diff --git a/doc/02-Write-A-Recipe-Even-If-You-Dont-Know-C.md b/doc/02-Write-A-Recipe-Even-If-You-Dont-Know-C.md
index 1be7f41..90fa171 100644
--- a/doc/02-Write-A-Recipe-Even-If-You-Dont-Know-C.md
+++ b/doc/02-Write-A-Recipe-Even-If-You-Dont-Know-C.md
@@ -7,7 +7,7 @@
  ! Contributors  :  Nul None  <nul@none.org>
  !               |
  ! Created On    : <2024-08-19>
- ! Last Modified : <2025-03-06>
+ ! Last Modified : <2025-07-14>
  ! ---------------------------------------------------------- -->
 
 # Write A Recipe Even If You Don't Know C
@@ -23,7 +23,7 @@
 1. 本项目采用 `GPLv3+` 协议，是真正的**自由软件**，而非仅仅是开源软件
 2. 代码规范灵活遵循 `GNU` 标准（若标准干扰了可维护性，则并不采纳）
 3. 高度模块化，目录结构清晰易懂
-4. 极小依赖，极易构建，只需要 `GCC` 或 `Clang` 即可编译
+4. 极小依赖，极易构建，只需要 `GCC` 或 `Clang` 即可编译 (`make` 和 `just`可简化，但不是必需的)
 5. 易于将 `shell` 脚本转换为等价的 `recipe`
 6. 已有大量 `recipe` 可提供参考，并提供了 [recipe template] 供直接使用
 7. 提供持续关注镜像站可用性的协作平台:
@@ -83,6 +83,9 @@
 
     1. `framework/core.c` 中以 `chsrc_` 开头的所有函数或宏
     2. `xy.h` 中以 `xy_` 开头的所有函数或宏
+    3. `chec.h` 中以 `chef_` 开头的所有函数或宏
+
+    一个简单的方法是，在 VS Code 中按快捷键 `Ctrl-T` 搜索上述三种前缀
 
 7. 在 `recipe/menu.c` 中添加用户可以使用的 `target` 别名
 
diff --git a/src/framework/chef.h b/src/framework/chef.h
index 0dd6b28..1e1d5df 100644
--- a/src/framework/chef.h
+++ b/src/framework/chef.h
@@ -14,7 +14,7 @@
 #pragma once
 
 bool
-is_url (const char *str)
+chef_is_url (const char *str)
 {
   return (xy_str_start_with (str, "http://") || xy_str_start_with (str, "https://"));
 }
diff --git a/src/framework/core.c b/src/framework/core.c
index 52979f2..357ce44 100644
--- a/src/framework/core.c
+++ b/src/framework/core.c
@@ -451,7 +451,7 @@ chsrc_check_file (char *path)
 int
 query_provider_exist (Source_t *sources, size_t size, char *target, char *input)
 {
-  if (is_url (input))
+  if (chef_is_url (input))
     {
       char *msg = ENGLISH ? "Using user-defined sources for this software is not supported at this time, please contact the developers to ask why or request support" : "暂不支持对该软件使用用户自定义源，请联系开发者询问原因或请求支持";
       chsrc_error (msg);
@@ -706,7 +706,7 @@ measure_speed_for_every_source (Source_t sources[], int size, double speed_recor
         }
       else if (!provider_skip && provider_speed_url)
         {
-          if (is_url(provider_speed_url))
+          if (chef_is_url (provider_speed_url))
             {
               url = xy_strdup (provider_speed_url);
               chsrc_debug ("m", xy_2strjoin ("使用镜像站整体测速链接: ", url));
@@ -719,7 +719,7 @@ measure_speed_for_every_source (Source_t sources[], int size, double speed_recor
 
       if (dedicated_speed_url)
         {
-          if (is_url(dedicated_speed_url))
+          if (chef_is_url (dedicated_speed_url))
             {
               url = xy_strdup (dedicated_speed_url);
               has_dedicated_speed_url = true;
@@ -843,7 +843,7 @@ sources_prepare_speedurl_with_postfix (Source_t sources[], int n, char *postfix)
       if (src->url)
         {
           /* 为空时才修改 或者里面是脏数据 */
-          if (NULL==src->speed_measure_url || !is_url(src->speed_measure_url))
+          if (NULL==src->speed_measure_url || !chef_is_url (src->speed_measure_url))
             src->speed_measure_url = xy_2strjoin (src->url, postfix);
         }
     }
@@ -1010,7 +1010,7 @@ source_has_empty_url (Source_t *source)
     { \
       source = for_what##_sources[ProgStatus.leader_selected_index]; \
     } \
-  else if (is_url (option)) \
+  else if (chef_is_url (option)) \
     { \
       Source_t __tmp = { &UserDefinedProvider, option }; \
       source = __tmp; \
@@ -1427,7 +1427,7 @@ chsrc_append_to_file (const char *str, const char *filename)
   if (NULL==f)
     {
       char *msg = ENGLISH ? xy_2strjoin ("Unable to open file to write: ", file)
-                                   : xy_2strjoin ("无法打开文件以写入: ", file);
+                          : xy_2strjoin ("无法打开文件以写入: ", file);
       chsrc_error2 (msg);
       exit (Exit_UserCause);
     }
diff --git a/src/recipe/lang/Ruby.c b/src/recipe/lang/Ruby.c
index 2c163a1..7449f28 100644
--- a/src/recipe/lang/Ruby.c
+++ b/src/recipe/lang/Ruby.c
@@ -56,7 +56,7 @@ void
 pl_ruby_remove_gem_source (const char *source)
 {
   char *cmd = NULL;
-  if (is_url (source))
+  if (chef_is_url (source))
     {
       cmd = xy_2strjoin ("gem sources -r ", source);
       chsrc_run (cmd, RunOpt_Default);