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# ><[0]
echo Ok | { sleep 0.1; read -t 0 reply; echo ">$reply<[$?]"; }
# This would not be deterministic: returns 0 "data exists" if EOF is seen
# (true terminated) - because EOF is considered to be data (read will not block),
# else returns 1 "no data".
## ><[????]
#true | { read -t 0 reply; echo ">$reply<[$?]"; }
# ><[0]
true | { sleep 0.1; read -t 0 reply; echo ">$reply<[$?]"; }
# ><[1]
sleep 0.2 | { read -p IGNORED_PROMPT -t 0 reply; echo ">$reply<[$?]"; }
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