/usr/include/cutl/compiler/cxx-indenter.ixx is in libcutl-dev 1.8.1+ds1-1.
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 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 57 58 59 60 61 62 63 64 65 66 67 68 69 | // file      : cutl/compiler/cxx-indenter.ixx
// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC
// license   : MIT; see accompanying LICENSE file
namespace cutl
{
  namespace compiler
  {
    template <typename C>
    inline typename cxx_indenter<C>::char_class_type cxx_indenter<C>::
    char_class (C c)
    {
      switch (c)
      {
      case '0':
      case '1':
      case '2':
      case '3':
      case '4':
      case '5':
      case '6':
      case '7':
      case '8':
      case '9':
        return cc_digit;
      case '!':
      case '%':
      case '^':
      case '&':
      case '*':
      case '(':
      case ')':
      case '-':
      case '+':
      case '=':
      case '{':
      case '}':
      case '|':
      case '~':
      case '[':
      case ']':
      case '\\':
      case ';':
      case '\'':
      case ':':
      case '"':
      case '<':
      case '>':
      case '?':
      case ',':
      case '.':
      case '/':
        return cc_op_punc;
      case ' ':
      case '\n':
      case '\t':
      case '\f':
      case '\r':
      case '\v':
        return cc_space;
      default:
        return cc_alpha;
      }
    }
  }
}
 |