[Ferm] Subchain confusion

[Max Kellermann]

On 2017/08/24 11:28, "Kiss Gabor (Bitman)" <kissg at ssg.ki.iif.hu> wrote:
> Barely acceptable output:

If that's not the real output, then where does it come from?  This
part confuses me again, and consumes my time for trying to understand
why you posted it here.

>                 @subchain <--
> No rule specified before $jumpkey

It fails because you started your statement with "@subchain", and
there's no rule before it.  That's forbidden, because it doesn't make
sense.  And I have no idea what you're trying to do here, why you use
"@subchain".