diff --git a/include/tidy.h b/include/tidy.h
index a29e263..bc83b79 100644
--- a/include/tidy.h
+++ b/include/tidy.h
@@ -548,6 +548,8 @@ TIDY_EXPORT int TIDY_CALL         tidySetOutCharEncoding(TidyDoc tdoc,  /**< The
 /** This typedef represents the required signature for your provided callback
  ** function should you wish to register one with tidySetOptionCallback().
  ** Your callback function will be provided with the following parameters.
+ ** Note that this is deprecated and you should instead migrate to
+ ** tidySetConfigCallback().
  ** @param option The option name that was provided.
  ** @param value The option value that was provided
  ** @return Your callback function will return `yes` if it handles the provided
@@ -560,12 +562,38 @@ typedef Bool (TIDY_CALL *TidyOptCallback)(ctmbstr option, ctmbstr value);
  ** configuration file options. Setting this callback allows a LibTidy
  ** application developer to examine command-line and configuration file options
  ** after LibTidy has examined them and failed to recognize them.
+ ** Note that this is deprecated and you should instead migrate to
+ ** tidySetConfigCallback().
  ** @result Returns `yes` upon success.
  */
 TIDY_EXPORT Bool TIDY_CALL          tidySetOptionCallback(TidyDoc tdoc,                /**< The document to apply the callback to. */
                                                           TidyOptCallback pOptCallback /**< The name of a function of type TidyOptCallback() to serve as your callback. */
                                                           );
 
+/** This typedef represents the required signature for your provided callback
+ ** function should you wish to register one with tidySetOptionCallback().
+ ** Your callback function will be provided with the following parameters.
+ ** @param tdoc The document instance for which the callback was invoked.
+ ** @param option The option name that was provided.
+ ** @param value The option value that was provided
+ ** @return Your callback function will return `yes` if it handles the provided
+ **         option, or `no` if it does not. In the latter case, Tidy will issue
+ **         an unknown configuration option error.
+ */
+typedef Bool (TIDY_CALL *TidyConfigCallback)(TidyDoc tdoc, ctmbstr option, ctmbstr value);
+
+/** Applications using TidyLib may want to augment command-line and
+ ** configuration file options. Setting this callback allows a LibTidy
+ ** application developer to examine command-line and configuration file options
+ ** after LibTidy has examined them and failed to recognize them.
+ ** Note that this is deprecated and you should instead migrate to
+ ** tidySetConfigCallback().
+ ** @result Returns `yes` upon success.
+ */
+TIDY_EXPORT Bool TIDY_CALL          tidySetConfigCallback(TidyDoc tdoc,                      /**< The document to apply the callback to. */
+                                                          TidyConfigCallback pConfigCallback /**< The name of a function of type TidyConfigCallback() to serve as your callback. */
+                                                          );
+
 /** @}
  ** @name Option ID Discovery
  ** @{
diff --git a/src/config.c b/src/config.c
index f47e452..cd1d20c 100644
--- a/src/config.c
+++ b/src/config.c
@@ -817,13 +817,14 @@ int TY_(ParseConfigFileEnc)( TidyDocImpl* doc, ctmbstr file, ctmbstr charenc )
                     option->parser( doc, option );
                 else
                 {
-                    if (NULL != doc->pOptCallback)
+                    if ( (NULL != doc->pOptCallback) || (NULL != doc->pConfigCallback) )
                     {
                         TidyConfigImpl* cfg = &doc->config;
                         tmbchar buf[8192];
                         uint i = 0;
                         tchar delim = 0;
                         Bool waswhite = yes;
+                        Bool response = yes;
 
                         tchar c = SkipWhite( cfg );
 
@@ -854,7 +855,14 @@ int TY_(ParseConfigFileEnc)( TidyDocImpl* doc, ctmbstr file, ctmbstr charenc )
                             c = AdvanceChar( cfg );
                         }
                         buf[i] = '\0';
-                        if (no == (*doc->pOptCallback)( name, buf ))
+                        
+                        if ( doc->pOptCallback )
+                            response = response && (*doc->pOptCallback)( name, buf );
+
+                        if ( doc->pConfigCallback )
+                            response = response && (*doc->pConfigCallback)( tidyImplToDoc(doc), name, buf );
+
+                        if (response == no)
                             TY_(ReportUnknownOption)( doc, name );
                     }
                     else
diff --git a/src/tidy-int.h b/src/tidy-int.h
index 7973c74..6bcfaf5 100755
--- a/src/tidy-int.h
+++ b/src/tidy-int.h
@@ -60,6 +60,7 @@ struct _TidyDocImpl
     TidyReportCallback  reportCallback;
     TidyMessageCallback messageCallback;
     TidyOptCallback     pOptCallback;
+    TidyConfigCallback  pConfigCallback;
     TidyPPProgress      progressCallback;
 
     /* Parse + Repair Results */
diff --git a/src/tidylib.c b/src/tidylib.c
index 00906ca..9d7c0a2 100755
--- a/src/tidylib.c
+++ b/src/tidylib.c
@@ -232,6 +232,17 @@ Bool TIDY_CALL        tidySetOptionCallback( TidyDoc tdoc, TidyOptCallback pOptC
   return no;
 }
 
+Bool TIDY_CALL         tidySetConfigCallback(TidyDoc tdoc, TidyConfigCallback pConfigCallback)
+{
+  TidyDocImpl* impl = tidyDocToImpl( tdoc );
+  if ( impl )
+  {
+    impl->pConfigCallback = pConfigCallback;
+    return yes;
+  }
+  return no;
+}
+
 
 int TIDY_CALL     tidyLoadConfig( TidyDoc tdoc, ctmbstr cfgfil )
 {