spawn_sync

function spawn_sync(

  working_directory: Pgchar;

  command_line: Pgchar;

  argv: PPgchar;

  envp: PPgchar;

  var stdin_data: TSpawnWriteData;

  var stdout_data: TGString;

  var stderr_data: TGString;

  var exit_status: gint;

  var error: PGError

):gboolean;