[erlang-questions] sys_pre_expand will be removed in OTP 20

Björn Gustavsson <>
Thu Sep 1 10:18:18 CEST 2016

We plan to remove sys_pre_expand in OTP 20:


sys_pre_expand is an undocumented and unsupported module, but since it
has been in Erlang/OTP since the beginning, we thought it better to
give a heads up just in case.


Björn Gustavsson, Erlang/OTP, Ericsson AB

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