function [a, b] = df_strjust(a, b)
%# small auxiliary function: make two char arrays the same width
%% Copyright (C) 2009-2010 Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
%% 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
%% 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 02111-1307, USA.
%# $Id: df_strjust.m 852 2010-07-22 10:47:55Z dupuis $
indi = size(a, 2) - size(b, 2);
if indi < 0
a = horzcat(repmat(' ', size(a, 1), -indi), a);
elseif indi > 0,
b = horzcat(repmat(' ', size(b, 1), indi), b);