Re: fewer forks during shell detection

[Eric Blake]

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According to Ralf Wildenhues on 11/11/2008 12:35 PM:
> I haven't found a shell that needs this subshell, but this:
> $ echo '...' | ./foo 2>/dev/null
> 
> causes this output from some bash versions:
> | bash: echo: write error: Broken pipe

But doesn't that only happen if ./foo exits prior to echo being able to
push all its output?  I guess if the shell can't handle the input, it will
exit early, but maybe we could write this as:

echo '...' | { ./foo 2>/dev/null; as_status=$?; cat >/dev/null;
 test $as_status = 0; }

so that there is something to consume all of the echo output?  But I don't
think we have to worry about this unless we get actual reports of a noisy
echo.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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