This file is indexed.

/usr/share/highlight/langDefs/diff.lang is in highlight-common 3.41-1.

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
Description="Diff"

Digits=[[ ^[\d,]*[ac]\d* ]]

Keywords={
  { Id=1,
    Regex=[[^[+<].*]],
  },
  { Id=2,
    Regex=[[^[->].*]],
  },
  { Id=3,
    Regex=[[^\.$]],
  },
  { Id=4,
    Regex=[[^@@.*@@$]],
  },
}

Comments={
  { Block=false,
    Delimiter= { [[regex(^\-\-\-$)]] },
  },
}