http://www.w3.org/TR/css-counter-styles-3/#at-counter-style
example 9's code in the pad example has an error or maybe old code in it, has width: 3 "0"; when it should probably have pad: 3 "0";

please document in this section also what happens if you use pad:0 "0"; or pad:0 " "; I should hope this zero or space-pads the digits to fit the largest amount of digits in the column (column width). perhaps the function below could assist in this.

also, regarding pad and anything that has to do with numbers and width, I cwould like to contribute an algorithm based on an equation I got from my professor years and years ago.


could this function also somehow be made available as a css function like calc()? for people doing line numbers, the width of the field is important, and it would be nice to auto-size it according to the amount of code. there are a lot of color syntax highlighters out there (and more in use too). should I make a separate feature request for this? it could simply be called numdigits. I would like to see it used with calc and attr().

/* js - this function works with integers, positive, negative, and 0, and tells you the number of digits required. */
function NumberOfDigits(n, base, countMinusSign) {
    //type checking
    if ('number'!=typeof(number)) {
        alert("NumberOfDigits() was fed type "+typeof(n)+" for n, should be Number");
        return 0;//failure
    }
    if ('number'!=typeof(base)) {
        alert("NumberOfDigits() was fed type "+typeof(base)+" for base, should be Number");
        return 0;//failure
    }
    if ('boolean'!=typeof(countMinusSign)) {
        alert("NumberOfDigits() was fed type "+typeof(countMinusSign)+" for countMinusSign, should be Boolean");
        return 0;//failure
    }
    //zero special case
    if (0 == number) {
        return 1;
    }
    //equation
    return Math.ceil(Math.log(Math.abs(number) + 1) / Math.log(base)) + 
           ((countMinusSign && (number < 0))?1:0);
}

this will determine the integer number of digits for a number, maybe it will be useful for speeding up calculation of number of digits in a number (without having to count all the digits and doing string conversion). from my web page at 
http://jesusnjim.com/programming/number-of-digits-in-a-number-for-any-given-base.html#floatingpoint