open_keyboard on Windows does not receive_line until next keypress

[dymk]

Take this example EM application:

require 'eventmachine'

module KeyboardHandler
  include EM::Protocols::LineText2
  def prompt
    print "> "
  end
  def post_init
    prompt
  end

  def receive_line data
    puts "Got #{data}"
    prompt
  end
end

EM.run {
  EM.open_keyboard KeyboardHandler
}

When run on a *nix machine, it will function as expected, with the entered data being echo'd back to the user after each return key press.
However, on Windows (testing on Win7 x64 Professional), entering a string to the console and pressing return will result in the application pausing, until the user presses another key (such as space or backspace). Note that Ruby can indeed read lines from STDIN correctly on Windows, that can be tested with this snippet:

print "> "
while data = STDIN.readline
  puts "#{data}"
  print "> "
end

[chris-teague]

I've also experienced this issue on both Windows 7 x64 Professional and Windows XP Professional. Dropping back to 1.0.0.rc.2 appears to be a quick fix for the time being.

edit: actually, in further testing this still seems to be existing in rc.1 & rc.2

[cs96and]

I've just started using EventMachine and I'm having this problem with v1.2.0.1. This bug report is 4 years old. Are there any plans to fix it?