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emacs/lisp/pcmpl-linux.el

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;;; pcmpl-linux.el --- functions for dealing with GNU/Linux completions
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;; Copyright (C) 1999-2019 Free Software Foundation, Inc.
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;; Package: pcomplete
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;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
;; These functions are for use with GNU/Linux. Since they depend on a
;; certain knowledge of the layout of such systems, they probably
;; won't work very well on other operating systems.
;;; Code:
(provide 'pcmpl-linux)
(require 'pcomplete)
Misc custom group fixes * cus-start.el (show-trailing-whitespace): Move to editing basics. * faces.el (trailing-whitespace): Don't use whitespace-faces group. * obsolete/old-whitespace.el (whitespace-faces): Remove group. (whitespace-highlight): Move to whitespace group. * comint.el (comint-source): * pcmpl-linux.el (pcmpl-linux): * shell.el (shell-faces): * eshell/esh-opt.el (eshell-opt): * international/ccl.el (ccl): Remove empty custom groups. * completion.el (dynamic-completion-mode): * jit-lock.el (jit-lock-debug-mode): * minibuffer.el (completion-in-region-mode): * type-break.el (type-break-mode-line-message-mode) (type-break-query-mode): * emulation/tpu-edt.el (tpu-edt-mode): * progmodes/subword.el (global-subword-mode, global-superword-mode): * progmodes/vhdl-mode.el (vhdl-electric-mode, vhdl-stutter-mode): * term/vt100.el (vt100-wide-mode): Specify explicit :group. * term/xterm.el (xterm): Change parent group to terminals. * master.el (master): Remove empty custom group. (master-mode): Remove unused :group argument. * textmodes/refill.el (refill): Remove empty custom group. (refill-mode): Remove unused :group argument. * textmodes/rst.el (rst-compile-toolsets): Use rst-compile group. * cedet/semantic/symref/list.el (semantic-symref-auto-expand-results) (semantic-symref-results-mode-hook) (semantic-symref-results-summary-function): Fix :group. * erc/erc-list.el (erc-list): * erc/erc-menu.el (erc-menu): * erc/erc-ring.el (erc-ring): Define custom groups, for define-erc-module. * gnus/shr-color.el (shr-color-visible-luminance-min) (shr-color-visible-distance-min): Use shr-color group. * url/url-news.el (url-news): Remove empty custom group.
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;; Unused.
;;; (defgroup pcmpl-linux nil
;;; "Functions for dealing with GNU/Linux completions."
;;; :group 'pcomplete)
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;; Functions:
;;;###autoload
(defun pcomplete/kill ()
"Completion for GNU/Linux `kill', using /proc filesystem."
(if (pcomplete-match "^-\\(.*\\)" 0)
(pcomplete-here
(pcomplete-uniquify-list
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(split-string
(pcomplete-process-result "kill" "-l")))
(pcomplete-match-string 1 0)))
(while (pcomplete-here
(if (file-directory-p "/proc")
(directory-files "/proc" nil "\\`[0-9]+\\'"))
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nil 'identity)))
;;;###autoload
(defun pcomplete/umount ()
"Completion for GNU/Linux `umount'."
(pcomplete-opt "hVafrnvt(pcmpl-linux-fs-types)")
(while (pcomplete-here (pcmpl-linux-mounted-directories)
nil 'identity)))
;;;###autoload
(defun pcomplete/mount ()
"Completion for GNU/Linux `mount'."
(pcomplete-opt "hVanfFrsvwt(pcmpl-linux-fs-types)o?L?U?")
(while (pcomplete-here (pcomplete-entries) nil 'identity)))
(defun pcmpl-linux-fs-types ()
"Return a list of available fs modules on GNU/Linux systems."
(let ((kernel-ver (pcomplete-process-result "uname" "-r")))
(directory-files
(concat "/lib/modules/" kernel-ver "/kernel/fs/"))))
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(defun pcmpl-linux-mounted-directories ()
"Return a list of mounted directory names."
(let (points)
(when (file-readable-p "/etc/mtab")
(with-temp-buffer
(insert-file-contents-literally "/etc/mtab")
(while (not (eobp))
(let* ((line (buffer-substring (point) (line-end-position)))
(args (split-string line " ")))
(setq points (cons (nth 1 args) points)))
(forward-line)))
(pcomplete-uniquify-list points))))
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(defun pcomplete-pare-list (l r)
"Destructively remove from list L all elements matching any in list R.
Test is done using `equal'."
(while (and l (and r (member (car l) r)))
(setq l (cdr l)))
(let ((m l))
(while m
(while (and (cdr m)
(and r (member (cadr m) r)))
(setcdr m (cddr m)))
(setq m (cdr m))))
l)
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(defun pcmpl-linux-mountable-directories ()
"Return a list of mountable directory names."
(let (points)
(when (file-readable-p "/etc/fstab")
(with-temp-buffer
(insert-file-contents-literally "/etc/fstab")
(while (not (eobp))
(let* ((line (buffer-substring (point) (line-end-position)))
(args (split-string line "\\s-+")))
(setq points (cons (nth 1 args) points)))
(forward-line)))
(pcomplete-pare-list
(pcomplete-uniquify-list points)
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(cons "swap" (pcmpl-linux-mounted-directories))))))
;;; pcmpl-linux.el ends here