Add support for the BibTeX file format (#5064)

book/src/generated/lang-support.md

@@ -5,6 +5,7 @@
 | bash | ✓ |  |  | `bash-language-server` |
 | bass | ✓ |  |  | `bass` |
 | beancount | ✓ |  |  |  |
+| bibtex | ✓ |  |  | `texlab` |
 | bicep | ✓ |  |  | `bicep-langserver` |
 | c | ✓ | ✓ | ✓ | `clangd` |
 | c-sharp | ✓ | ✓ |  | `OmniSharp` |

languages.toml

@@ -576,6 +576,34 @@ indent = { tab-width = 4, unit = "\t" }
 name = "latex"
 source = { git = "https://github.com/latex-lsp/tree-sitter-latex", rev = "8c75e93cd08ccb7ce1ccab22c1fbd6360e3bcea6" }
 
+[[language]]
+name = "bibtex"
+scope = "source.bib"
+injection-regex = "bib"
+file-types = ["bib"]
+roots = []
+comment-token = "%"
+language-server = { command = "texlab" }
+indent = { tab-width = 4, unit = "\t" }
+auto-format = true
+
+[language.formatter]
+command = 'bibtex-tidy'
+args = [
+  "-",
+  "--curly",
+  "--drop-all-caps",
+  "--remove-empty-fields",
+  "--sort-fields",
+  "--sort=year,author,id",
+  "--strip-enclosing-braces",
+  "--trailing-commas",
+]
+
+[[grammar]]
+name = "bibtex"
+source = { git = "https://github.com/latex-lsp/tree-sitter-bibtex", rev = "ccfd77db0ed799b6c22c214fe9d2937f47bc8b34" }
+
 [[language]]
 name = "lean"
 scope = "source.lean"

runtime/queries/bibtex/highlights.scm

@@ -0,0 +1,47 @@
+[
+  (string_type)
+  (preamble_type)
+  (entry_type)
+] @keyword
+
+[
+  (junk)
+  (comment)
+] @comment
+
+[
+  "="
+  "#"
+] @operator
+
+(command) @function.builtin
+
+(number) @constant.numeric
+
+(field
+  name: (identifier) @variable.builtin)
+
+(token
+  (identifier) @variable.parameter)
+
+[
+  (brace_word)
+  (quote_word)
+] @string
+
+[
+  (key_brace)
+  (key_paren)
+] @attribute
+
+(string
+  name: (identifier) @constant)
+
+[
+  "{"
+  "}"
+  "("
+  ")"
+] @punctuation.bracket
+
+"," @punctuation.delimiter