/usr/share/mc/syntax/ruby.syntax is in mc-data 3:4.8.3-10.
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 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 | #Ruby syntax file derived from perl syntax by Marco Ciampa <ciampix@libero.it>
#alpha version 0.2 16/05/2003
context default
#Bang path
keyword whole linestart #!\[\s\]/\[abcdefghijklmnopqrstuvwxyz\]/\[abcdefghijklmnopqrstuvwxyz\]/\[abcdefghijklmnopqrstuvwxyz\]/\[abcdefghijklmnopqrstuvwxyz\]/bin/ruby brightcyan black
keyword whole linestart #!\[\s\]/\[abcdefghijklmnopqrstuvwxyz\]/\[abcdefghijklmnopqrstuvwxyz\]/\[abcdefghijklmnopqrstuvwxyz\]/bin/ruby brightcyan black
keyword whole linestart #!\[\s\]/\[abcdefghijklmnopqrstuvwxyz\]/\[abcdefghijklmnopqrstuvwxyz\]/bin/ruby brightcyan black
keyword whole linestart #!\[\s\]/\[abcdefghijklmnopqrstuvwxyz\]/bin/ruby brightcyan black
keyword whole linestart #!\[\s\]/bin/ruby brightcyan black
# Symbols :bla-bla
keyword whole \:\{ABCDEFGHIJKLMNOPQRSTUVWXYZ_\-abcdefghijklmnopqrstuvwxyz\}\[\?\-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz\] white
#Operators
keyword > yellow
keyword < yellow
keyword - yellow
keyword \+ yellow
keyword \* yellow
keyword / yellow
keyword % yellow
keyword = yellow
keyword \+= yellow
keyword -= yellow
keyword == yellow
keyword != yellow
keyword === yellow
keyword <=> yellow
keyword ! yellow
keyword ~ yellow
keyword =~ yellow
keyword & yellow
keyword | yellow
keyword .. yellow
#System variables
# hack for regexps
keyword $/ yellow
keyword $\{!@&\+`'=~/\\,.;<>_\*"$:F?\} red
keyword $\{\0123456789\} red
keyword $-+ red
keyword whole $defout red
keyword whole $DEBUG red
keyword whole $F red
keyword whole $FILENAME red
keyword whole $LOAD_PATH red
keyword whole $SAFE red
keyword whole $VERBOSE red
keyword whole __FILE__ red
keyword whole __LINE__ red
keyword whole BEGIN red
keyword whole END red
keyword whole DATA red
keyword whole RUBY_PLATFORM red
keyword whole RUBY_RELEASE_DATE red
keyword whole RUBY_VERSION red
keyword whole $stdin red
keyword whole STDIN red
keyword whole $stdout red
keyword whole STDOUT red
keyword whole $stderr red
keyword whole STDERR red
keyword whole argv red
keyword whole ARGV red
keyword whole ARGF red
keyword whole env red
keyword whole ENV red
#Braces &
keyword { brightcyan
keyword } brightcyan
keyword ( brightcyan
keyword ) brightcyan
keyword [ brightcyan
keyword ] brightcyan
keyword , brightcyan
keyword : brightcyan
keyword whole false brightred
keyword whole FALSE brightred
keyword whole nil brightred
keyword whole NIL brightred
keyword whole true brightred
keyword whole TRUE brightred
#Variables
keyword wholeright $+ brightgreen
keyword wholeright @+ white
keyword \\" brightred
keyword \\' brightred
#Reserved words (see ruby manual)
keyword whole def magenta
keyword whole alias magenta
keyword whole and magenta
keyword whole begin magenta
keyword whole break magenta
keyword whole case magenta
keyword whole class magenta
keyword whole defined\? magenta
keyword whole do magenta
keyword whole else magenta
keyword whole elsif magenta
keyword whole end magenta
keyword whole ensure magenta
keyword whole for magenta
keyword whole if magenta
keyword whole in magenta
keyword whole module magenta
keyword whole next magenta
keyword whole not magenta
keyword whole or magenta
keyword whole redo magenta
keyword whole rescue magenta
keyword whole retry magenta
keyword whole return magenta
keyword whole self magenta
keyword whole super magenta
keyword whole then magenta
keyword whole undef magenta
keyword whole unless magenta
keyword whole until magenta
keyword whole when magenta
keyword whole while magenta
keyword whole yeld magenta
#First class methods
keyword whole new yellow
keyword whole inherited yellow
keyword whole superclass yellow
#Class module
# exclusion
keyword whole include\? green
keyword whole include magenta
keyword whole require magenta
keyword whole require_relative magenta
# keyword whole where magenta
#Class numeric
keyword whole abs red
keyword whole modulo red
keyword whole remainder red
#Class IO
keyword whole close yellow
keyword whole crypt yellow
keyword whole delete yellow
keyword whole each yellow
keyword whole gets yellow
keyword whole grep yellow
keyword whole inspect yellow
keyword whole join yellow
keyword whole sync yellow
#Class Array
keyword whole index yellow
keyword whole indexes yellow
keyword whole indices yellow
keyword whole size yellow
keyword whole pop yellow
keyword whole push yellow
keyword whole sort yellow
keyword whole shift yellow
keyword whole unshift yellow
#Math module
keyword whole Math::PI red
keyword whole Math::E red
keyword whole atan2 red
keyword whole cos red
keyword whole exp red
keyword whole frexp red
keyword whole ldexp red
keyword whole log red
keyword whole log10 red
keyword whole sin red
keyword whole sqrt red
keyword whole tan red
#Kernel module
keyword whole chomp yellow
keyword whole chomp! yellow
keyword whole chop yellow
keyword whole chop! yellow
keyword whole raise yellow
keyword whole fork yellow
keyword whole rand yellow
keyword whole srand yellow
keyword whole open yellow
keyword whole print yellow
keyword whole printf yellow
keyword whole sprintf yellow
keyword whole exec yellow
keyword whole eval yellow
keyword whole exit yellow
keyword whole sleep yellow
#this works only with label EOF :-(
#context exclusive whole <<\[\s\]EOF EOF green
context # \n brown
spellcheck
context " " green
keyword \\" brightgreen
keyword \\\\ brightgreen
context ' ' brightgreen
keyword \\' green
keyword \\\\ green
context exclusive ` ` white black
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