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Improve parsing diagnostic for negative supertrait bounds #57364
Click to expand the log.
I have pushed a WIP flow for review.
Firstly, I have renamed the supertraits in tests to make talking about them easier.
On to the parser, to pass the colon span into the loop, I have added a
Next, I have implemented your
The output looks superb.
I think that we can iterate on the changes to
You can see how I handled a similar suggestion case in 28ea03e, but that one was more self contained.