Add data string argument in all callbacks of script API, display script name in error messages for scripts

src/plugins/scripts/lua/weechat-lua.c

@@ -113,6 +113,12 @@ weechat_lua_exec (struct t_plugin_script *script,
                                 argc = 7;
                                 lua_pushstring (lua_current_interpreter,
                                                 argv[6]);
+                                if (argv[7])
+                                {
+                                    argc = 8;
+                                    lua_pushstring (lua_current_interpreter,
+                                                    argv[7]);
+                                }
                             }
                         }
                     }
@@ -145,7 +151,7 @@ weechat_lua_exec (struct t_plugin_script *script,
     }
     else
     {
-        WEECHAT_SCRIPT_MSG_WRONG_ARGUMENTS(function);
+        WEECHAT_SCRIPT_MSG_WRONG_ARGS(LUA_CURRENT_SCRIPT_NAME, function);
         lua_current_script = old_lua_current_script;
 	return NULL;
     }

src/plugins/scripts/lua/weechat-lua.h

@@ -23,6 +23,8 @@
 #define weechat_plugin weechat_lua_plugin
 #define LUA_PLUGIN_NAME "lua"
 
+#define LUA_CURRENT_SCRIPT_NAME ((lua_current_script) ? lua_current_script->name : "-")
+
 extern struct t_weechat_plugin *weechat_lua_plugin;
 
 extern int lua_quiet;