static void highlight_cpp (void) {
	char * separators = ".,:;<=>+-*/%!&~^?|()[]{}'\" \t\r\n";

	char * keywords [] = {
		"alignas",      "alignof",      "and",          "asm",          "auto",         "bool",         "break",        "case",
		"catch",        "char",         "class",        "compl",        "concept",      "const",        "consteval",    "constexpr",
		"constinit",    "continue",     "decltype",     "default",      "delete",       "do",           "double",       "else",
		"enum",         "explicit",     "export",       "extern",       "false",        "float",        "for",          "friend",
		"goto",         "if",           "inline",       "int",          "long",         "mutable",      "namespace",    "new",
		"noexcept",     "not",          "nullptr",      "operator",     "or",           "private",      "protected",    "public",
		"reflexpr",     "register",     "requires",     "return",       "short",        "signed",       "sizeof",       "static",
		"struct",       "switch",       "synchronized", "template",     "this",         "throw",        "true",         "try",
		"typedef",      "typeid",       "typename",     "union",        "unsigned",     "using",        "virtual",      "void",
		"volatile",     "while",        "xor",          "final",        "override",     "import",       "module"
	};

	int word;

	syntax_define (false, false, "/*", "*/", '\0', (int) 0xff777777, 0);
	syntax_define (false, false, "//", "\n", '\0', (int) 0xff777777, 0);
	syntax_define (false, false, "#",  "\n", '\\', (int) 0xff3377aa, 0);
	syntax_define (false, false, "'",  "'",  '\\', (int) 0xff7733cc, 0);
	syntax_define (false, false, "\"", "\"", '\\', (int) 0xffcc3377, 0);

	for (word = 0; word != (int) (sizeof (keywords) / sizeof (keywords [0])); ++word) {
		syntax_define (false, true, keywords [word], separators, '\0', (int) 0xff33ccee, 0);
	}

	syntax_define (true, false, "()[]{}",             "", '\0', (int) 0xffee5533, 0);
	syntax_define (true, false, ".,:;<=>+*-/%!&~^?|", "", '\0', (int) 0xffeeaa33, 0);

	syntax_define (true, true, "0123456789",                 separators, '\0', (int) 0xffee33aa, 0);
	syntax_define (true, true, "abcdefghijklmnopqrstuvwxyz", separators, '\0', (int) 0xffcccccc, 0);
	syntax_define (true, true, "ABCDEFGHIJKLMNOPQRSTUVWXYZ", separators, '\0', (int) 0xffeeeeee, 0);
	syntax_define (true, true, "_",                          separators, '\0', (int) 0xffaaaaaa, 0);
}