[Lldb-commits] [lldb] [lldb] Add test to document alias tab completion behaviour (PR #65760)

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jimingham wrote:

Just to make sure there's no confusion...  The reason that `b` completes to `__regex_break` is that we always prefer exact matches in completion.  Since we did:

`command alias b __regex_break
`

then `b<TAB>` should only complete to the `b` alias.  That makes sense, since executing `b` will run the `__regex_break` alias.

Maybe this was already clear, but it sounded from David's original comment that `b` selecting the `__regex_break` alias was because aliases & built-in commands are being treated differently, but in fact that one should still be unambiguous because exact matches always win.

https://github.com/llvm/llvm-project/pull/65760