How to configure cpp syntax highlighting with tree-sitter mode?

[yangchaoFree]

I have configured syntax highlighting in config. json:
..
"cpp": {
"extensions": [
"cpp",
"cc",
"cxx",
"hpp",
"hh",
"hxx"
],
"filenames": [],
"grammar": "cpp",
"comment_prefix": "//",
"auto_indent": true,
"highlighter": "tree-sitter",
"textmate_grammar": null,
"show_whitespace_tabs": true,
"use_tabs": false
},
..

But after tracking the code, it was found that the syntax highlighting was actually using HighlighterPreference:: TextMate:
During the initialization process, call stack:
for_file_with_languages()
->for_file_with_languages_and_preference()
->.. Self::textmate_for_file_with_languages(path, registry, languages) //set texmate mode

From the source code, it can be seen that the fixed setting is textmate mode:

pub fn for_file_with_languages(
path: &Path,
registry: &GrammarRegistry,
languages: &std::collections::HashMap<String, crate::config::LanguageConfig>,
) -> Self {
Self::for_file_with_languages_and_preference(
path,
registry,
languages,
HighlighterPreference::Auto, **// set Auto mode; **
)
}
pub fn for_file_with_languages_and_preference(
path: &Path,
registry: &GrammarRegistry,
languages: &std::collections::HashMap<String, crate::config::LanguageConfig>,
preference: HighlighterPreference,
) -> Self {
match preference {
// Auto now defaults to TextMate for highlighting (syntect has broader coverage)
// but still detects tree-sitter language for indentation/semantic features
HighlighterPreference::Auto | HighlighterPreference::TextMate => {
Self::textmate_for_file_with_languages(path, registry, languages) // will go to here
}
HighlighterPreference::TreeSitter => {
if let Some(lang) = Language::from_path(path) {
if let Ok(highlighter) = Highlighter::new(lang) {
return Self::TreeSitter(Box::new(highlighter));
}
}
Self::None
}
}
}