[PATCH] D54077: [clangd] Implemented DraftFileSystem

[Sam McCall via Phabricator via cfe-commits]

sammccall added a comment.

Someone mentioned to me that the interaction-between-features argument wasn't clear here:

- we **don't** currently update diagnostics for `A.cc` when `A.h` is edited
- we should, this seems more obvious & important than what we do with drafts
- this interacts badly with using draft state, as this patch proposes - there are too many edits


Repository:
  rCTE Clang Tools Extra

https://reviews.llvm.org/D54077