## Copyright (C) 2005-2013 David Bateman
##
## This file is part of Octave.
##
## Octave is free software; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 3 of the License, or (at
## your option) any later version.
##
## Octave is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Octave; see the file COPYING.  If not, see
## <http://www.gnu.org/licenses/>.

## -*- texinfo -*-
## @deftypefn {Function File} {} __prog_output_assert__ (@var{str})
## Undocumented internal function.
## @end deftypefn

function ret = __prog_output_assert__ (str)
  global _assert_printf;
  if (isempty (_assert_printf))
    ret = isempty (str);
  elseif (_assert_printf(end) == "\n")
    ret = strcmp (_assert_printf(1:(end-1)), str);
  else
    ret = strcmp (_assert_printf, str);
  endif
  _assert_printf = "";
endfunction