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[durianwaffle]

Hi Langium team, I suddenly see this error when I type Chinese punctuation mark which is in Unico and is not valid in our grammar. Our grammar only allows unicode in strings.
May I know where can I delete this message?

[msujew]

Hey @durianwaffle,

that's a VS Code feature, and unrelated to Langium. See also this stackoverflow thread which explains how to disable the message.

[durianwaffle]

Thank you so much for the help @msujew!

[durianwaffle]

Thanks a lot again.

For the issue above I found the resolution.
When user typed any character not between U+0020 and U+007E, it will show ambiguous character error: vscode/src/vs/editor/contrib/unicodeHighlighter.ts
To disable this error message, we can set ambiguousCharacters: false in editorOptions. I am using monaco-editor-wrapper from TypeFox/monaco-languageclient by the way

wrapperConfig: {
    editorAppConfig: {
      editorOptions: {
          unicodeHighlight: {
              ambiguousCharacters: false,
      },
    },
  }
}