Bugzilla – Bug 81
env_delete list modification
Last modified: 2002-05-02 13:58:29 MDT
env_delete -= or = or ! does not work as intended : Cannot remove any of the default values (LIBPATH, NLSPATH etc)
I just tested this and it works fine for me. Note that some environment variables may be removed by the dynamic loader before sudo even runs. Perhaps that's what you are seeing.