Segoe UI Emoji → Twemoji Mozilla by myfonj

/* ==UserStyle==
@name           Segoe UI Emoji → Twemoji Mozilla
@namespace      github.com/openstyles/stylus
@version        1.1.1
@description    In Gecko-based browsers (Firefox) on pages explicitly using systems "Segoe UI Emoji" in their font stack makes them use built-in "Twemoji Mozilla", that is otherwise only a fallback. Sadly, does not work on pages that leave the font stack on the browser/system entirely.
@author         myf
@license        CC0
==/UserStyle== */

/*
Changelog
1.1.1 (2025-02-28) Filled the rest of the range. Strange that it is needed.
1.1.0 (2025-02-28) Added rougly-fenced Segoe UI (No Emoji)
*/
@-moz-document url-prefix("https://"), url-prefix("http://") {
 @font-face {
   font-family: "Segoe UI Emoji";
   src: local("Twemoji Mozilla");
 }
 /* Rougly-fenced "Emoji block" for when page uses generic Segoe UI and relies on internal Emoji fallback behind the scenes */
 @font-face {
   font-family: "Segoe UI";
   src: local("Segoe UI");
   unicode-range: U+0000-2319, U+1faf8-10ffff;
 }
 @font-face {
   font-family: "Segoe UI";
   src: local("Twemoji Mozilla");
   unicode-range: U+231a-1faf8;
 }
}