Merge pull request #10117 from bfredl/ctrl-o_event

normal: Don't exit CTRL-O mode after processing K_EVENT

src/nvim/normal.c

@@ -7983,8 +7983,14 @@ static void nv_event(cmdarg_T *cap)
   // not safe to perform garbage collection because there could be unreferenced
   // lists or dicts being used.
   may_garbage_collect = false;
+  bool may_restart = (restart_edit != 0);
   multiqueue_process_events(main_loop.events);
   finish_op = false;
+  if (may_restart) {
+    // Tricky: if restart_edit was set before the handler we are in ctrl-o mode
+    // but if not, the event should be allow to trigger :startinsert
+    cap->retval |= CA_COMMAND_BUSY;  // don't call edit() now
+  }
 }
 
 /*