I'd like to do the following:

auto pipes = pipeShell(command, Redirect.stdout | Redirect.stderr); 

while(true){

version(A1)

  // do something with line

  if(tryWait(pipes.pid).terminated)

    break;

}

The problem is that 'string line=pipes.stdout.readln;' seems to block until the process is terminated, ie if the command is a long running command that prints a line every 1 second for 10 seconds, this program will wait 10 seconds before starting the processing. 

I also tried with rawRead, readf, fgetc but couldn't make it work.

I'm on OSX, if that matters.

Is there any way to achieve this?