From 77f0ba0ddf62479f0dde2f41396918e6184d0aa3 Mon Sep 17 00:00:00 2001
From: piuvas <mail@piuvas.net>
Date: Mon, 2 Jun 2025 22:50:18 -0300
Subject: [PATCH] check for whitespace in instance mutes.

---
 .../pages/settings/mute-block.instance-mute.vue   | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/packages/frontend/src/pages/settings/mute-block.instance-mute.vue b/packages/frontend/src/pages/settings/mute-block.instance-mute.vue
index 862d66ad67..164179d21c 100644
--- a/packages/frontend/src/pages/settings/mute-block.instance-mute.vue
+++ b/packages/frontend/src/pages/settings/mute-block.instance-mute.vue
@@ -22,6 +22,7 @@ import MkButton from '@/components/MkButton.vue';
 import { ensureSignin } from '@/i.js';
 import { misskeyApi } from '@/utility/misskey-api.js';
 import { i18n } from '@/i18n.js';
+import * as os from '@/os.js';
 
 const $i = ensureSignin();
 
@@ -35,13 +36,17 @@ const domainArray = computed(() => {
 const changed = ref(false);
 
 async function save() {
-	const mutes = instanceMutes.value
-		.trim().split('\n')
-		.map(el => el.toLowerCase().trim())
-		.filter(el => el);
+	// checks for a full line without whitespace.
+	if (!domainArray.value.every(d => /^\S+$/.test(d))) {
+		os.alert({
+			type: 'error',
+			title: i18n.ts.invalidValue,
+		});
+		return;
+	}
 
 	await misskeyApi('i/update', {
-		mutedInstances: mutes,
+		mutedInstances: domainArray.value,
 	});
 
 	// Refresh filtered list to signal to the user how they've been saved