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+;;; keycast-conf.el --- Configuration of keycast mode  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2022  李俊緯
+
+;; Author: 李俊緯 <mmemmew@gmail.com>
+;; Keywords: emulations, help, tools
+
+;; This program is free software; you can redistribute it and/or modify
+;; 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.
+
+;; This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; Configuring the mode to my liking.
+
+;;; Code:
+
+;;; The original minor mode tries to insert an element to the
+;;; `mode-line-format'.  But my mode line format consists of one
+;;; custom element only, so it is not going to work that way.  Rather,
+;;; I shall define my own minor mode to just skip this part.
+
+(autoload 'use-package "basic")
+
+(use-package "keycast" 'keycast)
+
+(require 'keycast)
+
+(setq keycast-separator-width 0)
+
+(setq keycast-substitute-alist
+      (list (list #'self-insert-command (string #x2e) "Typing...")))
+
+(define-minor-mode durand-keycast-mode
+  "Show current command and its key binding in the mode line."
+  :global t
+  :group 'keycast
+  :lighter "K"
+  (cond
+   (durand-keycast-mode
+    (add-hook 'pre-command-hook #'keycast--update t))
+   (keycast-log-mode)
+   ((remove-hook 'pre-command-hook #'keycast--update))))
+
+(defvar durand-view-map)
+
+(define-key durand-view-map (vector ?k) #'durand-keycast-mode)
+
+(provide 'keycast-conf)
+;;; keycast-conf.el ends here