Changelog #19

New Features

• BREAKING #3824 changed the name of many options. The current set is specified here . If you are using a non-VS Code client, note that rust-analyzer now asks for rust-analyzer secion of configuration, and expects this config to be present in initializationOptions .

• #3804 , #3825 it is now possible to use arbitrary command for on the fly error checking:

  {
      "rust-analyzer.checkOnSave.overrideCommand": [
          "./x.py", "check", "--json-output"
      ]
  }

• #3807 , #3825 similarly, it is now possible to completely override rustfmt command.

• #3820 remove support for old syntax highlighting. To use the new semantic tokens highlighting:

  1. install the recent vscode insiders build

  2. add

     {
         "rust-analyzer.highlighting.semanticTokens": true,
         "editor.semanticHighlighting.enabled": false,
     }

     to config

  3. run vscode as code-insiders --enabled-proposed-api matklad.rust-analyzer

  4. make sure to use a color theme with support for syntax highlighitng.

  5. Rust specific tokens and modifiers are listed here . For example, to underline all mut and &mut variables, add this to settings.json :

     "editor.tokenColorCustomizationsExperimental": {
         "*.mutable": {
             "fontStyle": "underline"
         }
     }

• #3814 add Implement From for enum variant assist

  

• #3746 add Create function assist.

  

• #3840 automatically add call parenthesis for tuple-like enum variants

  

• #3666 handle some configuration changes without server restart.

• #3777 populate default task list in VS Code with cargo commands.

• #3765 SSR no longer takes field order into account.

• #3829 SSR treats method call and UFCS equivalently.

• #3779 code completion for recrod literals now suggest only fields which are not already present.