Bug Description
At startup I get the standard information and prompt....
If I then paste anything, even something as simple as the character "1"
(without quotes) to the command line, R stops responding to the keyboard.
The "1" is visible on the command line, but pressing <return>, or the arrow
keys, or <esc>, or any other key has no effect. If the text being pasted is
several lines of code, it is executed correctly, and if it outputs to the
console, the output is seen correctly, but afterwards, the keyboard does not
respond. Additional code can be pasted to the command line and it also is
executed correctly.