GNU Bash v.4.4.23-5 built-in function 'set' produces variable outputs

[Ricky Tigg]

Built-in function 'set' produces variable outputs.

OS: Fedora 29 – Component: bash-4.4.23-5.fc29.x86_64

To reproduce:

$ export SSLKEYLOGFILE=/home/user/test

$ set | grep SSL
SSLKEYLOGFILE=/home/user/test
_=SSLKEYLOGFILE

$ set | grep SSL
SSLKEYLOGFILE=/home/user/test

Expected result right after the creation of an environment variable:

$ set | grep SSL
SSLKEYLOGFILE=/home/user/test