Turn on ligatures for arabic & syriac scripts

Author: K0R0L

DesktopEditor/fontengine/TextShaper.cpp

@@ -693,6 +693,13 @@ namespace NSShaper
 			g_userfeatures_init = true;
 		}
 
+		// Turn on ligatures on arabic script
+		if (nScript == HB_SCRIPT_ARABIC ||
+			nScript == HB_SCRIPT_SYRIAC)
+		{
+			nFeatures |= 1;
+		}
+
 		// font
 		hb_font_t* pFont;
 		if (NULL == font)

DesktopEditor/fontengine/js/cpp/text.cpp

@@ -594,6 +594,13 @@ WASM_EXPORT unsigned char* ASC_HB_ShapeText(FT_Face pFace, hb_font_t* pFont, cha
 		g_userfeatures_init = true;
 	}
 
+	// Turn on ligatures on arabic script
+	if (nScript == HB_SCRIPT_ARABIC ||
+		nScript == HB_SCRIPT_SYRIAC)
+	{
+		nFeatures |= 1;
+	}
+
 	// font
 	if (NULL == pFont)
 	{