diff --git a/double_pinyin.schema.yaml b/double_pinyin.schema.yaml
index 1cc996c..84f34df 100644
--- a/double_pinyin.schema.yaml
+++ b/double_pinyin.schema.yaml
@@ -44,7 +44,7 @@ switches:
     reset: 1
   - name: full_shape
     states: [ 半角, 全角 ]
-  - name: single_char  # search.lua 的功能开关，辅码查词时是否单字优先
+  - name: search_single_char  # search.lua 的功能开关，辅码查词时是否单字优先
     abbrev: [词, 单]
     states: [正常, 单字]
 
diff --git a/double_pinyin_abc.schema.yaml b/double_pinyin_abc.schema.yaml
index 6aef038..42da69e 100644
--- a/double_pinyin_abc.schema.yaml
+++ b/double_pinyin_abc.schema.yaml
@@ -44,7 +44,7 @@ switches:
     reset: 1
   - name: full_shape
     states: [ 半角, 全角 ]
-  - name: single_char  # search.lua 的功能开关，辅码查词时是否单字优先
+  - name: search_single_char  # search.lua 的功能开关，辅码查词时是否单字优先
     abbrev: [词, 单]
     states: [正常, 单字]
 
diff --git a/double_pinyin_flypy.schema.yaml b/double_pinyin_flypy.schema.yaml
index 49de764..b3702a7 100644
--- a/double_pinyin_flypy.schema.yaml
+++ b/double_pinyin_flypy.schema.yaml
@@ -44,7 +44,7 @@ switches:
     reset: 1
   - name: full_shape
     states: [ 半角, 全角 ]
-  - name: single_char  # search.lua 的功能开关，辅码查词时是否单字优先
+  - name: search_single_char  # search.lua 的功能开关，辅码查词时是否单字优先
     abbrev: [词, 单]
     states: [正常, 单字]
 
diff --git a/double_pinyin_mspy.schema.yaml b/double_pinyin_mspy.schema.yaml
index a5762d6..2e3571c 100644
--- a/double_pinyin_mspy.schema.yaml
+++ b/double_pinyin_mspy.schema.yaml
@@ -44,7 +44,7 @@ switches:
     reset: 1
   - name: full_shape
     states: [ 半角, 全角 ]
-  - name: single_char  # search.lua 的功能开关，辅码查词时是否单字优先
+  - name: search_single_char  # search.lua 的功能开关，辅码查词时是否单字优先
     abbrev: [词, 单]
     states: [正常, 单字]
 
diff --git a/double_pinyin_sogou.schema.yaml b/double_pinyin_sogou.schema.yaml
index 14e6541..4a75994 100644
--- a/double_pinyin_sogou.schema.yaml
+++ b/double_pinyin_sogou.schema.yaml
@@ -44,7 +44,7 @@ switches:
     reset: 1
   - name: full_shape
     states: [ 半角, 全角 ]
-  - name: single_char  # search.lua 的功能开关，辅码查词时是否单字优先
+  - name: search_single_char  # search.lua 的功能开关，辅码查词时是否单字优先
     abbrev: [词, 单]
     states: [正常, 单字]
 
diff --git a/double_pinyin_ziguang.schema.yaml b/double_pinyin_ziguang.schema.yaml
index 7f57dc6..b0dfca3 100644
--- a/double_pinyin_ziguang.schema.yaml
+++ b/double_pinyin_ziguang.schema.yaml
@@ -44,7 +44,7 @@ switches:
     reset: 1
   - name: full_shape
     states: [ 半角, 全角 ]
-  - name: single_char  # search.lua 的功能开关，辅码查词时是否单字优先
+  - name: search_single_char  # search.lua 的功能开关，辅码查词时是否单字优先
     abbrev: [词, 单]
     states: [正常, 单字]
 
diff --git a/lua/search.lua b/lua/search.lua
old mode 100644
new mode 100755
index 2512f72..abbcc22
--- a/lua/search.lua
+++ b/lua/search.lua
@@ -1,10 +1,9 @@
--- search.lua
--- 拼音辅码查询
 -- Copyright (C) Mirtle <mirtle.cn@outlook.com>
--- Distributed under terms of the MIT license.
--- select_notifier 逻辑取自 AuxFilter
+-- [CC BY 3.0 DEED](https://creativecommons.org/licenses/by/3.0/deed)
 
--- 使用说明：<https://github.com/mirtlecn/rime-radical-pinyin/search.lua.md>
+-- 使用说明：<https://github.com/mirtlecn/rime-radical-pinyin/blob/master/search.lua.md>
+
+-- 感谢 [AuxFilter](https://github.com/HowcanoeWang/rime-lua-aux-code/blob/main/lua/aux_code.lua) 提供参考
 
 local function alt_lua_punc(s)
     if s then
@@ -173,7 +172,7 @@ function f.func(input, env)
     end
 
     -- 查字时是否单字优先
-    local if_single_char_first = env.engine.context:get_option("single_char")
+    local if_single_char_first = env.engine.context:get_option("search_single_char")
 
     local dict_table
     if f.if_schema_lookup then
diff --git a/rime_ice.schema.yaml b/rime_ice.schema.yaml
index d209156..88e4897 100644
--- a/rime_ice.schema.yaml
+++ b/rime_ice.schema.yaml
@@ -32,7 +32,7 @@ switches:
     reset: 1
   - name: full_shape
     states: [ 半角, 全角 ]
-  - name: single_char  # search.lua 的功能开关，辅码查词时是否单字优先
+  - name: search_single_char  # search.lua 的功能开关，辅码查词时是否单字优先
     abbrev: [词, 单]
     states: [正常, 单字]