public function useTabCompletion()
    {
        return isset($this->useTabCompletion) ? ($this->hasReadline && $this->useTabCompletion) : $this->hasReadline;
    }
public function useTabCompletion()
    {
        return isset($this->useTabCompletion) ? ($this->hasReadline && $this->useTabCompletion) : $this->hasReadline;
    }
public function useTabCompletion ( ) { return isset ( $ this -> useTabCompletion ) ? ( $ this -> hasReadline && $ this -> useTabCompletion ) : $ this -> hasReadline ; }
Check whether to use tab completion.

If `setUseTabCompletion` has been set to true, but readline is not
actually available, this will return false.

@return bool True if the current Shell should use tab completion
Check whether to use tab completion .