feature request - point to xpath expression that is incorrect

in the log I see 

+----------------------------------------------------------------------------------------------------------------------+
|An Error has Occurred                                                                                                 |
|----------------------------------------------------------------------------------------------------------------------|
|XPath syntax error at char 176 in {...xs:dayTimeDuration('P1D'))[...}:                                                |
|    Unexpected token ")" beyond end of expressi                                                                       |
|on                                                

Is it possible to display e.g. line number of the form definition or full xpath expression? 

It's really difficult to find an exact expression that rises error. Especially when you have dozens of similar, complex expressions and you see that in one of them you have an extra bracket :)

//Jarek