*/
string out;
- string const allowed = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_%.";
+ string const allowed = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_%.+";
for (size_t i = 0; i < s.size(); ++i) {
if (allowed.find (s[i]) != string::npos) {
out += s[i];