diff --git a/chsrc.c b/chsrc.c
index 2afde11..5212197 100644
--- a/chsrc.c
+++ b/chsrc.c
@@ -2,7 +2,7 @@
 * File          : chsrc.c
 * Authors       : Aoran Zeng <ccmywish@qq.com>
 * Created on    : <2023-08-28>
-* Last modified : <2023-09-03>
+* Last modified : <2023-09-04>
 *
 * chsrc:
 *
@@ -154,6 +154,7 @@ common_cesu_ (source_info* sources, size_t size)
       speed = test_speed (url);
     }
     speeds[i] = speed;
+    printf("%d %d\n", i, size);
   }
   int fastidx = dblary_maxidx (speeds, size);
   xy_success (xy_2strjoin("最快镜像站为: ", sources[fastidx].mirror->name));
@@ -458,8 +459,8 @@ void
 _pl_go_check_cmd ()
 {
   char* check_cmd = NULL;
-  if (xy_on_windows) check_cmd = "go --version >nul 2>nul";
-  else               check_cmd = "go --version 1>/dev/null 2>&1";
+  if (xy_on_windows) check_cmd = "go version >nul 2>nul";
+  else               check_cmd = "go version 1>/dev/null 2>&1";
 
   bool exist_b = does_the_program_exist (check_cmd, "go");
 
@@ -944,15 +945,15 @@ def_target_info(pl_ruby);
 def_target_info(pl_python);
 
 target_info
-  pl_nodejs_target = {pl_nodejs_setsrc, NULL,           pl_nodejs_sources, 2},
-  pl_perl_target   = {pl_perl_setsrc,   NULL,           pl_perl_sources,   5},
-  pl_rust_target   = {pl_rust_setsrc,   NULL,           pl_rust_sources,   5},
-  pl_go_target     = {pl_go_setsrc,     NULL,           pl_go_sources,     3},
-  pl_dotnet_target = {pl_dotnet_setsrc, NULL,           pl_dotnet_sources, 1},
-  pl_java_target   = {pl_java_setsrc,   NULL,           pl_java_sources,   1},
-  pl_php_target    = {pl_php_setsrc,    pl_php_getsrc,  pl_php_sources,  pl_php_sources_n},
-  pl_r_target      = {pl_r_setsrc,      NULL,           pl_r_sources,      5},
-  pl_julia_target  = {pl_julia_setsrc,  NULL,           pl_julia_sources,  3};
+  pl_nodejs_target = {pl_nodejs_setsrc, NULL,           pl_nodejs_sources, pl_nodejs_sources_n},
+  pl_perl_target   = {pl_perl_setsrc,   NULL,           pl_perl_sources,   pl_perl_sources_n},
+  pl_rust_target   = {pl_rust_setsrc,   NULL,           pl_rust_sources,   pl_rust_sources_n},
+  pl_go_target     = {pl_go_setsrc,     NULL,           pl_go_sources,     pl_go_sources_n},
+  pl_dotnet_target = {pl_dotnet_setsrc, NULL,           pl_dotnet_sources, pl_dotnet_sources_n},
+  pl_java_target   = {pl_java_setsrc,   NULL,           pl_java_sources,   pl_java_sources_n},
+  pl_php_target    = {pl_php_setsrc,    pl_php_getsrc,  pl_php_sources,    pl_php_sources_n},
+  pl_r_target      = {pl_r_setsrc,      NULL,           pl_r_sources,      pl_r_sources_n},
+  pl_julia_target  = {pl_julia_setsrc,  NULL,           pl_julia_sources,  pl_julia_sources_n};
 
 
 #define targetinfo(t) (const char const*)t
diff --git a/chsrc.h b/chsrc.h
index d5b4c1f..8395f1a 100644
--- a/chsrc.h
+++ b/chsrc.h
@@ -91,7 +91,7 @@ mirror_info
   RubyChina = {"rubychina",    "RubyChina",    "Ruby China 社区",    "https://gems.ruby-china.com/",
                "https://gems.ruby-china.com/rubygems/gems/nokogiri-1.15.0-java.gem"}, // 9.9 MB
 
-  GoProxyCN = {"goproxy.cn",   "Goproxy.cn",   "七牛云 Goproxy.cn",   "https://goproxy.cn/",         NULL},
+  GoProxyCN = {"goproxy.cn",   "Goproxy.cn",   "七牛云 Goproxy.cn",   "https://goproxy.cn/",          NULL},
 
   GoProxyIO = {"goproxy.io",   "GOPROXY.IO",   "GOPROXY.IO",         "https://goproxy.io/",          NULL},
 
@@ -386,6 +386,7 @@ os_mysys2_sources[] = {
 int
 dblary_maxidx(double* array, int size)
 {
+   puts("here");
   double maxval = array[0];
   double maxidx = 0;
 
@@ -395,6 +396,7 @@ dblary_maxidx(double* array, int size)
       maxidx = i;
     }
   }
+  puts("hello");
   return maxidx;
 }
 
@@ -408,11 +410,11 @@ say_for_setsrc (source_info* source)
 }
 
 
-#define def_target_sources_n(t) const size_t t##_sources_n = xy_arylen(pl_ruby_sources)
+#define def_target_sources_n(t) const size_t t##_sources_n = xy_arylen(t##_sources)
 def_target_sources_n(pl_ruby); def_target_sources_n(pl_python); def_target_sources_n(pl_nodejs);
 def_target_sources_n(pl_perl); def_target_sources_n(pl_php);    def_target_sources_n(pl_go);
-def_target_sources_n(pl_rust); def_target_sources_n(pl_java);   def_target_sources_n(pl_r);
-def_target_sources_n(pl_julia);
+def_target_sources_n(pl_rust); def_target_sources_n(pl_java);   def_target_sources_n(pl_dotnet);
+def_target_sources_n(pl_r);    def_target_sources_n(pl_julia);
 
 def_target_sources_n(os_ubuntu); def_target_sources_n(os_debian);  def_target_sources_n(os_fedora);
 def_target_sources_n(os_kali);   def_target_sources_n(os_openbsd); def_target_sources_n(os_mysys2);