(storage_class_specifier) @keyword.storage

"goto" @keyword
"register" @keyword
"break" @keyword
"case" @keyword
"continue" @keyword
"default" @keyword
"do" @keyword
"else" @keyword
"enum" @keyword
"extern" @keyword
"for" @keyword
"if" @keyword
"inline" @keyword
"return" @keyword
"sizeof" @keyword
"struct" @keyword
"switch" @keyword
"typedef" @keyword
"union" @keyword
"volatile" @keyword
"while" @keyword
"const" @keyword

[
 "#define"
 "#elif"
 "#else"
 "#endif"
 "#if"
 "#ifdef"
 "#ifndef"
 "#include"
 (preproc_directive)
] @keyword.directive

"--" @operator
"-" @operator
"-=" @operator
"->" @operator
"=" @operator
"!=" @operator
"*" @operator
"&" @operator
"&&" @operator
"+" @operator
"++" @operator
"+=" @operator
"<" @operator
"==" @operator
">" @operator
"||" @operator
">=" @operator
"<=" @operator

"." @punctuation.delimiter
";" @punctuation.delimiter

[(true) (false)] @constant.builtin.boolean

(enumerator) @type.enum.variant

(string_literal) @string
(system_lib_string) @string

(null) @constant
(number_literal) @constant.numeric.integer
(char_literal) @constant.character

(call_expression
  function: (identifier) @function)
(call_expression
  function: (field_expression
    field: (field_identifier) @function))
(function_declarator
  declarator: (identifier) @function)
(preproc_function_def
  name: (identifier) @function.special)

(field_identifier) @variable.other.member
(statement_identifier) @label
(type_identifier) @type
(primitive_type) @type
(sized_type_specifier) @type

((identifier) @constant
 (#match? @constant "^[A-Z][A-Z\\d_]*$"))

(identifier) @variable

(comment) @comment
