enhance: 英語混輸僅在 4 碼以上生效

Thanks to @pfeiwu

moran.schema.yaml

@@ -143,6 +143,7 @@ custom_phrase: # 自定義短語
   initial_quality: 1000
 
 english:
+  tag: english
   dictionary: moran_english
   prism: moran_english
   enable_completion: true
@@ -323,6 +324,8 @@ recognizer:
     # CAVEAT: 排除 ^; 避免 ;d 無法自動上屏
     # CAVEAT: ^o 只保留 ^ou 和 ^o$，避免反查被干擾
     has_emoji: '(^[a-np-z][a-z]*/?$)|(^o$)|(^ou[a-z/]*$)'
+    # 外語
+    english: '^[A-Za-z]{4}[A-Za-z]*'
     # 引導外語
     japanese_o: '^ojp[a-z]*$'
 

moran_aux.schema.yaml

@@ -113,6 +113,7 @@ fixed:
   encode_commit_history: true
 
 english:
+  tag: english
   dictionary: moran_english
   enable_user_dict: true
   enable_completion: true
@@ -235,6 +236,8 @@ recognizer:
     reverse_stroke: "^obh[a-z]*$"
     reverse_cangjie5: "^ocj[a-z]*$"
     reverse_zrlf: "^olf[a-z]*$"
+    # 外語
+    english: '^[A-Za-z]{4}[A-Za-z]*'
 
 moran:
   # 預取個數

moran_sentence.schema.yaml

@@ -105,6 +105,7 @@ custom_phrase: # 自定義短語
   initial_quality: 10
 
 english:
+  tag: english
   dictionary: moran_english
   enable_completion: true
   enable_sentence: false
@@ -256,7 +257,8 @@ recognizer:
     reverse_cangjie5: "^ocj[A-Za-z]*$"
     reverse_zrlf: "^olf[A-Za-z]*$"
     reverse_bopomofo: '^ovy[A-Za-z0-9,.;/\-]*$'
-    punct: '^/([0-9]0?|[A-Za-z]+)$'
+    # 外語
+    english: '^[A-Za-z]{4}[A-Za-z]*'
 
 # 默認啓用語言模型
 __include: moran:/octagram/enable_for_sentence