Re: [PATCH] Use setenv(), fix warnings

Timo Hirvonen [off-list ref] writes:

putenv(3):
    "If the argument `string` is of the form `name`, and does not
    contain an `=' character, then the variable `name` is removed from
    the environment."

So the variable is emptied, not removed.  But usually empty environment
variables are treated as if they didn't exist...

Yes we were aware of that when we did it.