Validate XPath expressions before or while building the stylesheet #2
Description
Problem
Currently, the processor stylesheet (make_xslt.xsl) converts whatever it finds in an <expression> element and converts it into a XSLT template. Ill-formed XPath expressions are only discovered on run-time and make the tokenization process fail as a whole.
Solution
The processor should check the syntactic integrity of each expression and omit invalid ones with a warning.