms-dos windows-nt))
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"~/A-Za-z0-9_^$!#%&{}@`'.,:()-"
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"~/A-Za-z0-9+@:_.$#%,={}-")
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"String of characters valid in a file name.
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This variable is used to initialize `comint-file-name-chars' in the
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shell buffer. The value may depend on the operating system or shell.
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This is a fine thing to set in your `.emacs' file.")
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(defvar shell-file-name-quote-list
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(if (memq system-type '(ms-dos windows-nt))
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nil
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(append shell-delimiter-argument-list '(?\ ?\* ?\! ?\" ?\' ?\` ?\#)))
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"List of characters to quote when in a file name.
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This variable is used to initialize `comint-file-name-quote-list' in the
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shell buffer. The value may depend on the operating system or shell.
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This is a fine thing to set in your `.emacs' file.")
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(defvar shell-dynamic-complete-functions
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'(comint-replace-by-expanded-history
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shell-dynamic-complete-environment-variable
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shell-dynamic-complete-command
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shell-replace-by-expanded-directory
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comint-dynamic-complete-filename)
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"List of functions called to perform completion.
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This variable is used to initialise `comint-dynamic-complete-functions' 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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(defcustom shell-command-regexp "[^;&|\n]+"
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"*Regexp to match a single command within a pipeline.
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This is used for directory tracking and does not do a perfect job."
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:type 'regexp
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:group 'shell)
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(defcustom shell-completion-execonly t
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"*If non-nil, use executable files only for completion candidates.
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This mirrors the optional behavior of tcsh.
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Detecting executability of files may slow command completion considerably."
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:type 'boolean
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:group 'shell)
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(defcustom shell-popd-regexp "popd"
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"*Regexp to match subshell commands equivalent to popd."
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:type 'regexp
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:group 'shell-directories)
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(defcustom shell-pushd-regexp "pushd"
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"*Regexp to match subshell commands equivalent to pushd."
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:type 'regexp
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:group 'shell-directories)
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(defcustom shell-pushd-tohome nil
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"*If non-nil, make pushd with no arg behave as \"pushd ~\" (like cd).
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This mirrors the optional behavior of tcsh."
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:type 'boolean
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:group 'shell-directories)
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(defcustom shell-pushd-dextract nil
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"*If non-nil, make \"pushd +n\" pop the nth dir to the stack top.
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This mirrors the optional behavior of tcsh."
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:type 'boolean
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:group 'shell-directories)
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(defcustom shell-pushd-dunique nil
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"*If non-nil, make pushd only add unique directories to the stack.
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This mirrors the optional behavior of tcsh."
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:type 'boolean
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:group 'shell-directories)
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(defcustom shell-cd-regexp "cd"
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"*Regexp to match subshell commands equivalent to cd."
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:type 'regexp
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:group 'shell-directories)
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(defcustom shell-chdrive-regexp
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(if (memq system-type '(ms-dos windows-nt))
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; NetWare allows the five chars between upper and lower alphabetics.
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"[]a-zA-Z^_`\\[\\\\]:"
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nil)
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"*If non-nil, is regexp used to track drive changes."
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:type '(choice regexp
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(const nil))
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:group 'shell-directories)
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(defcustom shell-dirtrack-verbose t
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"*If non-nil, show the directory stack following directory change.
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This is effective only if directory tracking is enabled."
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:type 'boolean
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:group 'shell-directories)
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(defcustom 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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:type '(choice (const :tag "None" nil) file)
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:group 'shell)
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(defcustom 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 shell, if the shell is csh.
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Value is a list of strings, which may be nil."
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:type '(repeat (string :tag "Argument"))
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:group 'shell)
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(defcustom explicit-bash-args
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;; Tell bash not to use readline.
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'("--noediting" "-i")
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"*Args passed to inferior shell by M-x shell, if the shell is bash.
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Value is a list of strings, which may be nil."
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:type '(repeat (string :tag "Argument"))
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:group 'shell)
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(defcustom shell-input-autoexpand 'history
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"*If non-nil, expand input command history references on completion.
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This mirrors the optional behavior of tcsh (its autoexpand and histlit).
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If the value is `input', then the expansion is seen on input.
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If the value is `history', then the expansion is only when inserting
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into the buffer's input ring. See also `comint-magic-space' and
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`comint-dynamic-complete'.
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This variable supplies a default for `comint-input-autoexpand',
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for Shell mode only."
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:type '(choice (const :tag "off" nil)
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(const input)
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(const history)
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(const :tag "on" t))
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:group 'shell)
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(defvar shell-dirstack nil
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"List of directories saved by pushd in this buffer's shell.
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Thus, this does not include the shell's current directory.")
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(defvar shell-dirtrackp t
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"Non-nil in a shell buffer means directory tracking is enabled.")
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(defvar shell-last-dir nil
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"Keep track of last directory for ksh `cd -' command.")
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(defvar shell-dirstack-query nil
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"Command used by `shell-resync-dir' to query the shell.")
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(defvar shell-mode-map nil)
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(cond ((not shell-mode-map)
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(setq shell-mode-map (nconc (make-sparse-keymap) comint-mode-map))
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(define-key shell-mode-map "\C-c\C-f" 'shell-forward-command)
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(define-key shell-mode-map "\C-c\C-b" 'shell-backward-command)
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(define-key shell-mode-map "\t" 'comint-dynamic-complete)
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(define-key shell-mode-map "\M-?"
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'comint-dynamic-list-filename-completions)
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(define-key shell-mode-map [menu-bar completion]
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(cons "Complete"
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(copy-keymap (lookup-key comint-mode-map [menu-bar completion]))))
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(define-key-after (lookup-key shell-mode-map [menu-bar completion])
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[complete-env-variable] '("Complete Env. Variable Name" .
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shell-dynamic-complete-environment-variable)
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'complete-file)
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(define-key-after (lookup-key shell-mode-map [menu-bar completion])
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[expand-directory] '("Expand Directory Reference" .
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shell-replace-by-expanded-directory)
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'complete-expand)))
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(defcustom shell-mode-hook '()
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"*Hook for customising Shell mode."
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:type 'hook
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:group 'shell)
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(defvar shell-font-lock-keywords
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'(("[ \t]\\([+-][^ \t\n]+\\)" 1 font-lock-comment-face)
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("^[^ \t\n]+:.*" . font-lock-string-face)
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("^\\[[1-9][0-9]*\\]" . font-lock-string-face))
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"Additional expressions to highlight in Shell mode.")
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;;; Basic Procedures
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(put 'shell-mode 'mode-class 'special)
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(define-derived-mode shell-mode comint-mode "Shell"
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"Major mode for interacting with an inferior shell.
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\\[comint-send-input] after the end of the process' output sends the text from
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the end of process to the end of the current line.
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\\[comint-send-input] before end of process output copies the current line minus the prompt to
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the end of the buffer and sends it (\\[comint-copy-old-input] just copies the current line).
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\\[send-invisible] reads a line of text without echoing it, and sends it to
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the shell. This is useful for entering passwords. Or, add the function
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`comint-watch-for-password-prompt' to `comint-output-filter-functions'.
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If you want to make multiple shell buffers, rename the `*shell*' buffer
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using \\[rename-buffer] or \\[rename-uniquely] and start a new shell.
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If you want to make shell buffers limited in length, add the function
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`comint-truncate-buffer' to `comint-output-filter-functions'.
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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
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keep this buffer's default directory the same as the shell's working directory.
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While directory tracking is enabled, the shell's working directory is displayed
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by \\[list-buffers] or \\[mouse-buffer-menu] in the `File' field.
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\\[dirs] queries the shell and resyncs Emacs' idea of what the current
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directory stack is.
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\\[dirtrack-mode] turns directory tracking on and off.
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\\{shell-mode-map}
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Customization: Entry to this mode runs the hooks on `comint-mode-hook' and
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`shell-mode-hook' (in that order). Before each input, the hooks on
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`comint-input-filter-functions' are run. After each shell output, the hooks
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on `comint-output-filter-functions' are run.
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Variables `shell-cd-regexp', `shell-chdrive-regexp', `shell-pushd-regexp'
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and `shell-popd-regexp' are used to match their respective commands,
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while `shell-pushd-tohome', `shell-pushd-dextract' and `shell-pushd-dunique'
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control the behavior of the relevant command.
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Variables `comint-completion-autolist', `comint-completion-addsuffix',
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`comint-completion-recexact' and `comint-completion-fignore' control the
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behavior of file name, command name and variable name completion. Variable
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`shell-completion-execonly' controls the behavior of command name completion.
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Variable `shell-completion-fignore' is used to initialise the value of
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`comint-completion-fignore'.
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Variables `comint-input-ring-file-name' and `comint-input-autoexpand' control
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the initialisation of the input ring history, and history expansion.
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Variables `comint-output-filter-functions', a hook, and
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`comint-scroll-to-bottom-on-input' and `comint-scroll-to-bottom-on-output'
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control whether input and output cause the window to scroll to the end of the
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buffer."
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(setq comint-prompt-regexp shell-prompt-pattern)
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(setq comint-completion-fignore shell-completion-fignore)
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(setq comint-delimiter-argument-list shell-delimiter-argument-list)
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(setq comint-file-name-chars shell-file-name-chars)
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(setq comint-file-name-quote-list shell-file-name-quote-list)
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(setq comint-dynamic-complete-functions shell-dynamic-complete-functions)
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(make-local-variable 'paragraph-start)
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(setq paragraph-start comint-prompt-regexp)
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(make-local-variable 'font-lock-defaults)
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(setq font-lock-defaults '(shell-font-lock-keywords t))
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(make-local-variable 'shell-dirstack)
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(setq shell-dirstack nil)
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(make-local-variable 'shell-last-dir)
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(setq shell-last-dir nil)
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(make-local-variable 'shell-dirtrackp)
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(setq shell-dirtrackp t)
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(add-hook 'comint-input-filter-functions 'shell-directory-tracker nil t)
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(setq comint-input-autoexpand shell-input-autoexpand)
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;; This is not really correct, since the shell buffer does not really
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;; edit this directory. But it is useful in the buffer list and menus.
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(make-local-variable 'list-buffers-directory)
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(setq list-buffers-directory (expand-file-name default-directory))
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;; shell-dependent assignments.
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(when (ring-empty-p comint-input-ring)
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(let ((shell (file-name-nondirectory (car
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(process-command (get-buffer-process (current-buffer)))))))
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(setq comint-input-ring-file-name
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(or (getenv "HISTFILE")
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(cond ((string-equal shell "bash") "~/.bash_history")
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((string-equal shell "ksh") "~/.sh_history")
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(t "~/.history"))))
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(if (or (equal comint-input-ring-file-name "")
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(equal (file-truename comint-input-ring-file-name)
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(file-truename "/dev/null")))
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(setq comint-input-ring-file-name nil))
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;; Arrange to write out the input ring on exit, if the shell doesn't
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;; do this itself.
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|
(if (and comint-input-ring-file-name
|
|
(string-match shell-dumb-shell-regexp shell))
|
|
(set-process-sentinel (get-buffer-process (current-buffer))
|
|
#'shell-write-history-on-exit))
|
|
(setq shell-dirstack-query
|
|
(cond ((string-equal shell "sh") "pwd")
|
|
((string-equal shell "ksh") "echo $PWD ~-")
|
|
(t "dirs"))))
|
|
(comint-read-input-ring t)))
|
|
|
|
(defun shell-write-history-on-exit (process event)
|
|
"Called when the shell process is stopped.
|
|
|
|
Writes the input history to a history file
|
|
`comint-input-ring-file-name' using `comint-write-input-ring'
|
|
and inserts a short message in the shell buffer.
|
|
|
|
This function is a sentinel watching the shell interpreter process.
|
|
Sentinels will always get the two parameters PROCESS and EVENT."
|
|
;; Write history.
|
|
(comint-write-input-ring)
|
|
(let ((buf (process-buffer process)))
|
|
(when (buffer-live-p buf)
|
|
(with-current-buffer buf
|
|
(insert (format "\nProcess %s %s\n" process event))))))
|
|
|
|
;;;###autoload
|
|
(defun shell (&optional buffer)
|
|
"Run an inferior shell, with I/O through BUFFER (which defaults to `*shell*').
|
|
Interactively, a prefix arg means to prompt for BUFFER.
|
|
If BUFFER exists but shell process is not running, make new shell.
|
|
If BUFFER exists and shell process is running, just switch to BUFFER.
|
|
Program used comes from variable `explicit-shell-file-name',
|
|
or (if that is nil) from the ESHELL environment variable,
|
|
or else from SHELL if there is no ESHELL.
|
|
If a file `~/.emacs_SHELLNAME' exists, it is given as initial input
|
|
(Note that this may lose due to a timing error if the shell
|
|
discards input when it starts up.)
|
|
The buffer is put in Shell mode, giving commands for sending input
|
|
and controlling the subjobs of the shell. See `shell-mode'.
|
|
See also the variable `shell-prompt-pattern'.
|
|
|
|
To specify a coding system for converting non-ASCII characters
|
|
in the input and output to the shell, use \\[universal-coding-system-argument]
|
|
before \\[shell]. You can also specify this with \\[set-buffer-process-coding-system]
|
|
in the shell buffer, after you start the shell.
|
|
The default comes from `process-coding-system-alist' and
|
|
`default-process-coding-system'.
|
|
|
|
The shell file name (sans directories) is used to make a symbol name
|
|
such as `explicit-csh-args'. If that symbol is a variable,
|
|
its value is used as a list of arguments when invoking the shell.
|
|
Otherwise, one argument `-i' is passed to the shell.
|
|
|
|
\(Type \\[describe-mode] in the shell buffer for a list of commands.)"
|
|
(interactive
|
|
(list
|
|
(and current-prefix-arg
|
|
(read-buffer "Shell buffer: " "*shell*"))))
|
|
(setq buffer (get-buffer-create (or buffer "*shell*")))
|
|
;; Pop to buffer, so that the buffer's window will be correctly set
|
|
;; when we call comint (so that comint sets the COLUMNS env var properly).
|
|
(pop-to-buffer buffer)
|
|
(unless (comint-check-proc buffer)
|
|
(let* ((prog (or explicit-shell-file-name
|
|
(getenv "ESHELL") shell-file-name))
|
|
(name (file-name-nondirectory prog))
|
|
(startfile (concat "~/.emacs_" name))
|
|
(xargs-name (intern-soft (concat "explicit-" name "-args"))))
|
|
(apply 'make-comint-in-buffer "shell" buffer prog
|
|
(if (file-exists-p startfile) startfile)
|
|
(if (and xargs-name (boundp xargs-name))
|
|
(symbol-value xargs-name)
|
|
'("-i")))
|
|
(shell-mode)))
|
|
buffer)
|
|
|
|
;;; Don't do this when shell.el is loaded, only while dumping.
|
|
;;;###autoload (add-hook 'same-window-buffer-names "*shell*")
|
|
|
|
;;; Directory tracking
|
|
;;;
|
|
;;; This code provides the shell mode input sentinel
|
|
;;; SHELL-DIRECTORY-TRACKER
|
|
;;; that tracks cd, pushd, and popd commands issued to the shell, and
|
|
;;; changes the current directory of the shell buffer accordingly.
|
|
;;;
|
|
;;; This is basically a fragile hack, although it's more accurate than
|
|
;;; the version in Emacs 18's shell.el. It has the following failings:
|
|
;;; 1. It doesn't know about the cdpath shell variable.
|
|
;;; 2. It cannot infallibly deal with command sequences, though it does well
|
|
;;; with these and with ignoring commands forked in another shell with ()s.
|
|
;;; 3. More generally, any complex command is going to throw it. Otherwise,
|
|
;;; you'd have to build an entire shell interpreter in emacs lisp. Failing
|
|
;;; that, there's no way to catch shell commands where cd's are buried
|
|
;;; inside conditional expressions, aliases, and so forth.
|
|
;;;
|
|
;;; The whole approach is a crock. Shell aliases mess it up. File sourcing
|
|
;;; messes it up. You run other processes under the shell; these each have
|
|
;;; separate working directories, and some have commands for manipulating
|
|
;;; their w.d.'s (e.g., the lcd command in ftp). Some of these programs have
|
|
;;; commands that do *not* affect the current w.d. at all, but look like they
|
|
;;; do (e.g., the cd command in ftp). In shells that allow you job
|
|
;;; control, you can switch between jobs, all having different w.d.'s. So
|
|
;;; simply saying %3 can shift your w.d..
|
|
;;;
|
|
;;; The solution is to relax, not stress out about it, and settle for
|
|
;;; a hack that works pretty well in typical circumstances. Remember
|
|
;;; that a half-assed solution is more in keeping with the spirit of Unix,
|
|
;;; anyway. Blech.
|
|
;;;
|
|
;;; One good hack not implemented here for users of programmable shells
|
|
;;; is to program up the shell w.d. manipulation commands to output
|
|
;;; a coded command sequence to the tty. Something like
|
|
;;; ESC | <cwd> |
|
|
;;; where <cwd> is the new current working directory. Then trash the
|
|
;;; directory tracking machinery currently used in this package, and
|
|
;;; replace it with a process filter that watches for and strips out
|
|
;;; these messages.
|
|
|
|
(defun shell-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-mode.
|
|
If emacs gets confused, you can resync with the shell with M-x dirs.
|
|
|
|
See variables `shell-cd-regexp', `shell-chdrive-regexp', `shell-pushd-regexp',
|
|
and `shell-popd-regexp', while `shell-pushd-tohome', `shell-pushd-dextract',
|
|
and `shell-pushd-dunique' control the behavior of the relevant command.
|
|
|
|
Environment variables are expanded, see function `substitute-in-file-name'."
|
|
(if shell-dirtrackp
|
|
;; We fail gracefully if we think the command will fail in the shell.
|
|
(condition-case chdir-failure
|
|
(let ((start (progn (string-match "^[; \t]*" str) ; skip whitespace
|
|
(match-end 0)))
|
|
end cmd arg1)
|
|
(while (string-match shell-command-regexp str start)
|
|
(setq end (match-end 0)
|
|
cmd (comint-arguments (substring str start end) 0 0)
|
|
arg1 (comint-arguments (substring str start end) 1 1))
|
|
(if arg1
|
|
(setq arg1 (shell-unquote-argument arg1)))
|
|
(cond ((string-match (concat "\\`\\(" shell-popd-regexp
|
|
"\\)\\($\\|[ \t]\\)")
|
|
cmd)
|
|
(shell-process-popd (comint-substitute-in-file-name arg1)))
|
|
((string-match (concat "\\`\\(" shell-pushd-regexp
|
|
"\\)\\($\\|[ \t]\\)")
|
|
cmd)
|
|
(shell-process-pushd (comint-substitute-in-file-name arg1)))
|
|
((string-match (concat "\\`\\(" shell-cd-regexp
|
|
"\\)\\($\\|[ \t]\\)")
|
|
cmd)
|
|
(shell-process-cd (comint-substitute-in-file-name arg1)))
|
|
((and shell-chdrive-regexp
|
|
(string-match (concat "\\`\\(" shell-chdrive-regexp
|
|
"\\)\\($\\|[ \t]\\)")
|
|
cmd))
|
|
(shell-process-cd (comint-substitute-in-file-name cmd))))
|
|
(setq start (progn (string-match "[; \t]*" str end) ; skip again
|
|
(match-end 0)))))
|
|
(error "Couldn't cd"))))
|
|
|
|
(defun shell-unquote-argument (string)
|
|
"Remove all kinds of shell quoting from STRING."
|
|
(save-match-data
|
|
(let ((idx 0) next inside
|
|
(quote-chars
|
|
(if (string-match shell-dumb-shell-regexp
|
|
(file-name-nondirectory
|
|
(car (process-command (get-buffer-process (current-buffer))))))
|
|
"['`\"]"
|
|
"[\\'`\"]")))
|
|
(while (and (< idx (length string))
|
|
(setq next (string-match quote-chars string next)))
|
|
(cond ((= (aref string next) ?\\)
|
|
(setq string (replace-match "" nil nil string))
|
|
(setq next (1+ next)))
|
|
((and inside (= (aref string next) inside))
|
|
(setq string (replace-match "" nil nil string))
|
|
(setq inside nil))
|
|
(inside
|
|
(setq next (1+ next)))
|
|
(t
|
|
(setq inside (aref string next))
|
|
(setq string (replace-match "" nil nil string)))))
|
|
string)))
|
|
|
|
;;; popd [+n]
|
|
(defun shell-process-popd (arg)
|
|
(let ((num (or (shell-extract-num arg) 0)))
|
|
(cond ((and num (= num 0) shell-dirstack)
|
|
(shell-cd (car shell-dirstack))
|
|
(setq shell-dirstack (cdr shell-dirstack))
|
|
(shell-dirstack-message))
|
|
((and num (> num 0) (<= num (length shell-dirstack)))
|
|
(let* ((ds (cons nil shell-dirstack))
|
|
(cell (nthcdr (1- num) ds)))
|
|
(rplacd cell (cdr (cdr cell)))
|
|
(setq shell-dirstack (cdr ds))
|
|
(shell-dirstack-message)))
|
|
(t
|
|
(error "Couldn't popd")))))
|
|
|
|
;; Return DIR prefixed with comint-file-name-prefix as appropriate.
|
|
(defun shell-prefixed-directory-name (dir)
|
|
(if (= (length comint-file-name-prefix) 0)
|
|
dir
|
|
(if (file-name-absolute-p dir)
|
|
;; The name is absolute, so prepend the prefix.
|
|
(concat comint-file-name-prefix dir)
|
|
;; For relative name we assume default-directory already has the prefix.
|
|
(expand-file-name dir))))
|
|
|
|
;;; cd [dir]
|
|
(defun shell-process-cd (arg)
|
|
(let ((new-dir (cond ((zerop (length arg)) (concat comint-file-name-prefix
|
|
"~"))
|
|
((string-equal "-" arg) shell-last-dir)
|
|
(t (shell-prefixed-directory-name arg)))))
|
|
(setq shell-last-dir default-directory)
|
|
(shell-cd new-dir)
|
|
(shell-dirstack-message)))
|
|
|
|
;;; pushd [+n | dir]
|
|
(defun shell-process-pushd (arg)
|
|
(let ((num (shell-extract-num arg)))
|
|
(cond ((zerop (length arg))
|
|
;; no arg -- swap pwd and car of stack unless shell-pushd-tohome
|
|
(cond (shell-pushd-tohome
|
|
(shell-process-pushd (concat comint-file-name-prefix "~")))
|
|
(shell-dirstack
|
|
(let ((old default-directory))
|
|
(shell-cd (car shell-dirstack))
|
|
(setq shell-dirstack (cons old (cdr shell-dirstack)))
|
|
(shell-dirstack-message)))
|
|
(t
|
|
(message "Directory stack empty."))))
|
|
((numberp num)
|
|
;; pushd +n
|
|
(cond ((> num (length shell-dirstack))
|
|
(message "Directory stack not that deep."))
|
|
((= num 0)
|
|
(error (message "Couldn't cd")))
|
|
(shell-pushd-dextract
|
|
(let ((dir (nth (1- num) shell-dirstack)))
|
|
(shell-process-popd arg)
|
|
(shell-process-pushd default-directory)
|
|
(shell-cd dir)
|
|
(shell-dirstack-message)))
|
|
(t
|
|
(let* ((ds (cons default-directory shell-dirstack))
|
|
(dslen (length ds))
|
|
(front (nthcdr num ds))
|
|
(back (reverse (nthcdr (- dslen num) (reverse ds))))
|
|
(new-ds (append front back)))
|
|
(shell-cd (car new-ds))
|
|
(setq shell-dirstack (cdr new-ds))
|
|
(shell-dirstack-message)))))
|
|
(t
|
|
;; pushd <dir>
|
|
(let ((old-wd default-directory))
|
|
(shell-cd (shell-prefixed-directory-name arg))
|
|
(if (or (null shell-pushd-dunique)
|
|
(not (member old-wd shell-dirstack)))
|
|
(setq shell-dirstack (cons old-wd shell-dirstack)))
|
|
(shell-dirstack-message))))))
|
|
|
|
;; If STR is of the form +n, for n>0, return n. Otherwise, nil.
|
|
(defun shell-extract-num (str)
|
|
(and (string-match "^\\+[1-9][0-9]*$" str)
|
|
(string-to-int str)))
|
|
|
|
|
|
(defun shell-dirtrack-mode ()
|
|
"Turn directory tracking on and off in a shell buffer."
|
|
(interactive)
|
|
(if (setq shell-dirtrackp (not shell-dirtrackp))
|
|
(setq list-buffers-directory default-directory)
|
|
(setq list-buffers-directory nil))
|
|
(message "Directory tracking %s" (if shell-dirtrackp "ON" "OFF")))
|
|
|
|
;;; For your typing convenience:
|
|
(defalias 'shell-dirtrack-toggle 'shell-dirtrack-mode)
|
|
(defalias 'dirtrack-toggle 'shell-dirtrack-mode)
|
|
(defalias 'dirtrack-mode 'shell-dirtrack-mode)
|
|
|
|
(defun shell-cd (dir)
|
|
"Do normal `cd' to DIR, and set `list-buffers-directory'."
|
|
(if shell-dirtrackp
|
|
(setq list-buffers-directory (file-name-as-directory
|
|
(expand-file-name dir))))
|
|
(cd dir))
|
|
|
|
(defun shell-resync-dirs ()
|
|
"Resync the buffer's idea of the current directory stack.
|
|
This command queries the shell with the command bound to
|
|
`shell-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 shell-dirstack-query) (insert "\n")
|
|
(sit-for 0) ; force redisplay
|
|
(comint-send-string proc shell-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) (1- (match-end 0))))
|
|
(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 (concat comint-file-name-prefix
|
|
(substring dl (match-beginning 1)
|
|
(match-end 1)))
|
|
ds))
|
|
(setq i (match-end 0)))
|
|
(let ((ds (nreverse ds)))
|
|
(condition-case nil
|
|
(progn (shell-cd (car ds))
|
|
(setq shell-dirstack (cdr ds)
|
|
shell-last-dir (car shell-dirstack))
|
|
(shell-dirstack-message))
|
|
(error (message "Couldn't cd")))))))
|
|
|
|
;;; For your typing convenience:
|
|
(defalias 'dirs 'shell-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 shell-dirstack-message ()
|
|
(when shell-dirtrack-verbose
|
|
(let* ((msg "")
|
|
(ds (cons default-directory shell-dirstack))
|
|
(home (expand-file-name (concat comint-file-name-prefix "~/")))
|
|
(homelen (length home)))
|
|
(while ds
|
|
(let ((dir (car ds)))
|
|
(and (>= (length dir) homelen)
|
|
(string= home (substring dir 0 homelen))
|
|
(setq dir (concat "~/" (substring dir homelen))))
|
|
;; Strip off comint-file-name-prefix if present.
|
|
(and comint-file-name-prefix
|
|
(>= (length dir) (length comint-file-name-prefix))
|
|
(string= comint-file-name-prefix
|
|
(substring dir 0 (length comint-file-name-prefix)))
|
|
(setq dir (substring dir (length comint-file-name-prefix)))
|
|
(setcar ds dir))
|
|
(setq msg (concat msg (directory-file-name dir) " "))
|
|
(setq ds (cdr ds))))
|
|
(message "%s" msg))))
|
|
|
|
;; This was mostly copied from shell-resync-dirs.
|
|
(defun shell-snarf-envar (var)
|
|
"Return as a string the shell's value of environment variable VAR."
|
|
(let* ((cmd (format "printenv '%s'\n" var))
|
|
(proc (get-buffer-process (current-buffer)))
|
|
(pmark (process-mark proc)))
|
|
(goto-char pmark)
|
|
(insert cmd)
|
|
(sit-for 0) ; force redisplay
|
|
(comint-send-string proc cmd)
|
|
(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
|
|
(buffer-substring (match-beginning 0) (1- (match-end 0)))))
|
|
|
|
(defun shell-copy-environment-variable (variable)
|
|
"Copy the environment variable VARIABLE from the subshell to Emacs.
|
|
This command reads the value of the specified environment variable
|
|
in the shell, and sets the same environment variable in Emacs
|
|
\(what `getenv' in Emacs would return) to that value.
|
|
That value will affect any new subprocesses that you subsequently start
|
|
from Emacs."
|
|
(interactive (list (read-envvar-name "\
|
|
Copy Shell environment variable to Emacs: ")))
|
|
(setenv variable (shell-snarf-envar variable)))
|
|
|
|
(defun shell-forward-command (&optional arg)
|
|
"Move forward across ARG shell command(s). Does not cross lines.
|
|
See `shell-command-regexp'."
|
|
(interactive "p")
|
|
(let ((limit (save-excursion (end-of-line nil) (point))))
|
|
(if (re-search-forward (concat shell-command-regexp "\\([;&|][\t ]*\\)+")
|
|
limit 'move arg)
|
|
(skip-syntax-backward " "))))
|
|
|
|
|
|
(defun shell-backward-command (&optional arg)
|
|
"Move backward across ARG shell command(s). Does not cross lines.
|
|
See `shell-command-regexp'."
|
|
(interactive "p")
|
|
(let ((limit (save-excursion (comint-bol nil) (point))))
|
|
(when (> limit (point))
|
|
(setq limit (line-beginning-position)))
|
|
(skip-syntax-backward " " limit)
|
|
(if (re-search-backward
|
|
(format "[;&|]+[\t ]*\\(%s\\)" shell-command-regexp) limit 'move arg)
|
|
(progn (goto-char (match-beginning 1))
|
|
(skip-chars-forward ";&|")))))
|
|
|
|
(defun shell-dynamic-complete-command ()
|
|
"Dynamically complete the command at point.
|
|
This function is similar to `comint-dynamic-complete-filename', except that it
|
|
searches `exec-path' (minus the trailing emacs library path) for completion
|
|
candidates. Note that this may not be the same as the shell's idea of the
|
|
path.
|
|
|
|
Completion is dependent on the value of `shell-completion-execonly', plus
|
|
those that effect file completion. See `shell-dynamic-complete-as-command'.
|
|
|
|
Returns t if successful."
|
|
(interactive)
|
|
(let ((filename (comint-match-partial-filename)))
|
|
(if (and filename
|
|
(save-match-data (not (string-match "[~/]" filename)))
|
|
(eq (match-beginning 0)
|
|
(save-excursion (shell-backward-command 1) (point))))
|
|
(prog2 (message "Completing command name...")
|
|
(shell-dynamic-complete-as-command)))))
|
|
|
|
|
|
(defun shell-dynamic-complete-as-command ()
|
|
"Dynamically complete at point as a command.
|
|
See `shell-dynamic-complete-filename'. Returns t if successful."
|
|
(let* ((filename (or (comint-match-partial-filename) ""))
|
|
(pathnondir (file-name-nondirectory filename))
|
|
(paths (cdr (reverse exec-path)))
|
|
(cwd (file-name-as-directory (expand-file-name default-directory)))
|
|
(ignored-extensions
|
|
(and comint-completion-fignore
|
|
(mapconcat (function (lambda (x) (concat (regexp-quote x) "$")))
|
|
comint-completion-fignore "\\|")))
|
|
(path "") (comps-in-path ()) (file "") (filepath "") (completions ()))
|
|
;; Go thru each path in the search path, finding completions.
|
|
(while paths
|
|
(setq path (file-name-as-directory (comint-directory (or (car paths) ".")))
|
|
comps-in-path (and (file-accessible-directory-p path)
|
|
(file-name-all-completions pathnondir path)))
|
|
;; Go thru each completion found, to see whether it should be used.
|
|
(while comps-in-path
|
|
(setq file (car comps-in-path)
|
|
filepath (concat path file))
|
|
(if (and (not (member file completions))
|
|
(not (and ignored-extensions
|
|
(string-match ignored-extensions file)))
|
|
(or (string-equal path cwd)
|
|
(not (file-directory-p filepath)))
|
|
(or (null shell-completion-execonly)
|
|
(file-executable-p filepath)))
|
|
(setq completions (cons file completions)))
|
|
(setq comps-in-path (cdr comps-in-path)))
|
|
(setq paths (cdr paths)))
|
|
;; OK, we've got a list of completions.
|
|
(let ((success (let ((comint-completion-addsuffix nil))
|
|
(comint-dynamic-simple-complete pathnondir completions))))
|
|
(if (and (memq success '(sole shortest)) comint-completion-addsuffix
|
|
(not (file-directory-p (comint-match-partial-filename))))
|
|
(insert " "))
|
|
success)))
|
|
|
|
|
|
(defun shell-match-partial-variable ()
|
|
"Return the shell variable at point, or nil if none is found."
|
|
(save-excursion
|
|
(let ((limit (point)))
|
|
(if (re-search-backward "[^A-Za-z0-9_{}]" nil 'move)
|
|
(or (looking-at "\\$") (forward-char 1)))
|
|
;; Anchor the search forwards.
|
|
(if (or (eolp) (looking-at "[^A-Za-z0-9_{}$]"))
|
|
nil
|
|
(re-search-forward "\\$?{?[A-Za-z0-9_]*}?" limit)
|
|
(buffer-substring (match-beginning 0) (match-end 0))))))
|
|
|
|
|
|
(defun shell-dynamic-complete-environment-variable ()
|
|
"Dynamically complete the environment variable at point.
|
|
Completes if after a variable, i.e., if it starts with a \"$\".
|
|
See `shell-dynamic-complete-as-environment-variable'.
|
|
|
|
This function is similar to `comint-dynamic-complete-filename', except that it
|
|
searches `process-environment' for completion candidates. Note that this may
|
|
not be the same as the interpreter's idea of variable names. The main problem
|
|
with this type of completion is that `process-environment' is the environment
|
|
which Emacs started with. Emacs does not track changes to the environment made
|
|
by the interpreter. Perhaps it would be more accurate if this function was
|
|
called `shell-dynamic-complete-process-environment-variable'.
|
|
|
|
Returns non-nil if successful."
|
|
(interactive)
|
|
(let ((variable (shell-match-partial-variable)))
|
|
(if (and variable (string-match "^\\$" variable))
|
|
(prog2 (message "Completing variable name...")
|
|
(shell-dynamic-complete-as-environment-variable)))))
|
|
|
|
|
|
(defun shell-dynamic-complete-as-environment-variable ()
|
|
"Dynamically complete at point as an environment variable.
|
|
Used by `shell-dynamic-complete-environment-variable'.
|
|
Uses `comint-dynamic-simple-complete'."
|
|
(let* ((var (or (shell-match-partial-variable) ""))
|
|
(variable (substring var (or (string-match "[^$({]\\|$" var) 0)))
|
|
(variables (mapcar (function (lambda (x)
|
|
(substring x 0 (string-match "=" x))))
|
|
process-environment))
|
|
(addsuffix comint-completion-addsuffix)
|
|
(comint-completion-addsuffix nil)
|
|
(success (comint-dynamic-simple-complete variable variables)))
|
|
(if (memq success '(sole shortest))
|
|
(let* ((var (shell-match-partial-variable))
|
|
(variable (substring var (string-match "[^$({]" var)))
|
|
(protection (cond ((string-match "{" var) "}")
|
|
((string-match "(" var) ")")
|
|
(t "")))
|
|
(suffix (cond ((null addsuffix) "")
|
|
((file-directory-p
|
|
(comint-directory (getenv variable))) "/")
|
|
(t " "))))
|
|
(insert protection suffix)))
|
|
success))
|
|
|
|
|
|
(defun shell-replace-by-expanded-directory ()
|
|
"Expand directory stack reference before point.
|
|
Directory stack references are of the form \"=digit\" or \"=-\".
|
|
See `default-directory' and `shell-dirstack'.
|
|
|
|
Returns t if successful."
|
|
(interactive)
|
|
(if (comint-match-partial-filename)
|
|
(save-excursion
|
|
(goto-char (match-beginning 0))
|
|
(let ((stack (cons default-directory shell-dirstack))
|
|
(index (cond ((looking-at "=-/?")
|
|
(length shell-dirstack))
|
|
((looking-at "=\\([0-9]+\\)/?")
|
|
(string-to-number
|
|
(buffer-substring
|
|
(match-beginning 1) (match-end 1)))))))
|
|
(cond ((null index)
|
|
nil)
|
|
((>= index (length stack))
|
|
(error "Directory stack not that deep"))
|
|
(t
|
|
(replace-match (file-name-as-directory (nth index stack)) t t)
|
|
(message "Directory item: %d" index)
|
|
t))))))
|
|
|
|
(provide 'shell)
|
|
|
|
;;; shell.el ends here
|