/usr/share/joe/syntax/conf.jsf is in joe 4.1-2.
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 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | # JOE syntax highlight file for typical UNIX configuration files
=Idle
=Comment green
=String cyan
=Escape bold red
=Backtick blue
:idle Idle
* idle
"#" comment recolor=-1
"\"" string recolor=-1
"'" single recolor=-1
"\`" backtick recolor=-1
"\\" escape recolor=-1
:escape Escape
* idle
:comment Comment
* comment
"\n" idle
:string String
* string
"\"" idle
"\`" backtick_in_str recolor=-1
"\\" string_escape recolor=-1
:string_escape Escape
* string
"\n" string recolor=-2
:backtick_in_str Backtick
* backtick_in_str
"\`" string
"\\" bt_escape_2 recolor=-1
:bt_escape_2 Escape
* backtick_in_str
"\n" backtick_in_str recolor=-2
:single String
* single
"'" idle
"\\" single_escape recolor=-1
:single_escape Escape
* single
"\n" single recolor=-2
:backtick Backtick
* backtick
"\`" idle
"\"" string_in_bt recolor=-1
"'" single_in_bt recolor=-1
"\\" bt_escape recolor=-1
:bt_escape Escape
* backtick
"\n" backtick recolor=-2
:string_in_bt String
* string_in_bt
"\"" backtick
"\\" string_escape_b recolor=-1
:string_escape_b Escape
* string_in_bt
"\n" string_in_bt recolor=-2
:single_in_bt String
* single_in_bt
"'" backtick
"\\" single_escape_b recolor=-1
:single_escape_b Escape
* single_in_bt
"\n" single_in_bt recolor=-2
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