Can I disable printing lists of small integers as strings in Erlang shell?

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I don’t know if it’s possible to change the default behavior of the shell, but you can at least format your output correctly, using io:format.

Here is an example:

1> io:format("~p~n", [[65, 66, 67]]).
"ABC"
ok
2> io:format("~w~n", [[65, 66, 67]]).
[65,66,67]
ok

And since the shell is only for experimenting / maintenance, io:format() should be at least enough for your real application. Maybe you should also consider to write your own format/print method, e.g. formatPerson() or something like that, which formats everything nicely.

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