2 files changed, 6 insertions, 2 deletions
diff --git a/actionpack/lib/action_dispatch/journey/path/pattern.rb b/actionpack/lib/action_dispatch/journey/path/pattern.rb
index 697f5b9d8b..dee2980eb1 100644
--- a/actionpack/lib/action_dispatch/journey/path/pattern.rb
+++ b/actionpack/lib/action_dispatch/journey/path/pattern.rb
@@ -119,7 +119,8 @@ module ActionDispatch
 
         class UnanchoredRegexp < AnchoredRegexp # :nodoc:
           def accept(node)
-            %r{\A#{visit node}(?:\b|\Z)}
+            path = visit node
+            path == "/" ? %r{\A/} : %r{\A#{path}(?:\b|\Z|/)}
           end
         end
 
@@ -136,6 +137,10 @@ module ActionDispatch
             Array.new(length - 1) { |i| self[i + 1] }
           end
 
+          def named_captures
+            @names.zip(captures).to_h
+          end
+
           def [](x)
             idx = @offsets[x - 1] + x
             @match[idx]
diff --git a/actionpack/lib/action_dispatch/journey/routes.rb b/actionpack/lib/action_dispatch/journey/routes.rb
index c0377459d5..3ba8361d77 100644
--- a/actionpack/lib/action_dispatch/journey/routes.rb
+++ b/actionpack/lib/action_dispatch/journey/routes.rb
@@ -56,7 +56,6 @@ module ActionDispatch
       end
 
       def simulator
-        return if ast.nil?
         @simulator ||= begin
           gtg = GTG::Builder.new(ast).transition_table
           GTG::Simulator.new(gtg)