signals/trapped_from_outside_no_parens.rb

tests/_examples/signals/trapped_from_outside_no_parens.rb in the metorex repository.

# A signal another process sends runs the handler Signal.trap installed.
received = []
Signal.trap(:TERM) { |number| received << number }
system "kill -TERM #{Process.pid}"
sleep 0.01 while received.empty?
p received
Signal.trap :TERM, "DEFAULT"
p Process.kill 0, Process.pid

Output:

[15]
1