4 filename: "(\\.(proto)$$)"
7 - identifier: "\\b[A-Z_][0-9A-Z_]+\\b"
8 - type: "\\b(int(8|16|32|64))|string|bytes|repeated|bool|required|map|optional|oneof|union\\b"
9 - statement: "\\b(import|service|enum|syntax|package|option|message|rpc|returns|extensions|to)\\b"
10 - constant: "'\\\\(([0-3]?[0-7]{1,2}))'"
11 - constant: "'\\\\x[0-9A-Fa-f]{1,2}'"
12 - symbol.brackets: "[(){}]|\\[|\\]"
13 - constant.number: "(\\b[0-9]+\\b|\\b0x[0-9A-Fa-f]+\\b)"
20 - constant.specialChar: "\\\\."
28 - constant.specialChar: "\\\\."
34 - todo: "(TODO|XXX|FIXME):?"
40 - todo: "(TODO|XXX|FIXME):?"