Re: [PATCH v4 03/12] pkt-line: add packet_flush_gentle()

Jeff King [off-list ref] writes:

  2. It calls check_pipe(), which will turn EPIPE into death-by-SIGPIPE
     (in case you had for some reason ignored SIGPIPE).
...

Thinking about (2), I'd go so far as to say that the trace actually
should just be using:

  if (write_in_full(...) < 0)
	warning("unable to write trace to ...: %s", strerror(errno));

and we should get rid of write_or_whine_pipe entirely.

I like the simplicity the above suggestion gives us.