optimize: fixed the initial table sizes for "ngx", "ngx.config", and "ngx.re".

src/ngx_http_lua_config.c

@@ -18,7 +18,7 @@ ngx_http_lua_inject_config_api(lua_State *L)
 {
     /* ngx.config */
 
-    lua_newtable(L);    /* .config */
+    lua_createtable(L, 0, 1 /* nrec */);    /* .config */
 
 #if (NGX_DEBUG)
     lua_pushboolean(L, 1);

src/ngx_http_lua_regex.c

@@ -1807,7 +1807,7 @@ ngx_http_lua_inject_regex_api(lua_State *L)
 {
     /* ngx.re */
 
-    lua_newtable(L);    /* .re */
+    lua_createtable(L, 0, 4 /* nrec */);    /* .re */
 
     lua_pushcfunction(L, ngx_http_lua_ngx_re_match);
     lua_setfield(L, -2, "match");

src/ngx_http_lua_util.c

@@ -743,7 +743,7 @@ ngx_http_lua_inject_ngx_api(ngx_conf_t *cf, lua_State *L)
 
     lmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_lua_module);
 
-    lua_createtable(L, 0 /* narr */, 95 /* nrec */);    /* ngx.* */
+    lua_createtable(L, 0 /* narr */, 96 /* nrec */);    /* ngx.* */
 
     ngx_http_lua_inject_arg_api(L);
 

t/062-count.t

@@ -35,7 +35,7 @@ __DATA__
 --- request
 GET /test
 --- response_body
-ngx: 95
+ngx: 96
 --- no_error_log
 [error]
 
@@ -56,7 +56,7 @@ ngx: 95
 --- request
 GET /test
 --- response_body
-95
+96
 --- no_error_log
 [error]
 
@@ -84,7 +84,7 @@ GET /test
 --- request
 GET /test
 --- response_body
-n = 95
+n = 96
 --- no_error_log
 [error]
 
@@ -301,7 +301,7 @@ GET /t
 --- response_body_like: 404 Not Found
 --- error_code: 404
 --- error_log
-ngx. entry count: 95
+ngx. entry count: 96
 
 
 
@@ -323,3 +323,43 @@ n = 1
 --- no_error_log
 [error]
 
+
+
+=== TEST 15: entries under ngx.config
+--- config
+        location = /test {
+            content_by_lua '
+                local n = 0
+                for k, v in pairs(ngx.config) do
+                    n = n + 1
+                end
+                ngx.say("n = ", n)
+            ';
+        }
+--- request
+GET /test
+--- response_body
+n = 1
+--- no_error_log
+[error]
+
+
+
+=== TEST 16: entries under ngx.re
+--- config
+        location = /test {
+            content_by_lua '
+                local n = 0
+                for k, v in pairs(ngx.re) do
+                    n = n + 1
+                end
+                ngx.say("n = ", n)
+            ';
+        }
+--- request
+GET /test
+--- response_body
+n = 4
+--- no_error_log
+[error]
+