Disables bright colors in nano on macOS

darknano.c

#include <string.h>

int overridden_strncasecmp(const char *s1, const char *s2, size_t n) {
	if (n != 6 || strncmp(s2, "bright", n)) {
		return strncasecmp(s1, s2, n);
	} else {
		return !0;
	}
}

int overridden_strcasecmp(const char *s1, const char *s2) {
	if (!strncasecmp(s1, "bright", 6)) {
		s1 += 6;
	}
	return strcasecmp(s1, s2);
}

__attribute__((used, section("__DATA,__interpose"))) static struct {
	int (*overridden_strncasecmp)();
	int (*strncasecmp)();
} overrides[] = {
    {overridden_strncasecmp, strncasecmp},
    {overridden_strcasecmp, strcasecmp},
};