Delay Decrease

- Reduced the delay to 1ms.  Note: this is still a hack.
- Added error checking around the 'select' call.

src/A3.cpp

@@ -279,18 +279,19 @@ bool A3::is_command (
 // Add an Arg for every word from std::cin.
 void A3::append_stdin ()
 {
-  // Delay, to give it a chance to buffer the input.
-  delay (0.05);
-
   // Use 'select' to determine whether there is any std::cin content buffered
   // before trying to read it, to prevent blocking.
   struct timeval tv;
-  fd_set fds;
   tv.tv_sec = 0;
-  tv.tv_usec = 0;
+  tv.tv_usec = 1000;
+
+  fd_set fds;
   FD_ZERO (&fds);
   FD_SET (STDIN_FILENO, &fds);
-  select (STDIN_FILENO + 1, &fds, NULL, NULL, &tv);
+
+  int result = select (STDIN_FILENO + 1, &fds, NULL, NULL, &tv);
+  if (result && result != -1)
+  {
     if (FD_ISSET (0, &fds))
     {
       std::string arg;
@@ -303,6 +304,7 @@ void A3::append_stdin ()
         this->push_back (Arg (arg));
       }
     }
+  }
 }
 
 ////////////////////////////////////////////////////////////////////////////////