Simple string values.
In XPath terms a Literal is what we know as a string.
Create a new Literal object with the value in $string. Note that " and ' will be converted to " and ' respectively. That is not part of the XPath specification, but I consider it useful. Note though that you have to go to extraordinary lengths in an \s-1XML\s0 template file (be it \s-1XSLT\s0 or whatever) to make use of this:
<xsl:value-of select=""I'm feeling "sad"""/>
Which produces a Literal of:
I'm feeling "sad"
Also overloaded as stringification, simply returns the literal string value.
Returns the equivalent of perl's cmp operator against the given $literal.