You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: tor_fill_steplot.m
    path of file: ./repos/CanlabCore/CanlabCore/Visualization_functions
    
    the code of the file until where you have to start completion: function [h,t,dat,d,m1,m2,sterr] = tor_fill_steplot(dat,color,varargin)

    
function [h,t,dat,d,m1,m2,sterr] = tor_fill_steplot(dat,color,varargin)
% :Usage:
% ::
%
%    [h,t] = tor_fill_steplot(dat,color,[robust flag],[p-thresh],[x vector],[covs no interest])
%
% Plots a mean vector (mean of each column of dat)
% surrounded by a fill with standard err bars
%
% If dat has 3 dimensions, then
% the diff between dat(:,:,1) and dat(:,:,2) is
% used as the difference for computing standard err
% (as in repeated measures)
%
% if behavior is entered as optional argument, removes it before plotting
% lines.  Also returns adjusted output in d, dat
% 
% Optional: robust flag (1/0), robust IRLS
%
% :Examples:
% ::
%
%    tor_fig;
%    tor_fill_steplot(dat,{'b' 'r'},0,.05,secs);

dorobust = 0; pthresh = 0; x = 1:size(dat,2);
t = []; m1 = []; m2 = []; X = [];

if length(varargin) > 0, dorobust = varargin{1};,end