busybox/shell/ash_test/ash-read/read_t0.tests
Denys Vlasenko eae12688c9 shell: optional support for read -t N.NNN, closes 10101
function                                             old     new   delta
shell_builtin_read                                  1097    1277    +180
dump_procs                                           353     359      +6

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-20 16:09:31 +02:00

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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 ">$reply<[$?]"; }