JDevlieghere added a comment.

Your argument is correct because the interactive script interpreter always 
belongs to a single debugger. That being said, I don't like this for a few 
reasons:

- LLDB supports multiple debuggers and the relationship between the script 
interpreter and the debugger are an implementation detail. This shouldn't be 
something the user has to think or know about.
- The convenience variables were introduced with a very specific goad and 
empirically only a small subset of the users actually understands their purpose 
and limitations. It's already relatively complex and adding an exception for 
the debugger only makes things harder to explain and understand.
- There's always a way to get the debugger in a non-interactive context (e.g. 
`__lldb_init_module` or from the current `frame`).

FWIW this has always been LLDB's behavior. You're probably seeing it now 
because the convenience variables are initialized to `None` (instead of default 
constructed) which results in a Python exception when you try to call a method 
on them. We got some reports of this internally and in most cases the 
convenience variables were misused and potential bug got fixed. There were a 
few innocent uses, such as in the `crashlog.py` script which I've since fixed.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D93926/new/

https://reviews.llvm.org/D93926

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