Regular filehandle:
19: __BEGIN__
28: 'abc\n'
30: 'de'
30: __END__

5 second timeout:
30: __BEGIN__
38: 'ab'
39: 'c\n'
41: 'de'
41: __END__

1 second timeout:
41: __BEGIN__
42: 'a'
45: 'b'
50: 'c\n'
51: 'd'
52: 'e'
52: __END__

10 second timeout:
52: __BEGIN__
61: 'abc\n'
63: 'de'
63: __END__