Is here some way to let ccls server support C++20

[PeterlitsZo]

I find someway in Google but not get useful answer. Thanks a lot. lol.

I want to just edit the :CocConfig if it can. Here is my :CocConfig:

{
    "languageserver": {
        "ccls": {
            "command": "ccls",
            "filetypes": [
                "c",
                "cpp",
                "objc",
                "objcpp"
            ],
            "rootPatterns": [
                ".ccls",
                "compile_commands.json",
                ".vim/",
                ".git/",
                ".hg/"
            ],
            "initializationOptions": {
                "cache": {
                    "directory": "/tmp/ccls"
                }
            },
            "clang.extraArgs": ["-std=c++20"]
        }
    },
    "prettier": {
        "tabWidth": 4
    }
}

But it do not work for me...

[kvreinzapp]

add .ccls file in the root path of my project works for me.
add these lines in .ccls file:

clang++
%h %cpp -std=c++20

(https://github.com/MaskRay/ccls/wiki/Project-Setup#ccls-file)
(MaskRay/ccls#802)
(https://codevion.github.io/index.html#!vim/coc.md)

[fannheyward]

"clang.extraArgs": ["-std=c++20"]

You're using ccls, but set args for clangd, they're not same thing.