documented the new lua_use_default_type directive.

README

@@ -233,12 +233,29 @@ Description
     in a small memory footprint in Lua even when under heavy loads.
 
 Directives
+  lua_use_default_type
+    syntax: *lua_use_default_type on | off*
+
+    default: *lua_use_default_type on*
+
+    context: *http, server, location, location if*
+
+    Specifies whether to use the MIME type specified by the default_type
+    (<http://nginx.org/en/docs/http/ngx_http_core_module.html#default_type>)
+    directive for the default value of the "Content-Type" response header.
+    If you do not want a default "Content-Type" response header for your Lua
+    request handlers, then turn this directive off.
+
+    This directive is turned on by default.
+
+    This directive was first introduced in the "v0.9.1" release.
+
   lua_code_cache
     syntax: *lua_code_cache on | off*
 
     default: *lua_code_cache on*
 
-    context: *main, server, location, location if*
+    context: *http, server, location, location if*
 
     Enables or disables the Lua code cache for set_by_lua_file,
     content_by_lua_file, rewrite_by_lua_file, and access_by_lua_file, and

README.markdown

@@ -18,6 +18,7 @@ Table of Contents
 * [Synopsis](#synopsis)
 * [Description](#description)
 * [Directives](#directives)
+    * [lua_use_default_type](#lua_use_default_type)
     * [lua_code_cache](#lua_code_cache)
     * [lua_regex_cache_max_entries](#lua_regex_cache_max_entries)
     * [lua_regex_match_limit](#lua_regex_match_limit)
@@ -419,13 +420,29 @@ Directives
 
 [Back to TOC](#table-of-contents)
 
+lua_use_default_type
+--------------------
+**syntax:** *lua_use_default_type on | off*
+
+**default:** *lua_use_default_type on*
+
+**context:** *http, server, location, location if*
+
+Specifies whether to use the MIME type specified by the [default_type](http://nginx.org/en/docs/http/ngx_http_core_module.html#default_type) directive for the default value of the `Content-Type` response header. If you do not want a default `Content-Type` response header for your Lua request handlers, then turn this directive off.
+
+This directive is turned on by default.
+
+This directive was first introduced in the `v0.9.1` release.
+
+[Back to TOC](#table-of-contents)
+
 lua_code_cache
 --------------
 **syntax:** *lua_code_cache on | off*
 
 **default:** *lua_code_cache on*
 
-**context:** *main, server, location, location if*
+**context:** *http, server, location, location if*
 
 Enables or disables the Lua code cache for [set_by_lua_file](#set_by_lua_file),
 [content_by_lua_file](#content_by_lua_file), [rewrite_by_lua_file](#rewrite_by_lua_file), and

doc/HttpLuaModule.wiki

@@ -210,12 +210,25 @@ Loaded Lua modules persist in the nginx worker process level resulting in a smal
 
 = Directives =
 
+== lua_use_default_type ==
+'''syntax:''' ''lua_use_default_type on | off''
+
+'''default:''' ''lua_use_default_type on''
+
+'''context:''' ''http, server, location, location if''
+
+Specifies whether to use the MIME type specified by the [http://nginx.org/en/docs/http/ngx_http_core_module.html#default_type default_type] directive for the default value of the <code>Content-Type</code> response header. If you do not want a default <code>Content-Type</code> response header for your Lua request handlers, then turn this directive off.
+
+This directive is turned on by default.
+
+This directive was first introduced in the <code>v0.9.1</code> release.
+
 == lua_code_cache ==
 '''syntax:''' ''lua_code_cache on | off''
 
 '''default:''' ''lua_code_cache on''
 
-'''context:''' ''main, server, location, location if''
+'''context:''' ''http, server, location, location if''
 
 Enables or disables the Lua code cache for [[#set_by_lua_file|set_by_lua_file]],
 [[#content_by_lua_file|content_by_lua_file]], [[#rewrite_by_lua_file|rewrite_by_lua_file]], and