Arguments

key  (string) the registry key to be deleted (left side on regedit.exe)
val-name  (string, optional) ; if omitted, the entire registry key is deleted, including all values (right side in regedit.exe);
if name is an empty string, the "" (standard nameless value) is cleared

Return

T if the key/value is successfully deleted, NIL otherwise

Example

Remarks

if key has sub-keys, it can not be deleted; use (vl-registry-descendents) in such cases first, and delete each sub-key explicitly