`filter_sensitive_data` doesn't work with dynamic query parameter substitution

[jscheid]

When using filter_sensitive_data with a value extracted dynamically from a query parameter, the cassette fails to replay, apparently because VCR is comparing the URL without substitution to the sanitized one.

There's a simple workaround, but in an ideal world it wouldn't be necessary:

match_requests_on: [VCR.request_matchers.uri_without_param(:secret)]

Here is a failing test case:

diff --git a/spec/lib/vcr/configuration_spec.rb b/spec/lib/vcr/configuration_spec.rb
index 5e555e5..85701a9 100644
--- a/spec/lib/vcr/configuration_spec.rb
+++ b/spec/lib/vcr/configuration_spec.rb
@@ -158,6 +158,20 @@ RSpec.describe VCR::Configuration do
         end
       end
     end
+
+    specify 'the filter_sensitive_data option works with dynamic query parameters' do
+      VCR.configure do |c|
+        c.filter_sensitive_data('<SECRET>') do |interaction|
+          Rack::Utils.parse_query(URI(interaction.request.uri).query)['secret']
+        end
+      end
+
+      2.times do
+        VCR.use_cassette("example") do
+          ::Net::HTTP.get_response(URI("http://localhost:#{VCR::SinatraApp.port}/foo?secret=1234"))
+        end
+      end
+    end
   end
 
   [:before_record, :before_playback].each do |hook_type|

I've tried fixing this but got lost in hooks...