Use subs() instead of QString::number() for i18n

src/TerminalDisplay.cpp

@@ -3454,7 +3454,7 @@ void TerminalDisplay::doPaste(QString text, bool appendReturn)
                 description = i18n("ESC: Used for special commands to the current process");
                 break;
             default:
-                description = i18n("Other unprintable character (\\x%1)", QString::number(c.unicode(), 16));
+                description = ki18n("Other unprintable character (\\x%1)").subs(c.unicode(), 0, 16).toString();
                 break;
             }
             unsafeCharacters.append(description);