Semantic Tokens - rust analyzer issues when toggle mode on/off

[danielpopescu]

Issue:

Open a rust file. Semantic tokens are initially highlighted. Run M-x eglot-semantic-tokens-mode to turn the mode off and run ithe same command to turn the mode back on. The code highlighting is very muted, almost gone.

This happens only with rust-analyzer. I also use clangd, pyright/ty and they work fine.

[joaotavora]

Ack. Have to test

[danielpopescu]

rust analyzer workspace config that I use:

            :rust-analyzer (
                            ;;:numThreads 12
                            :check (:command "clippy"
                                    :extraArgs ["--" "-Wclippy::pedantic" "-Wclippy::nursery"]
                                    :features "all"
                                    :allTargets :json-false
                                             )
                            :diagnostics (:experimental (:enable t)
                                                        :disabled ["unresolved-proc-macro"
                                                                   "unresolved-macro-call"]                                                                                                                                                )
                            :cargo (:buildScripts (:enable t)
                                                  :features "all"
                                                  :allTargets :json-false
                                                  )
                           ;;  :cachePriming (:enable :json-false)
                            ;;:cachePriming (:numThreads 12)
                            :procMacro (:attributes (:enable t)
                                                    :enable t)
                            :inlayHints (:typeHints (:enable t)
                                                    :parameterHints (:enable t) ; :json-false if disabled
                                                    )
                            )

[joaotavora]

Sorry, but I just can't reproduce this. And I'm trying with exactly your configuration. I'm trying the attached project

project.zip

After unzipping it, use this -Q invocation:

emacs -Q src/main.rs -f eglot

Toggling eglot-semantic-tokens-mode on and off works fine. Tested using a recent master emacs or the latest Eglot from GNU-devel elpa.