Function conc

source/src/command.cpp:429–451

}

char *conc(const char **w, int n, bool space)
{
    if(n < 0)
    {  // auto-determine number of strings
        n = 0;
        while(w[n] && w[n][0]) n++;
    }
    static vector<int> wlen;
    wlen.setsize(0);
    int len = space ? max(n-1, 0) : 0;
    loopj(n) len += wlen.add((int)strlen(w[j]));
    if(len > CSLIMIT_STRINGLEN) { cslimiterr("string length"); return newstring(""); }
    char *r = newstring("", len), *res = r;
    loopi(n)
    {
        strncpy(r, w[i], wlen[i]);  // make string-list out of all arguments
        r += wlen[i];
        if(space) *r++ = ' ';
    }
    if(space && n) --r;
    *r = '\0';
    return res;
}

VARN(numargs, _numargs, MAXWORDS, 0, 0);