SEND:\set

SEND:\set var1 foo
SEND:\set
EXPECT:var1 = 'foo'

SEND:\set var2 bar
SEND:\set
EXPECT:var1 = 'foo'
EXPECT:var2 = 'bar'

SEND:\set var3 zoo
SEND:\set
EXPECT:var1 = 'foo'
EXPECT:var2 = 'bar'
EXPECT:var3 = 'zoo'

SEND:\unset
EXPECT:\unset: missing required argument

SEND:\unset non-existent-key

SEND:\unset var1
SEND:\set
EXPECT:var2 = 'bar'
EXPECT:var3 = 'zoo'

SEND:\unset var2 extra
EXPECT:\unset: extra argument "extra" ignored
SEND:\set
EXPECT:var3 = 'zoo'