-GtkButton* toolbar_append_button(GtkToolbar* toolbar, const char* description, const char* icon, const Callback& callback);
-GtkButton* toolbar_append_button(GtkToolbar* toolbar, const char* description, const char* icon, const Command& command);
-GtkToggleButton* toolbar_append_toggle_button(GtkToolbar* toolbar, const char* description, const char* icon, const Callback& callback);
-GtkToggleButton* toolbar_append_toggle_button(GtkToolbar* toolbar, const char* description, const char* icon, const Toggle& toggle);
+GtkButton* toolbar_append_button( GtkToolbar* toolbar, const char* description, const char* icon, const Callback& callback );
+GtkButton* toolbar_append_button( GtkToolbar* toolbar, const char* description, const char* icon, const Command& command );
+GtkToggleButton* toolbar_append_toggle_button( GtkToolbar* toolbar, const char* description, const char* icon, const Callback& callback );
+GtkToggleButton* toolbar_append_toggle_button( GtkToolbar* toolbar, const char* description, const char* icon, const Toggle& toggle );