;;; shell.el --- specialized comint.el for running the shell.
-;; Copyright (C) 1988, 1993, 1994, 1995 Free Software Foundation, Inc.
+;; Copyright (C) 1988, 93, 94, 95, 96, 1997 Free Software Foundation, Inc.
-;; Author: Olin Shivers <shivers@cs.cmu.edu>
-;; Maintainer: Simon Marshall <simon@gnu.ai.mit.edu>
+;; Author: Olin Shivers <shivers@cs.cmu.edu> then
+;; Simon Marshall <simon@gnu.ai.mit.edu>
+;; Maintainer: FSF
;; Keywords: processes
;; This file is part of GNU Emacs.
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to
-;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+;; along with GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
;;; Commentary:
-;;; Please send me bug reports, bug fixes, and extensions, so that I can
-;;; merge them into the master source.
-;;; - Olin Shivers (shivers@cs.cmu.edu)
-;;; - Simon Marshall (simon@gnu.ai.mit.edu)
+;; Please send me bug reports, bug fixes, and extensions, so that I can
+;; merge them into the master source.
+;; - Olin Shivers (shivers@cs.cmu.edu)
+;; - Simon Marshall (simon@gnu.ai.mit.edu)
-;;; This file defines a a shell-in-a-buffer package (shell mode) built
-;;; on top of comint mode. This is actually cmushell with things
-;;; renamed to replace its counterpart in Emacs 18. cmushell is more
-;;; featureful, robust, and uniform than the Emacs 18 version.
+;; This file defines a a shell-in-a-buffer package (shell mode) built
+;; on top of comint mode. This is actually cmushell with things
+;; renamed to replace its counterpart in Emacs 18. cmushell is more
+;; featureful, robust, and uniform than the Emacs 18 version.
-;;; Since this mode is built on top of the general command-interpreter-in-
-;;; a-buffer mode (comint mode), it shares a common base functionality,
-;;; and a common set of bindings, with all modes derived from comint mode.
-;;; This makes these modes easier to use.
+;; Since this mode is built on top of the general command-interpreter-in-
+;; a-buffer mode (comint mode), it shares a common base functionality,
+;; and a common set of bindings, with all modes derived from comint mode.
+;; This makes these modes easier to use.
-;;; For documentation on the functionality provided by comint mode, and
-;;; the hooks available for customising it, see the file comint.el.
-;;; For further information on shell mode, see the comments below.
+;; For documentation on the functionality provided by comint mode, and
+;; the hooks available for customising it, see the file comint.el.
+;; For further information on shell mode, see the comments below.
-;;; Needs fixin:
-;;; When sending text from a source file to a subprocess, the process-mark can
-;;; move off the window, so you can lose sight of the process interactions.
-;;; Maybe I should ensure the process mark is in the window when I send
-;;; text to the process? Switch selectable?
+;; Needs fixin:
+;; When sending text from a source file to a subprocess, the process-mark can
+;; move off the window, so you can lose sight of the process interactions.
+;; Maybe I should ensure the process mark is in the window when I send
+;; text to the process? Switch selectable?
;; YOUR .EMACS FILE
;;=============================================================================
;; (eval-after-load "shell"
;; '(define-key shell-mode-map "\M-#" 'shells-dynamic-spell))
\f
-;;; Brief Command Documentation:
-;;;============================================================================
-;;; Comint Mode Commands: (common to shell and all comint-derived modes)
-;;;
-;;; m-p comint-previous-input Cycle backwards in input history
-;;; m-n comint-next-input Cycle forwards
-;;; m-r comint-previous-matching-input Previous input matching a regexp
-;;; m-s comint-next-matching-input Next input that matches
-;;; m-c-l comint-show-output Show last batch of process output
-;;; return comint-send-input
-;;; c-d comint-delchar-or-maybe-eof Delete char unless at end of buff.
-;;; c-c c-a comint-bol Beginning of line; skip prompt
-;;; c-c c-u comint-kill-input ^u
-;;; c-c c-w backward-kill-word ^w
-;;; c-c c-c comint-interrupt-subjob ^c
-;;; c-c c-z comint-stop-subjob ^z
-;;; c-c c-\ comint-quit-subjob ^\
-;;; c-c c-o comint-kill-output Delete last batch of process output
-;;; c-c c-r comint-show-output Show last batch of process output
-;;; c-c c-h comint-dynamic-list-input-ring List input history
-;;; send-invisible Read line w/o echo & send to proc
-;;; comint-continue-subjob Useful if you accidentally suspend
-;;; top-level job
-;;; comint-mode-hook is the comint mode hook.
-
-;;; Shell Mode Commands:
-;;; shell Fires up the shell process
-;;; tab comint-dynamic-complete Complete filename/command/history
-;;; m-? comint-dynamic-list-filename-completions
-;;; List completions in help buffer
-;;; m-c-f shell-forward-command Forward a shell command
-;;; m-c-b shell-backward-command Backward a shell command
-;;; dirs Resync the buffer's dir stack
-;;; dirtrack-toggle Turn dir tracking on/off
-;;; comint-strip-ctrl-m Remove trailing ^Ms from output
-;;;
-;;; The shell mode hook is shell-mode-hook
-;;; comint-prompt-regexp is initialised to shell-prompt-pattern, for backwards
-;;; compatibility.
+;; Brief Command Documentation:
+;;============================================================================
+;; Comint Mode Commands: (common to shell and all comint-derived modes)
+;;
+;; m-p comint-previous-input Cycle backwards in input history
+;; m-n comint-next-input Cycle forwards
+;; m-r comint-previous-matching-input Previous input matching a regexp
+;; m-s comint-next-matching-input Next input that matches
+;; m-c-l comint-show-output Show last batch of process output
+;; return comint-send-input
+;; c-d comint-delchar-or-maybe-eof Delete char unless at end of buff.
+;; c-c c-a comint-bol Beginning of line; skip prompt
+;; c-c c-u comint-kill-input ^u
+;; c-c c-w backward-kill-word ^w
+;; c-c c-c comint-interrupt-subjob ^c
+;; c-c c-z comint-stop-subjob ^z
+;; c-c c-\ comint-quit-subjob ^\
+;; c-c c-o comint-kill-output Delete last batch of process output
+;; c-c c-r comint-show-output Show last batch of process output
+;; c-c c-h comint-dynamic-list-input-ring List input history
+;; send-invisible Read line w/o echo & send to proc
+;; comint-continue-subjob Useful if you accidentally suspend
+;; top-level job
+;; comint-mode-hook is the comint mode hook.
+
+;; Shell Mode Commands:
+;; shell Fires up the shell process
+;; tab comint-dynamic-complete Complete filename/command/history
+;; m-? comint-dynamic-list-filename-completions
+;; List completions in help buffer
+;; m-c-f shell-forward-command Forward a shell command
+;; m-c-b shell-backward-command Backward a shell command
+;; dirs Resync the buffer's dir stack
+;; dirtrack-mode Turn dir tracking on/off
+;; comint-strip-ctrl-m Remove trailing ^Ms from output
+;;
+;; The shell mode hook is shell-mode-hook
+;; comint-prompt-regexp is initialised to shell-prompt-pattern, for backwards
+;; compatibility.
-;;; Read the rest of this file for more information.
+;; Read the rest of this file for more information.
\f
-;;; Customization and Buffer Variables
-;;; ===========================================================================
-;;;
-
;;; Code:
(require 'comint)
+;;; Customization and Buffer Variables
+
+(defgroup shell nil
+ "Running shell from within Emacs buffers"
+ :group 'processes
+ :group 'unix)
+
+(defgroup shell-directories nil
+ "Directory support in shell mode"
+ :group 'shell)
+
+(defgroup shell-faces nil
+ "Faces in shell buffers"
+ :group 'shell)
+
;;;###autoload
(defvar shell-prompt-pattern "^[^#$%>\n]*[#$%>] *"
"Regexp to match prompts in the inferior shell.
shell buffer.
The pattern should probably not match more than one line. If it does,
-shell-mode may become confused trying to distinguish prompt from input
+Shell mode may become confused trying to distinguish prompt from input
on lines which don't start with a prompt.
This is a fine thing to set in your `.emacs' file.")
-(defvar shell-completion-fignore nil
+(defcustom shell-completion-fignore nil
"*List of suffixes to be disregarded during file/command completion.
This variable is used to initialize `comint-completion-fignore' in the shell
buffer. The default is nil, for compatibility with most shells.
Some people like (\"~\" \"#\" \"%\").
-This is a fine thing to set in your `.emacs' file.")
+This is a fine thing to set in your `.emacs' file."
+ :type '(repeat (string :tag "Suffix"))
+ :group 'shell)
(defvar shell-delimiter-argument-list '(?\| ?& ?< ?> ?\( ?\) ?\;)
"List of characters to recognise as separate arguments.
This variable is used to initialize `comint-delimiter-argument-list' in the
-shell buffer. The default is (?\\| ?& ?< ?> ?\\( ?\\) ?\\;).
+shell buffer. The value may depend on the operating system or shell.
+
+This is a fine thing to set in your `.emacs' file.")
+
+(defvar shell-file-name-chars
+ (if (memq system-type '(ms-dos windows-nt))
+ "~/A-Za-z0-9_^$!#%&{}@`'.,:()-"
+ "~/A-Za-z0-9+@:_.$#%,={}-")
+ "String of characters valid in a file name.
+This variable is used to initialize `comint-file-name-chars' in the
+shell buffer. The value may depend on the operating system or shell.
This is a fine thing to set in your `.emacs' file.")
(defvar shell-file-name-quote-list
- (append shell-delimiter-argument-list '(?\ ?\* ?\! ?\" ?\' ?\`))
+ (if (memq system-type '(ms-dos windows-nt))
+ nil
+ (append shell-delimiter-argument-list '(?\ ?\* ?\! ?\" ?\' ?\`)))
"List of characters to quote when in a file name.
This variable is used to initialize `comint-file-name-quote-list' in the
-shell buffer. The default is (?\ ?\* ?\! ?\" ?\' ?\`) plus characters
-in `shell-delimiter-argument-list'.
+shell buffer. The value may depend on the operating system or shell.
This is a fine thing to set in your `.emacs' file.")
This is a fine thing to set in your `.emacs' file.")
-(defvar shell-command-regexp "[^;&|\n]+"
+(defcustom shell-command-regexp "[^;&|\n]+"
"*Regexp to match a single command within a pipeline.
-This is used for directory tracking and does not do a perfect job.")
+This is used for directory tracking and does not do a perfect job."
+ :type 'regexp
+ :group 'shell)
-(defvar shell-completion-execonly t
+(defcustom shell-completion-execonly t
"*If non-nil, use executable files only for completion candidates.
This mirrors the optional behavior of tcsh.
-Detecting executability of files may slow command completion considerably.")
+Detecting executability of files may slow command completion considerably."
+ :type 'boolean
+ :group 'shell)
-(defvar shell-popd-regexp "popd"
- "*Regexp to match subshell commands equivalent to popd.")
+(defcustom shell-popd-regexp "popd"
+ "*Regexp to match subshell commands equivalent to popd."
+ :type 'regexp
+ :group 'shell-directories)
-(defvar shell-pushd-regexp "pushd"
- "*Regexp to match subshell commands equivalent to pushd.")
+(defcustom shell-pushd-regexp "pushd"
+ "*Regexp to match subshell commands equivalent to pushd."
+ :type 'regexp
+ :group 'shell-directories)
-(defvar shell-pushd-tohome nil
+(defcustom shell-pushd-tohome nil
"*If non-nil, make pushd with no arg behave as \"pushd ~\" (like cd).
-This mirrors the optional behavior of tcsh.")
+This mirrors the optional behavior of tcsh."
+ :type 'boolean
+ :group 'shell-directories)
-(defvar shell-pushd-dextract nil
+(defcustom shell-pushd-dextract nil
"*If non-nil, make \"pushd +n\" pop the nth dir to the stack top.
-This mirrors the optional behavior of tcsh.")
+This mirrors the optional behavior of tcsh."
+ :type 'boolean
+ :group 'shell-directories)
-(defvar shell-pushd-dunique nil
+(defcustom shell-pushd-dunique nil
"*If non-nil, make pushd only add unique directories to the stack.
-This mirrors the optional behavior of tcsh.")
-
-(defvar shell-cd-regexp "cd"
- "*Regexp to match subshell commands equivalent to cd.")
-
-(defvar explicit-shell-file-name nil
- "*If non-nil, is file name to use for explicitly requested inferior shell.")
-
-(defvar explicit-csh-args
+This mirrors the optional behavior of tcsh."
+ :type 'boolean
+ :group 'shell-directories)
+
+(defcustom shell-cd-regexp "cd"
+ "*Regexp to match subshell commands equivalent to cd."
+ :type 'regexp
+ :group 'shell-directories)
+
+(defcustom shell-chdrive-regexp
+ (if (memq system-type '(ms-dos windows-nt))
+ ; NetWare allows the five chars between upper and lower alphabetics.
+ "[]a-zA-Z^_`\\[\\\\]:"
+ nil)
+ "*If non-nil, is regexp used to track drive changes."
+ :type '(choice regexp
+ (const nil))
+ :group 'shell-directories)
+
+(defcustom explicit-shell-file-name nil
+ "*If non-nil, is file name to use for explicitly requested inferior shell."
+ :type '(choice (const :tag "None" nil) file)
+ :group 'shell)
+
+(defcustom explicit-csh-args
(if (eq system-type 'hpux)
;; -T persuades HP's csh not to think it is smarter
;; than us about what terminal modes to use.
'("-i" "-T")
'("-i"))
"*Args passed to inferior shell by M-x shell, if the shell is csh.
-Value is a list of strings, which may be nil.")
+Value is a list of strings, which may be nil."
+ :type '(repeat (string :tag "Argument"))
+ :group 'shell)
-(defvar shell-input-autoexpand 'history
+(defcustom shell-input-autoexpand 'history
"*If non-nil, expand input command history references on completion.
This mirrors the optional behavior of tcsh (its autoexpand and histlit).
`comint-dynamic-complete'.
This variable supplies a default for `comint-input-autoexpand',
-for Shell mode only.")
+for Shell mode only."
+ :type '(choice (const nil) (const input) (const history))
+ :type 'shell)
(defvar shell-dirstack nil
"List of directories saved by pushd in this buffer's shell.
shell-replace-by-expanded-directory)
'complete-expand)))
-(defvar shell-mode-hook '()
- "*Hook for customising Shell mode.")
+(defcustom shell-mode-hook '()
+ "*Hook for customising Shell mode."
+ :type 'hook
+ :group 'shell)
(defvar shell-font-lock-keywords
- (list (cons shell-prompt-pattern 'font-lock-keyword-face)
- '("[ \t]\\([+-][^ \t\n]+\\)" 1 font-lock-comment-face)
- '("^[^ \t\n]+:.*$" . font-lock-string-face)
- '("^\\[[1-9][0-9]*\\]" . font-lock-string-face))
+ '((eval . (cons shell-prompt-pattern 'font-lock-warning-face))
+ ("[ \t]\\([+-][^ \t\n]+\\)" 1 font-lock-comment-face)
+ ("^[^ \t\n]+:.*" . font-lock-string-face)
+ ("^\\[[1-9][0-9]*\\]" . font-lock-string-face))
"Additional expressions to highlight in Shell mode.")
\f
;;; Basic Procedures
-;;; ===========================================================================
-;;;
+
+(put 'shell-mode 'mode-class 'special)
(defun shell-mode ()
"Major mode for interacting with an inferior shell.
by \\[list-buffers] or \\[mouse-buffer-menu] in the `File' field.
\\[dirs] queries the shell and resyncs Emacs' idea of what the current
directory stack is.
-\\[dirtrack-toggle] turns directory tracking on and off.
+\\[dirtrack-mode] turns directory tracking on and off.
\\{shell-mode-map}
Customization: Entry to this mode runs the hooks on `comint-mode-hook' and
`comint-input-filter-functions' are run. After each shell output, the hooks
on `comint-output-filter-functions' are run.
-Variables `shell-cd-regexp', `shell-pushd-regexp' and `shell-popd-regexp'
-are used to match their respective commands, while `shell-pushd-tohome',
-`shell-pushd-dextract' and `shell-pushd-dunique' control the behavior of the
-relevant command.
+Variables `shell-cd-regexp', `shell-chdrive-regexp', `shell-pushd-regexp'
+and `shell-popd-regexp' are used to match their respective commands,
+while `shell-pushd-tohome', `shell-pushd-dextract' and `shell-pushd-dunique'
+control the behavior of the relevant command.
Variables `comint-completion-autolist', `comint-completion-addsuffix',
`comint-completion-recexact' and `comint-completion-fignore' control the
(setq comint-prompt-regexp shell-prompt-pattern)
(setq comint-completion-fignore shell-completion-fignore)
(setq comint-delimiter-argument-list shell-delimiter-argument-list)
+ (setq comint-file-name-chars shell-file-name-chars)
(setq comint-file-name-quote-list shell-file-name-quote-list)
(setq comint-dynamic-complete-functions shell-dynamic-complete-functions)
(make-local-variable 'paragraph-start)
(setq font-lock-defaults '(shell-font-lock-keywords t))
(make-local-variable 'shell-dirstack)
(setq shell-dirstack nil)
+ (make-local-variable 'shell-last-dir)
(setq shell-last-dir nil)
(make-local-variable 'shell-dirtrackp)
(setq shell-dirtrackp t)
- (add-hook 'comint-input-filter-functions 'shell-directory-tracker)
+ (add-hook 'comint-input-filter-functions 'shell-directory-tracker nil t)
(setq comint-input-autoexpand shell-input-autoexpand)
+ ;; This is not really correct, since the shell buffer does not really
+ ;; edit this directory. But it is useful in the buffer list and menus.
(make-local-variable 'list-buffers-directory)
(setq list-buffers-directory (expand-file-name default-directory))
;; shell-dependent assignments.
(cond ((string-equal shell "bash") "~/.bash_history")
((string-equal shell "ksh") "~/.sh_history")
(t "~/.history"))))
- (if (equal (file-truename comint-input-ring-file-name) "/dev/null")
+ (if (or (equal comint-input-ring-file-name "")
+ (equal (file-truename comint-input-ring-file-name)
+ (file-truename "/dev/null")))
(setq comint-input-ring-file-name nil))
(setq shell-dirstack-query
- (if (string-match "^k?sh$" shell) "pwd" "dirs")))
+ (cond ((string-equal shell "sh") "pwd")
+ ((string-equal shell "ksh") "echo $PWD ~-")
+ (t "dirs"))))
(run-hooks 'shell-mode-hook)
(comint-read-input-ring t))
\f
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.
;;;###autoload (add-hook 'same-window-buffer-names "*shell*")
\f
;;; 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
It watches for cd, pushd and popd commands and sets the buffer's
default directory to track these commands.
-You may toggle this tracking on and off with M-x dirtrack-toggle.
+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-pushd-regexp', and `shell-popd-regexp',
-while `shell-pushd-tohome', `shell-pushd-dextract' and `shell-pushd-dunique'
-control the behavior of the relevant command.
+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 "^[;\\s ]*" str) ; skip whitespace
+ (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))
- (cond ((eq (string-match shell-popd-regexp cmd) 0)
- (shell-process-popd (substitute-in-file-name arg1)))
- ((eq (string-match shell-pushd-regexp cmd) 0)
- (shell-process-pushd (substitute-in-file-name arg1)))
- ((eq (string-match shell-cd-regexp cmd) 0)
- (shell-process-cd (substitute-in-file-name arg1))))
- (setq start (progn (string-match "[;\\s ]*" str end) ; skip again
+ (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"))))
(shell-dirstack
(let ((old default-directory))
(shell-cd (car shell-dirstack))
- (setq shell-dirstack
- (cons old (cdr shell-dirstack)))
+ (setq shell-dirstack (cons old (cdr shell-dirstack)))
(shell-dirstack-message)))
(t
(message "Directory stack empty."))))
(string-to-int str)))
-(defun shell-dirtrack-toggle ()
+(defun shell-dirtrack-mode ()
"Turn directory tracking on and off in a shell buffer."
(interactive)
(if (setq shell-dirtrackp (not shell-dirtrackp))
(message "Directory tracking %s" (if shell-dirtrackp "ON" "OFF")))
;;; For your typing convenience:
-(defalias 'dirtrack-toggle 'shell-dirtrack-toggle)
+(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'."
(let ((ds (nreverse ds)))
(condition-case nil
(progn (shell-cd (car ds))
- (setq shell-dirstack (cdr ds))
+ (setq shell-dirstack (cdr ds)
+ shell-last-dir (car shell-dirstack))
(shell-dirstack-message))
(error (message "Couldn't cd.")))))))
(setcar ds dir))
(setq msg (concat msg (directory-file-name dir) " "))
(setq ds (cdr ds))))
- (message msg)))
+ (message "%s" msg)))
+\f
+;; 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)))
\f
(defun shell-forward-command (&optional arg)
"Move forward across ARG shell command(s). Does not cross lines.
(defun shell-match-partial-variable ()
- "Return the variable at point, or nil if non is found."
+ "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)