Fixes Regex to stop '.A' class from being added in escapeValue()

[kruggeri]

Current Behavior

When Optimal Select discovers a CSS attribute (i.e. class) with a line break in it, the regex replaces the line with an ".A" class name.

Our company stumbled on this instance when using a client's site which had the following odd class name:

class="threeColumn product
   lastColumn"

Optimal Select's regex stripped the line break but returned a CSS Selector with threeColumn.product.A.lastColumn

I believe the function's original intention was to remove space until the beginning of the string, using the \A regex boundary. But, as we discovered, it returns a literal '.A' class.

Why do we need this change?

To prevent incorrect CSS selectors.

Implementation Details

By using an empty string for the regex, we can select the correct element. The fix worked very well for us and we hope it could save others some trouble.