[clang] [clang-tools-extra] [clangd] Add InsertReplaceEdit for code completion (PR #187623)

[via cfe-commits]

timon-ul wrote:

> Ah, worth mentioning: if you want to test it locally, vscode-clangd extension has a bug which crashes the autocompletion in the replace mode unless you set "clangd.serverCompletionRanking": false.

Sorry I am still a bit confused, I did not enable the replace mode, so it should per default not crash no? I will have a look later to double check but I am pretty sure I did not enable it, unless it is on per default?

https://github.com/llvm/llvm-project/pull/187623