[clang] [clang-tools-extra] [CodeCompletion] Consider header files without extension, if... (PR #166447)

[Björn Schäpers via cfe-commits]

HazardyKnusperkeks wrote:

Would this be the right ReleseNotes?
And do you know, who I should ask for review from clangd?

https://github.com/llvm/llvm-project/pull/166447