diff -Nur PEGTL-2.8.0/include/tao/pegtl/contrib/rep_one_min_max.hpp PEGTL-2.8.0-new/include/tao/pegtl/contrib/rep_one_min_max.hpp
--- PEGTL-2.8.0/include/tao/pegtl/contrib/rep_one_min_max.hpp	2019-04-10 02:27:36.000000000 +0800
+++ PEGTL-2.8.0-new/include/tao/pegtl/contrib/rep_one_min_max.hpp	2021-08-02 10:13:41.000000000 +0800
@@ -1,4 +1,4 @@
-// Copyright (c) 2017-2019 Dr. Colin Hirsch and Daniel Frey
+// Copyright (c) 2017-2020 Dr. Colin Hirsch and Daniel Frey
 // Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/
 
 #ifndef TAO_PEGTL_CONTRIB_REP_ONE_MIN_MAX_HPP
@@ -41,6 +41,27 @@
                   bump_help< result_on_found::success, Input, char, C >( in, i );
                   return true;
                }
+               return false;
+            }
+         };
+		 
+         template< unsigned Max, char C >
+         struct rep_one_min_max< 0, Max, C >
+         {
+            using analyze_t = analysis::counted< analysis::rule_type::any, 0 >;
+
+            template< typename Input >
+            static bool match( Input& in )
+            {
+               const auto size = in.size( Max + 1 );
+               std::size_t i = 0;
+               while( ( i < size ) && ( in.peek_char( i ) == C ) ) {
+                  ++i;
+               }
+               if( i <= Max ) {
+                  bump_help< result_on_found::success, Input, char, C >( in, i );
+                  return true;
+               }
                return false;
             }
          };