From 647c824d9315094439c7db4d7817f260441d8e49 Mon Sep 17 00:00:00 2001
From: Vendicated <vendicated@riseup.net>
Date: Wed, 15 Oct 2025 18:20:50 +0200
Subject: [PATCH] fix: update intl hash function

https://github.com/discord/discord-intl/commit/e8598c6dde1d0f3479a8f216fda90265495e77ae
---
 src/plugins/showTimeoutDuration/index.tsx |  4 +-
 src/utils/intlHash.ts                     | 15 ++++++
 src/utils/patches.ts                      | 63 +++++++++++++++++------
 3 files changed, 64 insertions(+), 18 deletions(-)

diff --git a/src/plugins/showTimeoutDuration/index.tsx b/src/plugins/showTimeoutDuration/index.tsx
index 6d13d9fc1..0be7513ec 100644
--- a/src/plugins/showTimeoutDuration/index.tsx
+++ b/src/plugins/showTimeoutDuration/index.tsx
@@ -17,8 +17,8 @@ import { findComponentLazy } from "@webpack";
 import { ChannelStore, GuildMemberStore, Text, TooltipContainer } from "@webpack/common";
 import { ReactNode } from "react";
 
-const countDownFilter = canonicalizeMatch("#{intl::MAX_AGE_NEVER}");
-const CountDown = findComponentLazy(m => m.prototype?.render?.toString().includes(countDownFilter));
+const countDownFilter = canonicalizeMatch(/#{intl::MAX_AGE_NEVER}/);
+const CountDown = findComponentLazy(m => countDownFilter.test(m.prototype?.render?.toString()));
 
 const enum DisplayStyle {
     Tooltip = "tooltip",
diff --git a/src/utils/intlHash.ts b/src/utils/intlHash.ts
index e6b77d095..b66cd4d82 100644
--- a/src/utils/intlHash.ts
+++ b/src/utils/intlHash.ts
@@ -39,6 +39,21 @@ function numberToBytes(number: number | bigint) {
  * `@discord/intl-loader-core`, to be able to hash names at runtime.
  */
 export function runtimeHashMessageKey(key: string): string {
+    const hash = h64(key, 0);
+    const bytes = numberToBytes(hash);
+    return [
+        BASE64_TABLE[bytes[0] >> 2],
+        BASE64_TABLE[((bytes[0] & 0x03) << 4) | (bytes[1] >> 4)],
+        BASE64_TABLE[((bytes[1] & 0x0f) << 2) | (bytes[2] >> 6)],
+        BASE64_TABLE[bytes[2] & 0x3f],
+        BASE64_TABLE[bytes[3] >> 2],
+        BASE64_TABLE[((bytes[3] & 0x03) << 4) | (bytes[4] >> 4)],
+    ].join("");
+}
+
+// Old variant for compatibility
+// TODO: remove once Discord shipped new one everywhere for a while
+export function runtimeHashMessageKeyLegacy(key: string): string {
     const hash = h64(key, 0);
     const bytes = numberToBytes(hash);
     return [
diff --git a/src/utils/patches.ts b/src/utils/patches.ts
index b212e6241..c149765d5 100644
--- a/src/utils/patches.ts
+++ b/src/utils/patches.ts
@@ -16,35 +16,66 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
-import { runtimeHashMessageKey } from "./intlHash";
+import { runtimeHashMessageKey, runtimeHashMessageKeyLegacy } from "./intlHash";
 import { Patch, PatchReplacement, ReplaceFn } from "./types";
 
-export function canonicalizeMatch<T extends RegExp | string>(match: T): T {
+// TODO: remove legacy hashing function once Discord ships new one everywhere for a while
+
+// @ts-expect-error "RegExp.escape" is very new and not yet in DOM types
+const escapeRegex = RegExp.escape || ((s: string) => s.replace(/[.*+?^${}()|[\]\\]/g, "\\$&"));
+
+function getReplacement(isString: boolean, hashed: string) {
+    const hasSpecialChars = !Number.isNaN(Number(hashed[0])) || hashed.includes("+") || hashed.includes("/");
+
+    if (hasSpecialChars) {
+        return isString
+            ? `["${hashed}"]`
+            : String.raw`(?:\["${hashed}"\])`.replaceAll("+", "\\+");
+    }
+
+    return isString ? `.${hashed}` : String.raw`(?:\.${hashed})`;
+}
+
+function getCompatReplacement(key: string) {
+    const hashed = getReplacement(false, runtimeHashMessageKey(key));
+    const legacyHashed = getReplacement(false, runtimeHashMessageKeyLegacy(key));
+
+    return String.raw`(?:${hashed}|${legacyHashed})`;
+}
+
+function canonicalizeMatchCompatString(str: string) {
+    let result = "";
+    let lastIndex = 0;
+    const re = /#{intl::([\w$+/]*)(?:::(\w+))?}/g;
+    for (const match of str.matchAll(re)) {
+        result += escapeRegex(str.slice(lastIndex, match.index));
+        result += getCompatReplacement(match[1]);
+        lastIndex = (match.index ?? 0) + match[0].length;
+    }
+    result += escapeRegex(str.slice(lastIndex));
+    return new RegExp(result);
+}
+
+export function canonicalizeMatch<T extends RegExp | string>(match: T): T extends RegExp ? RegExp : string | RegExp {
+    if (typeof match === "string") {
+        return canonicalizeMatchCompatString(match) as any;
+    }
+
     let partialCanon = typeof match === "string" ? match : match.source;
     partialCanon = partialCanon.replaceAll(/#{intl::([\w$+/]*)(?:::(\w+))?}/g, (_, key, modifier) => {
-        const hashed = modifier === "raw" ? key : runtimeHashMessageKey(key);
-
-        const isString = typeof match === "string";
-        const hasSpecialChars = !Number.isNaN(Number(hashed[0])) || hashed.includes("+") || hashed.includes("/");
-
-        if (hasSpecialChars) {
-            return isString
-                ? `["${hashed}"]`
-                : String.raw`(?:\["${hashed}"\])`.replaceAll("+", "\\+");
-        }
-
-        return isString ? `.${hashed}` : String.raw`(?:\.${hashed})`;
+        if (modifier === "raw") return getReplacement(false, key);
+        return getCompatReplacement(key);
     });
 
     if (typeof match === "string") {
-        return partialCanon as T;
+        return partialCanon as any;
     }
 
     const canonSource = partialCanon.replaceAll("\\i", String.raw`(?:[A-Za-z_$][\w$]*)`);
     const canonRegex = new RegExp(canonSource, match.flags);
     canonRegex.toString = match.toString.bind(match);
 
-    return canonRegex as T;
+    return canonRegex as any;
 }
 
 export function canonicalizeReplace<T extends string | ReplaceFn>(replace: T, pluginPath: string): T {