45 lines
1.8 KiB
EmacsLisp
45 lines
1.8 KiB
EmacsLisp
;;; early-init.el --- Pre-init: GC ceiling and frame chrome -*- lexical-binding: t; -*-
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;;; Commentary:
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;; Runs before package.el initialises and before the first frame is drawn, so
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;; it is the only place two things can take effect:
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;; 1. Raising the GC ceiling, so the whole startup (package load + init.el)
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;; runs without garbage-collection pauses.
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;; 2. Removing the menu/tool/scroll bars via `default-frame-alist', so they
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;; are never drawn — toggling the minor modes in init.el instead draws
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;; them and then removes them, a visible flicker on launch.
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;;
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;; Nothing here may depend on a package: none are loaded yet.
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;;
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;; IMPORTANT: the GC bump below is only half the pair. Restore a working value
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;; once startup is done by adding this to init.el:
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;;
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;; (add-hook 'emacs-startup-hook
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;; (lambda () (setq gc-cons-threshold (* 16 1024 1024))))
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;;
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;; Without it, GC never runs again and Emacs slowly eats memory.
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;;; Code:
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Garbage Collection
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Hold GC off for the whole startup; init.el lowers it back on
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;; `emacs-startup-hook' (see the Commentary above).
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(setq gc-cons-threshold most-positive-fixnum)
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Frame Chrome (no flicker)
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Disable the bars before the first frame exists.
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(push '(menu-bar-lines . 0) default-frame-alist)
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(push '(tool-bar-lines . 0) default-frame-alist)
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(push '(vertical-scroll-bars) default-frame-alist)
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;; Don't resize the frame when the UI/fonts change during startup.
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(setq frame-inhibit-implied-resize t)
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;;; early-init.el ends here
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