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569 lines
21 KiB
EmacsLisp
569 lines
21 KiB
EmacsLisp
;; erc-goodies.el --- Collection of ERC modules
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;; Copyright (C) 2001-2013 Free Software Foundation, Inc.
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;; Author: Jorgen Schaefer <forcer@forcix.cx>
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;; Maintainer: FSF
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;; Most code is taken verbatim from erc.el, see there for the original
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;; authors.
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;; This file is part of GNU Emacs.
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;; 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
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; This provides some small but still useful modes for ERC.
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;;; Code:
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(require 'erc)
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;;; Imenu support
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(defun erc-imenu-setup ()
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"Setup Imenu support in an ERC buffer."
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(set (make-local-variable 'imenu-create-index-function)
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'erc-create-imenu-index))
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(add-hook 'erc-mode-hook 'erc-imenu-setup)
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(autoload 'erc-create-imenu-index "erc-imenu" "Imenu index creation function")
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;;; Automatically scroll to bottom
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(defcustom erc-input-line-position nil
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"Specify where to position the input line when using `erc-scroll-to-bottom'.
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This should be an integer specifying the line of the buffer on which
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the input line should stay. A value of \"-1\" would keep the input
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line positioned on the last line in the buffer. This is passed as an
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argument to `recenter'."
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:group 'erc-display
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:type '(choice integer (const nil)))
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(define-erc-module scrolltobottom nil
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"This mode causes the prompt to stay at the end of the window."
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((add-hook 'erc-mode-hook 'erc-add-scroll-to-bottom)
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(dolist (buffer (erc-buffer-list))
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(with-current-buffer buffer
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(erc-add-scroll-to-bottom))))
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((remove-hook 'erc-mode-hook 'erc-add-scroll-to-bottom)
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(dolist (buffer (erc-buffer-list))
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(with-current-buffer buffer
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(remove-hook 'post-command-hook 'erc-scroll-to-bottom t)))))
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(defun erc-add-scroll-to-bottom ()
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"A hook function for `erc-mode-hook' to recenter output at bottom of window.
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If you find that ERC hangs when using this function, try customizing
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the value of `erc-input-line-position'.
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This works whenever scrolling happens, so it's added to
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`window-scroll-functions' rather than `erc-insert-post-hook'."
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(add-hook 'post-command-hook 'erc-scroll-to-bottom nil t))
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(defun erc-scroll-to-bottom ()
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"Recenter WINDOW so that `point' is on the last line.
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This is added to `window-scroll-functions' by `erc-add-scroll-to-bottom'.
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You can control which line is recentered to by customizing the
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variable `erc-input-line-position'."
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;; Temporarily bind resize-mini-windows to nil so that users who have it
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;; set to a non-nil value will not suffer from premature minibuffer
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;; shrinkage due to the below recenter call. I have no idea why this
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;; works, but it solves the problem, and has no negative side effects.
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;; (Fran Litterio, 2003/01/07)
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(let ((resize-mini-windows nil))
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(save-restriction
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(widen)
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(when (and erc-insert-marker
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;; we're editing a line. Scroll.
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(> (point) erc-insert-marker))
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(save-excursion
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(goto-char (point-max))
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(recenter (or erc-input-line-position -1)))))))
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;;; Make read only
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(define-erc-module readonly nil
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"This mode causes all inserted text to be read-only."
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((add-hook 'erc-insert-post-hook 'erc-make-read-only)
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(add-hook 'erc-send-post-hook 'erc-make-read-only))
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((remove-hook 'erc-insert-post-hook 'erc-make-read-only)
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(remove-hook 'erc-send-post-hook 'erc-make-read-only)))
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(defun erc-make-read-only ()
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"Make all the text in the current buffer read-only.
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Put this function on `erc-insert-post-hook' and/or `erc-send-post-hook'."
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(put-text-property (point-min) (point-max) 'read-only t)
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(put-text-property (point-min) (point-max) 'front-sticky t)
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(put-text-property (point-min) (point-max) 'rear-nonsticky t))
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;;; Move to prompt when typing text
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(define-erc-module move-to-prompt nil
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"This mode causes the point to be moved to the prompt when typing text."
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((add-hook 'erc-mode-hook 'erc-move-to-prompt-setup)
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(dolist (buffer (erc-buffer-list))
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(with-current-buffer buffer
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(erc-move-to-prompt-setup))))
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((remove-hook 'erc-mode-hook 'erc-move-to-prompt-setup)
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(dolist (buffer (erc-buffer-list))
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(with-current-buffer buffer
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(remove-hook 'pre-command-hook 'erc-move-to-prompt t)))))
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(defun erc-move-to-prompt ()
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"Move the point to the ERC prompt if this is a self-inserting command."
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(when (and erc-input-marker (< (point) erc-input-marker)
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(eq 'self-insert-command this-command))
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(deactivate-mark)
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(push-mark)
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(goto-char (point-max))))
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(defun erc-move-to-prompt-setup ()
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"Initialize the move-to-prompt module for XEmacs."
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(add-hook 'pre-command-hook 'erc-move-to-prompt nil t))
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;;; Keep place in unvisited channels
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(define-erc-module keep-place nil
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"Leave point above un-viewed text in other channels."
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((add-hook 'erc-insert-pre-hook 'erc-keep-place))
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((remove-hook 'erc-insert-pre-hook 'erc-keep-place)))
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(defun erc-keep-place (ignored)
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"Move point away from the last line in a non-selected ERC buffer."
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(when (and (not (eq (window-buffer (selected-window))
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(current-buffer)))
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(>= (point) erc-insert-marker))
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(deactivate-mark)
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(goto-char (erc-beg-of-input-line))
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(forward-line -1)))
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;;; Distinguish non-commands
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(defvar erc-noncommands-list '(erc-cmd-ME
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erc-cmd-COUNTRY
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erc-cmd-SV
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erc-cmd-SM
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erc-cmd-SMV
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erc-cmd-LASTLOG)
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"List of commands that are aliases for CTCP ACTION or for ERC messages.
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If a command's function symbol is in this list, the typed command
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does not appear in the ERC buffer after the user presses ENTER.")
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(define-erc-module noncommands nil
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"This mode distinguishes non-commands.
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Commands listed in `erc-insert-this' know how to display
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themselves."
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((add-hook 'erc-send-pre-hook 'erc-send-distinguish-noncommands))
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((remove-hook 'erc-send-pre-hook 'erc-send-distinguish-noncommands)))
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(defun erc-send-distinguish-noncommands (str)
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"If STR is an ERC non-command, set `erc-insert-this' to nil."
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(let* ((command (erc-extract-command-from-line str))
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(cmd-fun (and command
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(car command))))
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(when (and cmd-fun
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(not (string-match "\n.+$" str))
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(memq cmd-fun erc-noncommands-list))
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(setq erc-insert-this nil))))
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;;; IRC control character processing.
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(defgroup erc-control-characters nil
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"Dealing with control characters."
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:group 'erc)
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(defcustom erc-interpret-controls-p t
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"If non-nil, display IRC colors and other highlighting effects.
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If this is set to the symbol `remove', ERC removes all IRC colors and
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highlighting effects. When this variable is non-nil, it can cause Emacs to run
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slowly on systems lacking sufficient CPU speed. In chatty channels, or in an
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emergency (message flood) it can be turned off to save processing time. See
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`erc-toggle-interpret-controls'."
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:group 'erc-control-characters
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:type '(choice (const :tag "Highlight control characters" t)
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(const :tag "Remove control characters" remove)
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(const :tag "Display raw control characters" nil)))
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(defcustom erc-interpret-mirc-color nil
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"If non-nil, ERC will interpret mIRC color codes."
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:group 'erc-control-characters
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:type 'boolean)
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(defcustom erc-beep-p nil
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"Beep if C-g is in the server message.
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The value `erc-interpret-controls-p' must also be t for this to work."
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:group 'erc-control-characters
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:type 'boolean)
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(defface erc-bold-face '((t :weight bold))
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"ERC bold face."
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:group 'erc-faces)
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(defface erc-inverse-face
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'((t :foreground "White" :background "Black"))
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"ERC inverse face."
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:group 'erc-faces)
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(defface erc-underline-face '((t :underline t))
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"ERC underline face."
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:group 'erc-faces)
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(defface fg:erc-color-face0 '((t :foreground "White"))
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"ERC face."
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:group 'erc-faces)
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(defface fg:erc-color-face1 '((t :foreground "black"))
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"ERC face."
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:group 'erc-faces)
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(defface fg:erc-color-face2 '((t :foreground "blue4"))
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"ERC face."
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:group 'erc-faces)
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(defface fg:erc-color-face3 '((t :foreground "green4"))
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"ERC face."
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:group 'erc-faces)
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(defface fg:erc-color-face4 '((t :foreground "red"))
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"ERC face."
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:group 'erc-faces)
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(defface fg:erc-color-face5 '((t :foreground "brown"))
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"ERC face."
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:group 'erc-faces)
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(defface fg:erc-color-face6 '((t :foreground "purple"))
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"ERC face."
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:group 'erc-faces)
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(defface fg:erc-color-face7 '((t :foreground "orange"))
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"ERC face."
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:group 'erc-faces)
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(defface fg:erc-color-face8 '((t :foreground "yellow"))
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"ERC face."
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:group 'erc-faces)
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(defface fg:erc-color-face9 '((t :foreground "green"))
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"ERC face."
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:group 'erc-faces)
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(defface fg:erc-color-face10 '((t :foreground "lightblue1"))
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"ERC face."
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:group 'erc-faces)
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(defface fg:erc-color-face11 '((t :foreground "cyan"))
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"ERC face."
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:group 'erc-faces)
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(defface fg:erc-color-face12 '((t :foreground "blue"))
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"ERC face."
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:group 'erc-faces)
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(defface fg:erc-color-face13 '((t :foreground "deeppink"))
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"ERC face."
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:group 'erc-faces)
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(defface fg:erc-color-face14 '((t :foreground "gray50"))
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"ERC face."
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:group 'erc-faces)
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(defface fg:erc-color-face15 '((t :foreground "gray90"))
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"ERC face."
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:group 'erc-faces)
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(defface bg:erc-color-face0 '((t :background "White"))
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"ERC face."
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:group 'erc-faces)
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(defface bg:erc-color-face1 '((t :background "black"))
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"ERC face."
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:group 'erc-faces)
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(defface bg:erc-color-face2 '((t :background "blue4"))
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"ERC face."
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:group 'erc-faces)
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(defface bg:erc-color-face3 '((t :background "green4"))
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"ERC face."
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:group 'erc-faces)
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(defface bg:erc-color-face4 '((t :background "red"))
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"ERC face."
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:group 'erc-faces)
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(defface bg:erc-color-face5 '((t :background "brown"))
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"ERC face."
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:group 'erc-faces)
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(defface bg:erc-color-face6 '((t :background "purple"))
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"ERC face."
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:group 'erc-faces)
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(defface bg:erc-color-face7 '((t :background "orange"))
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"ERC face."
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:group 'erc-faces)
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(defface bg:erc-color-face8 '((t :background "yellow"))
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"ERC face."
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:group 'erc-faces)
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(defface bg:erc-color-face9 '((t :background "green"))
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"ERC face."
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:group 'erc-faces)
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(defface bg:erc-color-face10 '((t :background "lightblue1"))
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"ERC face."
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:group 'erc-faces)
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(defface bg:erc-color-face11 '((t :background "cyan"))
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"ERC face."
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:group 'erc-faces)
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(defface bg:erc-color-face12 '((t :background "blue"))
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"ERC face."
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:group 'erc-faces)
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(defface bg:erc-color-face13 '((t :background "deeppink"))
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"ERC face."
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:group 'erc-faces)
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(defface bg:erc-color-face14 '((t :background "gray50"))
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"ERC face."
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:group 'erc-faces)
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(defface bg:erc-color-face15 '((t :background "gray90"))
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"ERC face."
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:group 'erc-faces)
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(defun erc-get-bg-color-face (n)
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"Fetches the right face for background color N (0-15)."
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(if (stringp n) (setq n (string-to-number n)))
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(if (not (numberp n))
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(prog1 'default
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(erc-error "erc-get-bg-color-face: n is NaN: %S" n))
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(when (> n 16)
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(erc-log (format " Wrong color: %s" n))
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(setq n (mod n 16)))
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(cond
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((and (>= n 0) (< n 16))
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(intern (concat "bg:erc-color-face" (number-to-string n))))
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(t (erc-log (format " Wrong color: %s" n)) 'default))))
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(defun erc-get-fg-color-face (n)
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"Fetches the right face for foreground color N (0-15)."
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(if (stringp n) (setq n (string-to-number n)))
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(if (not (numberp n))
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(prog1 'default
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(erc-error "erc-get-fg-color-face: n is NaN: %S" n))
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(when (> n 16)
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(erc-log (format " Wrong color: %s" n))
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(setq n (mod n 16)))
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(cond
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((and (>= n 0) (< n 16))
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(intern (concat "fg:erc-color-face" (number-to-string n))))
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(t (erc-log (format " Wrong color: %s" n)) 'default))))
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(define-erc-module irccontrols nil
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"This mode enables the interpretation of IRC control chars."
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((add-hook 'erc-insert-modify-hook 'erc-controls-highlight)
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(add-hook 'erc-send-modify-hook 'erc-controls-highlight))
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((remove-hook 'erc-insert-modify-hook 'erc-controls-highlight)
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(remove-hook 'erc-send-modify-hook 'erc-controls-highlight)))
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(defun erc-controls-interpret (str)
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"Return a copy of STR after dealing with IRC control characters.
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See `erc-interpret-controls-p' and `erc-interpret-mirc-color' for options."
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(when str
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(let ((s str))
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(cond ((eq erc-interpret-controls-p 'remove)
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(erc-controls-strip s))
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(erc-interpret-controls-p
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(let ((boldp nil)
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(inversep nil)
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(underlinep nil)
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(fg nil)
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(bg nil))
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(while (string-match erc-controls-highlight-regexp s)
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(let ((control (match-string 1 s))
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(fg-color (match-string 2 s))
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(bg-color (match-string 4 s))
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(start (match-beginning 0))
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(end (+ (match-beginning 0)
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(length (match-string 5 s)))))
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(setq s (erc-replace-match-subexpression-in-string
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"" s control 1 start))
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(cond ((and erc-interpret-mirc-color (or fg-color bg-color))
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(setq fg fg-color)
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(setq bg bg-color))
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((string= control "\C-b")
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(setq boldp (not boldp)))
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((string= control "\C-v")
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(setq inversep (not inversep)))
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((string= control "\C-_")
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(setq underlinep (not underlinep)))
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((string= control "\C-c")
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(setq fg nil
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bg nil))
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((string= control "\C-g")
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(when erc-beep-p
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(ding)))
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((string= control "\C-o")
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(setq boldp nil
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inversep nil
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underlinep nil
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fg nil
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bg nil))
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(t nil))
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(erc-controls-propertize
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start end boldp inversep underlinep fg bg s)))
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s))
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(t s)))))
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(defun erc-controls-strip (str)
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"Return a copy of STR with all IRC control characters removed."
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(when str
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(let ((s str))
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(while (string-match erc-controls-remove-regexp s)
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(setq s (replace-match "" nil nil s)))
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s)))
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(defvar erc-controls-remove-regexp
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"\C-b\\|\C-_\\|\C-v\\|\C-g\\|\C-o\\|\C-c[0-9]?[0-9]?\\(,[0-9][0-9]?\\)?"
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"Regular expression which matches control characters to remove.")
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(defvar erc-controls-highlight-regexp
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(concat "\\(\C-b\\|\C-v\\|\C-_\\|\C-g\\|\C-o\\|"
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"\C-c\\([0-9][0-9]?\\)?\\(,\\([0-9][0-9]?\\)\\)?\\)"
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"\\([^\C-b\C-v\C-_\C-c\C-g\C-o\n]*\\)")
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"Regular expression which matches control chars and the text to highlight.")
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(defun erc-controls-highlight ()
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"Highlight IRC control chars in the buffer.
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This is useful for `erc-insert-modify-hook' and `erc-send-modify-hook'.
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Also see `erc-interpret-controls-p' and `erc-interpret-mirc-color'."
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(goto-char (point-min))
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(cond ((eq erc-interpret-controls-p 'remove)
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(while (re-search-forward erc-controls-remove-regexp nil t)
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(replace-match "")))
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(erc-interpret-controls-p
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(let ((boldp nil)
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(inversep nil)
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(underlinep nil)
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(fg nil)
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(bg nil))
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(while (re-search-forward erc-controls-highlight-regexp nil t)
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(let ((control (match-string 1))
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(fg-color (match-string 2))
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(bg-color (match-string 4))
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(start (match-beginning 0))
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(end (+ (match-beginning 0) (length (match-string 5)))))
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|
(replace-match "" nil nil nil 1)
|
|
(cond ((and erc-interpret-mirc-color (or fg-color bg-color))
|
|
(setq fg fg-color)
|
|
(setq bg bg-color))
|
|
((string= control "\C-b")
|
|
(setq boldp (not boldp)))
|
|
((string= control "\C-v")
|
|
(setq inversep (not inversep)))
|
|
((string= control "\C-_")
|
|
(setq underlinep (not underlinep)))
|
|
((string= control "\C-c")
|
|
(setq fg nil
|
|
bg nil))
|
|
((string= control "\C-g")
|
|
(when erc-beep-p
|
|
(ding)))
|
|
((string= control "\C-o")
|
|
(setq boldp nil
|
|
inversep nil
|
|
underlinep nil
|
|
fg nil
|
|
bg nil))
|
|
(t nil))
|
|
(erc-controls-propertize start end
|
|
boldp inversep underlinep fg bg)))))
|
|
(t nil)))
|
|
|
|
(defun erc-controls-propertize (from to boldp inversep underlinep fg bg
|
|
&optional str)
|
|
"Prepend properties from IRC control characters between FROM and TO.
|
|
If optional argument STR is provided, apply to STR, otherwise prepend properties
|
|
to a region in the current buffer."
|
|
(font-lock-prepend-text-property
|
|
from
|
|
to
|
|
'face
|
|
(append (if boldp
|
|
'(erc-bold-face)
|
|
nil)
|
|
(if inversep
|
|
'(erc-inverse-face)
|
|
nil)
|
|
(if underlinep
|
|
'(erc-underline-face)
|
|
nil)
|
|
(if fg
|
|
(list (erc-get-fg-color-face fg))
|
|
nil)
|
|
(if bg
|
|
(list (erc-get-bg-color-face bg))
|
|
nil))
|
|
str)
|
|
str)
|
|
|
|
(defun erc-toggle-interpret-controls (&optional arg)
|
|
"Toggle interpretation of control sequences in messages.
|
|
|
|
If ARG is positive, interpretation is turned on.
|
|
Else interpretation is turned off."
|
|
(interactive "P")
|
|
(cond ((and (numberp arg) (> arg 0))
|
|
(setq erc-interpret-controls-p t))
|
|
(arg (setq erc-interpret-controls-p nil))
|
|
(t (setq erc-interpret-controls-p (not erc-interpret-controls-p))))
|
|
(message "ERC color interpretation %s"
|
|
(if erc-interpret-controls-p "ON" "OFF")))
|
|
|
|
;; Smiley
|
|
(define-erc-module smiley nil
|
|
"This mode translates text-smileys such as :-) into pictures.
|
|
This requires the function `smiley-region', which is defined in
|
|
smiley.el, which is part of Gnus."
|
|
((add-hook 'erc-insert-modify-hook 'erc-smiley)
|
|
(add-hook 'erc-send-modify-hook 'erc-smiley))
|
|
((remove-hook 'erc-insert-modify-hook 'erc-smiley)
|
|
(remove-hook 'erc-send-modify-hook 'erc-smiley)))
|
|
|
|
(defun erc-smiley ()
|
|
"Smilify a region.
|
|
This function should be used with `erc-insert-modify-hook'."
|
|
(when (fboundp 'smiley-region)
|
|
(smiley-region (point-min) (point-max))))
|
|
|
|
;; Unmorse
|
|
(define-erc-module unmorse nil
|
|
"This mode causes morse code in the current channel to be unmorsed."
|
|
((add-hook 'erc-insert-modify-hook 'erc-unmorse))
|
|
((remove-hook 'erc-insert-modify-hook 'erc-unmorse)))
|
|
|
|
(defun erc-unmorse ()
|
|
"Unmorse some text.
|
|
Add this to `erc-insert-modify-hook' if you happen to be on a
|
|
channel that has weird people talking in morse to each other.
|
|
|
|
See also `unmorse-region'."
|
|
(goto-char (point-min))
|
|
(when (re-search-forward "[.-]+\\([.-]*/? *\\)+[.-]+/?" nil t)
|
|
(save-restriction
|
|
(narrow-to-region (match-beginning 0) (match-end 0))
|
|
;; Turn " / " into " "
|
|
(goto-char (point-min))
|
|
(while (re-search-forward " / " nil t)
|
|
(replace-match " "))
|
|
;; Turn "/ " into "/"
|
|
(goto-char (point-min))
|
|
(while (re-search-forward "/ " nil t)
|
|
(replace-match "/"))
|
|
;; Unmorse region
|
|
(unmorse-region (point-min) (point-max)))))
|
|
|
|
;;; erc-occur
|
|
(defun erc-occur (string &optional proc)
|
|
"Search for STRING in all buffers related to current server.
|
|
If called interactively and prefix argument is given, search on all connected
|
|
servers. If called from a program, PROC specifies the server process."
|
|
(interactive
|
|
(list (read-string "Search for: ")
|
|
(if current-prefix-arg
|
|
nil erc-server-process)))
|
|
(if (fboundp 'multi-occur)
|
|
(multi-occur (erc-buffer-list nil proc) string)
|
|
(error "`multi-occur' is not defined as a function")))
|
|
|
|
(provide 'erc-goodies)
|
|
|
|
;;; erc-goodies.el ends here
|