PuTTY bug unix-plink-stdout-nonblock

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summary: Unix Plink should set O_NONBLOCK on stdout and stderr
class: bug: This is clearly an actual problem we want fixed.
difficulty: fun: Just needs tuits, and not many of them.
priority: medium: This should be fixed one day.
present-in: r7735
fixed-in: r7748 c5996bcde5d83bb7cd7a80bcb8b7479faf1655e0 2007-10-01 (0.61)

If stdout from Unix Plink is going to a FIFO, and the reader of that
FIFO stops reading (say someone has ^Zed it), Plink hangs, stopping
port-forwardings and so forth.  This is silly, and seems to result
from failing to set O_NONBLOCK on stdout and stderr.
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(last revision of this bug record was at 2016-12-27 11:40:21 +0000)