From 456f926c66d3d9daaf2b91247953c35f95a5f362 Mon Sep 17 00:00:00 2001
From: ShikiSuen <shikisuen@outlook.com>
Date: Tue, 12 Mar 2024 19:47:20 +0800
Subject: [PATCH] Refine .receiveKey().

---
 Sources/Tekkon/Tekkon_SyllableComposer.swift | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/Sources/Tekkon/Tekkon_SyllableComposer.swift b/Sources/Tekkon/Tekkon_SyllableComposer.swift
index e9f2ddd..986a00f 100644
--- a/Sources/Tekkon/Tekkon_SyllableComposer.swift
+++ b/Sources/Tekkon/Tekkon_SyllableComposer.swift
@@ -204,10 +204,8 @@ public extension Tekkon {
         receiveKey(fromPhonabet: translate(key: input))
         return
       }
-      if mapArayuruPinyinIntonation.keys.contains(input) {
-        if let theTone = mapArayuruPinyinIntonation[input] {
-          intonation = Phonabet(theTone)
-        }
+      if let theTone = mapArayuruPinyinIntonation[input] {
+        intonation = Phonabet(theTone)
       } else {
         // 為了防止 romajiBuffer 越敲越長帶來算力負擔，這裡讓它在要溢出時自動丟掉最早輸入的音頭。
         let maxCount: Int = (parser == .ofWadeGilesPinyin) ? 7 : 6