[erlang-questions] Different result using io_lib:format under version 21, Is this expected?

[chris casilli]

Hello,

A few of my tests started failing when run under the newer versions 21.0.
I wanted to ensure this is expected new behavior, before I modify my code to match new results:

With the previous versions this was the result:
io_lib:format(“~.16B”,[255]).
[“FF”]

This is the current result under the new version 21.0 & 20.0.1
io_lib:format(“~.16B”,[255]).
“FF”

Please let me know if this is expected and the new expected result.

Kind Regards,

Chris Casilli