This file is indexed.

/usr/share/highlight/langDefs/c.lang is in highlight-common 3.9-1build1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
Description="C and C++"

Keywords={
  {  Id=1,
   List={"goto", "break", "return", "continue", "asm", "case", "default", "if", "else", "switch", "while", "for", "do", "sizeof",
         "typeof", "stdcall", "cdecl", "const_cast", "delete", "dynamic_cast", "goto", "namespace", "new", "pascal",
         "reinterpret_cast", "static_cast", "this", "throw", "try", "catch", "using", "true", "false", "bitand", "and", "bitor", "or", "xor",
         "compl", "and_eq", "or_eq", "xor_eq", "not", "not_eq", "assert", "static_assert",
        }
  },
  { Id=2,
    List= { "int", "long", "short", "char", "void", "signed", "unsigned", "float", "double", "size_t", "wchar_t",
    "ptrdiff_t", "sig_atomic_t", "fpos_t", "clock_t", "time_t", "va_list", "jmp_buf", "FILE", "DIR", "div_t", "ldiv_t", "static",
"mbstate_t", "wctrans_t", "wint_t", "wctype_t", "const", "bool", "complex", "struct", "union", "enum",
"int8_t", "int16_t", "int32_t", "int64_t", "uint8_t", "uint16_t", "uint32_t", "uint64_t", "int_least8_t", "int_least16_t",
"int_least32_t", "int_least64_t", "uint_least8_t", "uint_least16_t", "uint_least32_t", "uint_least64_t",
"int_fast8_t", "int_fast16_t", "int_fast32_t", "int_fast64_t", "uint_fast8_t", "uint_fast16_t", "uint_fast32_t",
"uint_fast64_t", "intptr_t", "uintptr_t", "intmax_t", "uintmax_t"
          }
  },
  { Id=3,
    List= { "typedef", "inline", "auto", "class", "explicit", "extern", "friend", "inline", "mutable", "operator",
           "register", "template", "private", "protected", "public", "typeid", "virtual", "volatile", "constexpr", "nullptr", "decltype"
          }
  },
  { Id=4,
    Regex=[[(\w+)\s*\(]]
  }
}

Strings = {
  Delimiter=[["|']],
  RawPrefix="R",
}

Comments = {
   { Block=true,
     Nested=false,
     Delimiter = { [[\/\*]], [[\*\/]] }
   },
   {
     Block=false,
     Delimiter = { [[//]] }
   }
}

IgnoreCase=false

PreProcessor = {
  Prefix=[[#]],
  Continuation="\\",
}

Operators=[[\(|\)|\[|\]|\{|\}|\,|\;|\.|\:|\&|\<|\>|\!|\=|\/|\*|\%|\+|\-|\~|\||\^]]

EnableIndentation=true