early-init.el

;;; early-init.el --- Early initialization. -*- lexical-binding: t -*-

;; Copyright (C) 2019-2024 Vincent Zhang

;; Author: Vincent Zhang <seagle0128@gmail.com>
;; URL: https://github.com/seagle0128/.emacs.d

;; This file is not part of GNU Emacs.
;;
;; 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, 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; see the file COPYING.  If not, write to
;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth
;; Floor, Boston, MA 02110-1301, USA.
;;

;;; Commentary:
;;
;; Emacs 27 introduces early-init.el, which is run before init.el,
;; before package and UI initialization happens.
;;

;;; Code:

;; Defer garbage collection further back in the startup process
(setq gc-cons-threshold most-positive-fixnum)

;; Prevent unwanted runtime compilation for gccemacs (native-comp) users;
;; packages are compiled ahead-of-time when they are installed and site files
;; are compiled when gccemacs is installed.
(setq native-comp-deferred-compilation nil ;; obsolete since 29.1
      native-comp-jit-compilation nil)

;; Package initialize occurs automatically, before `user-init-file' is
;; loaded, but after `early-init-file'. We handle package
;; initialization, so we must prevent Emacs from doing it early!
(setq package-enable-at-startup nil)

;; `use-package' is builtin since 29.
;; It must be set before loading `use-package'.
(setq use-package-enable-imenu-support t)

;; In noninteractive sessions, prioritize non-byte-compiled source files to
;; prevent the use of stale byte-code. Otherwise, it saves us a little IO time
;; to skip the mtime checks on every *.elc file.
(setq load-prefer-newer noninteractive)

;; Explicitly set the prefered coding systems to avoid annoying prompt
;; from emacs (especially on Microsoft Windows)
(prefer-coding-system 'utf-8)

;; Inhibit resizing frame
(setq frame-inhibit-implied-resize t)

;; Faster to disable these here (before they've been initialized)
(push '(menu-bar-lines . 0) default-frame-alist)
(push '(tool-bar-lines . 0) default-frame-alist)
(push '(vertical-scroll-bars) default-frame-alist)
(when (featurep 'ns)
  (push '(ns-transparent-titlebar . t) default-frame-alist))
(setq-default mode-line-format nil)

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;;; early-init.el ends here