Hi Eric,
* Eric Blake wrote on Wed, Nov 12, 2008 at 03:51:35AM CET:
> 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?
Sure. That was the case in the example you gave, though.
I haven't checked whether that test case matched the code
you are using in Autoconf.
> 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?
I think you should be able to use
echo '...' 2>/dev/null | ./foo 2>/dev/null
> But I don't think we have to worry about this unless we get actual
> reports of a noisy echo.
Well, tell me where in the code this construct is used, and I will
check whether it can be exposed.
Cheers,
Ralf
