Bug with default_modifiers and isset in if

When you set the default modifiers $smarty->default_modifiers = array('escape:"htmlall":"utf-8"'); and then have a template like this {if isset($_smarty_debug_output) and $_smarty_debug_output eq "html"} the output is something like that <?php if (isset(((is_array($_tmp=$this->_tpl_vars['_smarty_debug_output'])) ? $this->_run_mod_handler('escape', true, $_tmp, 'htmlall', "utf-8") : smarty_modifier_escape($_tmp, 'htmlall', "utf-8"))) && ((is_array($_tmp=$this->_tpl_vars['_smarty_debug_output'])) ? $this->_run_mod_handler('escape', true, $_tmp, 'htmlall', "utf-8") : smarty_modifier_escape($_tmp, 'htmlall', "utf-8")) == 'html'): ?> and it's obvious that this is not possible. Parse error: syntax error, unexpected '(', expecting T_STRING or T_VARIABLE or '$' in XYZ on line XYZ Would be nice to have this fixed soon. The default modifiers are quite helpful ^^ Bye, Uli