fix readline

Author: coder114514

emulator/src/Logger.cpp

@@ -9,16 +9,16 @@ namespace casioemu {
     namespace logger {
         void Info(const char *format, ...) {
             // * TODO may introduce race condition
-            // if (RL_ISSTATE(RL_STATE_TERMPREPPED))
+            if (RL_ISSTATE(RL_STATE_READCMD))
                 rl_clear_visible_line();
             va_list args;
             va_start(args, format);
             vprintf(format, args);
             va_end(args);
-            // if (RL_ISSTATE(RL_STATE_TERMPREPPED)) {
+            if (RL_ISSTATE(RL_STATE_READCMD)) {
                 rl_on_new_line();
                 rl_redisplay();
-            // }
+            }
         }
     }
 } // namespace casioemu

emulator/src/casioemu.cpp

@@ -89,6 +89,15 @@ int main(int argc, char *argv[]) {
         test_gui();
         std::thread console_input_thread([&] {
             struct terminate_thread {};
+            rl_event_hook = []() {
+                throw terminate_thread{};
+                return 0;
+            };
+            try {
+                (void)readline("");
+            } catch (terminate_thread) {
+                rl_cleanup_after_signal();
+            } // an ugly hack to make readline not print a extranous line when calling rl_clear_visible_line
             rl_event_hook = []() {
                 if (!running)
                     throw terminate_thread{};