[erlang-questions] os:cmd - changed output capture in Erlang 19?

[Bohuslav Svancara]

Hello!

I noticed a difference in the output capturing mechanism in the Erlang 19
release.

It seems this new version captures output to STDERR too.

This is a testing perl code (in "perl_output_test.pl"):

print STDERR "Printed to STDERR\n";
print STDOUT "Printed to STDOUT\n";


This is my Erlang code:

os:cmd("perl_output_test.pl").


Running in Windows 10:

Erlang 18:

Eshell V7.3  (abort with ^G)
1> os:cmd("perl_output_test.pl").
Printed to STDERR
"Printed to STDOUT\r\n"


Erlang 19:

Eshell V8.0  (abort with ^G)
1> os:cmd("perl_output_test.pl").
"Printed to STDERR\r\nPrinted to STDOUT\r\n"


-- 
Best regards,

Bohuslav Svancara
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