- rQwait checks the receive queue to see if there is enough data to
satisfy the following request. If not it returns true (which is
almost always translated into an immediate return false by the
caller).
- rQwait is called quite a bit and this generally allows 4 lines to
become 1 line where it is called.
- rQwait allows simplification of cuttext processing. No global
tracking needed anymore.
Overall, about 60 lines less code.
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