Rework how unicode fonts are set and loaded

core/autoload/config.el

@@ -68,7 +68,8 @@ See `doom|init-fonts'."
   (interactive)
   (when doom-font
     (set-frame-font doom-font t))
-  (doom|init-fonts))
+  (doom|init-fonts)
+  (mapc #'doom|init-emoji-fonts (frame-list)))
 
 ;;;###autoload
 (defun doom/reload-theme ()

core/core-ui.el

@@ -38,11 +38,15 @@ Expects either a `font-spec', font object, a XFT font string or XLFD string. See
 It is recommended you don't set specify a font-size, as to inherit `doom-font's
 size.")
 
-(defvar doom-unicode-font nil
-  "Fallback font for unicode glyphs. Is ignored if :ui unicode is active.
+(defvar doom-unicode-font
+  (if IS-MAC
+      (font-spec :family "Apple Color Emoji")
+    (font-spec :family "Symbola"))
+  "Fallback font for unicode glyphs.
 
-Expects either a `font-spec', font object, a XFT font string or XLFD string. See
-`doom-font' for examples.
+It defaults to Apple Color Emoji on MacOS and Symbola on Linux. Expects either a
+`font-spec', font object, a XFT font string or XLFD string. See `doom-font' for
+examples.
 
 It is recommended you don't set specify a font-size, as to inherit `doom-font's
 size.")
@@ -464,10 +468,7 @@ Fonts are specified by `doom-font', `doom-variable-pitch-font',
         (when doom-serif-font
           (set-face-attribute 'fixed-pitch-serif nil :font doom-serif-font))
         (when doom-variable-pitch-font
-          (set-face-attribute 'variable-pitch nil :font doom-variable-pitch-font))
-        ;; Fallback to `doom-unicode-font' for Unicode characters
-        (when (fontp doom-unicode-font)
-          (set-fontset-font t nil doom-unicode-font nil 'append)))
+          (set-face-attribute 'variable-pitch nil :font doom-variable-pitch-font)))
     ((debug error)
      (if (string-prefix-p "Font not available: " (error-message-string e))
          (lwarn 'doom-ui :warning
@@ -475,6 +476,13 @@ Fonts are specified by `doom-font', `doom-variable-pitch-font',
                 (font-get (caddr e) :family))
        (signal 'doom-error e)))))
 
+(defun doom|init-emoji-fonts (frame)
+  "Set up unicode fonts (if `doom-unicode-font' is set).
+
+By default, this uses Apple Color Emoji on MacOS and Symbola on Linux."
+  (when doom-unicode-font
+    (set-fontset-font t '(#x1F600 . #x1F64F) doom-unicode-font frame 'prepend)))
+
 (defun doom|init-theme (&optional frame)
   "Load the theme specified by `doom-theme' in FRAME."
   (when (and doom-theme (not (memq doom-theme custom-enabled-themes)))
@@ -510,6 +518,8 @@ Fonts are specified by `doom-font', `doom-variable-pitch-font',
   (add-hook 'doom-init-ui-hook #'doom|init-theme))
 ;; Apply `doom-font' et co
 (add-hook 'doom-after-init-modules-hook #'doom|init-fonts)
+;; Ensure unicode fonts are set on each frame
+(add-hook 'after-make-frame-functions #'doom|init-emoji-fonts)
 ;; Setup `doom-load-theme-hook' and ensure `doom-theme' is always set to the
 ;; currently loaded theme
 (advice-add #'load-theme :after #'doom*run-load-theme-hooks)

core/core.el

@@ -163,7 +163,7 @@ Doom was setup, which may cause problems.")
   (setq selection-coding-system 'utf-8))  ; with sugar on top
 
 (setq-default
- ad-redefinition-action 'accept   ; silence advised function warnings
+ ad-redefinition-action 'accept   ; silence redefined function warnings
  apropos-do-all t                 ; make `apropos' more useful
  auto-mode-case-fold nil
  autoload-compute-prefixes nil
@@ -171,7 +171,7 @@ Doom was setup, which may cause problems.")
  jka-compr-verbose doom-debug-mode ; silence compression messages
  ffap-machine-p-known 'reject     ; don't ping things that look like domain names
  find-file-visit-truename t       ; resolve symlinks when opening files
- idle-update-delay 2              ; update ui less often
+ idle-update-delay 2              ; update ui slightly less often
  ;; be quiet at startup; don't load or display anything unnecessary
  inhibit-startup-message t
  inhibit-startup-echo-area-message user-login-name