vbscript: Improve parsing of separators in loops and switches.

[Jacek Caban]

Hi Dmitry,

Thanks for the patch, it generally looks good. I have a few comments bellow.

On 20.09.2017 05:48, Dmitry Kislyuk wrote:
>  
> +StSeps
> +    : StSep
> +    | StSep StSeps

Since you're changing all uses of StSep, I think it would make more
sense to change StSep itself to accept multiple separator.

>  x = 0
> -Do While x < 2 : x = x + 1
> +Do While x < 2 :
> +x = x + 1
>  Loop
>  Call ok(x = 2, "x not equal to 2")

Please don't change existing tests like that. We want previous version
tested as well. Add new ones instead.

> @@ -511,7 +533,8 @@ Call collectionObj.reset()
>  y = 0
>  x = 10
>  z = 0
> -for each x in collectionObj : z = z + 2
> +for each x in collectionObj :
> +    :z = z + 2

Same here.

Thanks,
Jacek
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