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1 ;;; shell.el --- specialized comint.el for running the shell.
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2
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3 ;; Copyright (C) 1988, 1993, 1994, 1995 Free Software Foundation, Inc.
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4
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5 ;; Author: Olin Shivers <shivers@cs.cmu.edu>
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6 ;; Maintainer: Simon Marshall <simon@gnu.ai.mit.edu>
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7 ;; Keywords: processes
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8
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9 ;; This file is part of XEmacs.
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10
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11 ;; XEmacs is free software; you can redistribute it and/or modify it
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12 ;; under the terms of the GNU General Public License as published by
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13 ;; the Free Software Foundation; either version 2, or (at your option)
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14 ;; any later version.
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15
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16 ;; XEmacs is distributed in the hope that it will be useful, but
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17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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19 ;; General Public License for more details.
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20
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21 ;; You should have received a copy of the GNU General Public License
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22 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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23 ;; Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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24
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25 ;;; Synched up with: FSF 19.30.
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26
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27 ;;; Commentary:
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28
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29 ;;; Please send me bug reports, bug fixes, and extensions, so that I can
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30 ;;; merge them into the master source.
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31 ;;; - Olin Shivers (shivers@cs.cmu.edu)
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32 ;;; - Simon Marshall (simon@gnu.ai.mit.edu)
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33
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34 ;;; This file defines a a shell-in-a-buffer package (shell mode) built
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35 ;;; on top of comint mode. This is actually cmushell with things
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36 ;;; renamed to replace its counterpart in Emacs 18. cmushell is more
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37 ;;; featureful, robust, and uniform than the Emacs 18 version.
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38
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39 ;;; Since this mode is built on top of the general command-interpreter-in-
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40 ;;; a-buffer mode (comint mode), it shares a common base functionality,
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41 ;;; and a common set of bindings, with all modes derived from comint mode.
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42 ;;; This makes these modes easier to use.
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43
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44 ;;; For documentation on the functionality provided by comint mode, and
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45 ;;; the hooks available for customising it, see the file comint.el.
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46 ;;; For further information on shell mode, see the comments below.
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47
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48 ;;; Needs fixin:
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49 ;;; When sending text from a source file to a subprocess, the process-mark can
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50 ;;; move off the window, so you can lose sight of the process interactions.
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51 ;;; Maybe I should ensure the process mark is in the window when I send
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52 ;;; text to the process? Switch selectable?
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53
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54 ;; YOUR .EMACS FILE
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55 ;;=============================================================================
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56 ;; Some suggestions for your .emacs file.
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57 ;;
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58 ;; ;; Define M-# to run some strange command:
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59 ;; (eval-after-load "shell"
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60 ;; '(define-key shell-mode-map "\M-#" 'shells-dynamic-spell))
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61
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62 ;;; Brief Command Documentation:
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63 ;;;============================================================================
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64 ;;; Comint Mode Commands: (common to shell and all comint-derived modes)
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65 ;;;
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66 ;;; m-p comint-previous-input Cycle backwards in input history
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67 ;;; m-n comint-next-input Cycle forwards
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68 ;;; m-r comint-previous-matching-input Previous input matching a regexp
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69 ;;; m-s comint-next-matching-input Next input that matches
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70 ;;; m-c-l comint-show-output Show last batch of process output
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71 ;;; return comint-send-input
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72 ;;; c-d comint-delchar-or-maybe-eof Delete char unless at end of buff.
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73 ;;; c-c c-a comint-bol Beginning of line; skip prompt
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74 ;;; c-c c-u comint-kill-input ^u
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75 ;;; c-c c-w backward-kill-word ^w
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76 ;;; c-c c-c comint-interrupt-subjob ^c
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77 ;;; c-c c-z comint-stop-subjob ^z
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78 ;;; c-c c-\ comint-quit-subjob ^\
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79 ;;; c-c c-o comint-kill-output Delete last batch of process output
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80 ;;; c-c c-r comint-show-output Show last batch of process output
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81 ;;; c-c c-h comint-dynamic-list-input-ring List input history
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82 ;;; send-invisible Read line w/o echo & send to proc
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83 ;;; comint-continue-subjob Useful if you accidentally suspend
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84 ;;; top-level job
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85 ;;; comint-mode-hook is the comint mode hook.
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86
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87 ;;; Shell Mode Commands:
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88 ;;; shell Fires up the shell process
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89 ;;; tab comint-dynamic-complete Complete filename/command/history
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90 ;;; m-? comint-dynamic-list-filename-completions
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91 ;;; List completions in help buffer
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92 ;;; m-c-f shell-forward-command Forward a shell command
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93 ;;; m-c-b shell-backward-command Backward a shell command
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94 ;;; dirs Resync the buffer's dir stack
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95 ;;; dirtrack-toggle Turn dir tracking on/off
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96 ;;; comint-strip-ctrl-m Remove trailing ^Ms from output
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97 ;;;
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98 ;;; The shell mode hook is shell-mode-hook
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99 ;;; comint-prompt-regexp is initialised to shell-prompt-pattern, for backwards
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100 ;;; compatibility.
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101
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102 ;;; Read the rest of this file for more information.
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103
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104 ;;; Customization and Buffer Variables
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105 ;;; ===========================================================================
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106 ;;;
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107
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108 ;;; Code:
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109
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110 (require 'comint)
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111
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112 ;;;###autoload
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113 (defvar shell-prompt-pattern (purecopy "^[^#$%>\n]*[#$%>] *")
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114 "Regexp to match prompts in the inferior shell.
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115 Defaults to \"^[^#$%>\\n]*[#$%>] *\", which works pretty well.
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116 This variable is used to initialise `comint-prompt-regexp' in the
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117 shell buffer.
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118
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119 The pattern should probably not match more than one line. If it does,
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120 shell-mode may become confused trying to distinguish prompt from input
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121 on lines which don't start with a prompt.
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122
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123 This is a fine thing to set in your `.emacs' file.")
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124
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125 (defvar shell-completion-fignore nil
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126 "*List of suffixes to be disregarded during file/command completion.
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127 This variable is used to initialize `comint-completion-fignore' in the shell
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128 buffer. The default is nil, for compatibility with most shells.
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129 Some people like (\"~\" \"#\" \"%\").
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130
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131 This is a fine thing to set in your `.emacs' file.")
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132
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133 ;jwz: turned this off; it's way too broken.
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134 (defvar shell-delimiter-argument-list nil ;'(?\| ?& ?< ?> ?\( ?\) ?\;
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135 "List of characters to recognise as separate arguments.
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136 This variable is used to initialize `comint-delimiter-argument-list' in the
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137 shell buffer. The default is (?\\| ?& ?< ?> ?\\( ?\\) ?\\;).
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138
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139 This is a fine thing to set in your `.emacs' file.")
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140
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141 (defvar shell-file-name-quote-list
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142 (append shell-delimiter-argument-list '(?\ ?\* ?\! ?\" ?\' ?\`))
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143 "List of characters to quote when in a file name.
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144 This variable is used to initialize `comint-file-name-quote-list' in the
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145 shell buffer. The default is (?\ ?\* ?\! ?\" ?\' ?\`) plus characters
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146 in `shell-delimiter-argument-list'.
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147
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148 This is a fine thing to set in your `.emacs' file.")
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149
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150 (defvar shell-dynamic-complete-functions
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151 '(comint-replace-by-expanded-history
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152 shell-dynamic-complete-environment-variable
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153 shell-dynamic-complete-command
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154 shell-replace-by-expanded-directory
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155 comint-dynamic-complete-filename)
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156 "List of functions called to perform completion.
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157 This variable is used to initialise `comint-dynamic-complete-functions' in the
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158 shell buffer.
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159
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160 This is a fine thing to set in your `.emacs' file.")
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161
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162 (defvar shell-command-regexp "[^;&|\n]+"
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163 "*Regexp to match a single command within a pipeline.
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164 This is used for directory tracking and does not do a perfect job.")
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165
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166 (defvar shell-completion-execonly t
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167 "*If non-nil, use executable files only for completion candidates.
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168 This mirrors the optional behavior of tcsh.
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169
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170 Detecting executability of files may slow command completion considerably.")
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171
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172 (defvar shell-multiple-shells nil
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173 "*If non-nil, each time shell mode is invoked, a new shell is made")
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174
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175 (defvar shell-popd-regexp "popd"
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176 "*Regexp to match subshell commands equivalent to popd.")
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177
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178 (defvar shell-pushd-regexp "pushd"
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179 "*Regexp to match subshell commands equivalent to pushd.")
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180
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181 (defvar shell-pushd-tohome nil
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182 "*If non-nil, make pushd with no arg behave as \"pushd ~\" (like cd).
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183 This mirrors the optional behavior of tcsh.")
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184
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185 (defvar shell-pushd-dextract nil
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186 "*If non-nil, make \"pushd +n\" pop the nth dir to the stack top.
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187 This mirrors the optional behavior of tcsh.")
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188
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189 (defvar shell-pushd-dunique nil
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190 "*If non-nil, make pushd only add unique directories to the stack.
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191 This mirrors the optional behavior of tcsh.")
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192
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193 (defvar shell-cd-regexp "cd"
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194 "*Regexp to match subshell commands equivalent to cd.")
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195
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196 (defvar explicit-shell-file-name nil
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197 "*If non-nil, is file name to use for explicitly requested inferior shell.")
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198
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199 (defvar explicit-csh-args
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200 (if (eq system-type 'hpux)
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201 ;; -T persuades HP's csh not to think it is smarter
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202 ;; than us about what terminal modes to use.
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203 '("-i" "-T")
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204 '("-i"))
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205 "*Args passed to inferior shell by M-x shell, if the shell is csh.
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206 Value is a list of strings, which may be nil.")
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207
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208 (defvar shell-input-autoexpand 'history
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209 "*If non-nil, expand input command history references on completion.
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210 This mirrors the optional behavior of tcsh (its autoexpand and histlit).
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211
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212 If the value is `input', then the expansion is seen on input.
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213 If the value is `history', then the expansion is only when inserting
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214 into the buffer's input ring. See also `comint-magic-space' and
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215 `comint-dynamic-complete'.
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216
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217 This variable supplies a default for `comint-input-autoexpand',
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218 for Shell mode only.")
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219
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220 (defvar shell-dirstack nil
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221 "List of directories saved by pushd in this buffer's shell.
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222 Thus, this does not include the shell's current directory.")
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223
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224 (defvar shell-dirtrackp t
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225 "Non-nil in a shell buffer means directory tracking is enabled.")
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226
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227 (defvar shell-last-dir nil
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228 "Keep track of last directory for ksh `cd -' command.")
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229
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230 (defvar shell-dirstack-query nil
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231 "Command used by `shell-resync-dirs' to query the shell.")
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232
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233 (defvar shell-mode-map nil)
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234 (if (not shell-mode-map)
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235 (let ((map (make-keymap)))
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236 (set-keymap-parents map (list comint-mode-map))
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237 (set-keymap-name map 'shell-mode-map)
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238 (define-key map "\C-c\C-f" 'shell-forward-command)
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239 (define-key map "\C-c\C-b" 'shell-backward-command)
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240 (define-key map "\t" 'comint-dynamic-complete)
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241 (define-key map "\M-?" 'comint-dynamic-list-filename-completions)
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242 ;; XEmacs: this is a pretty common operation for those of us
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243 ;; who use directory aliases ... someone shoot me if they
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244 ;; don't like this binding. Another possibility is C-c C-s
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245 ;; but that's way awkward.
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246 (define-key map "\M-\C-m" 'shell-resync-dirs)
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247 (setq shell-mode-map map)))
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248
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249 (defvar shell-mode-hook nil
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250 "*Hook for customising Shell mode.")
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251
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252 (defvar shell-font-lock-keywords
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253 (list (cons shell-prompt-pattern 'font-lock-keyword-face)
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254 '("[ \t]\\([+-][^ \t\n]+\\)" 1 font-lock-comment-face)
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255 '("^[^ \t\n]+:.*" . font-lock-string-face)
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256 '("^\\[[1-9][0-9]*\\]" . font-lock-string-face))
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257 "Additional expressions to highlight in Shell mode.")
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258 (put 'shell-mode 'font-lock-defaults '(shell-font-lock-keywords t))
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259
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260 ;;; Basic Procedures
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261 ;;; ===========================================================================
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262 ;;;
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263
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264 (defun shell-mode ()
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265 "Major mode for interacting with an inferior shell.
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266 \\<shell-mode-map>\\[comint-send-input] after the end of the process' output sends the text from
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267 the end of process to the end of the current line.
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268 \\[comint-send-input] before end of process output copies the current line minus the
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269 prompt to the end of the buffer and sends it (\\[comint-copy-old-input] just copies
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270 the current line).
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271 \\[send-invisible] reads a line of text without echoing it, and sends it to
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272 the shell. This is useful for entering passwords. Or, add the function
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273 `comint-watch-for-password-prompt' to `comint-output-filter-functions'.
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274
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275 If you want to make multiple shell buffers, rename the `*shell*' buffer
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276 using \\[rename-buffer] or \\[rename-uniquely] and start a new shell.
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277
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278 If you want to make shell buffers limited in length, add the function
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279 `comint-truncate-buffer' to `comint-output-filter-functions'.
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280
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281 If you accidentally suspend your process, use \\[comint-continue-subjob]
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282 to continue it.
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283
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284 `cd', `pushd' and `popd' commands given to the shell are watched by Emacs to
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285 keep this buffer's default directory the same as the shell's working directory.
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286 While directory tracking is enabled, the shell's working directory is displayed
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287 by \\[list-buffers] or \\[mouse-buffer-menu] in the `File' field.
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288 \\[shell-resync-dirs] queries the shell and resyncs Emacs' idea of what the
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289 current directory stack is.
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290 \\[shell-dirtrack-toggle] turns directory tracking on and off.
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291
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292 \\{shell-mode-map}
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293 Customization: Entry to this mode runs the hooks on `comint-mode-hook' and
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294 `shell-mode-hook' (in that order). Before each input, the hooks on
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295 `comint-input-filter-functions' are run. After each shell output, the hooks
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296 on `comint-output-filter-functions' are run.
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297
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298 Variable `shell-multiple-shells' will automatically generate a new shell each
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299 time it is invoked.
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300
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301 Variables `shell-cd-regexp', `shell-pushd-regexp' and `shell-popd-regexp'
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302 are used to match their respective commands, while `shell-pushd-tohome',
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303 `shell-pushd-dextract' and `shell-pushd-dunique' control the behavior of the
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304 relevant command.
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305
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306 Variables `comint-completion-autolist', `comint-completion-addsuffix',
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307 `comint-completion-recexact' and `comint-completion-fignore' control the
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308 behavior of file name, command name and variable name completion. Variable
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309 `shell-completion-execonly' controls the behavior of command name completion.
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310 Variable `shell-completion-fignore' is used to initialise the value of
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311 `comint-completion-fignore'.
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312
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313 Variables `comint-input-ring-file-name' and `comint-input-autoexpand' control
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314 the initialisation of the input ring history, and history expansion.
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315
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316 Variables `comint-output-filter-functions', a hook, and
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317 `comint-scroll-to-bottom-on-input' and `comint-scroll-to-bottom-on-output'
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318 control whether input and output cause the window to scroll to the end of the
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319 buffer."
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320 (interactive)
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321 (comint-mode)
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322 (setq major-mode 'shell-mode)
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323 (setq mode-name "Shell")
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324 (use-local-map shell-mode-map)
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325 (make-local-variable 'comint-prompt-regexp)
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326 (setq comint-prompt-regexp shell-prompt-pattern)
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327 (setq comint-completion-fignore shell-completion-fignore)
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328 (make-local-variable 'comint-delimiter-argument-list)
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329 (setq comint-delimiter-argument-list shell-delimiter-argument-list)
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330 (make-local-variable 'comint-after-partial-filename-command)
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331 (setq comint-after-partial-filename-command 'shell-after-partial-filename)
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332 (make-local-variable 'comint-get-current-command)
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333 (setq comint-get-current-command 'shell-get-current-command)
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334 (make-local-variable 'comint-dynamic-complete-command-command)
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335 (setq comint-dynamic-complete-command-command 'shell-dynamic-complete-command)
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336 (setq comint-file-name-quote-list shell-file-name-quote-list)
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337 (setq comint-dynamic-complete-functions shell-dynamic-complete-functions)
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338 (make-local-variable 'paragraph-start)
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339 (setq paragraph-start comint-prompt-regexp)
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340 (make-local-variable 'shell-dirstack)
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341 (setq shell-dirstack nil)
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342 (make-local-variable 'shell-last-dir)
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343 (setq shell-last-dir nil)
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344 (make-local-variable 'shell-dirtrackp)
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345 (setq shell-dirtrackp t)
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346 (add-hook 'comint-input-filter-functions 'shell-directory-tracker nil t)
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347 (setq comint-input-autoexpand shell-input-autoexpand)
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348 (make-local-variable 'list-buffers-directory)
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349 (setq list-buffers-directory (expand-file-name default-directory))
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350 ;; shell-dependent assignments.
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|
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351 (let ((shell (file-name-nondirectory (car
|
|
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352 (process-command (get-buffer-process (current-buffer)))))))
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353 (setq comint-input-ring-file-name
|
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354 (or (getenv "HISTFILE")
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355 (cond ((string-equal shell "bash") "~/.bash_history")
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356 ((string-equal shell "ksh") "~/.sh_history")
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357 (t "~/.history"))))
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358 (if (or (equal comint-input-ring-file-name "")
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359 (equal (file-truename comint-input-ring-file-name) "/dev/null"))
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|
|
360 (setq comint-input-ring-file-name nil))
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361 (setq shell-dirstack-query
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362 (if (string-match "^k?sh$" shell) "pwd" "dirs")))
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363 (run-hooks 'shell-mode-hook)
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364 (comint-read-input-ring t)
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|
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365 (shell-dirstack-message))
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366
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367
|
|
|
368 ;;;###autoload
|
|
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369 (defun shell ()
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370 "Run an inferior shell, with I/O through buffer *shell*.
|
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371 If buffer exists but shell process is not running, make new shell.
|
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372 If buffer exists and shell process is running,
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373 just switch to buffer `*shell*'.
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374 Program used comes from variable `explicit-shell-file-name',
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375 or (if that is nil) from the ESHELL environment variable,
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376 or else from SHELL if there is no ESHELL.
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377 If a file `~/.emacs_SHELLNAME' exists, it is given as initial input
|
|
|
378 (Note that this may lose due to a timing error if the shell
|
|
|
379 discards input when it starts up.)
|
|
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380 The buffer is put in Shell mode, giving commands for sending input
|
|
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381 and controlling the subjobs of the shell. See `shell-mode'.
|
|
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382 See also the variable `shell-prompt-pattern'.
|
|
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383
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|
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384 The shell file name (sans directories) is used to make a symbol name
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385 such as `explicit-csh-args'. If that symbol is a variable,
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386 its value is used as a list of arguments when invoking the shell.
|
|
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387 Otherwise, one argument `-i' is passed to the shell.
|
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388
|
|
|
389 \(Type \\[describe-mode] in the shell buffer for a list of commands.)"
|
|
|
390 (interactive)
|
|
|
391 (let ((buffer "*shell*")
|
|
|
392 (buffer-name (if shell-multiple-shells
|
|
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393 "*shell*"
|
|
|
394 "shell")))
|
|
|
395 (cond ((or shell-multiple-shells
|
|
|
396 (not (comint-check-proc buffer)))
|
|
|
397 (let* ((prog (or explicit-shell-file-name
|
|
|
398 (getenv "ESHELL")
|
|
|
399 (getenv "SHELL")
|
|
|
400 "/bin/sh"))
|
|
|
401 (name (file-name-nondirectory prog))
|
|
|
402 (startfile (concat "~/.emacs_" name))
|
|
|
403 (xargs-name (intern-soft (concat "explicit-" name "-args"))))
|
|
|
404 (setq buffer (set-buffer (apply 'make-comint buffer-name prog
|
|
|
405 (if (file-exists-p startfile)
|
|
|
406 startfile)
|
|
|
407 (if (and xargs-name
|
|
|
408 (boundp xargs-name))
|
|
|
409 (symbol-value xargs-name)
|
|
|
410 '("-i")))))
|
|
|
411 (shell-mode))))
|
|
|
412 (pop-to-buffer buffer)
|
|
|
413 (if shell-multiple-shells
|
|
|
414 (rename-buffer (generate-new-buffer-name "*shell*")))
|
|
|
415 ))
|
|
|
416
|
|
|
417 ;;; Don't do this when shell.el is loaded, only while dumping.
|
|
|
418 ;;;###autoload (add-hook 'same-window-buffer-names "*shell*")
|
|
|
419
|
|
|
420 ;;; Directory tracking
|
|
|
421 ;;; ===========================================================================
|
|
|
422 ;;; This code provides the shell mode input sentinel
|
|
|
423 ;;; SHELL-DIRECTORY-TRACKER
|
|
|
424 ;;; that tracks cd, pushd, and popd commands issued to the shell, and
|
|
|
425 ;;; changes the current directory of the shell buffer accordingly.
|
|
|
426 ;;;
|
|
|
427 ;;; This is basically a fragile hack, although it's more accurate than
|
|
|
428 ;;; the version in Emacs 18's shell.el. It has the following failings:
|
|
|
429 ;;; 1. It doesn't know about the cdpath shell variable.
|
|
|
430 ;;; 2. It cannot infallibly deal with command sequences, though it does well
|
|
|
431 ;;; with these and with ignoring commands forked in another shell with ()s.
|
|
|
432 ;;; 3. More generally, any complex command is going to throw it. Otherwise,
|
|
|
433 ;;; you'd have to build an entire shell interpreter in emacs lisp. Failing
|
|
|
434 ;;; that, there's no way to catch shell commands where cd's are buried
|
|
|
435 ;;; inside conditional expressions, aliases, and so forth.
|
|
|
436 ;;;
|
|
|
437 ;;; The whole approach is a crock. Shell aliases mess it up. File sourcing
|
|
|
438 ;;; messes it up. You run other processes under the shell; these each have
|
|
|
439 ;;; separate working directories, and some have commands for manipulating
|
|
|
440 ;;; their w.d.'s (e.g., the lcd command in ftp). Some of these programs have
|
|
|
441 ;;; commands that do *not* affect the current w.d. at all, but look like they
|
|
|
442 ;;; do (e.g., the cd command in ftp). In shells that allow you job
|
|
|
443 ;;; control, you can switch between jobs, all having different w.d.'s. So
|
|
|
444 ;;; simply saying %3 can shift your w.d..
|
|
|
445 ;;;
|
|
|
446 ;;; The solution is to relax, not stress out about it, and settle for
|
|
|
447 ;;; a hack that works pretty well in typical circumstances. Remember
|
|
|
448 ;;; that a half-assed solution is more in keeping with the spirit of Unix,
|
|
|
449 ;;; anyway. Blech.
|
|
|
450 ;;;
|
|
|
451 ;;; One good hack not implemented here for users of programmable shells
|
|
|
452 ;;; is to program up the shell w.d. manipulation commands to output
|
|
|
453 ;;; a coded command sequence to the tty. Something like
|
|
|
454 ;;; ESC | <cwd> |
|
|
|
455 ;;; where <cwd> is the new current working directory. Then trash the
|
|
|
456 ;;; directory tracking machinery currently used in this package, and
|
|
|
457 ;;; replace it with a process filter that watches for and strips out
|
|
|
458 ;;; these messages.
|
|
|
459
|
|
|
460 (defun shell-directory-tracker (str)
|
|
|
461 "Tracks cd, pushd and popd commands issued to the shell.
|
|
|
462 This function is called on each input passed to the shell.
|
|
|
463 It watches for cd, pushd and popd commands and sets the buffer's
|
|
|
464 default directory to track these commands.
|
|
|
465
|
|
|
466 You may toggle this tracking on and off with \\[shell-dirtrack-toggle].
|
|
|
467 If emacs gets confused, you can resync with the shell
|
|
|
468 with \\[shell-resync-dirs].
|
|
|
469
|
|
|
470 See variables `shell-cd-regexp', `shell-pushd-regexp', and `shell-popd-regexp',
|
|
|
471 while `shell-pushd-tohome', `shell-pushd-dextract' and `shell-pushd-dunique'
|
|
|
472 control the behavior of the relevant command.
|
|
|
473
|
|
|
474 Environment variables are expanded, see function `substitute-in-file-name'."
|
|
|
475 (if shell-dirtrackp
|
|
|
476 ;; We fail gracefully if we think the command will fail in the shell.
|
|
|
477 (condition-case err
|
|
|
478 (let ((start (progn (string-match "^[; \t]*" str) ; skip whitespace
|
|
|
479 (match-end 0)))
|
|
|
480 end cmd arg1)
|
|
|
481 (while (string-match shell-command-regexp str start)
|
|
|
482 (setq end (match-end 0)
|
|
|
483 cmd (comint-arguments (substring str start end) 0 0)
|
|
|
484 arg1 (comint-arguments (substring str start end) 1 1))
|
|
|
485 (cond ((string-match (concat "\\`\\(" shell-popd-regexp
|
|
|
486 "\\)\\($\\|[ \t]\\)")
|
|
|
487 cmd)
|
|
|
488 (shell-process-popd (substitute-in-file-name arg1)))
|
|
|
489 ((string-match (concat "\\`\\(" shell-pushd-regexp
|
|
|
490 "\\)\\($\\|[ \t]\\)")
|
|
|
491 cmd)
|
|
|
492 (shell-process-pushd (substitute-in-file-name arg1)))
|
|
|
493 ((string-match (concat "\\`\\(" shell-cd-regexp
|
|
|
494 "\\)\\($\\|[ \t]\\)")
|
|
|
495 cmd)
|
|
|
496 (shell-process-cd (substitute-in-file-name arg1))))
|
|
|
497 (setq start (progn (string-match "[; \t]*" str end) ; skip again
|
|
|
498 (match-end 0)))))
|
|
|
499 (error
|
|
|
500 ;; XEmacs change
|
|
|
501 (message nil)
|
|
|
502 (display-error err t)))))
|
|
|
503
|
|
|
504 ;; Like `cd', but prepends comint-file-name-prefix to absolute names.
|
|
|
505 (defun shell-cd-1 (dir dirstack)
|
|
|
506 (if shell-dirtrackp
|
|
|
507 (setq list-buffers-directory (file-name-as-directory
|
|
|
508 (expand-file-name dir))))
|
|
|
509 (condition-case nil
|
|
|
510 (progn (if (file-name-absolute-p dir)
|
|
|
511 (cd-absolute (concat comint-file-name-prefix dir))
|
|
|
512 (cd dir))
|
|
|
513 (setq shell-dirstack dirstack)
|
|
|
514 (shell-dirstack-message))
|
|
|
515 (file-error (message "Couldn't cd."))))
|
|
|
516
|
|
|
517 ;;; popd [+n]
|
|
|
518 (defun shell-process-popd (arg)
|
|
|
519 (let ((num (or (shell-extract-num arg) 0)))
|
|
|
520 (cond ((and num (= num 0) shell-dirstack)
|
|
|
521 (shell-cd-1 (car shell-dirstack) (cdr shell-dirstack)))
|
|
|
522 ((and num (> num 0) (<= num (length shell-dirstack)))
|
|
|
523 (let* ((ds (cons nil shell-dirstack))
|
|
|
524 (cell (nthcdr (1- num) ds)))
|
|
|
525 (rplacd cell (cdr (cdr cell)))
|
|
|
526 (setq shell-dirstack (cdr ds))
|
|
|
527 (shell-dirstack-message)))
|
|
|
528 (t
|
|
|
529 (error "Couldn't popd")))))
|
|
|
530
|
|
|
531 ;; Return DIR prefixed with comint-file-name-prefix as appropriate.
|
|
|
532 (defun shell-prefixed-directory-name (dir)
|
|
|
533 (if (= (length comint-file-name-prefix) 0)
|
|
|
534 dir
|
|
|
535 (if (file-name-absolute-p dir)
|
|
|
536 ;; The name is absolute, so prepend the prefix.
|
|
|
537 (concat comint-file-name-prefix dir)
|
|
|
538 ;; For relative name we assume default-directory already has the prefix.
|
|
|
539 (expand-file-name dir))))
|
|
|
540
|
|
|
541 ;;; cd [dir]
|
|
|
542 (defun shell-process-cd (arg)
|
|
|
543 (let ((new-dir (cond ((zerop (length arg)) (concat comint-file-name-prefix
|
|
|
544 "~"))
|
|
|
545 ((string-equal "-" arg) shell-last-dir)
|
|
|
546 (t (shell-prefixed-directory-name arg)))))
|
|
|
547 (setq shell-last-dir default-directory)
|
|
|
548 (shell-cd-1 new-dir shell-dirstack)))
|
|
|
549
|
|
|
550 ;;; pushd [+n | dir]
|
|
|
551 (defun shell-process-pushd (arg)
|
|
|
552 (let ((num (shell-extract-num arg)))
|
|
|
553 (cond ((zerop (length arg))
|
|
|
554 ;; no arg -- swap pwd and car of stack unless shell-pushd-tohome
|
|
|
555 (cond (shell-pushd-tohome
|
|
|
556 (shell-process-pushd (concat comint-file-name-prefix "~")))
|
|
|
557 (shell-dirstack
|
|
|
558 (let ((old default-directory))
|
|
|
559 (shell-cd-1 (car shell-dirstack)
|
|
|
560 (cons old (cdr shell-dirstack)))))
|
|
|
561 (t
|
|
|
562 (message "Directory stack empty."))))
|
|
|
563 ((numberp num)
|
|
|
564 ;; pushd +n
|
|
|
565 (cond ((> num (length shell-dirstack))
|
|
|
566 (message "Directory stack not that deep."))
|
|
|
567 ((= num 0)
|
|
|
568 (error (message "Couldn't cd.")))
|
|
|
569 (shell-pushd-dextract
|
|
|
570 (let ((dir (nth (1- num) shell-dirstack)))
|
|
|
571 (shell-process-popd arg)
|
|
|
572 (shell-process-pushd default-directory)
|
|
|
573 (shell-cd-1 dir shell-dirstack)))
|
|
|
574 (t
|
|
|
575 (let* ((ds (cons default-directory shell-dirstack))
|
|
|
576 (dslen (length ds))
|
|
|
577 (front (nthcdr num ds))
|
|
|
578 (back (reverse (nthcdr (- dslen num) (reverse ds))))
|
|
|
579 (new-ds (append front back)))
|
|
|
580 (shell-cd-1 (car new-ds) (cdr new-ds))))))
|
|
|
581 (t
|
|
|
582 ;; pushd <dir>
|
|
|
583 (let ((old-wd default-directory))
|
|
|
584 (shell-cd-1 (shell-prefixed-directory-name arg)
|
|
|
585 (if (or (null shell-pushd-dunique)
|
|
|
586 (not (member old-wd shell-dirstack)))
|
|
|
587 (cons old-wd shell-dirstack)
|
|
|
588 shell-dirstack)))))))
|
|
|
589
|
|
|
590 ;; If STR is of the form +n, for n>0, return n. Otherwise, nil.
|
|
|
591 (defun shell-extract-num (str)
|
|
|
592 (and (string-match "^\\+[1-9][0-9]*$" str)
|
|
|
593 (string-to-int str)))
|
|
|
594
|
|
|
595
|
|
|
596 (defun shell-dirtrack-toggle ()
|
|
|
597 "Turn directory tracking on and off in a shell buffer."
|
|
|
598 (interactive)
|
|
|
599 (if (setq shell-dirtrackp (not shell-dirtrackp))
|
|
|
600 (setq list-buffers-directory default-directory)
|
|
|
601 (setq list-buffers-directory nil))
|
|
|
602 (message "Directory tracking %s" (if shell-dirtrackp "ON" "OFF")))
|
|
|
603
|
|
|
604 ;;; For your typing convenience:
|
|
|
605 ;; XEmacs: removed this because then `M-x dir' doesn't complete to `dired'
|
|
|
606 ;;(define-function 'dirtrack-toggle 'shell-dirtrack-toggle)
|
|
|
607
|
|
|
608 (defun shell-cd (dir)
|
|
|
609 "Do normal `cd' to DIR, and set `list-buffers-directory'."
|
|
|
610 (if shell-dirtrackp
|
|
|
611 (setq list-buffers-directory (file-name-as-directory
|
|
|
612 (expand-file-name dir))))
|
|
|
613 (cd dir))
|
|
|
614
|
|
|
615 (defun shell-resync-dirs ()
|
|
|
616 "Resync the buffer's idea of the current directory stack.
|
|
|
617 This command queries the shell with the command bound to
|
|
|
618 `shell-dirstack-query' (default \"dirs\"), reads the next
|
|
|
619 line output and parses it to form the new directory stack.
|
|
|
620 DON'T issue this command unless the buffer is at a shell prompt.
|
|
|
621 Also, note that if some other subprocess decides to do output
|
|
|
622 immediately after the query, its output will be taken as the
|
|
|
623 new directory stack -- you lose. If this happens, just do the
|
|
|
624 command again."
|
|
|
625 (interactive)
|
|
|
626 (let* ((proc (get-buffer-process (current-buffer)))
|
|
|
627 (pmark (process-mark proc)))
|
|
|
628 (goto-char pmark)
|
|
|
629 (insert shell-dirstack-query) (insert "\n")
|
|
|
630 (sit-for 0) ; force redisplay
|
|
|
631 (comint-send-string proc shell-dirstack-query)
|
|
|
632 (comint-send-string proc "\n")
|
|
|
633 (set-marker pmark (point))
|
|
|
634 (let ((pt (point))) ; wait for 1 line
|
|
|
635 ;; This extra newline prevents the user's pending input from spoofing us.
|
|
|
636 (insert "\n") (backward-char 1)
|
|
|
637 (while (not (looking-at ".+\n"))
|
|
|
638 (accept-process-output proc)
|
|
|
639 (goto-char pt)
|
|
|
640 ;; kludge to cope with shells that have "stty echo" turned on.
|
|
|
641 ;; of course this will lose if there is only one dir on the stack
|
|
|
642 ;; and it is named "dirs"... -jwz
|
|
|
643 (if (looking-at "^dirs\r?\n") (delete-region (point) (match-end 0)))
|
|
|
644 ))
|
|
|
645 (goto-char pmark) (delete-char 1) ; remove the extra newline
|
|
|
646 ;; That's the dirlist. grab it & parse it.
|
|
|
647 (let* ((dl (buffer-substring (match-beginning 0) (1- (match-end 0))))
|
|
|
648 (dl-len (length dl))
|
|
|
649 (ds '()) ; new dir stack
|
|
|
650 (i 0))
|
|
|
651 (while (< i dl-len)
|
|
|
652 ;; regexp = optional whitespace, (non-whitespace), optional whitespace
|
|
|
653 (string-match "\\s *\\(\\S +\\)\\s *" dl i) ; pick off next dir
|
|
|
654 (setq ds (cons (concat comint-file-name-prefix
|
|
|
655 (substring dl (match-beginning 1)
|
|
|
656 (match-end 1)))
|
|
|
657 ds))
|
|
|
658 (setq i (match-end 0)))
|
|
|
659 (let ((ds (reverse ds)))
|
|
|
660 (shell-cd-1 (car ds) (cdr ds))))))
|
|
|
661
|
|
|
662 ;;; For your typing convenience:
|
|
|
663 ;; XEmacs: removed this because then `M-x dir' doesn't complete to `dired'
|
|
|
664 ;(define-function 'dirs 'shell-resync-dirs)
|
|
|
665
|
|
|
666 ;; XEmacs addition
|
|
|
667 (defvar shell-dirstack-message-hook nil
|
|
|
668 "Hook to run after a cd, pushd or popd event")
|
|
|
669
|
|
|
670 ;;; Show the current dirstack on the message line.
|
|
|
671 ;;; Pretty up dirs a bit by changing "/usr/jqr/foo" to "~/foo".
|
|
|
672 ;;; (This isn't necessary if the dirlisting is generated with a simple "dirs".)
|
|
|
673 ;;; All the commands that mung the buffer's dirstack finish by calling
|
|
|
674 ;;; this guy.
|
|
|
675 (defun shell-dirstack-message ()
|
|
|
676 (let* ((msg "")
|
|
|
677 (ds (cons default-directory shell-dirstack))
|
|
|
678 (home (format "^%s\\(/\\|$\\)" (regexp-quote (getenv "HOME"))))
|
|
|
679 (prefix (and comint-file-name-prefix
|
|
|
680 ;; XEmacs addition: don't turn "/foo" into "foo" !!
|
|
|
681 (not (= 0 (length comint-file-name-prefix)))
|
|
|
682 (format "^%s\\(/\\|$\\)"
|
|
|
683 (regexp-quote comint-file-name-prefix)))))
|
|
|
684 (while ds
|
|
|
685 (let ((dir (car ds)))
|
|
|
686 (if (string-match home dir)
|
|
|
687 (setq dir (concat "~/" (substring dir (match-end 0)))))
|
|
|
688 ;; Strip off comint-file-name-prefix if present.
|
|
|
689 (and prefix (string-match prefix dir)
|
|
|
690 (setq dir (substring dir (match-end 0)))
|
|
|
691 (setcar ds dir)
|
|
|
692 )
|
|
|
693 (setq msg (concat msg dir " "))
|
|
|
694 (setq ds (cdr ds))))
|
|
|
695 ;; XEmacs change
|
|
|
696 (run-hooks 'shell-dirstack-message-hook)
|
|
|
697 (message msg)))
|
|
|
698
|
|
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699
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700 (defun shell-forward-command (&optional arg)
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701 "Move forward across ARG shell command(s). Does not cross lines.
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702 See `shell-command-regexp'."
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703 (interactive "p")
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704 (let ((limit (save-excursion (end-of-line nil) (point))))
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705 (if (re-search-forward (concat shell-command-regexp "\\([;&|][\t ]*\\)+")
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706 limit 'move arg)
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707 (skip-syntax-backward " "))))
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708
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709
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710 (defun shell-backward-command (&optional arg)
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711 "Move backward across ARG shell command(s). Does not cross lines.
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712 See `shell-command-regexp'."
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713 (interactive "p")
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714 (let ((limit (save-excursion (comint-bol nil) (point))))
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715 (if (> limit (point))
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716 (save-excursion (beginning-of-line) (setq limit (point))))
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717 (skip-syntax-backward " " limit)
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718 (if (re-search-backward
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719 (format "[;&|]+[\t ]*\\(%s\\)" shell-command-regexp) limit 'move arg)
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720 (progn (goto-char (match-beginning 1))
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721 (skip-chars-forward ";&|")))))
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722
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723
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724 (defun shell-dynamic-complete-command ()
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725 "Dynamically complete the command at point.
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726 This function is similar to `comint-dynamic-complete-filename', except that it
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727 searches `exec-path' (minus the trailing emacs library path) for completion
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728 candidates. Note that this may not be the same as the shell's idea of the
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729 path.
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730
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731 Completion is dependent on the value of `shell-completion-execonly', plus
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732 those that effect file completion. See `shell-dynamic-complete-as-command'.
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733
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734 Returns t if successful."
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735 (interactive)
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736 (let ((filename (comint-match-partial-filename)))
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737 (if (and filename
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738 (save-match-data (not (string-match "[~/]" filename)))
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739 (eq (match-beginning 0)
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740 (save-excursion (shell-backward-command 1) (point))))
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741 (prog2 (message "Completing command name...")
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742 (shell-dynamic-complete-as-command)))))
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743
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744
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745 (defun shell-dynamic-complete-as-command ()
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746 "Dynamically complete at point as a command.
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747 See `shell-dynamic-complete-filename'. Returns t if successful."
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748 (let* ((filename (or (comint-match-partial-filename) ""))
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749 (pathnondir (file-name-nondirectory filename))
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750 (paths (cdr (reverse exec-path)))
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751 (cwd (file-name-as-directory (expand-file-name default-directory)))
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752 (ignored-extensions
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753 (and comint-completion-fignore
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754 (mapconcat (function (lambda (x) (concat (regexp-quote x) "$")))
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755 comint-completion-fignore "\\|")))
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756 (path "") (comps-in-path ()) (file "") (filepath "") (completions ()))
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757 ;; Go thru each path in the search path, finding completions.
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758 (while paths
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759 (setq path (file-name-as-directory (comint-directory (or (car paths) ".")))
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760 comps-in-path (and (file-accessible-directory-p path)
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761 (file-name-all-completions pathnondir path)))
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762 ;; Go thru each completion found, to see whether it should be used.
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763 (while comps-in-path
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764 (setq file (car comps-in-path)
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765 filepath (concat path file))
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766 (if (and (not (member file completions))
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767 (not (and ignored-extensions
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768 (string-match ignored-extensions file)))
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|
769 (or (string-equal path cwd)
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770 (not (file-directory-p filepath)))
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|
771 (or (null shell-completion-execonly)
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772 (file-executable-p filepath)))
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773 (setq completions (cons file completions)))
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774 (setq comps-in-path (cdr comps-in-path)))
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775 (setq paths (cdr paths)))
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776 ;; OK, we've got a list of completions.
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777 (let ((success (let ((comint-completion-addsuffix nil))
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778 (comint-dynamic-simple-complete pathnondir completions))))
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779 (if (and (memq success '(sole shortest)) comint-completion-addsuffix
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780 (not (file-directory-p (comint-match-partial-filename))))
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781 (insert " "))
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782 success)))
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783
|
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784
|
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785 (defun shell-match-partial-variable ()
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|
786 "Return the variable at point, or nil if non is found."
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|
787 (save-excursion
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|
788 (let ((limit (point)))
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|
789 (if (re-search-backward "[^A-Za-z0-9_{}]" nil 'move)
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|
790 (or (looking-at "\\$") (forward-char 1)))
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|
|
791 ;; Anchor the search forwards.
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|
792 (if (or (eolp) (looking-at "[^A-Za-z0-9_{}$]"))
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|
793 nil
|
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|
794 (re-search-forward "\\$?{?[A-Za-z0-9_]*}?" limit)
|
|
|
795 (buffer-substring (match-beginning 0) (match-end 0))))))
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|
|
796
|
|
|
797
|
|
|
798 (defun shell-dynamic-complete-environment-variable ()
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|
|
799 "Dynamically complete the environment variable at point.
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|
800 Completes if after a variable, i.e., if it starts with a \"$\".
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|
|
801 See `shell-dynamic-complete-as-environment-variable'.
|
|
|
802
|
|
|
803 This function is similar to `comint-dynamic-complete-filename', except that it
|
|
|
804 searches `process-environment' for completion candidates. Note that this may
|
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|
805 not be the same as the interpreter's idea of variable names. The main problem
|
|
|
806 with this type of completion is that `process-environment' is the environment
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|
807 which Emacs started with. Emacs does not track changes to the environment made
|
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|
808 by the interpreter. Perhaps it would be more accurate if this function was
|
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|
809 called `shell-dynamic-complete-process-environment-variable'.
|
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|
810
|
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|
811 Returns non-nil if successful."
|
|
|
812 (interactive)
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|
|
813 (let ((variable (shell-match-partial-variable)))
|
|
|
814 (if (and variable (string-match "^\\$" variable))
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|
|
815 (prog2 (message "Completing variable name...")
|
|
|
816 (shell-dynamic-complete-as-environment-variable)))))
|
|
|
817
|
|
|
818
|
|
|
819 (defun shell-dynamic-complete-as-environment-variable ()
|
|
|
820 "Dynamically complete at point as an environment variable.
|
|
|
821 Used by `shell-dynamic-complete-environment-variable'.
|
|
|
822 Uses `comint-dynamic-simple-complete'."
|
|
|
823 (let* ((var (or (shell-match-partial-variable) ""))
|
|
|
824 (variable (substring var (or (string-match "[^$({]\\|$" var) 0)))
|
|
|
825 (variables (mapcar (function (lambda (x)
|
|
|
826 (substring x 0 (string-match "=" x))))
|
|
|
827 process-environment))
|
|
|
828 (addsuffix comint-completion-addsuffix)
|
|
|
829 (comint-completion-addsuffix nil)
|
|
|
830 (success (comint-dynamic-simple-complete variable variables)))
|
|
|
831 (if (memq success '(sole shortest))
|
|
|
832 (let* ((var (shell-match-partial-variable))
|
|
|
833 (variable (substring var (string-match "[^$({]" var)))
|
|
|
834 (protection (cond ((string-match "{" var) "}")
|
|
|
835 ((string-match "(" var) ")")
|
|
|
836 (t "")))
|
|
|
837 (suffix (cond ((null addsuffix) "")
|
|
|
838 ((file-directory-p
|
|
|
839 (comint-directory (getenv variable))) "/")
|
|
|
840 (t " "))))
|
|
|
841 (insert protection suffix)))
|
|
|
842 success))
|
|
|
843
|
|
|
844
|
|
|
845 (defun shell-replace-by-expanded-directory ()
|
|
|
846 "Expand directory stack reference before point.
|
|
|
847 Directory stack references are of the form \"=digit\" or \"=-\".
|
|
|
848 See `default-directory' and `shell-dirstack'.
|
|
|
849
|
|
|
850 Returns t if successful."
|
|
|
851 (interactive)
|
|
|
852 (if (comint-match-partial-filename)
|
|
|
853 (save-excursion
|
|
|
854 (goto-char (match-beginning 0))
|
|
|
855 (let ((stack (cons default-directory shell-dirstack))
|
|
|
856 (index (cond ((looking-at "=-/?")
|
|
|
857 (length shell-dirstack))
|
|
|
858 ((looking-at "=\\([0-9]+\\)")
|
|
|
859 (string-to-number
|
|
|
860 (buffer-substring
|
|
|
861 (match-beginning 1) (match-end 1)))))))
|
|
|
862 (cond ((null index)
|
|
|
863 nil)
|
|
|
864 ((>= index (length stack))
|
|
|
865 (error "Directory stack not that deep."))
|
|
|
866 (t
|
|
|
867 (replace-match (file-name-as-directory (nth index stack)) t t)
|
|
|
868 (message "Directory item: %d" index)
|
|
|
869 t))))))
|
|
|
870
|
|
|
871 (provide 'shell)
|
|
|
872
|
|
|
873 ;;; shell.el ends here
|
