Implement stream fusion? about bytestring HOT 1 CLOSED

We originally developed stream fusion in the context of bytestring and lazy bytestring, but in practice I think it's not a good fit for either ByteString or Text, but is for Vector, simply because in practice given what you use ByteString and Text text for there are not many opportunities to fuse things profitably, and there's lots of opportunity to mess things up and make things go slower (I can point out example where Text goes asymptotically slower when things are allowed to fuse).

So basically, no, we thought about it, even implemented it, and it's a bad idea :-)

from bytestring.