[clang] [clang][Diagnostics] Highlight code snippets (PR #66514)

[Timm Baeder via cfe-commits]

Timm =?utf-8?q?Bäder?= <tbaeder at redhat.com>
Message-ID:
In-Reply-To: <llvm/llvm-project/pull/66514/clang at github.com>


tbaederr wrote:

![Screenshot from 2023-09-20 15-36-55](https://github.com/llvm/llvm-project/assets/49720664/fae01c5d-5d36-4be0-905e-54d860017ce0)

We might also have to tweak the colors. I'm just not sure if the predefined ones from `llvm::raw_ostream` are enough.

https://github.com/llvm/llvm-project/pull/66514