This command:

$ west config foo.bar=baz qux

should, I think, either error out, or set an option named foo.bar=baz to qux.

Instead, it does some mix of the two, because afterwards, running:

$ west config foo.bar=baz

results in west exiting 1 with the option unset , but

$ west config -l | grep foo
foo.bar=baz = qux

something is wrong here, likely related to how configparser deals with = signs