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Detect filetype from shebang line (#1001)
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@ -33,10 +33,11 @@ ## languages.toml
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| scope | A string like `source.js` that identifies the language. Currently, we strive to match the scope names used by popular TextMate grammars and by the Linguist library. Usually `source.<name>` or `text.<name>` in case of markup languages |
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| injection-regex | regex pattern that will be tested against a language name in order to determine whether this language should be used for a potential [language injection][treesitter-language-injection] site. |
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| file-types | The filetypes of the language, for example `["yml", "yaml"]` |
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| shebangs | The interpreters from the shebang line, for example `["sh", "bash"]` |
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| roots | A set of marker files to look for when trying to find the workspace root. For example `Cargo.lock`, `yarn.lock` |
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| auto-format | Whether to autoformat this language when saving |
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| comment-token | The token to use as a comment-token |
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| indent | The indent to use. Has sub keys `tab-width` and `unit` |
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| indent | The indent to use. Has sub keys `tab-width` and `unit` |
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| config | Language server configuration |
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## Queries
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@ -450,6 +450,7 @@ pub fn change<I>(document: &Document, changes: I) -> Self
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language: vec![LanguageConfiguration {
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scope: "source.rust".to_string(),
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file_types: vec!["rs".to_string()],
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shebangs: vec![],
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language_id: "Rust".to_string(),
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highlight_config: OnceCell::new(),
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config: None,
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@ -14,6 +14,8 @@
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cell::RefCell,
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collections::{HashMap, HashSet},
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fmt,
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fs::File,
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io::Read,
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path::Path,
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sync::Arc,
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};
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@ -52,6 +54,7 @@ pub struct LanguageConfiguration {
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pub language_id: String,
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pub scope: String, // source.rust
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pub file_types: Vec<String>, // filename ends_with? <Gemfile, rb, etc>
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pub shebangs: Vec<String>, // interpreter(s) associated with language
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pub roots: Vec<String>, // these indicate project roots <.git, Cargo.toml>
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pub comment_token: Option<String>,
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@ -254,6 +257,7 @@ pub struct Loader {
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// highlight_names ?
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language_configs: Vec<Arc<LanguageConfiguration>>,
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language_config_ids_by_file_type: HashMap<String, usize>, // Vec<usize>
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language_config_ids_by_shebang: HashMap<String, usize>,
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}
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impl Loader {
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@ -261,6 +265,7 @@ pub fn new(config: Configuration) -> Self {
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let mut loader = Self {
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language_configs: Vec::new(),
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language_config_ids_by_file_type: HashMap::new(),
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language_config_ids_by_shebang: HashMap::new(),
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};
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for config in config.language {
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@ -273,6 +278,11 @@ pub fn new(config: Configuration) -> Self {
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.language_config_ids_by_file_type
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.insert(file_type.clone(), language_id);
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}
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for shebang in &config.shebangs {
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loader
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.language_config_ids_by_shebang
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.insert(shebang.clone(), language_id);
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}
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loader.language_configs.push(Arc::new(config));
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}
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@ -298,6 +308,20 @@ pub fn language_config_for_file_name(&self, path: &Path) -> Option<Arc<LanguageC
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// TODO: content_regex handling conflict resolution
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}
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pub fn language_config_for_shebang(&self, path: &Path) -> Option<Arc<LanguageConfiguration>> {
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// Read the first 128 bytes of the file. If its a shebang line, try to find the language
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let file = File::open(path).ok()?;
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let mut buf = String::with_capacity(128);
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file.take(128).read_to_string(&mut buf).ok()?;
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static SHEBANG_REGEX: Lazy<Regex> =
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Lazy::new(|| Regex::new(r"^#!\s*(?:\S*[/\\](?:env\s+)?)?([^\s\.\d]+)").unwrap());
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let configuration_id = SHEBANG_REGEX
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.captures(&buf)
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.and_then(|cap| self.language_config_ids_by_shebang.get(&cap[1]));
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configuration_id.and_then(|&id| self.language_configs.get(id).cloned())
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}
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pub fn language_config_for_scope(&self, scope: &str) -> Option<Arc<LanguageConfiguration>> {
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self.language_configs
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.iter()
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@ -494,7 +494,9 @@ fn save_impl<F: Future<Output = LspFormatting>>(
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/// Detect the programming language based on the file type.
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pub fn detect_language(&mut self, theme: Option<&Theme>, config_loader: &syntax::Loader) {
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if let Some(path) = &self.path {
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let language_config = config_loader.language_config_for_file_name(path);
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let language_config = config_loader
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.language_config_for_file_name(path)
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.or_else(|| config_loader.language_config_for_shebang(path));
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self.set_language(theme, language_config);
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}
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}
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@ -3,6 +3,7 @@ name = "rust"
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scope = "source.rust"
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injection-regex = "rust"
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file-types = ["rs"]
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shebangs = []
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roots = []
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auto-format = true
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comment-token = "//"
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@ -17,6 +18,7 @@ name = "toml"
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scope = "source.toml"
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injection-regex = "toml"
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file-types = ["toml"]
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shebangs = []
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roots = []
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comment-token = "#"
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@ -27,6 +29,7 @@ name = "protobuf"
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scope = "source.proto"
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injection-regex = "protobuf"
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file-types = ["proto"]
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shebangs = []
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roots = []
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comment-token = "//"
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@ -37,6 +40,7 @@ name = "elixir"
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scope = "source.elixir"
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injection-regex = "elixir"
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file-types = ["ex", "exs"]
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shebangs = []
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roots = []
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comment-token = "#"
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@ -48,6 +52,7 @@ name = "mint"
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scope = "source.mint"
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injection-regex = "mint"
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file-types = ["mint"]
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shebangs = []
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roots = []
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comment-token = "//"
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@ -59,6 +64,7 @@ name = "json"
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scope = "source.json"
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injection-regex = "json"
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file-types = ["json"]
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shebangs = []
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roots = []
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indent = { tab-width = 2, unit = " " }
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@ -68,6 +74,7 @@ name = "c"
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scope = "source.c"
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injection-regex = "c"
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file-types = ["c"] # TODO: ["h"]
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shebangs = []
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roots = []
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comment-token = "//"
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@ -79,6 +86,7 @@ name = "cpp"
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scope = "source.cpp"
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injection-regex = "cpp"
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file-types = ["cc", "hh", "cpp", "hpp", "h", "ipp", "tpp", "cxx", "hxx", "ixx", "txx", "ino"]
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shebangs = []
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roots = []
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comment-token = "//"
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@ -90,6 +98,7 @@ name = "c-sharp"
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scope = "source.csharp"
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injection-regex = "c-?sharp"
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file-types = ["cs"]
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shebangs = []
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roots = []
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comment-token = "//"
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@ -100,6 +109,7 @@ name = "go"
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scope = "source.go"
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injection-regex = "go"
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file-types = ["go"]
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shebangs = []
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roots = ["Gopkg.toml", "go.mod"]
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auto-format = true
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comment-token = "//"
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@ -113,6 +123,7 @@ name = "javascript"
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scope = "source.js"
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injection-regex = "^(js|javascript)$"
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file-types = ["js", "mjs"]
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shebangs = []
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roots = []
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comment-token = "//"
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# TODO: highlights-jsx, highlights-params
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@ -124,6 +135,7 @@ name = "typescript"
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scope = "source.ts"
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injection-regex = "^(ts|typescript)$"
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file-types = ["ts"]
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shebangs = []
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roots = []
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# TODO: highlights-jsx, highlights-params
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@ -135,6 +147,7 @@ name = "tsx"
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scope = "source.tsx"
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injection-regex = "^(tsx)$" # |typescript
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file-types = ["tsx"]
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shebangs = []
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roots = []
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# TODO: highlights-jsx, highlights-params
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@ -146,6 +159,7 @@ name = "css"
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scope = "source.css"
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injection-regex = "css"
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file-types = ["css"]
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shebangs = []
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roots = []
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indent = { tab-width = 2, unit = " " }
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@ -155,6 +169,7 @@ name = "html"
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scope = "text.html.basic"
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injection-regex = "html"
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file-types = ["html"]
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shebangs = []
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roots = []
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indent = { tab-width = 2, unit = " " }
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@ -164,6 +179,7 @@ name = "python"
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scope = "source.python"
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injection-regex = "python"
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file-types = ["py"]
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shebangs = ["python"]
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roots = []
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comment-token = "#"
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@ -176,6 +192,7 @@ name = "nix"
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scope = "source.nix"
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injection-regex = "nix"
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file-types = ["nix"]
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shebangs = []
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roots = []
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comment-token = "#"
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@ -187,6 +204,7 @@ name = "ruby"
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scope = "source.ruby"
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injection-regex = "ruby"
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file-types = ["rb"]
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shebangs = ["ruby"]
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roots = []
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comment-token = "#"
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@ -198,6 +216,7 @@ name = "bash"
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scope = "source.bash"
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injection-regex = "bash"
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file-types = ["sh", "bash"]
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shebangs = ["sh", "bash", "dash"]
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roots = []
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comment-token = "#"
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@ -209,6 +228,7 @@ name = "php"
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scope = "source.php"
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injection-regex = "php"
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file-types = ["php"]
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shebangs = ["php"]
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roots = []
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indent = { tab-width = 4, unit = " " }
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@ -218,6 +238,7 @@ name = "latex"
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scope = "source.tex"
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injection-regex = "tex"
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file-types = ["tex"]
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shebangs = []
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roots = []
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comment-token = "%"
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@ -228,6 +249,7 @@ name = "julia"
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scope = "source.julia"
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injection-regex = "julia"
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file-types = ["jl"]
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shebangs = []
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roots = []
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comment-token = "#"
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language-server = { command = "julia", args = [
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@ -253,6 +275,7 @@ name = "java"
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scope = "source.java"
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injection-regex = "java"
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file-types = ["java"]
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shebangs = []
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roots = []
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indent = { tab-width = 4, unit = " " }
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@ -261,6 +284,7 @@ name = "ledger"
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scope = "source.ledger"
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injection-regex = "ledger"
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file-types = ["ldg", "ledger", "journal"]
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shebangs = []
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roots = []
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comment-token = ";"
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indent = { tab-width = 4, unit = " " }
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@ -270,6 +294,7 @@ name = "ocaml"
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scope = "source.ocaml"
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injection-regex = "ocaml"
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file-types = ["ml"]
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shebangs = []
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roots = []
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comment-token = "(**)"
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indent = { tab-width = 2, unit = " " }
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@ -278,6 +303,7 @@ indent = { tab-width = 2, unit = " " }
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name = "ocaml-interface"
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scope = "source.ocaml.interface"
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file-types = ["mli"]
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shebangs = []
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roots = []
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comment-token = "(**)"
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indent = { tab-width = 2, unit = " "}
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@ -286,6 +312,7 @@ indent = { tab-width = 2, unit = " "}
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name = "lua"
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scope = "source.lua"
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file-types = ["lua"]
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shebangs = []
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roots = []
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comment-token = "--"
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indent = { tab-width = 2, unit = " " }
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@ -295,6 +322,7 @@ name = "svelte"
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scope = "source.svelte"
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injection-regex = "svelte"
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file-types = ["svelte"]
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shebangs = []
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roots = []
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indent = { tab-width = 2, unit = " " }
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language-server = { command = "svelteserver", args = ["--stdio"] }
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@ -305,6 +333,7 @@ name = "vue"
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scope = "source.vue"
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injection-regex = "vue"
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file-types = ["vue"]
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shebangs = []
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roots = []
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indent = { tab-width = 2, unit = " " }
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@ -312,6 +341,7 @@ indent = { tab-width = 2, unit = " " }
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name = "yaml"
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scope = "source.yaml"
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file-types = ["yml", "yaml"]
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shebangs = []
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roots = []
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comment-token = "#"
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indent = { tab-width = 2, unit = " " }
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@ -331,6 +361,7 @@ name = "zig"
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scope = "source.zig"
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injection-regex = "zig"
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file-types = ["zig"]
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shebangs = []
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roots = ["build.zig"]
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auto-format = true
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comment-token = "//"
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@ -343,6 +374,7 @@ name = "prolog"
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scope = "source.prolog"
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roots = []
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file-types = ["pl", "prolog"]
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shebangs = ["swipl"]
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comment-token = "%"
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language-server = { command = "swipl", args = [
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@ -354,6 +386,7 @@ language-server = { command = "swipl", args = [
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name = "tsq"
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scope = "source.tsq"
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file-types = ["scm"]
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shebangs = []
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roots = []
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comment-token = ";"
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indent = { tab-width = 2, unit = " " }
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@ -362,6 +395,7 @@ indent = { tab-width = 2, unit = " " }
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name = "cmake"
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scope = "source.cmake"
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file-types = ["cmake", "CMakeLists.txt"]
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shebangs = []
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roots = []
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comment-token = "#"
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indent = { tab-width = 2, unit = " " }
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@ -371,6 +405,7 @@ language-server = { command = "cmake-language-server" }
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name = "perl"
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scope = "source.perl"
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file-types = ["pl", "pm"]
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shebangs = ["perl"]
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roots = []
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comment-token = "#"
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indent = { tab-width = 2, unit = " " }
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