4 filename: "\\.c(c|pp|xx)$|\\.h(h|pp|xx)$|\\.ii?$|\\.(def)$"
7 - identifier: "\\b[A-Z_][0-9A-Z_]+\\b"
8 - type: "\\b(auto|float|double|bool|char|int|short|long|sizeof|enum|void|static|const|constexpr|struct|union|typedef|extern|(un)?signed|inline)\\b"
9 - type: "\\b((s?size)|((u_?)?int(8|16|32|64|ptr)))_t\\b"
10 - statement: "\\b(class|namespace|template|public|protected|private|typename|this|friend|virtual|using|mutable|volatile|register|explicit)\\b"
11 - statement: "\\b(for|if|while|do|else|case|default|switch)\\b"
12 - statement: "\\b(try|throw|catch|operator|new|delete)\\b"
13 - special: "\\b(goto|continue|break|return)\\b"
14 - preproc: "^[[:space:]]*#[[:space:]]*(define|pragma|include|(un|ifn?)def|endif|el(if|se)|if|warning|error)"
15 - constant: "'([^'\\\\]|(\\\\[\"'abfnrtv\\\\]))'|'\\\\(([0-3]?[0-7]{1,2}))'|'\\\\x[0-9A-Fa-f]{1,2}'"
16 - statement: "__attribute__[[:space:]]*\\(\\([^)]*\\)\\)|__(aligned|asm|builtin|hidden|inline|packed|restrict|section|typeof|weak)__"
17 - symbol.operator: "[.:;,+*|=!\\%]|<|>|/|-|&"
18 - symbol.brackets: "[(){}]|\\[|\\]"
19 - constant.number: "\\b[0-9]+\\b|\\b0x[0-9A-Fa-f]+\\b"
20 - constant.bool: "\\b(true|false)\\b|NULL"
21 - constant.string: "\"(\\\\.|[^\"])*\""
28 - indent-char.whitespace: "[[:space:]]+$"