## Copyright (C) 1996, 1998 Auburn University.  All Rights Reserved.
##
## 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 2, 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, write to the Free 
## Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. 

## -*- texinfo -*- 
## @deftypefn {Function File } { } outlist (@var{lmat}@{, @var{tabchar}, @var{yd}, @var{ilist} @})
##  Prints an enumerated list of strings.
##  internal use only; minimal argument checking performed
## 
## @strong{Inputs}
## @table @var
## @item 	lmat
##  list of strings
## @item 	tabchar
##  tab character (default: none)
## @item   yd
##  indices of strings to append with the string "(discrete)"
##            (used by @var{sysout}; minimal checking of this argument)
## 	   @math{yd = [] } indicates all outputs are continuous
## @item ilist
## index numbers to print with names.  
## 
## default: @code{1:rows(lmat)}
## @end table
## 
## @strong{Outputs}
##    prints the list to the screen, numbering each string in order.
## 
## @end deftypefn

function str_val = outlist(name_list,tabchar,yd,ilist)

  ## A. S. Hodel Dec. 1995, 1998

  ## save for restore later
  save_empty = empty_list_elements_ok;
  empty_list_elements_ok = 1;

  if( nargin < 1 | nargin > 4 )
    usage("str_val = outlist(x[,tabchar,yd,ilist])");
  endif

  m = length(name_list);
  if(nargin < 4)           ilist = 1:m;          endif
  if(nargin ==1)
    empty_list_elements_ok = 1;
    tabchar = "";
  endif

  if(nargin < 3)             yd = zeros(1,m);
  elseif(isempty(yd))        yd = zeros(1,m);          endif

  str_val = "";
  dstr = list(""," (discrete)");
  if((m >= 1) && (is_list(name_list)))
    for ii=1:m
      str_val = sprintf("%s%s%d: %s%s\n",str_val,tabchar, ilist(ii), ...
	  nth(name_list,ii),nth(dstr,yd(ii)+1));
    endfor
  else
    str_val = sprintf("%sNone",tabchar);
  endif

  empty_list_elements_ok = save_empty;

endfunction