[Toybox] default SIGPIPE handler that calls _exit(0)?

[Rich Felker]

On Sat, Apr 25, 2015 at 12:14:44PM -0700, enh wrote:
> what's the plan wrt SIGPIPE? the desktop is pretty inconsistent. many
> (but not all) commands install a signal handler that does _exit(0).
> others (coreutils 8.21's ls, say) do nothing. normally "what you do
> about SIGPIPE" isn't a problem but on Android that leads to a crash
> report and people filing "ls crashed" bugs against me. (our default
> shell PS setup is also noisy about crashes.)

Why not just *block* SIGPIPE (with sigprocmask) so that the write
returns an error (EPIPE) and the program applies the same logic it
would for any other write error?

Rich

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