/usr/share/source-highlight/style.lang is in libsource-highlight-common 3.1.7-1.
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 | # this is the language definition for the
# style definition syntax
comment start "//"
string delim "\"" "\"" escape "\\"
keyword = "bgcolor|purple|orange|brightorange|brightgreen|darkgreen",
"green|darkred|red|brown|pink|yellow|cyan",
"black|teal|gray|darkblue|blue",
"normal|linenum",
"noref|nf|f|u|i|b"
keyword = 'bg\:'
symbol = ",|;"
variable = '[[:word:]]+'
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