We're only ever finding a single xpath expression

lib/capybara/node/finders.rb

@@ -114,9 +114,8 @@ module Capybara
       #
       def all(*args)
         query = Capybara::Query.new(*args)
-        query.xpaths.
-          map    { |path| find_in_base(query, path) }.flatten.
-          select { |node| query.matches_filters?(node) }
+
+        find_in_base(query, query.xpath).select { |node| query.matches_filters?(node) }
       end
 
       ##

lib/capybara/query.rb

@@ -25,6 +25,10 @@ module Capybara
       end
     end
 
+    def xpath
+      xpaths.first
+    end
+
     def failure_message(type, node)
       message = selector.failure_message.call(node, self) if selector.failure_message
       message ||= options[:message]