From 7113fc037ca349a88527ea3b3776cf75ed56a54f Mon Sep 17 00:00:00 2001
From: CMK <cirno.mainasuk@gmail.com>
Date: Sat, 9 Oct 2021 16:16:11 +0800
Subject: [PATCH] fix: reply crate duplicate mention issue. resolve #293

---
 Mastodon/Scene/Compose/ComposeViewModel.swift | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Mastodon/Scene/Compose/ComposeViewModel.swift b/Mastodon/Scene/Compose/ComposeViewModel.swift
index f91565d38..d61be5fdd 100644
--- a/Mastodon/Scene/Compose/ComposeViewModel.swift
+++ b/Mastodon/Scene/Compose/ComposeViewModel.swift
@@ -151,7 +151,9 @@ final class ComposeViewModel: NSObject {
                     .sorted(by: { $0.index.intValue < $1.index.intValue })
                     .filter { $0.id != composeAuthor?.id }
                 for mention in mentions {
-                    mentionAccts.append("@" + mention.acct)
+                    let acct = "@" + mention.acct
+                    guard !mentionAccts.contains(acct) else { continue }
+                    mentionAccts.append(acct)
                 }
                 for acct in mentionAccts {
                     UITextChecker.learnWord(acct)