[PD] fexpr~ block limitations - bug

[Alexandre Torres Porres]

Hi Shahrokh and Pd list

I've been testing fexpr~ and it seems it won't get the previous samples
from the previous block.

For example, a simple mean filter like this:

[fexpr~ ($x + $x[-1]) * 0.5]

will not work for the first sample of the block, because it won't get the
last sample from the previous block.

So, I know that in practice it doesn't compromise much, it's just one
sample, but in an 16 point average filter this becomes more of a concern.
One way or another, even for just one sample, I consider this problematic
and a bug, as it should always be able to address previous samples.

Am I right?

thanks
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