This file is indexed.

/usr/share/highlight/langDefs/fortran90.lang is in highlight-common 3.18-3.

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
-- Language definition generated by lang2to3

Description="Fortran 90"

Digits=[[ (?:0x|0X)[0-9a-fA-F]+|\d*[\.\_]?\d+(?:[eE][\-\+]\d+)?[lLuUbfdm]* ]]

Keywords={
  { Id=1,
    List={"accept", "endmap", "pause",   "assign", "endstructure", "pointer",   "automatic", "endunion", "print",   "backspace", "entry", "program",
          "blockdata", "equivalence", "read",   "byte", "external", "readonly",   "call", "find", "real",   "character", "format", "record", "close",
          "function", "return",   "common", "goto", "rewind",   "complex", "if", "rewrite",   "continue", "implicit", "save",   "data", "implicitnone",
          "shared",   "decode", "implicitundefined", "static",   "definefile", "include", "stop",   "delete", "inquire", "structure",   "dimension", "integer",
          "subroutine",   "do", "intrinsic", "then",   "doublecomplex", "key", "to",   "doubleprecision", "logical", "type",   "else", "map", "undefined",
          "elseif", "namelist", "union",   "encode", "none", "unlock",   "end", "nospanblocks", "virtual",   "enddo", "open", "volatile", "endfile", "options",
          "while",   "endif", "parameter", "write", "module", "interface", "use", "contains", "stop", "recursive"},
  },
  { Id=2,
    List={"integer", "real", "double", "precision", "complex", "logical", "character"},
  },
  { Id=4,
    Regex=[[(\w+)\s*\(]],
  },
}

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

IgnoreCase=true

Comments={
  { Block=false,
    Delimiter= { [[!]] },
  },
}

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