slen 149 core/ngx_string.c size_t len, slen; slen 175 core/ngx_string.c slen = (size_t) -1; slen 217 core/ngx_string.c slen = va_arg(args, size_t); slen 252 core/ngx_string.c if (slen == (size_t) -1) { slen 258 core/ngx_string.c len = ngx_min(((size_t) (last - buf)), slen);