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+## Copyright (C) 2014-2015 John W. Eaton
+##
+## 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  {Built-in Function} {@var{fname} =} octave_tmp_file_name ()
+## @deftypefnx {Built-in Function} {@var{fname} =} octave_tmp_file_name (@var{dir})
+## @deftypefnx {Built-in Function} {@var{fname} =} octave_tmp_file_name (@var{dir}, @var{prefix})
+##
+## @code{octave_tmp_file_name} is deprecated and will be removed in Octave
+## version 4.4.  Use @code{tempname} for equivalent functionality.
+##
+## Return a unique temporary file name as a string.
+##
+## If @var{prefix} is omitted, a value of @qcode{"oct-"} is used.
+## If @var{dir} is also omitted, the default directory for temporary files
+## (@code{P_tmpdir} is used.  If @var{dir} is provided, it must exist,
+## otherwise the default directory for temporary files is used.
+## @seealso{tempname, tmpnam, mkstemp, tempdir, P_tmpdir, tmpfile}
+## @end deftypefn
+
+## Deprecated in version 4.0
+
+function filename = octave_tmp_file_name (varargin)
+
+  persistent warned = false;
+  if (! warned)
+    warned = true;
+    warning ("Octave:deprecated-function",
+             "octave_tmp_file_name is obsolete and will be removed from a future version of Octave, please use tempname instead");
+  endif
+
+  filename = tmpnam (varargin{:});
+
+endfunction
+
+
+%!assert (1)
+