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https://github.com/doomemacs/doomemacs.git
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44d7c8bf37
font-utils.el disable its cache on X and Windows so every check for the existence of a font recomputes the font list, which takes a non-negligible amount of time, at least on X. This default is reasonable as stated in the docstring of font-utils-use-memory-cache: > Disabled on X11 and MS Windows by default, because font-family-list > often gives truncated results before Emacs is fully initialized. This is, however, unreasonable from unicode-fonts, where calls to check the existence of fonts happens in a loop; during the loop, Emacs is not going to suddenly become fully initialized, , so each call is actually recomputing the same font list over and over again. Enabling the font-utils memory cache, at least for the duration of unicode-fonts-setup, thus drastically reduces the initial startup time, or the startup time when the pcache store is reset for some reason.
35 lines
1.5 KiB
EmacsLisp
35 lines
1.5 KiB
EmacsLisp
;;; ui/unicode/autoload.el -*- lexical-binding: t; -*-
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;;;###autoload
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(add-hook! 'after-setting-font-hook :depth -90
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(defun +unicode-init-fonts-h ()
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"Set up `unicode-fonts' to eventually run; accommodating the daemon, if
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necessary."
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(setq-default bidi-display-reordering t)
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(+unicode-setup-fonts-h (selected-frame))))
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;; From font-utils.el, required by unicode-fonts.el.
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;; This only marks the variable as special locally.
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(defvar font-utils-use-memory-cache)
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;;;###autoload
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(defun +unicode-setup-fonts-h (&optional frame)
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"Initialize `unicode-fonts', if in a GUI session.
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If doom-symbol-font is set, add it as a preferred font for all Unicode blocks."
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(when (and frame (display-multi-font-p frame))
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(with-selected-frame frame
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(require 'unicode-fonts)
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(when doom-symbol-font
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(let ((doom-symbol-font-family (plist-get (font-face-attributes doom-symbol-font) :family)))
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(dolist (unicode-block unicode-fonts-block-font-mapping)
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(push doom-symbol-font-family (cadr unicode-block)))))
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(let ((inhibit-redisplay nil)
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(inhibit-message nil)
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;; font-utils says "`font-family-list' often gives truncated results
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;; before Emacs is fully initialized". That is irrelevant when
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;; `unicode-fonts' is testing for the existence of fonts in a loop,
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;; all calls during the same phase in startup and thus would see the
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;; same set of available fonts regardless of caching.
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(font-utils-use-memory-cache t))
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(unicode-fonts-setup)))))
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