Function uppercase_first

crawl-ref/source/stringutil.cc:99–111

}

string uppercase_first(string s)
{
    // Incorrect due to those pesky Dutch having "ij" as a single letter (wtf?).
    // Too bad, there's no standard function to handle that character, and I
    // don't care enough.
    char32_t c;
    if (!s.empty())
    {
        utf8towc(&c, &s[0]);
        wctoutf8(&s[0], towupper(c));
    }
    return s;
}

int codepoints(string str)
{