sudo should have option for clearing the env

[Hein Roehrig]

Package: sudo
Version: 1.6.2p2-1
Severity: wishlist

Hello,

after reading the documentation and browsing the sudo-users mailing 
list archive it appears to me that there is no way to clear 
environment variables beyond the cleaning of "dangerous" variables. 
Two other variables have bitten me in the past: TMPDIR and TZ. 
Therefore I would prefer (at least optionally) to start with a clean 
environment and specify which variables should be carried over 
(possibly renamed).

What do you think? Would there be interest in a patch?

-Hein