lisp/erc/erc-viper.el

   1 ;;; erc-viper.el --- Viper compatibility hacks for ERC
   2
   3 ;; Copyright (C) 2005 Free Software Foundation, Inc.
   4
   5 ;; Author: Edward O'Connor <ted@oconnor.cx>
   6 ;; Keywords: emulation
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  23 ;; Boston, MA 02110-1301, USA.
  24
  25 ;;; Commentary:
  26
  27 ;; Viper is a VI emulation mode for Emacs. ERC and Viper don't quite get
  28 ;; along by default; the code in this file fixes that. A simple
  29 ;;   (require 'erc-viper)
  30 ;; in your ~/.ercrc.el should be all it takes for you to use ERC and
  31 ;; Viper together happily.
  32
  33 ;;; Code:
  34
  35 (require 'viper)
  36
  37 ;; We need this for `erc-mode-hook' and `erc-buffer-list'. Perhaps it
  38 ;; would be better to use an `eval-after-load', so that there could be
  39 ;; some autodetection / loading of this file from within erc.el?
  40 (require 'erc)
  41
  42 ;; Fix RET in ERC buffers, by telling Viper to pass RET through to the
  43 ;; normal keymap.
  44
  45 (add-to-list 'viper-major-mode-modifier-list
  46              '(erc-mode insert-state viper-comint-mode-modifier-map))
  47 (add-to-list 'viper-major-mode-modifier-list
  48              '(erc-mode vi-state viper-comint-mode-modifier-map))
  49
  50 (viper-apply-major-mode-modifiers)
  51
  52 ;; Ensure that ERC buffers come up in insert state.
  53 (add-to-list 'viper-insert-state-mode-list 'erc-mode)
  54
  55 ;; Fix various local variables in Viper.
  56 (add-hook 'erc-mode-hook 'viper-comint-mode-hook)
  57
  58 ;; Fix ERC buffers that already exist (buffers in which `erc-mode-hook'
  59 ;; has already been run).
  60 (mapc (lambda (buf)
  61         (with-current-buffer buf
  62           (viper-comint-mode-hook)
  63           ;; If there *is* a final newline in this buffer, delete it, as
  64           ;; it interferes with ERC /-commands.
  65           (let ((last (1- (point-max))))
  66             (when (eq (char-after last) ?\n)
  67               (goto-char last)
  68               (delete-char 1)))))
  69       (erc-buffer-list))
  70
  71 (provide 'erc-viper)
  72
  73 ;; arch-tag: 659fa645-e9ad-428c-ad53-8304d9f900f6
  74 ;;; erc-viper.el ends here