From ba1e96a020b4298916ab9af9c4f80c9cb57e33d7 Mon Sep 17 00:00:00 2001
From: naskya <m@naskya.net>
Date: Fri, 5 May 2023 12:23:44 +0900
Subject: [PATCH] Fix non-ASCII word soft mutes

---
 .../client/src/scripts/check-word-mute.ts     | 45 ++++++++++---------
 1 file changed, 23 insertions(+), 22 deletions(-)

diff --git a/packages/client/src/scripts/check-word-mute.ts b/packages/client/src/scripts/check-word-mute.ts
index 5ff7f24e1b..3237a2c875 100644
--- a/packages/client/src/scripts/check-word-mute.ts
+++ b/packages/client/src/scripts/check-word-mute.ts
@@ -6,10 +6,6 @@ export type Muted = {
 
 const NotMuted = { muted: false, matched: [] };
 
-function escapeRegExp(x: string) {
-	return x.replace(/[.*+?^${}()|[\]\\]/g, "\\$&"); // $& means the whole matched string
-}
-
 function checkWordMute(
 	note: NoteLike,
 	mutedWords: Array<string | string[]>,
@@ -17,38 +13,43 @@ function checkWordMute(
 	const text = ((note.cw ?? "") + " " + (note.text ?? "")).trim();
 	if (text === "") return NotMuted;
 
+	let result = { muted: false, matched: [] };
+
 	for (const mutePattern of mutedWords) {
-		let mute: RegExp;
-		let matched: string[];
 		if (Array.isArray(mutePattern)) {
-			matched = mutePattern.filter((keyword) => keyword !== "");
-			if (matched.length === 0) {
-				continue;
+			// Clean up
+			const keywords = mutePattern.filter((keyword) => keyword !== "");
+
+			if (
+				keywords.length > 0 &&
+				keywords.every((keyword) => text.includes(keyword))
+			) {
+				result.muted = true;
+				result.matched.push(...keywords);
 			}
-			mute = new RegExp(
-				`\\b${matched.map(escapeRegExp).join("\\b.*\\b")}\\b`,
-				"g",
-			);
 		} else {
+			// represents RegExp
 			const regexp = mutePattern.match(/^\/(.+)\/(.*)$/);
+
 			// This should never happen due to input sanitisation.
 			if (!regexp) {
 				console.warn(`Found invalid regex in word mutes: ${mutePattern}`);
 				continue;
 			}
-			mute = new RegExp(regexp[1], regexp[2]);
-			matched = [mutePattern];
-		}
-		try {
-			if (mute.test(text)) {
-				return { muted: true, matched };
+
+			try {
+				if (new RegExp(regexp[1], regexp[2]).test(text)) {
+					result.muted = true;
+					result.matched.push(mutePattern);
+				}
+			} catch (err) {
+				// This should never happen due to input sanitisation.
 			}
-		} catch (err) {
-			// This should never happen due to input sanitisation.
 		}
 	}
 
-	return NotMuted;
+	result.matched = [...new Set(result.matched)];
+	return result;
 }
 
 export function getWordSoftMute(