Support for customizing exception breakpoints in debugger

Today the debugger supports breaking into specific exceptions by listing the exceptions in the launch.json file. Now that PTVSD supports the protocol, Its a good time to visit how these custom exception breakpoints can be passed into PTVSD, here’s are the two solutions:

Option 1: Note: We’d need to add lot more exceptions into the list, Option 2: Go with the launch.json approach (configure exceptions in the launch.json as done today - no GUI).

here’s option 1:

@MikhailArkhipov @brettcannon @qubitron cc

[lovettchris]

The most useful thing is to be able to “turn off break on exception” on a specific exception that is happening too often, like “GeneratorExit” exceptions that happen in swig wrappers. So I don’t really care about the full list of all possible exceptions, rather the inverse, which is the much smaller list of exceptions that I don’t care about.

[sytelus]

This is critical feature ask for Python given that language requires exceptions for various core features, unfortunately. Unless there is an ability to disable break on StopIteration and GeneratorExit, integrated debugging becomes useless on more difficult bugs. Hope this gets in soon!