#2086 ADDRESS WITH INPUT STEM hangs when stem has 0 elements

[Josep Maria Blasco]

in.0 = 0
address system "cat" with input stem in.
say "done, rc="rc

This should exit with rc 0, but it hangs.

[Josep Maria Blasco]

Claude reports that the fix should consist of moving close(pipe) out of the if in interpreter/platform/unix/SystemCommands.cpp, InputWriterThread::dispatch. I leave that to the cpp experts.

if (inputBuffer != NULL && bufferLength > 0)
{
    if (write(pipe, inputBuffer, bufferLength) < 0) { ... }
    close(pipe);
}

[Erich]

fixed code and added test with revision [r13263]