[emacs] Enhance epub reading

* emacs/.emacs.d/init/ycp-markup.el: set text-width to be a bit less
than my-org-focus-write width (76 vs 80); increase
next-screen-context-lines in nov mode; set left text margin to 2 in
nov mode
* emacs/.emacs.d/init/ycp-org.el: Add keybindings to nov-mode when
org-remark is available. Unfortunately org-remark-nov-mode is a global
minor mode
* emacs/.emacs.d/lisp/my/my-buffer.el: update my-toggle-focus-write to
use empty buffers on both sides
* emacs/.emacs.d/lisp/my/my-nov.el: a function to set left margin in
nov mode
* emacs/.emacs.d/lisp/my/my-org-remark.el: a convenience function to
org-remark to mark or open depending on active mark

Also use my custom nov.el repo

1 files changed, 36 insertions, 0 deletions

diff --git a/emacs/.emacs.d/lisp/my/my-org-remark.el b/emacs/.emacs.d/lisp/my/my-org-remark.el
new file mode 100644
index 0000000..3e0ef0a
--- /dev/null
+++ b/emacs/.emacs.d/lisp/my/my-org-remark.el
@@ -0,0 +1,36 @@
+;;; my-org-remark.el -- customization to org-remark -*- lexical-binding: t -*-
+
+;; Copyright (C) 2025  Free Software Foundation, Inc.
+
+;; Author: Yuchen Pei <id@ypei.org>
+;; Package-Requires: ((emacs "29.4"))
+
+;; This file is part of dotted.
+
+;; dotted 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.
+
+;; dotted 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 dotted.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; customization to org-remark.
+
+;;; Code:
+
+(defun my-org-remark-open-or-create ()
+  (interactive)
+  (if mark-active
+      (call-interactively 'org-remark-mark)
+    (call-interactively 'org-remark-open)))
+
+(provide 'my-org-remark)
+;;; my-org-remark.el ends here