Purge environment variable

[horst]

SetEnvironmentVariable("Vdrive","")
should purge the variable. Instead the variable still exists (with empty assignment).
The equivalent API function works correctly.

For example (at the console) the command SET Vdrive
should display:
---- The environment variable is not defined
and not:
---- Vdrive=

Existing, but empty variables may have unpredictable consequences.

[freak]

Try RemoveEnvironmentVariable()

[horst]

Try RemoveEnvironmentVariable()

Sorry, I did not expect this, because I was used to the DOS/Windows behaviour.
Now I always have to remember to use this construct for setting variables:

Code: Select all

If Vdrive
  SetEnvironmentVariable("Vdrive",Vdrive)
Else 
  RemoveEnvironmentVariable("Vdrive")
EndIf 

Edit: .. or use a macro..
Maybe a little hint in the SetEnvironmentVariable help would be helpful.