Report all syntax errors at once

[csokol]

Instead of stopping tubaina on the first syntax error, it would be nice if tubaina report all errors from all afc's at once.

[ceci]

Can we report the first error for each chapter, instead of all of them? The problem is that, after the first occurence, we won't be able to tell if the following errors are side-effects or real errors.

It's the same problem JUnit tests handle -- and the same suggested solution.