Kenta Murata

https://jupyter-client.readthedocs.io/en/latest/messaging.html#debug-request

Subprocess's stdout and stderr aren't redirected to the notebook

1

When I execute `system("echo Hello World")`, the output of `echo` command wasn't displayed on the notebook, but was appeared on the console.

Wrong traceback

1

When an exception is raised in the code in a code cell, IRuby reported a traceback with wrong line numbers and needless traceback entries which is in pry. For example,...

We need to insert `nil` even if the code raises syntax error. 

Introduce control port

1

See https://jupyter-client.readthedocs.io/en/stable/messaging.html to learn what is control port.

ipykernel specifies 1000ms linger period for each socket.

If the parent process has already been dead, IRuby kernel should quit.

``` 1) Error: IntegrationTest#test_interaction: Errno::EIO: Input/output error @ io_fillbuf - fd:7 /dev/pts/1 /usr/local/lib/ruby/2.5.0/expect.rb:47:in `eof?' /usr/local/lib/ruby/2.5.0/expect.rb:47:in `expect' /iruby/test/integration_test.rb:27:in `expect' /iruby/test/integration_test.rb:11:in `setup' ```

Avoiding `warning: possibly useless use of + in void context`

1

Our `inplace` idiom occurs warning like `warning: possibly useless use of + in void context`. To avoid such warnings, how do you think defining `inplace=`? With this method, we can...