(Emacs)+hide-mode-line package

My custom package to quickly hide and restore the mode line.  Olivetti
does this automatically but I like having no mode line without the
other changes.

Emacs/.config/emacs/elisp/hide-mode-line.el

@@ -0,0 +1,41 @@
+;;; hide-mode-line.el --- Hide the modeline super easy  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2023  Aryadev Chavali
+
+;; Author: Aryadev Chavali <aryadev@aryadevchavali.com>
+;; Keywords:
+
+;; 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:
+
+;; Defines a minor mode which toggles off the mode line.
+
+;;; Code:
+
+(defvar hide-mode-line--prev-mode-line nil)
+
+(define-minor-mode
+  hide-mode-line-mode
+  "Hides the mode line."
+  :lighter nil
+  (if mode-line-format
+      (progn
+        (setq-local hide-mode-line--prev-mode-line mode-line-format)
+        (setq-local mode-line-format nil))
+      (setq-local mode-line-format hide-mode-line--prev-mode-line)))
+
+
+(provide 'hide-mode-line)
+;;; hide-mode-line.el ends here