Correct link ignore regexp

lib/html-proofer/element.rb

@@ -220,6 +220,8 @@ def absolute_path
     end
 
     def ignores_pattern_check(links)
+      return false unless links.is_a?(Array)
+
       links.each do |ignore|
         case ignore
         when String

lib/html-proofer/middleware.rb

@@ -22,7 +22,7 @@ def self.options
         allow_hash_href: true,
         check_external_hash: true,
         check_html: true,
-        url_ignore: [/.*/], # Don't try to check if local files exist
+        url_ignore: [%r{^/}], # Don't try to check if local files exist
         validation: { report_eof_tags: true }
       }
     end

spec/html-proofer/middleware_spec.rb

@@ -32,6 +32,46 @@
     end
   end
 
+  context 'options' do
+    let(:response_fixture) { File.join(File.absolute_path(FIXTURES_DIR), 'links', 'broken_root_link_internal.html') }
+
+    before(:each) do
+      @default_opts = HTMLProofer::Middleware.options[:url_ignore]
+    end
+
+    after(:each) do
+      HTMLProofer::Middleware.options[:url_ignore] = @default_opts
+    end
+
+    let(:middleware_with_ignore) do
+      HTMLProofer::Middleware.options[:url_ignore] = [/broken/]
+      HTMLProofer::Middleware.new(app)
+    end
+    let(:middleware_with_no_ignore) do
+      HTMLProofer::Middleware.options[:url_ignore] = nil
+      HTMLProofer::Middleware.new(app)
+    end
+
+    let(:subject) { middleware.call(request) }
+    let(:subject_with_ignore) { middleware_with_ignore.call(request) }
+    let(:subject_with_no_ignore) { middleware_with_no_ignore.call(request) }
+    context 'internal files' do
+      it 'does not raise an error with default options set' do
+        subject
+      end
+
+      it 'does not raise an error with options explicitly set' do
+        subject_with_ignore
+      end
+
+      it 'does raise an error with options removed' do
+        expect do
+          subject_with_no_ignore
+        end.to raise_error(HTMLProofer::Middleware::InvalidHtmlError)
+      end
+    end
+  end
+
   context 'proofer-ignore' do
     let(:skip_request) { { 'REQUEST_METHOD' => 'GET', 'QUERY_STRING' => 'proofer-ignore' } }
     let(:subject) { middleware.call(skip_request) }