From f7a07b5a09ce81120584d024eb7af0758f10c7f5 Mon Sep 17 00:00:00 2001
From: David Capello <david@igarastudio.com>
Date: Wed, 21 Nov 2018 17:42:12 -0300
Subject: [PATCH] lua: Call Dialog button onclick callback with protected
 lua_pcall()

---
 src/app/script/dialog_class.cpp | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/app/script/dialog_class.cpp b/src/app/script/dialog_class.cpp
index 2bdb60b0c..2500a8af7 100644
--- a/src/app/script/dialog_class.cpp
+++ b/src/app/script/dialog_class.cpp
@@ -293,8 +293,14 @@ int Dialog_button_base(lua_State* L, T** outputWidget = nullptr)
             lua_rawgeti(L, LUA_REGISTRYINDEX, ref);
             lua_geti(L, -1, n);
 
-            if (lua_isfunction(L, -1))
-              lua_call(L, 0, 0);
+            if (lua_isfunction(L, -1)) {
+              if (lua_pcall(L, 0, 0, 0)) {
+                if (const char* s = lua_tostring(L, -1))
+                  App::instance()
+                    ->scriptEngine()
+                    ->consolePrint(s);
+              }
+            }
             else
               lua_pop(L, 1);
             lua_pop(L, 1);        // Pop table from the registry