D2 is really that stable as it is claimed to be?

["Luís]

Walter, I'm sorry to hear your frustration on this issue of the 
error caret, and the lack of recognition you got for your dmc 
implementation of that concept.

For what it's worth the following is my opinion:

- I think I first met an error caret in the javac compiler, 
around 2000. I found it very nice and useful. My positive 
experience was not preceded by any "marketing" of that feature, 
so I think we can conclude that my enjoyment was genuine.

- When clang added nice error diagnostics in general (compared to 
GCC at the time) and the caret in particular that helped shape my 
perception of that compiler in a positive light, whatever the 
actual technical merits of that compiler may be.

- In general I think dmd is quite a good compiler but I regularly 
mumble to myself "hmm, the compiler could have provided better 
diagnostics for this error I committed". I can start compiling a 
list of those errors with less than great error messages, if 
that's useful.

- Based on my experience with javac and clang, providing a caret 
(and ranges around the offending expressions, as in clang) is 
very useful *to me*, and I would be very pleased to see them on 
the D compilers, even if that information was not present in the 
debugger, so as not to regress compiler performance.