Append param to query or hash of callback_url.

Telegram/Resources/langs/lang.strings

@@ -1630,6 +1630,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_passport_error_too_large" = "This file is too large.";
 "lng_passport_error_bad_size" = "This image has bad dimensions.";
 "lng_passport_error_cant_read" = "Can't read this file. Please choose an image.";
+"lng_passport_bad_name" = "Use latin characters only.";
 
 // Wnd specific
 

Telegram/SourceFiles/base/qthelp_url.cpp

@@ -44,16 +44,15 @@ bool is_ipv6(const QString &ip) {
 	return ip.indexOf('.') < 0 && ip.indexOf(':') >= 0;
 }
 
-QString url_append_query(const QString &url, const QString &add) {
-	const auto query = ranges::find(url, '?');
-	const auto hash = ranges::find(url, '#');
-	const auto base = url.mid(0, hash - url.begin());
-	const auto added = base
-		+ (hash <= query ? '?' : '&')
+QString url_append_query_or_hash(const QString &url, const QString &add) {
+	const auto query = url.lastIndexOf('?');
+	if (query < 0) {
+		return url + '?' + add;
+	}
+	const auto hash = url.lastIndexOf('#');
+	return url
+		+ (query >= 0 && query > url.lastIndexOf('#') ? '&' : '?')
 		+ add;
-	const auto result = added
-		+ (hash < url.end() ? url.mid(hash - url.begin()) : QString());
-	return result;
 }
 
 } // namespace qthelp

Telegram/SourceFiles/base/qthelp_url.h

@@ -26,7 +26,7 @@ QMap<QString, QString> url_parse_params(
 	const QString &params,
 	UrlParamNameTransform transform = UrlParamNameTransform::NoTransform);
 
-QString url_append_query(const QString &url, const QString &add);
+QString url_append_query_or_hash(const QString &url, const QString &add);
 
 bool is_ipv6(const QString &ip);
 

Telegram/SourceFiles/passport/passport_form_controller.cpp

@@ -2099,7 +2099,7 @@ void FormController::cancelSure() {
 		if (!_request.callbackUrl.isEmpty()
 			&& (_serviceErrorText.isEmpty()
 				|| ForwardServiceErrorRequired(_serviceErrorText))) {
-			const auto url = qthelp::url_append_query(
+			const auto url = qthelp::url_append_query_or_hash(
 				_request.callbackUrl,
 				(_submitSuccess
 					? "tg_passport=success"

Telegram/SourceFiles/passport/passport_panel_controller.cpp

@@ -68,7 +68,7 @@ EditDocumentScheme GetDocumentScheme(
 		} else if (!QRegularExpression(
 			"^[a-zA-Z\\- ]+$"
 		).match(value).hasMatch()) {
-			return "Use latin characters only.";// lang(lng_passport_bad_name);
+			return lang(lng_passport_bad_name);
 		}
 		return base::none;
 	};