Re: [xslt] Why is an invalid stylesheet parameter value not an error?

[Stefan Behnel <stefan_ml behnel de>]

Vincent Lefevre wrote:
> On 2008-04-15 12:33:42 +0200, Stefan Behnel wrote:
>> What could be wrong in telling the user that he/she made a mistake
>> instead of hiding the problem that was discovered during XSLT
>> evaluation and that lead to an incorrect result?
> 
> How can a XSLT processor read in the user's mind?

Well, it stops processing, so it's actually the XSLT processor that decides
that something has happened that does not allow it to continue its work
correctly. But then, it returns the half-completed result to the user as if
nothing unusual happened.

Now, imagine the "user" is not a human being who knows how to read and
interpret text messages, but instead is a program that wants to know if the
result is the correct and complete result of the transformation, or if it
needs to do something special about it. I would like to know how to take
exactly this decision in a reasonably efficient way, without a major impact on
the error-free success case.

Stefan