commands between { }

[Jirka Kosina]

Hello,

When I run for example this:

P=0 ; { P=1; echo $P; }    | { cat -; echo $P; }

I get
1
0

Though I would accept
1
1

as commands between { } are executed in the same shell, which made P=0.

What have I overlooked? Or is this a bug?

Thanks a lot in advance

-- 
JiKos.