diff --git a/luprex/cpp/luaconsole.cpp b/luprex/cpp/luaconsole.cpp
index 60518cff..f48655e9 100644
--- a/luprex/cpp/luaconsole.cpp
+++ b/luprex/cpp/luaconsole.cpp
@@ -60,8 +60,8 @@ void LuaConsole::add(std::string line) {
             state_ = STATE_SYNTAX;
         }
     } else {
-        state_ = STATE_COMPLETE;
         syntax_ = "";
+        state_ = STATE_COMPLETE;
     }
     lua_settop(lua_state_, top);
 }
diff --git a/luprex/cpp/luastack.cpp b/luprex/cpp/luastack.cpp
index 1e35fd3b..4d1bb38f 100644
--- a/luprex/cpp/luastack.cpp
+++ b/luprex/cpp/luastack.cpp
@@ -48,6 +48,7 @@ void LuaStack::register_all_userdata(lua_State *L) {
             LS.rawset(LuaRegistry, lud, tab);
         }
     }
+    LS.result();
 }
 
 LuaFunctionReg::LuaFunctionReg(const char *m, const char *n, lua_CFunction f) {
diff --git a/luprex/cpp/textgame.cpp b/luprex/cpp/textgame.cpp
index d6550f7a..d0f82cda 100644
--- a/luprex/cpp/textgame.cpp
+++ b/luprex/cpp/textgame.cpp
@@ -55,51 +55,45 @@ static int report(lua_State *L, int status)
     return status;
 }
 
-static int docall(lua_State *L, int narg, int nret)
+static void doexp(lua_State *L, const std::string &exp)
 {
+    int status = luaL_loadbuffer(L, exp.c_str(), exp.size(), "=stdin");
+    assert(status == LUA_OK);
+    globalL = L;
     signal(SIGINT, laction);
-    int status = traceback_pcall(L, narg, nret);
+    status = traceback_pcall(L, 0, LUA_MULTRET);
     signal(SIGINT, SIG_DFL);
-    /* force a complete garbage collection in case of errors */
-    if (status != LUA_OK)
+    if (status != LUA_OK) {
+        report(L, status);
         lua_gc(L, LUA_GCCOLLECT, 0);
-    return status;
+    }
+    if (status == LUA_OK && lua_gettop(L) > 0) {
+        lua_getglobal(L, "pprint");
+        if (lua_isnil(L, -1)) {
+            lua_pop(L, 1);
+            lua_getglobal(L, "print");
+        }
+        lua_insert(L, 1);
+        if (lua_pcall(L, lua_gettop(L) - 1, 0, 0) != 0) {
+            l_message(
+                lua_pushfstring(L, "error calling 'print' (%s)",
+                                lua_tostring(L, -1)));
+        }
+    }
 }
 
-static void dotty(lua_State *L)
+void TextGame::run()
 {
     LuaConsole console;
-    int status;
-
     while (true) {
+        console.add_stdin();
         switch (console.state()) {
         case LuaConsole::STATE_INCOMPLETE:
-            console.add_stdin();
             break;
-        case LuaConsole::STATE_COMPLETE: {
-            const std::string &exp = console.expression();
-            status = luaL_loadbuffer(L, exp.c_str(), exp.size(), "=stdin");
-            assert(status == LUA_OK);
-            status = docall(L, 0, LUA_MULTRET);
-            report(L, status);
-            if (status == LUA_OK && lua_gettop(L) > 0) {
-                // any result to print?
-                lua_getglobal(L, "pprint");
-                if (lua_isnil(L, -1)) {
-                    lua_pop(L, 1);
-                    lua_getglobal(L, "print");
-                }
-                lua_insert(L, 1);
-                if (lua_pcall(L, lua_gettop(L) - 1, 0, 0) != 0)
-                {
-                    l_message(
-                        lua_pushfstring(L, "error calling 'print' (%s)",
-                                        lua_tostring(L, -1)));
-                }
-            }
+        case LuaConsole::STATE_COMPLETE:
+            doexp(viewer_.get_lua_state(), console.expression());
             console.clear();
             break;
-        }
         case LuaConsole::STATE_SLASHCOMMAND:
             std::cerr << "Slash commands not supported yet." << std::endl;
             console.clear();
@@ -112,8 +106,3 @@ static void dotty(lua_State *L)
     }
 }
 
-void TextGame::run()
-{
-    dotty(viewer_.get_lua_state());
-}
-
diff --git a/luprex/cpp/world.cpp b/luprex/cpp/world.cpp
index e0f04d03..ac060655 100644
--- a/luprex/cpp/world.cpp
+++ b/luprex/cpp/world.cpp
@@ -40,6 +40,9 @@ World::World() {
     // Initialize the SourceDB
     source_db_.initialize(lua_state_);
     source_db_.rebuild();
+
+    LS.result();
+    assert (lua_gettop(lua_state_) == 0);
 }
 
 void Tangible::be_a_player() {