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;;; my-nov.el -- Extensions for nov.el -*- lexical-binding: t -*-
;; Copyright (C) 2023 Free Software Foundation.
;; Author: Yuchen Pei <id@ypei.org>
;; Package-Requires: ((emacs "28.2"))
;; This file is part of dotfiles.
;; dotfiles is free software: you can redistribute it and/or modify it under
;; the terms of the GNU Affero General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; dotfiles 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 Affero General
;; Public License for more details.
;; You should have received a copy of the GNU Affero General Public
;; License along with dotfiles. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Extensions for nov.el.
;;; Code:
(require 'nov)
;; override nov-render-title
;; this is because header line does not work with follow mode
(defun my-nov-render-title (dom)
"Custom <title> rendering function for DOM.
Sets `header-line-format' to a combination of the EPUB title and
chapter title."
(let ((title (cdr (assq 'title nov-metadata)))
(chapter-title (car (esxml-node-children dom))))
(when (not chapter-title)
(setq chapter-title "No title"))
;; this shouldn't happen for properly authored EPUBs
(when (not title)
(setq title "No title"))
(setq mode-line-buffer-identification
(concat title ": " chapter-title))
))
(defun my-nov-scroll-up (arg)
"Scroll with `scroll-up' or visit next chapter if at bottom."
(interactive "P")
(if (>= (follow-window-end) (point-max))
(nov-next-document)
(follow-scroll-up arg)))
(provide 'my-nov)
;;; my-nov.el ends here
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