## Copyright (C) 2003-2018 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
## <https://www.gnu.org/licenses/>.

## -*- texinfo -*-
## @deftypefn {} {} isstr (@var{a})
## This function has been deprecated.  Use ischar instead.
## @end deftypefn

## Author: jwe

## Deprecated in version 3.0
## Matlab still has this function, so don't remove just yet.

function retval = isstr (varargin)

  persistent warned = false;
  if (! warned)
    warned = true;
    warning ("Octave:deprecated-function",
             "isstr is obsolete and will be removed from a future version of Octave, please use ischar instead");
  endif

  retval = ischar (varargin{:});

endfunction
