Markus, there really isn't much that can go wrong with running re2c. It's quite a...
+1 Looks good.
I vote for making it an error (or at least invalid according to the re2c grammar)....
Here's my 2 cents: To me the main priorities of re2c are: 1. Speed 2. Backward compatibility...
c++ iterators (anything besides an input iterator) provide the abstraction you need,...