Improve 'set-fontset-font' documentation

* doc/emacs/mule.texi (Modifying Fontsets): Add an 'emoji' example.

(cherry picked from commit c38d5cc3b280394bbbb9b579cbc82455077ac9b1)

diff --git a/doc/emacs/mule.texi b/doc/emacs/mule.texi
index 55dd74c48a333934b1de715b3eb62ac9f4170b21..8b16c661a7ed7d5ec245e5af9c095c380470d02f 100644 (file)
--- a/doc/emacs/mule.texi
+++ b/doc/emacs/mule.texi
@@ -1657,6 +1657,16 @@ used.  Some examples are:
                   'han (font-spec :registry "big5")
                   nil 'prepend)
 
+@cindex emoji font
+;; Use "Noto Color Emoji" for the emoji script (this is the default).
+(set-fontset-font "fontset-default" 'emoji
+                  '("Noto Color Emoji" . "iso10646-1")
+                  nil 'prepend)
+
+;; Display the "heart" character using a color font.
+(set-fontset-font "fontset-default"
+                  #x2764 "Noto Color Emoji")
+
 ;; Use MyPrivateFont for the Unicode private use area.
 (set-fontset-font "fontset-default"  '(#xe000 . #xf8ff)
                   "MyPrivateFont")