## Copyright (C) 2009 John W. Eaton
##
## This program 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.
##
## This program 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 this program; see the file COPYING.  If not, see
## <http://www.gnu.org/licenses/>.

## -*- texinfo -*-
## @deffn {Command} which name @dots{}
## Display the type of each @var{name}.  If @var{name} is defined from a
## function file, the full name of the file is also displayed.
## @seealso{help, lookfor}
## @end deffn

## PKG_ADD: mark_as_command which

function varargout = which (varargin)

  if (nargin > 0 && iscellstr (varargin))
    m = __which__ (varargin{:});

    if (nargout == 0)
      for i = 1:nargin
	if (isempty (m(i).file))
	  if (! isempty (m(i).type))
	    printf ("`%s' is a %s function\n",
		    m(i).name, m(i).type);
	  endif
	else
	  if (isempty (m(i).type))
	    printf ("`%s' is the file %s\n",
		    m(i).name, m(i).file);
	  else
	    printf ("`%s' is a %s from the file %s\n",
		    m(i).name, m(i).type, m(i).file);
	  endif
	endif
      endfor
    else
      varargout = {m.file};
    endif
  else
    print_usage ();
  endif

endfunction