b656e68bc3
Also load early-init from init if early-init-file isn't bound. This improves startup a modest 3-5% for Emacs 27 users.
48 lines
2.1 KiB
EmacsLisp
48 lines
2.1 KiB
EmacsLisp
;;; early-init.el -*- lexical-binding: t; -*-
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;; Emacs HEAD (27+) introduces early-init.el, which is run before init.el,
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;; before package and UI initialization happens. We can use this opportunity to
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;; cull parts of the startup process early and optimize Emacs startup ASAP.
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(unless noninteractive
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(defvar doom--file-name-handler-alist
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file-name-handler-alist)
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(unless after-init-time
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;; A big contributor to long startup times is the garbage collector, so we
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;; up its memory threshold, temporarily and reset it later in
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;; `doom|finalize'.
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(setq gc-cons-threshold 402653184
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gc-cons-percentage 1.0
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;; consulted on every `require', `load' and various file reading
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;; functions. You get a minor speed up by nooping this.
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file-name-handler-alist nil))
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(defun doom|finalize ()
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"Resets garbage collection settings to reasonable defaults (if you don't do
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this, you'll get stuttering and random freezes) and resets
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`file-name-handler-alist'."
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(setq file-name-handler-alist doom--file-name-handler-alist
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gc-cons-threshold 16777216
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gc-cons-percentage 0.15))
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(add-hook 'emacs-startup-hook #'doom|finalize)
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(add-hook 'doom-reload-hook #'doom|finalize))
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;; Ensure Doom is always running out of this file's directory
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(setq user-emacs-directory (file-name-directory load-file-name)
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;; In noninteractive sessions, we hope that non-byte-compiled files will
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;; take precedence over byte-compiled ones, however, if you're getting odd
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;; recursive load errors, it may help to set this to nil.
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load-prefer-newer noninteractive
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;; Package initialize occurs automatically, before `user-init-file' is
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;; loaded, but after `early-init-file'. Doom handles package
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;; initialization, so we must prevent Emacs from doing it early!
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package-enable-at-startup nil)
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;; Prevent the glimpse of un-styled Emacs by setting these early.
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(if (fboundp 'tool-bar-mode) (tool-bar-mode -1))
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(if (fboundp 'menu-bar-mode) (menu-bar-mode -1))
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(if (fboundp 'scroll-bar-mode) (scroll-bar-mode -1))
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;; TODO Once Emacs 27 hits stable, perhaps replace init.el with early-init.el
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