13.0.0.21 unset /V foo error

May 31, 2008
382
2
PHP:
V:\>ver

TCC  13.00.21   Windows XP [Version 5.1.2600]

V:\>set /V foo=1

V:\>set /V foo
1

V:\>unset /V foo
TCC: Not in environment "foo"
WAD or bug?