Customizing the face for a specific semantic token

[itamarst]

Hi,

I'm trying to reproduce https://veykril.github.io/posts/semantic-unsafe/ in lsp-mode. TL;DR is in VSCode they set:

"editor.semanticTokenColorCustomizations": {
    "rules": {
        "*.unsafe:rust": "#eb5046"
    }
}

In lsp-mode, there's documentation for enabling semantic tokens, but none for customizing the faces. I've tried:

(setq lsp-enable-semantic-highlighting 't)
(setq lsp-semantic-tokens-enable 't)
(add-to-list 'lsp-semantic-token-faces '("unsafe" . rust-unsafe-face))

But that doesn't seem to work.

[ericdallo]

c/c @sebastiansturm

[alanz]

See also #3668, which needs a small update prior to landing

[flodiebold]

I think you need to set lsp-semantic-token-modifier-faces instead of lsp-semantic-token-faces. Haven't tested it recently though.