fix bugs and support wide unicode

Author: HoodieRocks

src/lib/text/general.ts

@@ -51,13 +51,21 @@ export function isMarkType(c: JSONContent, type: string) {
 }
 
 export function unescapeUnicode(str: string) {
-	const matches = str.match(/(\\u[0-9a-f]{4})/gi);
+	const regex = /\\u(?:([0-9a-fA-F]{4})|\{([0-9a-fA-F]+)\})/g;
 
-	if (!matches) {
-		return str
-	}
+	return str.replace(regex, (match, p1, p2) => {
+		// p1 will contain the 4-digit hex if it's \uXXXX
+		// p2 will contain the variable hex if it's \u{XXXXX}
+		const hex = p1 || p2; // Get the hex value from whichever group matched
 
-	return str.replaceAll(/(\\u[0-9a-f]{4})/gi, decodeURIComponent(JSON.parse(`"${matches![0]}"`)));
+		if (hex) {
+			const codePoint = parseInt(hex, 16);
+			return String.fromCodePoint(codePoint);
+		}
+		// If for some reason no hex was captured (shouldn't happen with this regex),
+		// return the original match to avoid breaking the string.
+		return match;
+	});
 }
 
 /**

src/lib/text/motd.ts

@@ -1,5 +1,5 @@
 import type { JSONContent } from "@tiptap/core";
-import { colorMap, defaultColorLUT, trueMarkOrUndefined } from "./general";
+import { colorMap, defaultColorLUT, trueMarkOrUndefined, unescapeUnicode } from "./general";
 
 function hexToRgb(hex: string): [number, number, number] {
 	hex = hex.replace(/^#/, "");
@@ -76,7 +76,7 @@ export function translateMOTD(c: JSONContent) {
             let lowestDEVal = "";
             let formatting = ""
 
-			const color = defaultColorLUT(c.marks?.at(0)?.attrs?.color);
+			const color = c.marks?.at(0)?.attrs?.color;
             for (const c of colorMap) {
                 if (!color) {
                     continue;
@@ -99,7 +99,7 @@ export function translateMOTD(c: JSONContent) {
                 }
             }
 
-            data += `${char}r${lowestDEVal}${formatting}${c.text}`
+            data += `${char}r${lowestDEVal}${formatting}${unescapeUnicode(c.text)}`
         }
 		if (i < paragraphs.length - 1) data += "\\n";
     }