handle rate limited channels

components/chatinput.cpp

@@ -44,8 +44,9 @@ bool ChatInput::ProcessKeyPress(GdkEventKey *event) {
         auto text = buf->get_text();
         // sometimes a message thats just newlines can sneak in if you hold down enter
         if (text.size() > 0 && !std::all_of(text.begin(), text.end(), [](gunichar c) -> bool { return c == gunichar('\n'); })) {
-            buf->set_text("");
-            m_signal_submit.emit(text);
+            const bool accepted = m_signal_submit.emit(text);
+            if (accepted)
+                buf->set_text("");
             return true;
         }
     }