Fix signal handling behavior on Ruby 1.8.

lib/capybara/driver/webkit/browser.rb

@@ -118,7 +118,7 @@ def discover_server_port(read_pipe)
     end
 
     def forward_stdout(pipe)
-      while !pipe.eof?
+      while pipe_readable?(pipe)
         line = pipe.readline
         if @stdout
           @stdout.write(line)
@@ -128,6 +128,20 @@ def forward_stdout(pipe)
     rescue EOFError
     end
 
+    if !defined?(RUBY_ENGINE) || (RUBY_ENGINE == "ruby" && RUBY_VERSION <= "1.8")
+      # please note the use of IO::select() here, as it is used specifically to
+      # preserve correct signal handling behavior in ruby 1.8.
+      # https://github.com/thibaudgg/rb-fsevent/commit/d1a868bf8dc72dbca102bedbadff76c7e6c2dc21
+      # https://github.com/thibaudgg/rb-fsevent/blob/1ca42b987596f350ee7b19d8f8210b7b6ae8766b/ext/fsevent/fsevent_watch.c#L171
+      def pipe_readable?(pipe)
+        IO.select([pipe])
+      end
+    else
+      def pipe_readable?(pipe)
+        !pipe.eof?
+      end
+    end
+
     def connect
       Capybara.timeout(5) do
         attempt_connect

src/main.cpp

@@ -1,8 +1,18 @@
 #include "Server.h"
 #include <QtGui>
 #include <iostream>
+#ifdef Q_OS_UNIX
+  #include <unistd.h>
+#endif
 
 int main(int argc, char **argv) {
+#ifdef Q_OS_UNIX
+  if (setpgid(0, 0) < 0) {
+    std::cerr << "Unable to set new process group." << std::endl;
+    return 1;
+  }
+#endif
+
   QApplication app(argc, argv);
   app.setApplicationName("capybara-webkit");
   app.setOrganizationName("thoughtbot, inc");