2) Not all of the characters in the regular expressions were converted into X/HTML character entities correctly.

3) You have some “curly” quotes in there which will probably cause problems.

4) The statement in the trim function can be simplified to this:
return this.replace(/^\s*|\s*$/g,”);
(In case the backslashes are messed up here too, there should be one backslash preceding each of the two “s” characters.)

I missed that WordPress drops the backslashes. This messed up most of the expressions in this article. I went ahead and replaced them with HTMLEntities and I believe all the expressions are correct now.

/**
* Trim leading spaces
*/
ltrim: function(s) { return s.replace(/\\s*((\\S+\\s*)*)/, ‘$1′); },

/**
* Trim leading spaces
*/
ltrim: function(s) { return s.replace(/\s*((\S+\s*)*)/, ‘$1′); },

/**
chop a string into segments of ‘n’ chars
*/
chop: function(str, len, glue) {
var out = [];
len = ((len === undefined || isNaN(len)) ? str.length : parseInt(len));
while (str != ”)
{
if (str.length > len)
{
var tmp = String(str).substr(0, len);
var x = tmp.lastIndexOf(’ ‘);
if (x > 0)
{
out.push(this.trim(tmp.substr(0, x)));
str = this.trim(str.substr(x + 1));
}
else
{
out.push(tmp.substr(0, len));
str = str.substr(len + 1);
}
}
else
{
out.push(str);
str = ”;
}
}
return ((glue === undefined) ? out : out.join(glue));
},