Fix Amharic (Ethiopic) font rendering on Windows

- Bundle Abyssinica SIL font in Telegram/Resources/fonts/
- Load font and add substitutions in application.cpp (Windows only)
- Fixes #30184, #30230
- README: Add Abyssinica SIL attribution (SIL OFL 1.1)
- Location picker: Escape maps token before eval (security)

Made-with: Cursor

Author: gittare

README.md

@@ -59,6 +59,7 @@ Version **1.8.15** was the last that supports older systems
 * Range-v3 ([Boost License](https://github.com/ericniebler/range-v3/blob/master/LICENSE.txt))
 * Open Sans font ([Apache License 2.0](http://www.apache.org/licenses/LICENSE-2.0.html))
 * Vazirmatn font ([SIL Open Font License 1.1](https://github.com/rastikerdar/vazirmatn/blob/master/OFL.txt))
+* Abyssinica SIL font ([SIL Open Font License 1.1](https://software.sil.org/abyssinica/)) — Ethiopic/Amharic support
 * Emoji alpha codes ([MIT License](https://github.com/emojione/emojione/blob/master/extras/alpha-codes/LICENSE.md))
 * xxHash ([BSD License](https://github.com/Cyan4973/xxHash/blob/dev/LICENSE))
 * QR Code generator ([MIT License](https://github.com/nayuki/QR-Code-generator#license))

Telegram/Resources/fonts/AbyssinicaSIL-Regular.ttf

@@ -43,6 +43,7 @@
     <file alias="dice/dice4.svg">../../art/dice/dice4.svg</file>
     <file alias="dice/dice5.svg">../../art/dice/dice5.svg</file>
     <file alias="dice/dice6.svg">../../art/dice/dice6.svg</file>
+    <file alias="fonts/AbyssinicaSIL-Regular.ttf">../../fonts/AbyssinicaSIL-Regular.ttf</file>
   </qresource>
   <qresource prefix="/icons">
     <file alias="calls/hands.lottie">../../icons/calls/hands.lottie</file>

Telegram/Resources/qrc/telegram/telegram.qrc

@@ -93,6 +93,7 @@ For license and copyright information please follow this link:
 
 #include <QtCore/QStandardPaths>
 #include <QtCore/QMimeDatabase>
+#include <QtGui/QFontDatabase>
 #include <QtGui/QGuiApplication>
 #include <QtGui/QScreen>
 #include <QtGui/QWindow>
@@ -262,9 +263,25 @@ void Application::run() {
 
 	startLocalStorage();
 
-	style::SetCustomFont(settings().customFontFamily());
+	auto fontFamily = settings().customFontFamily();
+	style::SetCustomFont(fontFamily);
 	style::internal::StartFonts();
 
+	// Add Ethiopic (Amharic) font fallback on Windows. Open Sans doesn't support
+	// Ethiopic; bundled Abyssinica SIL does. Fixes #30184, #30230.
+#ifdef Q_OS_WIN
+	if (const auto id = QFontDatabase::addApplicationFont(
+			u":/gui/fonts/AbyssinicaSIL-Regular.ttf"_q);
+			id >= 0) {
+		QFont::insertSubstitutions(u"Open Sans"_q, QStringList{
+			u"Vazirmatn UI NL"_q,
+			u"Abyssinica SIL"_q,
+			u"Segoe UI"_q,
+			u"Arial"_q,
+		});
+	}
+#endif
+
 	ValidateScale();
 
 	refreshGlobalProxy(); // Depends on app settings being read.

Telegram/SourceFiles/core/application.cpp

@@ -1095,7 +1095,7 @@ void LocationPicker::mapReady() {
 
 	delete base::take(_mapLoading);
 
-	const auto token = _config.mapsToken.toUtf8();
+	const auto token = EscapeForScriptString(_config.mapsToken.toUtf8());
 	const auto center = DefaultCenter(_initialProvided);
 	const auto bounds = DefaultBounds();
 	const auto params = "token: '" + token + "'"