;;; shell.el --- specialized comint.el for running the shell -*- lexical-binding: t -*-
-;; Copyright (C) 1988, 1993-1997, 2000-2012 Free Software Foundation, Inc.
+;; Copyright (C) 1988, 1993-1997, 2000-2014 Free Software Foundation,
+;; Inc.
;; Author: Olin Shivers <shivers@cs.cmu.edu>
;; Simon Marshall <simon@gnu.org>
-;; Maintainer: FSF <emacs-devel@gnu.org>
+;; Maintainer: emacs-devel@gnu.org
;; Keywords: processes
;; This file is part of GNU Emacs.
"Directory support in shell mode."
:group 'shell)
-(defgroup shell-faces nil
- "Faces in shell buffers."
- :group 'shell)
+;; Unused.
+;;; (defgroup shell-faces nil
+;;; "Faces in shell buffers."
+;;; :group 'shell)
;;;###autoload
(defcustom shell-dumb-shell-regexp (purecopy "cmd\\(proxy\\)?\\.exe")
;; Note: There are no explicit references to the variable `explicit-bash-args'.
;; It is used implicitly by M-x shell when the interactive shell is `bash'.
(defcustom explicit-bash-args
- (let* ((prog (or (and (boundp 'explicit-shell-file-name) explicit-shell-file-name)
- (getenv "ESHELL") shell-file-name))
- (name (file-name-nondirectory prog)))
- ;; Tell bash not to use readline, except for bash 1.x which
- ;; doesn't grok --noediting. Bash 1.x has -nolineediting, but
- ;; process-send-eof cannot terminate bash if we use it.
- (if (and (not purify-flag)
- (equal name "bash")
- (file-executable-p prog)
- (string-match "bad option"
- (shell-command-to-string
- (concat (shell-quote-argument prog)
- " --noediting"))))
- '("-i")
- '("--noediting" "-i")))
+ ;; Tell bash not to use readline. It's safe to assume --noediting now,
+ ;; as it was introduced in 1996 in Bash version 2.
+ '("--noediting" "-i")
"Args passed to inferior shell by \\[shell], if the shell is bash.
Value is a list of strings, which may be nil."
:type '(repeat (string :tag "Argument"))
;; very inefficient in Shell buffers (e.g. Bug#10835). We use a
;; custom `ansi-color-apply-face-function' to convert color escape
;; sequences into `font-lock-face' properties.
- (set (make-local-variable 'ansi-color-apply-face-function)
- (lambda (beg end face)
- (when face
- (put-text-property beg end 'font-lock-face face))))
+ (setq-local ansi-color-apply-face-function #'shell-apply-ansi-color)
+ (shell-reapply-ansi-color)
;; 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.
'shell-filter-ctrl-a-ctrl-b nil t)))
(comint-read-input-ring t)))
+(defun shell-apply-ansi-color (beg end face)
+ "Apply FACE as the ansi-color face for the text between BEG and END."
+ (when face
+ (put-text-property beg end 'ansi-color-face face)
+ (put-text-property beg end 'font-lock-face face)))
+
+(defun shell-reapply-ansi-color ()
+ "Reapply ansi-color faces to the existing contents of the buffer."
+ (save-restriction
+ (widen)
+ (let* ((pos (point-min))
+ (end (or (next-single-property-change pos 'ansi-color-face)
+ (point-max)))
+ face)
+ (while end
+ (if (setq face (get-text-property pos 'ansi-color-face))
+ (put-text-property pos (or end (point-max))
+ 'font-lock-face face))
+ (setq pos end
+ end (next-single-property-change pos 'ansi-color-face))))))
+
(defun shell-filter-ctrl-a-ctrl-b (string)
"Remove `^A' and `^B' characters from comint output.
(and current-prefix-arg
(prog1
(read-buffer "Shell buffer: "
- (generate-new-buffer-name "*shell*"))
+ ;; If the current buffer is an inactive
+ ;; shell buffer, use it as the default.
+ (if (and (eq major-mode 'shell-mode)
+ (null (get-buffer-process (current-buffer))))
+ (buffer-name)
+ (generate-new-buffer-name "*shell*")))
(if (file-remote-p default-directory)
;; It must be possible to declare a local default-directory.
;; FIXME: This can't be right: it changes the default-directory
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 nil
- (let ((start (progn (string-match
+;;; (with-demoted-errors "Directory tracker failure: %s"
+ ;; This fails so often that it seems better to just ignore errors (?).
+ ;; Eg even: foo=/tmp; cd $foo is beyond us (bug#17159).
+ (ignore-errors
+ (let ((start (progn (string-match
(concat "^" shell-command-separator-regexp)
str) ; skip whitespace
(match-end 0)))
(setq start (progn (string-match shell-command-separator-regexp
str end)
;; skip again
- (match-end 0)))))
- (error "Couldn't cd"))))
+ (match-end 0))))))))
(defun shell-unquote-argument (string)
"Remove all kinds of shell quoting from STRING."
(cond ((> num (length shell-dirstack))
(message "Directory stack not that deep."))
((= num 0)
- (error (message "Couldn't cd")))
+ (error "Couldn't cd"))
(shell-pushd-dextract
(let ((dir (nth (1- num) shell-dirstack)))
(shell-process-popd arg)
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"))))))
+ (with-demoted-errors "Couldn't cd: %s"
+ (shell-cd (car ds))
+ (setq shell-dirstack (cdr ds)
+ shell-last-dir (car shell-dirstack))
+ (shell-dirstack-message)))))
(if started-at-pmark (goto-char (marker-position pmark)))))
;; For your typing convenience:
(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
+searches `exec-path' (minus trailing `exec-directory') 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.
+Completion is dependent on the value of `shell-completion-execonly',
+`shell-completion-fignore', plus those that affect file completion. See Info
+node `Shell Options'.
Returns t if successful."
(interactive)
(let ((data (shell-command-completion)))
(if data
- (prog2 (unless (window-minibuffer-p (selected-window))
+ (prog2 (unless (window-minibuffer-p)
(message "Completing command name..."))
(apply #'completion-in-region data)))))
(start (if (zerop (length filename)) (point) (match-beginning 0)))
(end (if (zerop (length filename)) (point) (match-end 0)))
(filenondir (file-name-nondirectory filename))
- (path-dirs (cdr (reverse exec-path))) ;FIXME: Why `cdr'?
+ ; why cdr? see `shell-dynamic-complete-command'
+ (path-dirs (append (cdr (reverse exec-path))
+ (if (memq system-type '(windows-nt ms-dos)) '("."))))
(cwd (file-name-as-directory (expand-file-name default-directory)))
(ignored-extensions
(and comint-completion-fignore
(interactive)
(let ((data (shell-environment-variable-completion)))
(if data
- (prog2 (unless (window-minibuffer-p (selected-window))
+ (prog2 (unless (window-minibuffer-p)
(message "Completing variable name..."))
(apply #'completion-in-region data)))))
HCoop / bpt / emacs.git / blobdiff