self keyword not correctly specified / highlighted

How are you using the lua-language-server?

NeoVim

Which OS are you using?

Linux

What is the issue affecting?

Other

Expected Behaviour

The self word should be highlighted as a keyword and not a variable.

Actual Behaviour

The self keyword seems to be recognized as a variable and not a keyword. The self keyword is not correctly highlighted. It seems highlighted as a variable and not as a keyword.

Reproduction steps

Use neovim with lua_ls and open a lua file and a theme with the self keyword. The self keyword is not correctly highlighted.

Additional Notes

I first noticed the problem in neovim with the everforest theme. I even opened an issue. More context can be found in the author's detailed answer.

Log File

No response

首先，在 Neovim 中使用 lua_ls 针对一个 Lua 文件复现该报告，使用能够高亮 self 关键字的主题，并查看链接的 Everforest issue 以了解背景。完成的标准是：在所报告的设置中，self 被分类并显示为关键字，而不是变量。