nimscript does not have {.global.}?

This code:
```nim
proc test =
    var idx {.global.} = 0
    echo idx
    idx += 1

test()
test()
```
gives different results depending on how to execute it:
```
# nim e test.nim
0
0
```
```
# nim r test.nim
0
1
```

Tested on 1.6.2 and latest git revision.