XpathElementSpecification cannot match text containing single quotes

[crafds1234]

E.g. this spec fails

anElement().withText("Some text with 'ABC' quoted with single quotes")

with this error:

InvalidSelectorError: Unable to locate an element with the xpath expression //*[text() = 'Some text with 'ABC' quoted with single quotes'] because of the following error:
SyntaxError: The expression is not a legal expression.

On inspection of com.lmax.elementspec.XPathElementSpecification#withText :

appendCondition("text() = '" + text + "'")

The code could detect single/double quotes and use the 'other' quote to quote the string for the test.

The XPath Recommendation (http://www.w3.org/TR/xpath) states:

 Literal ::=   '"' [^"]* '"' 
            | "'" [^']* "'"

So it is impossible to test a single string that contains both types of quotes without complex construction of the test string by concat-ing litertals; e.g.:

*[@text = concat('"', "'")]