From 47d5e54c48deaa30f7d9d4cd217254840e2fb5be Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Fri, 30 Nov 2018 13:25:08 +0400
Subject: [PATCH] Fix t.me/username links with upper-case letters.

---
 Telegram/SourceFiles/core/local_url_handlers.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Telegram/SourceFiles/core/local_url_handlers.cpp b/Telegram/SourceFiles/core/local_url_handlers.cpp
index 0740d8d154..b4bfe00a49 100644
--- a/Telegram/SourceFiles/core/local_url_handlers.cpp
+++ b/Telegram/SourceFiles/core/local_url_handlers.cpp
@@ -172,7 +172,7 @@ bool ResolveUsername(const Match &match, const QVariant &context) {
 	const auto domain = params.value(qsl("domain"));
 	const auto valid = [](const QString &domain) {
 		return qthelp::regex_match(
-			qsl("^[a-z0-9\\.\\_]+$"),
+			qsl("^[a-zA-Z0-9\\.\\_]+$"),
 			domain,
 			{}
 		).valid();