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: textscanu.m
    path of file: ./repos/erplab/functions
    
    the code of the file until where you have to start completion: function C = textscanu(filename, encoding, del_sym, eol_sym, wb)

% C = textscanu(filename, encoding) reads Unicode 
% strings from a file and outputs a cell array of strings. 
% 
% Syntax:
% -------
% filename - string with the file's name and extension
%                 example: 'unicode.txt'
% encoding - encoding of the file
%                 default: UTF-16LE
%                 examples: UTF16-LE (little Endian), UTF8.
%                 See http://www.iana.org/assignments/character-sets
%                 MS Notepad saves in UTF-16LE ('Unicode'), 
%                 UTF-16BE ('Unicode big endian'), UTF-8 and ANSI.
% del_sym - column delimitator symbol in ASCII numeric code
%                 default: 9 (tabulator)
% eol_sym - end of line delimitator symbol in ASCII numeric code
%                 default: 13 (carriage return) [Note: line feed=10]
% wb          - displays a waitbar if wb = 'waitbar'
% 
% Example:
% -------
    
function doesn't seem to handle 
% properly multiscript Unicode files. Characters 
% outside the ASCII range are given the \u001a or 
% ASCII 26 value, which usually renders on the 
% screen as a box.
% 
% Additional information at "Loren on the Art of Matlab":
% http://blogs.mathworks.com/loren/2006/09/20/
% working-with-low-level-file-io-and-encodings/#comment-26764
% 
% Bug:
% -------
% When inspecting the output with the Array Editor, 
% in the Workspace or through the Command Window,
% boxes might appear instead of Unicode characters.
% Type C{1,1} at the prompt: you will see the correct
% string. Also: in Array Editor click on C then C{1,1}.
% 
% Matlab version: starting with R2006b
%
% Revisions:
% -------
% 2009.06.13 - added option to display a waitbar
% 2008.02.27 - function creation
% 
% Created by: Vlad Atanasiu / atanasiu@alum.mit.edu
% Copyright (c) 2009, Vlad Atanasiu
% All rights reserved.

switch nargin
    case 5
        if strcmp(wb, 'waitbar') == 1;
            h = waitbar(0,''); % display waitbar
        end