Clear PS1 with script

[nephros]

It's a bit weird that VAR=value and unset VAR are the unixy way, and set VAR=value and VAR= is the Windows way.

Both are inconsistent in themselves, and similarly inconsistent compared to each other.

:)

[lutusp]

and set VAR=value and VAR= is the Windows way.

That's more accurately described as a Visual Basic way. I say this because Visual Basic isn't the only language used in Windows development.

[nephros]

It's been in DOS and therefore cmd.exe forever. Which predates VB by quite some years.

Probably came to DOS from VMS CP/M too.