Replace timeout with retries based approach

Somehow, using Timeout was causing the Broken Pipe
errors in Culerity. Until someone can explain
how and why, this approach seems to work without
any significant drawbacks.

lib/capybara.rb

@@ -11,15 +11,11 @@ module Capybara
 
   class << self
     attr_accessor :debug, :asset_root, :app_host
-    attr_writer :default_selector, :default_wait_timeout
+    attr_writer :default_selector
 
     def default_selector
       @default_selector ||= :xpath
     end
-    
-    def default_wait_timeout
-      @default_wait_timeout ||= 1
-    end
 
     def log(message)
       puts "[capybara] #{message}" if debug

lib/capybara/session.rb

@@ -130,40 +130,22 @@ module Capybara
     end
 
     def wait_for(locator)
-      return find(locator) unless driver.wait?
-      8.times do
-        result = find(locator)
-        return result if result
-        sleep(0.1)
-      end
-      nil
+      wait_until { find(locator) }
     end
   
     def wait_for_condition(script)
-      begin
-        Timeout.timeout(Capybara.default_wait_timeout) do
-          result = false
-          until result
-            result = evaluate_script(script)
-          end
-          return result
-        end
-      rescue Timeout::Error
-        return false
-      end
+      wait_until { evaluate_script(script) }
     end
 
-    def wait_until(timeout = Capybara.default_wait_timeout, &block)
+    def wait_until
       return yield unless driver.wait?
-
-      returned = nil
-      Timeout.timeout(timeout) do
-        sleep(0.1) until returned = yield
+      10.times do
+        if result = yield
+          return result
+        end
+        sleep(0.1)
       end
-    rescue Timeout::Error
-      return false
-    else
-      return returned    
+      nil
     end
     
     def evaluate_script(script)

spec/session_with_javascript_support_spec.rb

@@ -33,7 +33,7 @@ shared_examples_for "session with javascript support" do
     it "should return false if block doesn't return true within timeout" do
       @session.visit('/with_html')
 
-      @session.wait_until { false }.should be_false
+      @session.wait_until { false }.should be_nil
     end
 
   end