select hangs after a pipe

[Nakilon]

Describe the problem

select does not work if ruby was called after a pipe

Steps to reproduce the problem

this works fine

ruby -r tty-prompt -e "TTY::Prompt.new.select "1", [2,3]"

this "hangs"

echo 123 | ruby -r tty-prompt -e "p gets; TTY::Prompt.new.select "1", [2,3]"

Describe your environment

• macOS 11.4
• ruby 2.3.8p459
• tty-prompt (0.23.1, 0.20.0)

[Nakilon]

echo 123 | ruby -r tty-prompt -e "p gets; \$stdin = open '/dev/tty'; TTY::Prompt.new.select "1", [2,3]"