Refactor chat line rendering to support lines with system messages, making it possible to customize the rendering of re-sub messages and eventually other types, like purchases. Fix the emote data structure being all screwed up in self-sent /me commands.

src/utilities/object.js

@@ -167,6 +167,13 @@ export function maybe_call(fn, ctx, ...args) {
 }
 
 
+const SPLIT_REGEX = /[^\uD800-\uDFFF]|[\uD800-\uDBFF][\uDC00-\uDFFF]|[\uD800-\uDFFF]/g;
+
+export function split_chars(str) {
+	return str.match(SPLIT_REGEX);
+}
+
+
 export class SourcedSet {
 	constructor() {
 		this._cache = [];